MCU 8-bit ST7 CISC 8KB Flash 5V 20-Pin PDIP Tube

ST7LITE20F2, ST7LITE25F2 and ST7LITE29F2 are referred to as ST7LITE2. The ST7LITE2 is a member of the ST7 microcontroller family. All ST7 devices are based on a common industry-standard 8-bit core, featuring an enhanced instruction set.The ST7LITE2 features FLASH memory with byte-by-byte In-Circuit Programming (ICP) and In-Application Programming (IAP) capability.Under software control, the ST7LITE2 device can be placed in WAIT, SLOW, or HALT mode, reducing power consumption when the application is in idle or standby state.The enhanced instruction set and addressing modes of the ST7 offer both power and flexibility to software developers, enabling the design of highly efficient and compact application code. In addition to standard 8-bit data management, all ST7 microcontrollers feature true bit manipulation, 8x8 unsigned multiplication and indirect addressing modes.

Memories

8 Kbytes single voltage Flash Program memory with Read-out protection

In-circuit programming and in-application programming (ICP and IAP)

10K write/erase cycles guaranteed

Data retention: 20 years at 55 °C

Temperature ranges:

-40 °C to +85 °C

-40 °C to +105 °C

384 bytes RAM

Clock, reset and supply management

Enhanced reset system

Enhanced low voltage supervisor (LVD) for main supply and an auxiliary voltage detector (AVD) with interrupt capability for implementing safe power-down procedures

Clock sources: internal 1% RC oscillator, crystal/ceramic resonator or external clock

Internal 32-MHz input clock for auto-reload timer

Optional x4 or x8 PLL for 4 or 8 MHz internal clock

Five power saving modes: Halt, Active-halt, Wait and Slow, Auto-wakeup from Halt

I/O ports

Up to 15 multifunctional bidirectional I/O lines

7 high sink outputs

4 timers

Configurable watchdog timer

Two 8-bit Lite timers with prescaler

1 real-time base and 1 input capture

One 12-bit auto-reload timer with 4 PWM outputs, input capture and output compare functions

1 communication interface

SPI synchronous serial interface.

Interrupt management

10 interrupt vectors plus TRAP and RESET

15 external interrupt lines (on 4 vectors)

A/D converter

7 input channels

Fixed gain op-amp

13-bit resolution for 0 to 430 mV (@ 5 V VDD)

10-bit resolution for 430 mV to 5 V (@ 5 V VDD)

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

Full hardware/software development package

DM (debug module)