november 1998 1/4 rev. 1.1 st7263 low speed usb 8-bit mcu family with up to 16k memory, up to 512 bytes ram, 8-bit adc, wdg, timer, sci &i 2 c product preview n user program memory: up to 16kbytes n data ram: up to 512 bytes with 64 bytes stack n 8 mhz internal clock frequency n run, wait and halt cpu modes n ram retention mode n usb (universal serial bus) interface with dma for low speed applications compliant with usb 1.5 mbs specification (version 1.1) and usb hid specifications (version 1.0): integrated 3.3v voltage regulator and trans- ceivers suspend and resume operations 3 end points with programmable in/out config- uration n 19 programmable i/o lines with: 8 high current i/os (10ma at 1.3v) 2 very high current pure open drain i/os (25ma at 1.5v) 8 lines individually programmable as interrupt inputs n 16-bit timer with 2 input captures, 2 output compares, with pwm generation capabilities, external clock input n 8-bit analog to digital converter with 8 channels n asynchronous serial communications interface (8k and 16k memory versions only) n i 2 c multi master interface up to 400 khz (16k rom version only) n low voltage reset n programmable watchdog for system reliability n 32-pin shrink dual in line plastic/ceramic package or shrink 34-pin so plastic package n fully static operation n 0to+70 o c operating temperature range n 4v to 6v supply operating range n 24 mhz oscillator using quartz crystal or ceramic resonator n 63 basic instructions, 17 main addressing modes n 8x8 unsigned multiply instruction n true bit manipulation n versatile development tools (under windows) including assembler, linker, c-compiler, archiver, source level debugger, software library, hardware emulator, programming boards and gang programmers so34 (shrink) csdip32w psdip32 1
2/4 st7263 2 1 general description 1.1 introduction the st7263 microcontrollers form a sub family of the st7 dedicated to usb applications. the de- vices are based on an industry-standard 8-bit core and feature an enhanced instruction set. they op- erate at an 24mhz oscillator frequency. under software control, the st7263 mcus may be placed in either wait or halt modes, thus reducing power consumption. the enhanced instruction set and addressing modes afford real programming potential. in addition to standard 8-bit data man- agement, the st7263 mcus feature true bit ma- nipulation, 8x8 unsigned multiplication and indirect addressing modes. the devices include an st7 core, up to 16k program memory, up to 512 bytes ram, 19 i/o lines and the following on-chip pe- ripherals: usb low speed interface with 3 end points with programmable in/out configuration using the dma architecture with embedded 3.3v voltage regulator and transceivers (no external compo- nents are needed). 8-bit analog-to-digital converter (adc) with 8 multiplexed analog inputs industry standard asynchronous sci serial inter- face (not on all products - see device summary below) digital watchdog 16-bit timer featuring an external clock input, 2 input captures, 2 output compares with pulse generator capabilities fast i2c multi master interface (not on all prod- ucts - see device summary below) low voltage reset ensuring proper power-on or power-off of the device the st72e63 is the eprom version of the st7263 in csdip32 windowed packages. the st72t63x are the one time programmable (otp) versions in so34/psdip32 packages. the st7263x are the rom versions in so34/ psdip32 packages. a specific mode is available to allow programming of the eprom user memory array. this is set by a specific voltage source applied to the v pp /test pin. table 1. device summary features st72631 st72t631 ST72632 st72t632 st72633 st72t633 st72e631 1) note 1. eprom version for development only. program memory (bytes) rom - otp 16k rom 16k otp 8k rom 8k otp 4k rom 4k otp 16k eprom ram (stack) - bytes 512 (64) 256 (64) 256 (64) 512 (64) usb end points 3 3 3 3 i 2 c multimaster 1 - - 1 sci 1 1 - 1 16-bit timer 1 1 1 1 watchdog yes yes yes yes 8-bit adc 8 channels 8 channels 8 channels 8 channels low voltage reset yes yes yes yes i/o lines 19 19 19 19 external interrupts 8 8 8 8 salestypes so34 rom otp st72631l4m1/xxx st72t631l4m1 st72631k4b1/xxx st72t631k4b1 - ST72632l2m1/xxx st72t632l2m1 ST72632k2b1/xxx st72t632k2b1 - st72633l1m1/xxx st72t633l1m1 st72633k1b1/xxx st72t633k1b1 - - - psdip32 rom otp - - csdip32w eprom st72e631k4d1
3/4 st7263 figure 1. st7263 block diagram power supply v dd port a port c p c l timer port b adc ram control 8-bit core alu p c h s p x y a c c internal clo ck v ss oscout oscin port c i 2 c *) usb dma sci *) (uart) low voltage reset tdo rom/otp/ 256/512 bytes v dda v ssa pa1/sda pa2/scl pa3/extclk pa4/icap1/it1 pa5/icap2/it2 pa6/ocmp1/it3 pa7/ocmp2/it4 pa0/cpuclk pb0/ain0 pb2/ain2 pb3/ain3 pb4/ain4/it5 pb5/ain5/it6 pb6/ain6/it7 pb7/ain7/it8 pc0/rdi pc1/td0 pc2/usboe sie usb usbdp usbdm watch dog reset ain0-ain7 sda scl icap1 icap2 ocmp1 ocmp2 4k/8k/16kbytes pb1/ain1 osc rdi usbvcc usboe extclk v pp /test eprom note *) : not on all products - see table 1 device summary address / data buses osc/3 (int, clock, cpu & periph.) osc/4 (for usb) 3
4/4 st7263 notes: information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specifications mentioned in this publicatio n are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics products are not authorized for use as critical components in life support devices or systems without the express written approval of stmicroelectronics. the st logo is a registered trademark of stmicroelectronics ? 1998 stmicroelectronics - all rights reserved. purchase of i 2 c components by stmicroelectronics conveys a license under the philips i 2 c patent. rights to use these components in an i 2 c system is granted provided that the system conforms to the i 2 c standard specification as defined by philips. stmicroelectronics group of companies australia - brazil - canada - china - france - germany - italy - japan - korea - malaysia - malta - mexico - morocco - the netherlands - singapore - spain - sweden - switzerland - taiwan - thailand - united kingdom - u.s.a. http://www.st.com
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