FEATURES
Program Memory - bytes RAM (stack) - bytes Peripherals Operating Supply CPU Frequency Temperature Range Package OTP/EPROM Devices ST72T121J2 ST72T121J4 8K 16K 384 (256) 512 (256) Watchdog, Timers, SPI, SCI and optional Low Voltage Detector Reset 3 to 5.5 V 8MHz max (16MHz oscillator) - 4MHz max over 85°C - 40° C to + 125°C TQFP44 - SDIP42 ST72T121J4/ST72E121J4 Note: Rev. 1.7 September 1999 1/92 1 Table of Contents 1 GENERAL DESCRIPTION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.2 PIN DESCRIPTION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.3 EXTERNAL CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.4 MEMORY MAP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STMicroelectronics
