ST7L3
8-BIT MCU FOR AUTOMOTIVE WITH SINGLE VOLTAGE
FLASH/ROM, DATA EEPROM, ADC, TIMERS, SPI, LINSCI™
■ Memories
– 8 Kbytes program memory: single voltage ex-
tended Flash (XFlash) or ROM with read-out
protection capability. In-Application program-
ming and In-Circuit Programming for XFlash
devices
SO20
– 384 bytes RAM
300mil
– 256 bytes data EEPROM (XFlash and ROM
devices) with read-out protection. 300K write/
erase cycles guaranteed
– XFlash and EEPROM data retention: 20
years at 55°C.
outputs, input capture and output compare
functions
■ 2 Communication Interfaces
– Master/slave LINSCI™ asynchronous serial
■ Clock, Reset and Supply Management
interface
– Enhanced reset system
– SPI synchronous serial interface
■ Interrupt Management
– 10 interrupt vectors plus TRAP and RESET
– 12 external interrupt lines (on 4 vectors)
■ A/D Converter
– Enhanced low voltage supervisor (LVD) for
main supply and an auxiliary voltage detector
(AVD) with interrupt capability for implement-
ing safe power-down procedures
– Clock sources: High precision internal RC os-
cillator, crystal/ceramic resonator or external
clock
– 7 input channels
– Optional x8 PLL for 8 MHz internal clock
– 10-bit resolution
– Five Power Saving Modes: Halt, Active-Halt,
Wait and Slow, Auto Wake Up From Halt
■ Instruction Set
8-bit data manipulation
– 63 basic instructions with illegal opcode
detection
– 17 main addressing modes
– 8 x 8 unsigned multiply instructions
■ Development Tools
■ I/O Ports
– Up to 15 multifunctional bidirectional I/O lines
– 7 high sink outputs
■ 5 Timers
– Configurable Watchdog Timer
– Two 8-bit Lite Timers with prescaler, 1 real-
time base and 1 input capture
– Two 12-bit Auto-reload Timers with 4 PWM
– Full hardware/software development package
– DM (Debug module)
Device Summary
Features
ST7L34
ST7L35
ST7L38
ST7L39
Program memory - bytes
RAM (stack) - bytes
8K
384 (128)
Data EEPROM - bytes
-
-
256
256
Lite Timer, Autoreload
Timer, SPI, 10-bit ADC,
LINSCI
Lite Timer, Autoreload
Timer, SPI, 10-bit ADC,
LINSCI
Lite Timer, Autoreload
Timer, SPI, 10-bit ADC
Lite Timer, Autoreload
Timer, SPI, 10-bit ADC
Peripherals
Operating Supply
CPU Frequency
Operating Temperature
Packages
3.0 to 5.5V
Up to 8 MHz (with external resonator/clock or internal RC oscillator)
Up to -40 to +85°C / -40 to +125°C
SO20 300mil
Rev. 4
1/160
March 2006
1