描述 Description

The ST7ULTRALITE 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 ST7ULTRALITE features Flash memory with byte-by-byte in-circuit programming (ICP) and in-application programming (IAP) capability.
Under software control, the ST7ULTRALITE 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 the ST7 microcontrollers feature a true bit manipulation, 8x8 unsigned multiplication and indirect addressing modes.
The devices feature an on-chip debug module (DM) to support in-circuit debugging (ICD). For a description of the DM registers, refer to the ST7 ICC protocol reference manual.

特性 Features

Memories2K Bytes single voltage Flash program memory with readout protection, in-circuit and in-application programming (ICP and IAP). 10K write/erase cycles guaranteed, data retention: 20 years at 55 °C
128 bytes RAM
128 bytes data EEPROM. 300K write/erase cycles guaranteed, data retention: 20 years at 55 °C

Clock, reset and supply management3-level low voltage supervisor (LVD) and auxiliary voltage detector (AVD) for safe power- on/off procedures
Clock sources: internal trimmable 8-MHz RC oscillator, internal low power, low frequency RC oscillator or external clock
Five Power Saving Modes: Halt, Auto-Wakeup from Halt, Active-halt, Wait and Slow

Interrupt management11 interrupt vectors plus TRAP and RESET
5 external interrupt lines (on 5 vectors)

I/O Ports5 multifunctional bidirectional I/O lines
1 additional output line
6 alternate function lines
5 high sink outputs

2 timersOne 8-bit lite timer (LT) with prescaler including: watchdog, 1 realtime base and 1 input capture
One 12-bit auto-reload timer (AT) with output compare function and PWM

A/D converter10-bit resolution for 0 to VDD
5 input channels

Instruction set8-bit data manipulation
63 basic instructions with illegal opcode detection
17 main addressing modes
8 x 8 unsigned multiply instruction

Development toolsFull hardware/software development package
Debug module