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| ST ST7Lite39 冰箱控制解决方案 | |||||
作者：ST 文章来源：ST 点击数： 更新时间：2008-2-15  |
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ST7LITE3xF2 8-bit MCU with single voltage Flash, data EEPROM, ADC, timers, SPI, LINSCI The ST7LITE3 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 ST7LITE3 features FLASH memory with byte-by-byte In-Circuit Programming (ICP) and In-Application Programming (IAP) capability. Under software control, the ST7LITE3 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. 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. 主要性能： ■ Memories 8 Kbytes program memory: single voltage extended Flash (XFlash) Program memory with read-out protection, In-Circuit Programming and In-Application programming (ICP and IAP), data retention: 20 years at 55°C. 384 bytes RAM 256 bytes data EEPROM with read-out protection. 300K write/erase cycles guaranteed, data retention: 20 years at 55°C. ■ 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 RC 1% oscillator, crystal/ceramic resonator or external clock Optional x4 or x8 PLL for 4 or 8 MHz internal clock Five Power Saving Modes: Halt, Active-Halt, Wait and Slow, Auto Wake Up From Halt ■ 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 realtime base and 1 input capture Two 12-bit Auto-reload Timers with 4 PWM outputs, input capture and output compare functions ■ 2 Communication Interfaces Master/slave LINSCI™ asynchronous serial interface SPI synchronous serial interface ■ Interrupt Management 10 interrupt vectors plus TRAP and RESET 12 external interrupt lines (on 4 vectors) ■ A/D Converter 7 input channels 10-bit resolution ■ 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) Device summary   图1。ST7Lite39方框图 基于ST7Lite39的冰箱恒温控制板STEVAL-IHT001V1 STEVAL-IHT001V1 Thermostat Control Board for Refrigerator based on ST7Lite39 Features and Description Compressor/defrost control Temperature control Light bulb control User-friendly GUI Energy-saving Safety and EMC standards compliance The STEVAL-IHT001V1 Thermostat Kit is designed for refrigerator or freezer thermostat control. This evaluation kit enables the control of a single-phase induction motor, a light bulb and a defrost resistor (or fan) working on a 230 VRMS 50/60 Hz mains voltage. The board can operate within an ambient temperature range of 0 to 40 °C. The precise maximum temperature depends on the power of the loads. The kit also includes a GUI (graphical user interface) for sending commands to the ST7LITE39F2 microcontroller or to access MCU information via the serial communication interface (SCI). This enables users to easily change the MCU software parameters and acquire measurements during appliance testing.  图2。冰箱恒温控制板外形图  图3。冰箱恒温控制板电路图 下表为冰箱恒温控制板材料清单：   
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