seiko epson corporation 1 pf722-04 E0C6256 4-bit single chip microcomputer low voltage operation products n description the E0C6256 is a cmos 4-bit single-chip microcomputer, built-in core cpu e0c6200a, rom, ram, a/d converter (r-f conversion type), svd circuit, lcd driver, serial interface, watchdog timer, programmable timer, time base counter, and others. it can realize system to measure temperature and/or humidity by the built-in a/d converter and externally at- tached parts. because of its low-voltage operation and low power consumption, this series is ideal for a wide range of applica- tions, and is especially suitable for battery-driven systems. n features l cmos lsi 4-bit parallel processing l twin clock ............................................. crystal oscillation circuit (with built-in drain capacitance) : 32.768khz (typ.) cr or ceramic oscillation circuit (mask option) : 1mhz (typ.) l instruction set ........................................ 108 instructions l instruction cycle time ............................ 32.768khz clock : 153 m sec, 214 m sec, 366 m sec 1mhz clock : 5 m sec, 7 m sec, 12 m sec l rom ...................................................... 6,144 12 bits l ram ...................................................... 640 4 bits l input port ............................................... 8 bits (pull-down resistors are available by mask option) l output port ............................................ 8 bits (bz, fout and ptovf outputs can be selected by software) l i/o port .................................................. 8 bits (4 bits can be switched to serial i/o by software) l serial interface ...................................... 1 port (8-bit clock synchronous type) l a-d converter ........................................ r-f (resistance/frequency) conversion type, 2 channels l lcd driver ............................................. 60 segments 5, 4, 3 or 2 commons (selected by software) lcd drive voltage: 1.05v to 1.40v, programmable (step by 0.05v) l time base counter ................................ clock timer 1 channel 1/1000sec stopwatch timer 1 channel l programmable timer ............................. 8-bit : 1 channel, with event counter function l watchdog timer l supply voltage detection (svd) circuit .. 1.05/1.20/1.35v, programmable (when 1.5v system is selected by mask option) 2.30/2.45/2.60v, programmable (when 3.0v system is selected by mask option) l interrupt ................................................. external : input port 2 interrupts internal : clock timer 3 interrupts serial interface 1 interrupt a/d converter 1 interrupt l supply voltage ...................................... 0.9v to 3.6v (2.2C3.6v when osc3 is used, 1.35C3.6v when a/d converter is used) l current consumption ............................ halt mode (32.768khz/1.5v, normal) : 1.2 m a (typ.) halt mode (32.768khz/3.0v, halver) : 650na (typ.) operating mode (32.768khz/1.5v, normal) : 3.5 m a (typ.) operating mode (32.768khz/3.0v, halver) : 2.0 m a (typ.) operating mode (1mhz/3.0v, ceramic) : 170 m a (typ.) operating mode (1mhz/3.0v, cr) : 220 m a (typ.) l package ................................................ qfp5-128pin (plastic), qfp5-100pin (plastic) die form l core cpu architecture l r-f converter l serial interface
2 E0C6256 n block diagram com0? seg0?9 dd l1? s1 s2 ss osc1 osc2 reset ram 640 words x 4 bits rom 6,144 words x 12 bits osc system reset control interrupt generator osc3 osc4 r00?3 r10?3 p00?3 p10?3 output port i/o port timer stopwatch programmable timer/counter serial interface lcd driver power controller svd a/d converter (2 channels) v v ca?d v v v cp st0 cm0 sn0 wet st1 cm1 sn1 adout sound generator k00?3 k10?3 test input port test port core cpu e0c6200a
3 E0C6256 n pin configuration qfp5-128pin qfp5-100pin 65 102 39 64 index 38 1 128 103 E0C6256 51 80 31 50 index 30 1 100 81 E0C6256 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 n.c. seg27 seg28 seg29 com0 com1 com2 com3 com4 cb ca v l3 v l2 v l1 cc cd v s2 v ss adout sn1 wet st1 cm1 sn0 cm0 st0 cp v dd n.c. osc1 osc2 osc3 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 osc4 v s1 seg30 seg31 seg32 n.c. n.c. seg33 seg34 seg35 seg36 seg37 seg38 seg39 seg40 seg41 seg42 seg43 seg44 seg45 seg46 seg47 seg48 seg49 seg50 seg51 seg52 seg53 seg54 seg55 seg56 seg57 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 seg58 seg59 n.c. n.c. n.c. v dd reset test k00 k01 k02 k03 k10 k11 k12 k13 r00 r01 r02 r03 r10 r11 r12 r13 p00 p01 p02 p03 p10 p11 p12 p13 n.c. : no connection 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 v ss n.c. n.c. n.c. seg0 seg1 seg2 seg3 seg4 seg5 seg6 seg7 seg8 seg9 seg10 seg11 seg12 seg13 seg14 seg15 seg16 seg17 seg18 seg19 seg20 seg21 seg22 seg23 seg24 seg25 seg26 n.c. pin no. pin name pin no. pin name pin no. pin name pin no. pin name 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 seg29 com0 com1 com2 com3 com4 cb ca v l3 v l2 v l1 cc cd v s2 adout sn1 wet st1 cm1 sn0 cm0 st0 cp v dd osc1 pin no. pin name 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 osc2 osc3 osc4 v s1 seg30 seg31 seg32 seg34 seg36 seg38 seg40 seg41 seg42 seg43 seg44 seg45 seg46 seg47 seg48 seg49 seg51 seg53 seg55 seg57 seg58 pin no. pin name 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 seg59 v dd reset test k00 k01 k02 k03 k10 k11 k12 k13 r00 r01 r02 r03 r10 r11 r12 r13 p00 p01 p02 p03 p10 pin no. pin name 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 p11 p12 p13 v ss seg0 seg1 seg2 seg4 seg6 seg8 seg10 seg12 seg13 seg14 seg15 seg16 seg17 seg18 seg19 seg21 seg23 seg25 seg26 seg27 seg28 pin no. pin name
4 E0C6256 n pin description n electrical characteristics l absolute maximum ratings condition symbol unit remark supply voltage oscillation frequency (1) oscillation frequency (2) v ss f osc1 f osc3 v v v v khz khz v dd =0v duty 50?% max. -1.3 -2.2 -2.55 -0.9 1,200 typ. -3.0/-1.5 -3.0 -3.0 -1.1 32.768 1,000 min. -3.6 -3.6 -3.6 -1.4 300 normal mode normal mode halver mode doubler mode (osc3: off) (osc3: on) pin name in/out function qfp5-128pin pin no. qfp5-100pin v dd v ss v s1 v s2 v l1 v l2 v l3 ca, cb cc, cd osc1 osc2 osc3 osc4 k00?03 k10?13 p00?03 p10?13 r00?03 r10?13 com0?om4 seg0?eg59 * cp st0 cm0 sn0 wet st1 cm1 sn1 adout reset test o o o o o i o i o i i i/o i/o o o o o o o o i o o o i o i i power supply pin (+) power supply pin (? regulated voltage output pin for oscillation and internal logic boosting/reducing power supply output pin output pin for regulated power supply for lcd output pin for lcd booster (v l1 2) output pin for lcd booster (v l1 3) capacitor connection pin for lcd booster capacitor connecting pin for boosting/reducing power supply crystal oscillation input pin crystal oscillation output pin ceramic or cr oscillation input pin (selected by mask option) ceramic or cr oscillation output pin (selected by mask option) input port pin input port pin i/o port pin i/o port pin (switching to sin, sout, sclk, srdy pin is possible by software) output port pin output port pin (switching to bz, ptovf, fout output is possible by software) lcd common output pin (1/5, 1/4, 1/3, 1/2 duty, programmable) lcd segment output pin (dc output may be selected by mask option) a/d converter test output pin a/d converter ch0 cr oscillation output pin a/d converter ch0 cr oscillation output pin a/d converter ch0 cr oscillation input pin a/d converter ch1 cr oscillation output pin a/d converter ch1 cr oscillation output pin a/d converter ch1 cr oscillation output pin a/d converter ch1 cr oscillation input pin a/d converter oscillation frequency output pin initial reset input pin testing input pin 28, 70 18, 97 34 17 14 13 12 11, 10 15, 16 30 31 32 33 73?6 77?0 89?2 93?6 81?4 85?8 5? 101?27, 2? 35?7, 40?6 27 26 25 24 21 22 23 20 19 71 72 24, 52 79 29 14 11 10 9 8, 7 12, 13 25 26 27 28 55?8 59?2 71?4 75?8 63?6 67?0 2? 80?00 1, 30?1 23 22 21 20 17 18 19 16 15 53 54 * the following seg pins are not included in the qfp5-100pin package, so they cannot be used. seg3, seg5, seg7, seg9, seg11, seg20, seg22, seg24, seg33, seg35, seg37, seg39, seg50, seg52, seg54, seg56 rating symbol unit value supply voltage input voltage (1) input voltage (2) permissible total output current * 1 operating temperature storage temperature soldering temperature / time allowable dissipation * 2 * 1 * 2 v ss v i v iosc s i vss topr tstg tsol p d v v v ma ? ? mw -7.0 to 0.5 v ss - 0.3 to 0.5 v s1 - 0.3 to 0.5 10 -20 to 70 -65 to 150 260?, 10sec (lead section) 250 (v dd =0v) the permissible total output current is the sum total of the current (average current) that simultaneously flows from the outpu t pins (or is drawn in). in case of plastic package (qfp5-100pin, qfp5-128pin). l recommended operating conditions
5 E0C6256 l dc characteristics lcd drive voltage * 6 svd voltage (1) svd voltage (2) svd circuit response time power current consumption * 1 * 1 * 2 * 3 * 4 * 5 * 6 v l1 v l2 v l3 v svd1 v svd2 t svd i op v v v v v v v v v v v v v v v v v v sec a na a a a a a a a a a connect 1m w load resistor between v dd and v l1 (no panel load) connect 1m w load resistor between v dd and v l2 (no panel load) connect 1m w load resistor between v dd and v l3 (no panel load) 1.5v system 3.0v system during halt (32khz) during halt (32khz) during halt (32khz) during execution (32khz) * 2 during execution (32khz) * 2 during execution (32khz) * 2 during a/d operation (32khz, v ss =-1.5v) * 3 during a/d operation (32khz, v ss =-3.0v) * 3 during svd operation (32khz) * 4 during execution (1 mhz, ceramic oscillation) * 2 during execution (1 mhz, cr oscillation) * 2 , * 5 max. -0.95 -1.00 -1.05 -1.10 -1.15 -1.20 -1.25 -1.30 2? l1 0.9 3? l1 0.9 -1.00 -1.15 -1.30 -1.30 -2.25 -2.40 -2.55 -2.55 100 2.5 1,200 5.0 6.0 4.0 15.0 150 300 20 300 350 min. -1.15 -1.20 -1.25 -1.30 -1.35 -1.40 -1.45 -1.50 2? l1 -0.1 3? l1 -0.1 -1.10 -1.25 -1.40 -1.40 -2.35 -2.50 -2.65 -2.65 vlchg2?lchg0 = "0" vlchg2?lchg0 = "1" vlchg2?lchg0 = "2" vlchg2?lchg0 = "3" vlchg2?lchg0 = "4" vlchg2?lchg0 = "5" vlchg2?lchg0 = "6" vlchg2?lchg0 = "7" svds1 = "0", svds0 = "0" svds1 = "0", svds0 = "1" svds1 = "1", svds0 = "0" svds1 = "1", svds0 = "1" svds1 = "0", svds0 = "0" svds1 = "0", svds0 = "1" svds1 = "1", svds0 = "0" svds1 = "1", svds0 = "1" (unless otherwise specified, the values listed below are standard values under the following conditions: v dd =0v, v ss =-1.5v/-3.0v, f osc1 =32.768khz, c g =25pf, ta=25 c, v s1 /v l1 /v l2 /v l3 are internal voltage , c1?7=0.1 f) (during a/d operation: c=2,200pf, reference resistance=10k w , sensor=10k w ) typ. -1.05 -1.10 -1.15 -1.20 -1.25 -1.30 -1.35 -1.40 -1.05 -1.20 -1.35 -1.35 -2.30 -2.45 -2.60 -2.60 1.2 650 2.5 3.5 2.0 7.5 100 200 10 170 220 no panel load oscc ="0" vschg ="0" no panel load lpwr = "1", vlchg2?lchg0 = "0", within the operating voltage in each operating mode. the a/d converter and svd circuit are off status. the svd circuit is off status. current consumed during halt (32khz, normal mode) + a/d operating current the a/d converter is off status. current consumed during halt (32khz, normal mode) + svd operating current the value in c mhz can be found by the following expression: i op (f osc3 = c mhz) = i op (f osc3 = 1mhz) c v ss /v s2 v l1 - 0.2v normal mode halver mode doubler mode normal mode halver mode doubler mode normal mode normal mode normal mode characteristic symbol unit condition l analog circuit characteristics and current consumption (unless otherwise specified, the values listed below are standard values under the following conditions: v dd =0v, v ss =-1.5v/-3.0v, f osc1 =32.768khz, ta=25 c, v s1 /v l1 /v l2 /v l3 are internal voltage , c1?7=0.1 f) high level input voltage (1) high level input voltage (2) low level input voltage (1) low level input voltage (2) high level input current (1) high level input current (2) low level input current high level output current low level output current common output current segment output current (during lcd output) segment output current (during dc output) v ih1 v ih2 v il1 v il2 i ih1 i ih2 i il i oh1 i ol1 i oh2 i ol2 i oh3 i ol3 i oh4 i ol4 v v v v a a a a a ma a ma a a a a a a a a v ih1 =0v, without pull down resistor v ih2 =0v, with pull down resistor v il =v ss v oh1 =0.1? ss v ol1 =0.9? ss v oh2 =-0.05v v ol2 =v l3 +0.05v v oh3 =-0.05v v ol3 =v l3 +0.05v v oh4 =0.1? ss v ol4 =0.9? ss max. 0 0 0.8? ss 0.9? ss 0.5 10 16 0 -150 -0.9 -3 -3 -100 -200 min. 0.2? ss 0.1? ss v ss v ss 0 2 4 -0.5 400 1.8 3 3 100 200 k00?3, k10?3, p00?3, p10?3 reset, test k00?3, k10?3, p00?3, p10?3 reset, test k00?3, k10?3, p00?3, p10?3 reset, test k00?3, k10?3, p00?3 p10?3, reset, test k00?3, k10?3, p00?3, p10?3 reset, test p00?3, p10?3 r00?3, r10?3 p00?3, p10?3 r00?3, r10?3 com0?om4 seg0?eg59 seg0?eg59 typ. v ss =-1.5v v ss =-3.0v v ss =-1.5v v ss =-3.0v v ss =-1.5v v ss =-3.0v v ss =-1.5v v ss =-3.0v v ss =-1.5v v ss =-3.0v characteristic symbol unit condition
6 E0C6256 l oscillation characteristics the oscillation characteristics change depending on the conditions (components used, board pattern, etc.). use the follow- ing characteristics as reference values. crystal oscillation circuit (osc1) cr oscillation circuit (osc3) ceramic oscillation circuit (osc3) l characteristic curves ? cr oscillation frequency characteristic the oscillation characteristics change depending on the conditions (components used, board pattern, etc.). use the following characteristics as reference values and evaluate the characteristics on the actual product. 10k 20k 50k 100k 200k 200k 100k 500k 1m 2m external resistance r cr [ w ] cr oscillation frequency f osc3 [hz] 30k 40k 300k 1.2m recommended oscillation range v dd = 0v v ss = -2.2 to -3.6v ta = 25? typ. value oscillation frequency dispersion oscillation start voltage oscillation start time oscillation stop voltage f osc3 vsta t sta vstp % v msec v (v ss ) v ss =-2.2 to -3.6v (v ss ) max. 30 3 min. -30 -2.2 -2.2 (unless otherwise specified, the values listed below are standard values under the following conditions: v dd =0v, v ss =-3.0v, r cr =40k w , ta=25?) typ. 900khz characteristic symbol unit condition oscillation start voltage oscillation start time oscillation stop voltage vsta t sta vstp v msec v max. 3 min. -2.2 -2.2 (unless otherwise specified, the values listed below are standard values under the following conditions: v dd =0v, v ss =-3.0v, ceramic oscillator: 1mhz, c gc =c dc =100pf, ta=25?) typ. characteristic symbol unit condition (v ss ) v ss =-2.2 to -3.6v (v ss ) characteristic symbol unit condition oscillation start voltage oscillation stop voltage built-in capacitance (drain) frequency/voltage deviation frequency/ic deviation frequency adjustment range harmonic oscillation start voltage permitted leak resistance vsta vstp c d f/v f/ic f/c g v hho r leak v v v pf ppm ppm ppm v m w t sta 5sec t stp 10sec (v ss ) including the parasitic capacitance inside the ic (in chip) v ss =-0.9 to -3.6v c g =5 to 25pf c g =5pf between osc1 and v dd , v ss max. 5 10 -3.5 min. -1.35 -1.35 -0.9 -10 35 200 (v ss ) normal mode doubler mode (v ss ) (unless otherwise specified, the values listed below are standard values under the following conditions: v dd =0v, v ss =-1.5/-3.0v, crystal: c-002r (c i =35k w ), c g =25pf, c d =built-in, ta=25 c) typ. 20 45
7 E0C6256 ? a/d converter sensor resistance - oscillation frequency ratio characteristic the following figure shows the oscillation frequency ratio (ratio of oscillation frequency by the reference resistance to oscillation frequency by the sensor resistance) when the following elements are connected. (typ.) reference resistance .............. 10 k w sensor resistance ................... 10 k w to 20 m w oscillating capacitor ................ 2,200 pf note: if the r-f conversion uses a resistive sensor for channel 0 and channel 1, and the r-f con- version uses a resistive humidity sensor for channel 1, both characteristics will be the same. ? a/d converter resistance - oscillation frequency characteristic cr oscillation frequency of the a/d converter disperses in each sampling. therefore, the count number of the up- counter should be decided after considering the fluctuation margin of the cr oscillation frequency by the reference resistance and sensor resistance to be used for the measurement. note: ? the following curves are characteristic when the oscillating capacitor is 2,200 pf. ? typical oscillation frequency is characteris- tic when v ss = -3.0 v. ? the resistance value applies to both refer- ence resistance and sensor resistance. ? if the r-f conversion uses a resistive sensor for channel 0 and channel 1, and the r-f conversion uses a resistive humidity sensor for channel 1, both characteristics will be the same. 1k 0.1 resistance [ w ] oscillation frequency [khz] 1.0 10 100 10k 100k 1m 10m 0.01 v dd = 0v v ss = -1.3v to -3.6v ta = -20 to 70 c oscillating capacitor: 2,200pf max. typ. min. 1k 0.001 sensor resistance [ w ] oscillation frequency ratio 0.01 0.1 1.0 10k 100k 1m 10m 0.0001 v dd = 0v v ss = -1.3v to -3.6v ta = -20 to 70 c
8 E0C6256 n basic external connection diagram ? for temperature measurement using thermistor (ch0) and humidity measurement using resistive humidity sensor (ch1) cd cc cb ca v dd v l1 v l2 v l3 v s1 v s2 osc1 osc2 osc3 osc4 reset test v ss c1 c2 c3 c4 c5 c6 c7 c gx c dc cp 1.5v or 3.0v + x'tal cr * 1 * 2 r cr k00 | k03 k10 | k13 p00 | p03 p10 (sin) p11 (sout) p12 (sclk) p13 (srdy) r00 | r03 r10 (fout) r11 (ptovf) r13 r12 (bz) seg0 | seg59 com0 | com4 cp adout st0 cm0 sn0 wet st1 cm1 sn1 c ad0 r ref0 th E0C6256 lcd panel * 1: ceramic oscillation * 2: cr oscillation c gc c ad1 r ref1 r wet n.c. x'tal c gx cr c gc c dc r cr th r ref0 c ad0 r wet r ref1 c ad1 c1?7 * cp crystal oscillator trimmer capacitor ceramic oscillator gate capacitor drain capacitor resistor for cr oscillation thermistor reference resist- ance for a/d conversion (ch0) capacitor for a/d conversion (ch0) resistive humidity sensor reference resist- ance for a/d conversion (ch1) capacitor for a/d conversion (ch1) capacitors capacitor 32.768khz, ci(max.) = 35k w 5?5pf 1mhz 100pf 100pf 40k w (f osc3 ? 900khz) 2,200pf 2,200pf 0.1 f 3.3 f * when the operating mode is only used at normal mode, the capacitors c1 and c7 are not necessar y . note: the above table is simply an example, and is not guaranteed to work. n package dimensions plastic qfp5-100pin plastic qfp5-128pin unit: mm 20 0.1 25.6 0.4 51 80 14 0.1 19.6 0.4 31 50 index 0.3 0.1 30 1 100 81 2.7 0.1 0.26 3.4 max 2.8 1.5 0 12 0.15 0.05 0.65 20 0.1 23.6 0.4 65 102 14 0.1 17.6 0.4 39 64 index 0.2 0.05 38 1 128 103 2.7 0.1 0.1 3 max 1.8 0.8 0.2 0 10 0.15 0.05 0.5
E0C6256 notice: no part of this material may be reproduced or duplicated in any form or by any means without the written permission of seiko ep son. seiko epson reserves the right to make changes to this material without notice. seiko epson does not assume any liability of any kind arising out of any inaccuracies contained in this material or due to its application or use in any product or circuit and, further, there is n o representation that this material is applicable to products requiring high level reliability, such as, medical products. moreover, no license to an y intellectual property rights is granted by implication or otherwise, and there is no representation or warranty that anything made in accord ance with this material will be free from any patent or copyright infringement of a third party. this material or portions thereof may contain technology or the subject relating to strategic products under the control of the foreign exchange and foreign trade control law of japan and may require an export license from the ministry of international trade and industry or other approval from another government agency. ? seiko epson corporation 1999 all right reserved. seiko epson corporation electronic devices marketing division ic marketing & engineering group ed international marketing department i (europe & u.s.a.) 421-8, hino, hino-shi, tokyo 191-8501, japan phone : 042-587-5812 fax : 042-587-5564 ed international marketing department ii (asia) 421-8, hino, hino-shi, tokyo 191-8501, japan phone : 042-587-5814 fax : 042-587-5110
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