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- Path: sparky!uunet!mcsun!ub4b!alcbel!btmp24!prob
- From: prob@btmp24.be (Pascal Roobrouck SH53)
- Newsgroups: sci.electronics
- Subject: info on ST62XX MCU
- Keywords: MCU
- Message-ID: <1992Sep10.115843@btmp24.be>
- Date: 10 Sep 92 09:58:42 GMT
- Sender: root@alcbel.be
- Reply-To: prob@btmp24.be (Pascal Roobrouck SH53)
- Organization: Alcatel Bell Telephone, Antwerpen, Belgium
- Lines: 67
- Nntp-Posting-Host: btmp24
-
-
- In article <1992Sep9.155129.12557@ncar.ucar.edu> Herb Poppe aksk :
-
-
- >> I don't use the 68HC05 but I do work with the ST62T15.
-
- >Who makes this device?
- >Is its instruction set patterned on some other well-known device?
- >How many pins does it have.
- >Peripherals? (Timers, A/D, D/A etc.)
- >Other family members; devices with EEPROM?...
-
- and here are the answers :
-
- The ST6 family is a product of SGS-THOMSON (ST), it consists of a number
- of device families ST61 ST62 ST63, etc. I only use the ST62 family. The
- instruction set is (as far as I know) NOT compatible with MCUs from
- another vendor... Within the ST62 family there are four main members :
-
- ST6210 : 2K ROM / 12 I/O
- ST6215 : 2K ROM / 20 I/O
- ST6220 : 4K ROM / 12 I/O
- ST6225 : 4K ROM / 20 I/O
-
- The 12 I/O versions come in a 20 DIP package, the 20 I/O versions in an
- 28 DIP. I use also a 20 SO-package. For all versions there are EPROM
- versions (ST62EXX) and One time Programmable versions (ST62TXX). It has
- the following peripherals on-chip : 8 bit timer with 7 bit prescaler,
- All I/O pins programmable in one of 5 modes (pullup/ no pullup,
- interrupt, edge/level triggered, CMOS out, Open drain out, Analog in), 8
- bit A/D convertor (70 us), Watchdog Timer, 64 bytes RAM.
-
- The MCU is however, not fast.... 8 MHz Xtal max, divided internally by
- 13, and four of these cycles per instruction (for most instructions..
- some are faster), results in 6.5 usec instruction cycle... However in
- terms of memory usage, the code is quite efficient : the most frequently
- used instructions are only 1 byte.
-
- You can start developing with this little machine by buying the ST6
- Starter Kit. It includes four samples of ST62E10 and ST62E15, a
- programmer that fits into your PC's printerport, a MacroAssembler, and a
- Software Simulator (MS DOS) + all databooks related to this material.
- The kit is quite cheap (7500 Bfr = $250) and the OTP processers cost
- about $8. However I think that in the USA this can be less because most
- hardware costs in Europe two times the price they charge in the USA.
- (can someone explain this ??) An emulator exists for it (and it would be
- usefull since the simulator doesn's simulate the timer and the A/D
- convertor), I don't know what it costs.
-
-
- SGS-THOMSON has other (more performant) families like the ST9 that are
- direct competitors with Motorola's HC11 and others...
-
- So far my answers.. Now my question : Some weeks ago I asked if anyone
- has source for this device, (or utilities like a compiler or so) but I
- got no answers yet. I hope at least someone in the world has done some
- projects with it !
-
- Regards & Succes,
-
- Pascal Roobrouck,
-
- ~~..~~
- `'
-
-
-
-