關鍵詞： CY3269N , Cypress , 照明

Cypress 公司的CY3269N照明開發方案采用CY8CLED04 EZ-Color™ HB LED 控制器,用來開發智能的LED照明,用戶采用手指觸摸能開發出從整個房間到大型建筑物的照明顯示,具有暖色,中色或冷白光的可變色彩溫度,目標應用在LCD背光,通用照明,建筑物照明和大型顯示屏等.本文介紹了CY8CLED04 HB LED 控制器主要特性,邏輯框圖,以及CY3269N照明開發套件,開發板電路圖和材料清單.

Cypress’s EZ-Color family of devices offers the ideal control solution for high brightness LED applications requiring intelligent dimming control. EZ-Color devices combine the power and flexibility of Programmable System-on-Chip (PSoC®); with Cypress’s precise illumination signal modulation (PrISM™) modulation technology providing lighting designers a fully customizable and integrated lighting solution platform.

The EZ-Color family supports a range of independent LED channels from 4 channels at 32 bits of resolution each, up to 16 channels at 8 bits of resolution each. This enables lighting designers the flexibility to choose the LED array size and color quality. PSoC Designer software, with lighting specific drivers, can significantly cut development time and simplify implementation of fixed color points through temperature, optical, and LED binning compensation. EZ-Color’s virtually limitless analog and digital customization enable simple integration of features in addition to intelligent lighting, such as CapSense, battery charging, image stabilization, and motor control during the development process. These features, along with Cypress’s best-in-class quality and design support, make EZ-Color the ideal choice for intelligent HB LED control applications.

CY8CLED04主要特性:

■ HB LED Controller

❐ Configurable dimmers support up to four independent LED channels

❐ 8- to 32-bits of resolution per channel

❐ Dynamic reconfiguration enables led controller plus other features: CapSense®, Battery Charging, and Motor Control

■ Visual embedded design

❐ LED-Based drivers

• Binning compensation

• Temperature feedback

• Optical feedback

• DMX512

■ PrISM™ modulation technology

❐ Reduces radiated EMI

❐ Reduces low frequency blinking

■ Advanced peripherals (PSoC® blocks)

❐ Four digital PSoC blocks provide:

• 8 to 32-bit timers, counters, and PWMs

• Full-duplex UART

• Multiple SPI Masters or Slaves

• Connectable to all GPIO pins

❐ Six Rail-to-Rail analog PSoC blocks provide:

• Up to 14-bit ADCs

• Up to 9-bit DACs

• Programmable gain amplifiers (PGA)

• Programmable filters and comparators

❐ Complex peripherals by combining blocks

❐ Capacitive sensing application capability

■ Complete development tools

❐ Free development software

• PSoC Designer™

❐ Full featured, in-circuit emulator (ICE) and programmer

❐ Full speed emulation

❐ Complex breakpoint structure

❐ 128 KB trace memory

■ Programmable pin configurations

❐ 25 mA sink, 10 mA source on all GPIO

❐ Pull-up, pull-down, high Z, strong, or open drain drive modes on all GPIO

❐ Up to 12 analog inputs on GPIO

❐ Four 30 mA analog outputs on GPIO

❐ Configurable interrupt on all GPIO

■ Flexible on-chip memory

❐ 16K flash program storage 50,000 erase/write cycles

❐ 1K SRAM data storage

❐ In-system serial programming (ISSP)

❐ Partial flash updates

❐ Flexible protection modes

❐ EEPROM emulation in flash

■ Full speed USB (12 Mbps)

❐ Four uni-directional endpoints

❐ One bi-directional control endpoint

❐ USB 2.0 compliant

❐ Dedicated 256 byte buffer

❐ No external crystal required

CY8CLED04目標應用:

■ LCD Backlight

■ Large Signs

■ General Lighting

■ Architectural Lighting

■ Camera/Cell Phone Flash

■ Flashlights

The PSoC Core

The PSoC Core is a powerful engine that supports a rich feature set. The core includes a CPU, memory, clocks, and configurable General Purpose I/O (GPIO).

The M8C CPU core is a powerful processor with speeds up to 68 MHz, providing a four MIPS 8-bit Harvard-architecture microprocessor. The CPU uses an interrupt controller with up to 20 vectors, to simplify programming of real time embedded events. Program execution is timed and protected using the included Sleep and watchdog timers (WDT).

Memory encompasses 16K of flash for program storage, 1K of SRAM for data storage, and up to 2K of EEPROM emulated using the flash. Program flash uses four protection levels on blocks of 64 bytes, allowing customized software IP protection.

The EZ-Color family incorporates flexible internal clock generators, including a 24 MHz internal main oscillator (IMO) accurate to 8 percent over temperature and voltage. The 24 MHz IMO can also be doubled to 48 MHz for use by the digital system.

A low power 32 kHz internal low speed oscillator (ILO) is provided for the sleep timer and WDT. The clocks, together with programmable clock dividers (as a system resource), provide the flexibility to integrate almost any timing requirement into the EZ-Color device. In USB systems, the IMO self-tunes to ± 0.25% accuracy for USB communication.

EZ-Color GPIOs provide connection to the CPU, digital and analog resources of the device. Each pin’s drive mode may be selected from eight options, allowing great flexibility in external interfacing. Every pin can also generate a system interrupt on high level, low level, and change from last read.

2012-3-28 18:29:29 上傳