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| MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this document by MC14541B/D MC14541B Programmable Timer The MC14541B programmable timer consists of a 16-stage binary counter, an integrated oscillator for use with an external capacitor and two resistors, an automatic power-on reset circuit, and output control logic. Timing is initialized by turning on power, whereupon the power-on reset is enabled and initializes the counter, within the specified VDD range. With the power already on, an external reset pulse can be applied. Upon release of the initial reset command, the oscillator will oscillate with a frequency determined by the external RC network. The 16-stage counter divides the oscillator frequency (fosc) with the nth stage frequency being fosc/2n. * Available Outputs 28, 210, 213 or 216 * Increments on Positive Edge Clock Transitions * Built-in Low Power RC Oscillator ( 2% accuracy over temperature range and 20% supply and 3% over processing at < 10 kHz) * Oscillator May Be Bypassed if External Clock Is Available (Apply external clock to Pin 3) * External Master Reset Totally Independent of Automatic Reset Operation * Operates as 2n Frequency Divider or Single Transition Timer * Q/Q Select Provides Output Logic Level Flexibility * Reset (auto or master) Disables Oscillator During Resetting to Provide No Active Power Dissipation * Clock Conditioning Circuit Permits Operation with Very Slow Clock Rise and Fall Times * Automatic Reset Initializes All Counters On Power Up * Supply Voltage Range = 3.0 Vdc to 18 Vdc with Auto Reset Disabled (Pin 5 = VDD) = 8.5 Vdc to 18 Vdc with Auto Reset Enabled (Pin 5 = VSS) L SUFFIX CERAMIC CASE 620 P SUFFIX PLASTIC CASE 648 D SUFFIX SOIC CASE 751A ORDERING INFORMATION MC14XXXBCP MC14XXXBCL MC14XXXBD Plastic Ceramic SOIC TA = - 55 to 125C for all packages. PIN ASSIGNMENT Rtc Ctc RS NC AR MR VSS 1 2 3 4 5 6 7 14 13 12 11 10 9 8 VDD B A NC MODE Q/Q SEL Q III I I I IIIIIIIIIIIIIIIIIIIII I I I III I I I IIIIIIIIIIIIIIIIIIIII I I I IIIIIIIIIIIIIIIIIIIII I I I IIIIIIIIIIIIIIIIIIIII I I I IIIIIIIIIIIIIIIIIIIII I I I IIIIIIIIIIIIIIIIIIIII I I I IIIIIIIIIIIIIIIIIIIII I I I IIIIIIIIIIIIIIIIIIIII I I I IIIIIIIIIIIIIIIIIIIII I I I IIIIIIIIIIIIIIIIIIIII I I I IIIIIIIIIIIIIIIIIIIII I I I IIIIIIIIIIIIIIIIIIIII IIIIIIIIIIIIIIIIIII I I IIIIIIIIIIIIIIIIIIIII I I I IIIIIIIIIIIIIIIIIIIII IIIIIIIIIIIIIIIIIIIII IIIIIIIIIIIIIIIIIII I I IIIIIIIIIIIIIIIIIIIII MAXIMUM RATINGS* (Voltages Referenced to VSS) Symbol VDD Parameter DC Supply Voltage Value Unit V V - 0.5 to + 18.0 Vin, Vout Iin Input or Output Voltage (DC or Transient) Input Current (DC or Transient), per Pin - 0.5 to VDD + 0.5 10 45 500 mA mA Iout PD Output Current (DC or Transient), per Pin Power Dissipation, per Package Storage Temperature mW Tstg TL - 65 to + 150 260 NC = NO CONNECTION _C _C Lead Temperature (8-Second Soldering) * Maximum Ratings are those values beyond which damage to the device may occur. Temperature Derating: Plastic "P and D/DW" Packages: - 7.0 mW/_C From 65_C To 125_C Ceramic "L" Packages: - 12 mW/_C From 100_C To 125_C REV 5 1/99 (c)MOTOROLA CMOS LOGIC DATA Motorola, Inc. 1999 MC14541B 1 IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII ELECTRICAL CHARACTERISTICS (Voltages Referenced to VSS) Characteristic Ch ii Symbol S bl VOL VDD Vdc 5.0 10 15 5.0 10 15 5.0 10 15 VIH 5.0 10 15 IOH Source 5.0 10 15 IOL 5.0 10 15 15 -- 5.0 10 15 10 15 5.0 10 15 - 7.96 - 4.19 - 16.3 1.93 4.96 19.3 -- -- -- -- -- -- -- -- -- -- -- -- -- 0.1 -- 5.0 10 20 250 500 - 6.42 - 3.38 - 13.2 1.56 4.0 15.6 -- -- -- -- -- -- -- - 12.83 - 6.75 - 26.33 3.12 8.0 31.2 0.00001 5.0 0.005 0.010 0.015 30 82 -- -- -- -- -- -- 0.1 7.5 5.0 10 20 250 500 - 4.49 - 2.37 - 9.24 1.09 2.8 10.9 -- -- -- -- -- -- -- -- -- -- -- -- -- 1.0 -- 150 300 600 1500 2000 mAdc 3.5 7.0 11 -- -- -- 3.5 7.0 11 2.75 5.50 8.25 -- -- -- 3.5 7.0 11 -- -- -- mAdc Min -- -- -- - 55_C 25_C 125_C Max Min -- -- -- Typ # 0 0 0 Max Min -- -- -- Max Unit Ui Vdc Output Voltage Vin = VDD or 0 "0" Level 0.05 0.05 0.05 -- -- -- 1.5 3.0 4.0 0.05 0.05 0.05 -- -- -- 1.5 3.0 4.0 0.05 0.05 0.05 -- -- -- 1.5 3.0 4.0 Vdc "1" Level Vin = 0 or VDD Input Voltage "0" Level (VO = 4.5 or 0.5 Vdc) (VO = 9.0 or 1.0 Vdc) (VO = 13.5 or 1.5 Vdc) "1" Level (VO = 0.5 or 4.5 Vdc) (VO = 1.0 or 9.0 Vdc) (VO = 1.5 or 13.5 Vdc) Output Drive Current (VOH = 2.5 Vdc) (VOH = 9.5 Vdc) (VOH = 13.5 Vdc) (VOL = 0.4 Vdc) (VOL = 0.5 Vdc) (VOL = 1.5 Vdc) Input Current Input Capacitance (Vin = 0) Quiescent Current (Pin 5 is High) Auto Reset Disabled Auto Reset Quiescent Current (Pin 5 is low) Supply Current** (Dynamic plus Quiescent) VIL -- -- -- -- -- -- 2.25 4.50 6.75 -- -- -- VOH 4.95 9.95 14.95 4.95 9.95 14.95 5.0 10 15 4.95 9.95 14.95 Vdc Vdc Sink Iin Cin IDD Adc pF Adc IDDR ID Adc Adc ID = (0.4 A/kHz) f + IDD ID = (0.8 A/kHz) f + IDD ID = (1.2 A/kHz) f + IDD #Data labelled "Typ" is not to be used for design purposes but is intended as an indication of the IC's potential performance. ** The formulas given are for the typical characteristics only at 25_C. When using the on chip oscillator the total supply current (in Adc) becomes: IT = ID + 2 Ctc VDD f x 10-3 where ID is in A, Ctc is in pF, VDD in Volts DC, and f in kHz. (see Fig. 3) Dissipation during power-on with automatic reset enabled is typically 50 A @ VDD = 10 Vdc. This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high-impedance circuit. For proper operation, Vin and Vout should be constrained to the range VSS (Vin or Vout) VDD. Unused inputs must always be tied to an appropriate logic voltage level (e.g., either VSS or VDD). Unused outputs must be left open. MC14541B 2 MOTOROLA CMOS LOGIC DATA IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII SWITCHING CHARACTERISTICS* (CL = 50 pF, TA = 25_C) Characteristic Output Rise and Fall Time tTLH, tTHL = (1.5 ns/pF) CL + 25 ns tTLH, tTHL = (0.75 ns/pF) CL + 12.5 ns tTLH, tTHL = (0.55 ns/pF) CL + 9.5 ns Symbol tTLH, tTHL VDD 5.0 10 15 5.0 10 15 5.0 10 15 5.0 10 15 5.0 10 15 5.0 10 15 5.0 10 15 Min -- -- -- -- -- -- -- -- -- 900 300 225 -- -- -- 900 300 225 420 200 200 Typ # 100 50 40 Max 200 100 80 Unit ns Propagation Delay, Clock to Q (28 Output) tPLH, tPHL = (1.7 ns/pF) CL + 3415 ns tPLH, tPHL = (0.66 ns/pF) CL + 1217 ns tPLH, tPHL = (0.5 ns/pF) CL + 875 ns Propagation Delay, Clock to Q (216 Output) tPHL, tPLH = (1.7 ns/pF) CL + 5915 ns tPHL, tPLH = (0.66 ns/pF) CL + 3467 ns tPHL, tPLH = (0.5 ns/pF) CL + 2475 ns Clock Pulse Width tPLH tPHL s 3.5 1.25 0.9 6.0 3.5 2.5 300 100 85 1.5 4.0 6.0 300 100 85 210 100 100 10.5 3.8 2.9 s 18 10 7.5 -- -- -- 0.75 2.0 3.0 -- -- -- -- -- -- ns tPHL tPLH tWH(cl) Clock Pulse Frequency (50% Duty Cycle) fcl MHz MR Pulse Width tWH(R) ns Master Reset Removal Time trem ns * The formulas given are for the typical characteristics only at 25_C. #Data labelled "Typ" is not to be used for design purposes but is intended as an indication of the IC's potential performance. VDD VDD PULSE GENERATOR RS AR Q/Q SELECT MODE A B MR VSS PULSE GENERATOR RS AR Q/Q SELECT MODE A B MR VSS Q CL Q CL (Rtc AND Ctc OUTPUTS ARE LEFT OPEN) 20 ns 90% 50% 10% 50% DUTY CYCLE Q tTLH 20 ns RS 20 ns 90% 50% 10% tPLH 50% 90% 10% 50% tTHL 20 ns 50% tPHL Figure 1. Power Dissipation Test Circuit and Waveform Figure 2. Switching Time Test Circuit and Waveforms MOTOROLA CMOS LOGIC DATA MC14541B 3 EXPANDED BLOCK DIAGRAM A 12 B 13 1 OF 4 MUX Rtc 1 Ctc 2 RS 3 8-STAGE 8 2 C COUNTER RESET 210 213 216 C 8-STAGE COUNTER RESET 8Q OSC RESET AUTO RESET 5 POWER-ON RESET 6 MASTER RESET VDD = PIN 14 VSS = PIN 7 10 MODE 9 Q/Q SELECT FREQUENCY SELECTION TABLE Number of Counter Stages n 13 10 8 16 Count 2n 8192 1024 256 65536 Mode, 10 TRUTH TABLE State Pin Pi Auto Reset, 5 0 Auto Reset Operating Timer Operational Output Initially Low After Reset Single Cycle Mode 1 Auto Reset Disabled Master Reset On Output Initially High After Reset Recycle Mode A 0 0 1 1 B 0 1 0 1 Master Reset, 6 Q / Q, 9 3 TO CLOCK CIRCUIT INTERNAL RESET 2 Ctc RS RTC 1 Figure 3. Oscillator Circuit Using RC Configuration MC14541B 4 MOTOROLA CMOS LOGIC DATA TYPICAL RC OSCILLATOR CHARACTERISTICS 8.0 4.0 FREQUENCY DEVIATION (%) 0 10 V - 4.0 - 8.0 - 12 - 16 - 55 RTC = 56 k, C = 1000 pF RS = 0, f = 10.15 kHz @ VDD = 10 V, TA = 25C RS = 120 k, f = 7.8 kHz @ VDD = 10 V, TA = 25C 100 VDD = 15 V f, OSCILLATOR FREQUENCY (kHz) 50 20 10 5.0 2.0 1.0 0.5 0.2 0.1 1.0 k 0.0001 10 k 100 k RTC, RESISTANCE (OHMS) 0.001 0.01 C, CAPACITANCE (F) 1.0 m 0.1 f AS A FUNCTION OF C (RTC = 56 k) (RS = 120 k) VDD = 10 V f AS A FUNCTION OF RTC (C = 1000 pF) (RS 2RTC) 5.0 V - 25 0 25 50 75 TA, AMBIENT TEMPERATURE (C) 100 125 Figure 4. RC Oscillator Stability Figure 5. RC Oscillator Frequency as a Function of Rtc and Ctc OPERATING CHARACTERISTICS With Auto Reset pin set to a "0" the counter circuit is initialized by turning on power. Or with power already on, the counter circuit is reset when the Master Reset pin is set to a "1". Both types of reset will result in synchronously resetting all counter stages independent of counter state. Auto Reset pin when set to a "1" provides a low power operation. The RC oscillator as shown in Figure 3 will oscillate with a frequency determined by the external RC network i.e., f= 1 2.3 RtcCtc if (1 kHz 216). The 2n counts as shown in the Frequency Selection Table represents the Q output of the Nth stage of the counter. When A is "1", 216 is selected for both states of B. However, when B is "0", normal counting is interrupted and the 9th counter stage receives its clock directly from the oscillator (i.e., effectively outputting 28). The Q/Q select output control pin provides for a choice of output level. When the counter is in a reset condition and Q/Q select pin is set to a "0" the Q output is a "0", correspondingly when Q/Q select pin is set to a "1" the Q output is a "1". When the mode control pin is set to a "1", the selected count is continually transmitted to the output. But, with mode pin "0" and after a reset condition the RS flip-flop (see Expanded Block Diagram) resets, counting commences, and after 2n-1 counts the RS flip-flop sets which causes the output to change state. Hence, after another 2n-1 counts the output will not change. Thus, a Master Reset pulse must be applied or a change in the mode pin level is required to reset the single cycle operation. v f v 100 kHz) and RS 2 Rtc where RS 10 k A value of RS required to sustain oscillation over a wide range of operating temperatures may need to be determined empirically. This may be done by finding a minimum to maximum resistor value range for oscillation at the two operating temperature extremes. Then, select a value well centered in the overlapping span of the combined ranges. The time select inputs (A and B) provide a two-bit address to output any one of four counter stages (28, 210, 213 and DIGITAL TIMER APPLICATION Rtc 1 Ctc RS AR MR INPUT tMR 2 3 4 5 6 7 14 13 12 11 10 9 8 OUTPUT MODE Q/Q VDD VDD B A N.C. NC When Master Reset (MR) receives a positive pulse, the internal counters and latch are reset. The Q output goes high and remains high for one half the number (2n-1) of clock pulses selected (via A and B), the Q output then goes low and remains low for the remaining half clock pulses or until another input pulse is received. This "one shot" is fully retriggerable and as accurate as the input frequency. An external clock can be used (pin 3 is the clock input, pins 1 and 2 are outputs) if additional accuracy is needed. Notice that a setup time equal to the desired pulse width output is required immediately following initial power up, during which time Q output will be high. t + tMR MOTOROLA CMOS LOGIC DATA MC14541B 5 OUTLINE DIMENSIONS L SUFFIX CERAMIC DIP PACKAGE CASE 620-10 ISSUE V -A- 16 9 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION L TO CENTER OF LEAD WHEN FORMED PARALLEL. 4. DIMENSION F MAY NARROW TO 0.76 (0.030) WHERE THE LEAD ENTERS THE CERAMIC BODY. DIM A B C D E F G H K L M N INCHES MIN MAX 0.750 0.785 0.240 0.295 --- 0.200 0.015 0.020 0.050 BSC 0.055 0.065 0.100 BSC 0.008 0.015 0.125 0.170 0.300 BSC 0_ 15 _ 0.020 0.040 MILLIMETERS MIN MAX 19.05 19.93 6.10 7.49 --- 5.08 0.39 0.50 1.27 BSC 1.40 1.65 2.54 BSC 0.21 0.38 3.18 4.31 7.62 BSC 0_ 15 _ 0.51 1.01 -B- 1 8 C L -T- SEATING PLANE N E F D G 16 PL K M J 16 PL 0.25 (0.010) M M TB S 0.25 (0.010) TA S P SUFFIX PLASTIC DIP PACKAGE CASE 648-08 ISSUE R -A- 16 9 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION L TO CENTER OF LEADS WHEN FORMED PARALLEL. 4. DIMENSION B DOES NOT INCLUDE MOLD FLASH. 5. ROUNDED CORNERS OPTIONAL. DIM A B C D F G H J K L M S INCHES MIN MAX 0.740 0.770 0.250 0.270 0.145 0.175 0.015 0.021 0.040 0.70 0.100 BSC 0.050 BSC 0.008 0.015 0.110 0.130 0.295 0.305 0_ 10 _ 0.020 0.040 MILLIMETERS MIN MAX 18.80 19.55 6.35 6.85 3.69 4.44 0.39 0.53 1.02 1.77 2.54 BSC 1.27 BSC 0.21 0.38 2.80 3.30 7.50 7.74 0_ 10 _ 0.51 1.01 B 1 8 F S C L -T- H G D 16 PL SEATING PLANE K J TA M M 0.25 (0.010) M MC14541B 6 MOTOROLA CMOS LOGIC DATA OUTLINE DIMENSIONS D SUFFIX PLASTIC SOIC PACKAGE CASE 751A-03 ISSUE F NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 (0.005) TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION. -A- 14 8 -B- 1 7 P 7 PL 0.25 (0.010) M B M G C R X 45 _ F -T- SEATING PLANE D 14 PL 0.25 (0.010) M K TB S M A S J DIM A B C D F G J K M P R MILLIMETERS MIN MAX 8.55 8.75 3.80 4.00 1.35 1.75 0.35 0.49 0.40 1.25 1.27 BSC 0.19 0.25 0.10 0.25 0_ 7_ 5.80 6.20 0.25 0.50 INCHES MIN MAX 0.337 0.344 0.150 0.157 0.054 0.068 0.014 0.019 0.016 0.049 0.050 BSC 0.008 0.009 0.004 0.009 0_ 7_ 0.228 0.244 0.010 0.019 MOTOROLA CMOS LOGIC DATA MC14541B 7 Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. "Typical" parameters which may be provided in Motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. Mfax is a trademark of Motorola, Inc. How to reach us: USA / EUROPE / Locations Not Listed: Motorola Literature Distribution; P.O. Box 5405, Denver, Colorado 80217. 1-303-675-2140 or 1-800-441-2447 Customer Focus Center: 1-800-521-6274 MfaxTM: RMFAX0@email.sps.mot.com - TOUCHTONE 1-602-244-6609 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Centre, Motorola Fax Back System - US & Canada ONLY 1-800-774-1848 2, Dai King Street, Tai Po Industrial Estate, Tai Po, N.T., Hong Kong. - http://sps.motorola.com/mfax/ 852-26629298 HOME PAGE: http://motorola.com/sps/ JAPAN: Motorola Japan Ltd.; SPD, Strategic Planning Office, 141, 4-32-1 Nishi-Gotanda, Shinagawa-ku, Tokyo, Japan. 81-3-5487-8488 MC14541B 8 MOTOROLA CMOS LOGIC DATA MC14541B/D |
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