ST7294

ST7294 8-BIT MCU WITH 6K ROM, EEPROM AND 16-BIT TIMER WITH INPUT CAPTURE AND DUAL OUTPUT COMPARE n 2.5 to 5.5V Supply Operating Range n 4MHz Maximum Clock Frequency n Fully Static operation n -40° to +85°C Operating Temperature Range n Run, Wait, Stop and RAM Retention modes n User ROM: 6,144 bytes n Data RAM: 224 bytes n EEPROM: 256 bytes n 28 pin Dual-in-Line and SO plastic packages n 22 Bidirectional I/O lines n 6 Interrupt Wake-Up programmable input lines n 16-bit Timer with Input Capture and dual Output Compare n 2V RAM Data Retention mode n Master Reset and Power-On Reset n Maskable Options for: – Input Capture (ICAP) and Output Compare (OCMP) signal pinouts – PORT C Wake-Up function – PORT A Open-Drain outputs – PORTS A and B input Pull-Ups – Watchdog Enabled/Disabled following Reset – Watchdog Enabled during WAIT mode n 8-bit Data Manipulation n 63 Basic Instructions n 17 main Addressing Modes n 8x8 Unsigned Multiply instruction n True Bit Manipulation n Complete Development Support on PC/DOS Real-Time Emulator n Full Software Package (Cross-Assembler, Debugger) n Full Hardware Emulator n EPROM and OTP support PDIP28 PSO28 (See end of Datasheet for Ordering Information) Figure 1. Pin Description (1) INT RESET OSCin OSCout PB7 PB6 PB5 PB4 PB3 PB2 PB1 PB0 PC5 PC4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 VSS 27 VDD 26 PA0 25 PA1 24 PA2 23 PA3 22 PA4 21 PA5 20 PA6 19 PA7 18 PC0 (ICAP) 17 PC1 (OCMP1) 16 PC2 15 PC3 VR0A1734 September 1995 1/69 Table of Contents Page ...