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| ST ST7 RGB色彩控制解决方案 |
| 作者： 时间：2008-07-17 来源:eaw |
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ST公司的 RGB色彩控制解决方案STEVAL-ILL011V1是基于ST7和STP08C596MTR，主要用于LCD背景光。ST公司的ST72260Gx, ST72262Gx和 ST72264Gx 是8位BIT ST7 MCU系列 ，带有闪存或ROM存储器，ADC, 两个16位计时器，以及I2C, SPI和 SCI等接口。本文介绍ST7 MCU系列的主要特性以及评估板STEVAL-ILL011V1的主要性能和外形图与电路图。
ST72260Gx, ST72262Gx, ST72264Gx 8-BIT MCU WITH FLASH OR ROM MEMORY,
ADC, TWO 16-BIT TIMERS, I2C, SPI, SCI INTERFACES
The ST72260Gx, ST72262Gx and ST72264Gx devices are members of the ST7 microcontroller family. They can be grouped as follows :
ST72264Gx devices are designed for mid-range applications with ADC, I2C and SCI interface capabilities.
ST72262Gx devices target the same range of applications but without I2C interface or SCI.
ST72260Gx devices are for applications that do not need ADC, I2C peripherals or SCI.
All devices are based on a common industrystandard 8-bit core, featuring an enhanced instruction set.
The ST72F260G, ST72F262G, and ST72F264G versions feature single-voltage FLASH memory with byte-by-byte In-Circuit Programming (ICP) capabilities.
Under software control, all devices can be placed in WAIT, SLOW, Active-HALT or HALT mode, reducing power consumption when the application is in idle or stand-by 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.
主要特性：
■Memories
4 K or 8 Kbytes Program memory: ROM or Single voltage extended Flash (XFlash) with read-out protection write protection and In-Circuit Programming and In-Application Programming (ICP and IAP). 10K write/erase cycles guaranteed, data retention: 20 years at 55°C.
256 bytes RAM
Clock, Reset and Supply Management
Enhanced reset system
Enhanced low voltage supply supervisor (LVD) with 3 programmable levels and auxiliary voltage detector (AVD) with interrupt capability for implementing safe power-down procedures
Clock sources: crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
PLL for 2x frequency multiplication
Clock-out capability
4 Power Saving Modes: Halt, Active Halt,Wait and Slow
Interrupt Management
Nested interrupt controller
10 interrupt vectors plus TRAP and RESET
22 external interrupt lines (on 2 vectors)
22 I/O Ports
22 multifunctional bidirectional I/O lines
20 alternate function lines
8 high sink outputs
4 Timers
Main Clock Controller with Real time base and Clock-out capabilities
Configurable watchdog timer
Two 16-bit timers with: 2 input captures, 2 output compares, external clock input on one timer,
PWM and Pulse generator modes
3 Communication Interfaces
SPI synchronous serial interface
I2C multimaster interface (SMBus V1.1 Compliant)
SCI asynchronous serial interface
1 Analog peripheral
10-bit ADC with 6 input channels
Instruction Set
8-bit data manipulation
63 basic instructions with illegal opcode detection
17 main addressing modes
8 x 8 unsigned multiply instruction
Development Tools
Full hardware/software development package
图1。ST7方框图
STEVAL-ILL011V1
RGB Color Control board based on ST7 and STP08C596MTR for LCD backlighting
评估板主要特性：
RS232 interface
Manual color setting
7.5 to 30 V power supply
LED mode indicator
The STEVAL-ILL011V1 evaluation board is based on the ST72F264G2 microcontroller which processes the ambient light color information detected by the VM6101 ambient light sensor, and reproduces the color using the ST6P8CL596 RGB LED driver.
The evaluation kit software enables operation in six different light-sensing modes, including a power-saving mode where the backlight intensity adapts to the ambient light level.
图2。评估板STEVAL-ILL011V1的外形图
图3。评估板STEVAL-ILL011V1电路图
下表为评估板材料清单：
Bill of materials
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