Cypress CY3280-24x94 通用CapSense 控制方案

Cypress公司的CY8C24x94系列是PSoC可编程系统芯片,包含有许多可编程的系统芯片和片上控制器.所有的PSoC系列能替代传统的MCU,系统IC及其周围的数量众多的分立元件. CY8C24x94采用功能强大的哈佛架构处理器,M8C处理器的速度高达24MHz,工作电压3V到5.25V,高速时低功耗,包括有全特性全速(12Mbps)的USB端口和可配置的模拟,数字和互连电路,可广泛应用在工业,消毒类和通信设备. 本文介绍CY8C24x94系列主要特性, 逻辑方框图, 数字和模拟系统方框图,以及CY3280-24x94 通用CapSense 控制器板主要特性和电路图.

CY8C24x94: PSoC® Programmable System-on-Chip

The PSoC family consists of many programmable system-on-chips with On-Chip Controller devices. All PSoC family devices are designed to replace traditional MCUs, system ICs, and the numerous discrete components that surround them.

The PSoC CY8C24x94 devices are unique members of the PSoC family because it includes a full featured, full speed (12 Mbps) USB port. Configurable analog, digital, and interconnect circuitry enable a high level of integration in a host of industrial, consumer, and communication applications.

This architecture enables the user to create customized peripheral configurations that match the requirements of each individual application. Additionally, a fast CPU, Flash program memory, SRAM data memory, and configurable I/O are included in a range of convenient pinouts and packages.

The PSoC architecture, as illustrated on the left, is comprised of four main areas: PSoC Core, Digital System, Analog System, and System Resources including a full speed USB port. Configurable global busing enables all the device resources to be combined into a complete custom system. The PSoC CY8C24x94 devices can have up to seven I/O ports that connect to the global digital and analog interconnects, providing access to 4 digital blocks and 6 analog blocks.

CY8C24x94主要特性:

■ XRES Pin to Support In-System Serial Programming (ISSP) and External Reset Control in CY8C24894

■ Powerful Harvard Architecture Processor

❐ M8C Processor Speeds to 24 MHz

❐ Two 8x8 Multiply, 32-Bit Accumulate

❐ Low Power at High Speed

❐ 3V to 5.25V Operating Voltage

❐ Industrial Temperature Range: -40℃ to +85℃

❐ USB Temperature Range: -10℃ to +85℃

■ Advanced Peripherals (PSoC® Blocks)

❐ 6 Rail-to-Rail Analog PSoC Blocks Provide:

• Up to 14-Bit ADCs

• Up to 9-Bit DACs

• Programmable Gain Amplifiers

• Programmable Filters and Comparators

❐ Four Digital PSoC Blocks Provide:

• 8 to 32-Bit Timers, Counters, and PWMs

• CRC and PRS Modules

• Full-Duplex UART

• Multiple SPI™ Masters or Slaves

• Connectable to all GPI/O Pins

❐ Complex Peripherals by Combining Blocks

❐ Capacitive Sensing Application Capability

■ 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

■ Flexible On-Chip Memory

❐ 16K Flash Program Storage 50,000 Erase and Write Cycles

❐ 1K SRAM Data Storage

❐ In-System Serial Programming (ISSP)

❐ Partial Flash Updates

❐ Flexible Protection Modes

❐ EEPROM Emulation in Flash

■ 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 GPI/O

❐ Up to 48 Analog Inputs on GPI/O

❐ Two 33 mA Analog Outputs on GPI/O

❐ Configurable Interrupt on all GPI/O

■ Precision, Programmable Clocking

❐ Internal ±4% 24 and 48 MHz Oscillator

❐ Internal Oscillator for Watchdog and Sleep

❐ 0.25% Accuracy for USB with no External Components

■ Additional System Resources

❐ I2C Slave, Master, and Multi-Master to 400 kHz

❐ Watchdog and Sleep Timers

❐ User Configurable Low Voltage Detection


图1.8C24x94逻辑方框图

图2.8C24x94数字系统方框图

图3.8C24x94模拟系统方框图

CY3280-24x94 通用CapSense 控制器板

图4.CY3280-24x94 通用CapSense 控制器板外形图

Kit Contents:

CY3280-24x94 Universal CapSense Controller Board

CY3240-I2USB Bridge Board

CY3210 PSoC MiniProg1 Programmer

CY3280-24x94 Quick Start

USB Retractable Cable (A to mini-B)

PSoC Express Installation CD

PSoC Designer and PSoC Programmer CD

CY3280-24x94 Universal CapSense Controller Kit CD


图5.CY3280-24x94 通用CapSense 控制器板电路图