Cypress CY8CKIT－025分辨率0.1度C温度测量解决方案

Cypress公司的CY8CKIT-025 PSoC® 精密模拟温度传感器扩展板套件(EBK)包括5个温度传感器,能方便快速测量和控制温度,温度测量分辨率达到0.1度C.CY8CKIT-025 EBK设计和CY8CKIT-030 PSoC 3开发板或CY8CKIT-001 PSoC开发板 一起使用,提供完整的单片温度检测和控制解决方案.本文介绍了PSoC®5: CY8C52系列产品主要特性,功能框图,ARM Cortex-M3框图以及CY8CKIT-025 PSoC® 精密模拟温度传感器扩展板套件(EBK)主要特性,电路图,材料清单和PCB元件布局图.

With its unique array of configurable blocks, PSoC® 5 is a true system-level solution providing microcontroller unit (MCU), memory, analog, and digital peripheral functions in a single chip. The CY8C52 family offers a modern method of signal acquisition, signal processing, and control with high accuracy, high bandwidth, and high flexibility. Analog capability spans the range from thermocouples (near DC voltages) to ultrasonic signals. The CY8C52 family can handle dozens of data acquisition channels and analog inputs on every GPIO pin. The CY8C52 family is also a high-performance configurable digital system with some part numbers including interfaces such as USB and multimaster I2C. In addition to communication interfaces, the CY8C52 family has an easy to configure logic array, flexible routing to all I/O pins, and a high-performance 32-bit ARM® Cortex™-M3 microprocessor core. Designers can easily create system level designs using a rich library of prebuilt components and boolean primitives using PSoC Creator™, a hierarchical schematic design entry tool. The CY8C52 family provides unparalleled opportunities for analog and digital bill of materials integration while easily accommodating last minute design changes through simple firmware updates.

CY8C52主要特性:

32-bit ARM Cortex-M3 CPU core

DC to 40 MHz operation

Flash program memory, up to 256 KB, 100,000 write cycles, 20-year retention and multiple security features

Up to 64 KB SRAM memory

128 bytes of cache memory

2-KB electrically erasable programmable read-only memory (EEPROM) memory, 1 million cycles, and 20 years retention

24-channel direct memory access (DMA) with multilayer AMBA high-performance bus (AHB) bus access

• Programmable chained descriptors and priorities

• High bandwidth 32-bit transfer support

Low voltage, ultra low power

Operating voltage range: 2.7 V to 5.5 V

6 mA at 6 MHz

Low power modes including:

• 2-μA sleep mode

• 300-nA hibernate mode with RAM retention

Versatile I/O system

46 to 70 I/Os (60 GPIOs, 8 SIOs, 2 USBIOs))

Any GPIO to any digital or analog peripheral routability

LCD direct drive from any GPIO, up to 46 × 16 segments

CapSense® support from any GPIO

1.2 V to 5.5 V I/O interface voltages, up to four domains

Maskable, independent IRQ on any pin or port

Schmitt trigger transistor-transistor logic (TTL) inputs

All GPIOs configurable as open drain high/low, pull up/down, High-Z, or strong output

25 mA sink on SIO

Digital peripherals

20 to 24 programmable logic device (PLD) based universal digital blocks (UDBs)

Full-Speed (FS) USB 2.0 12 Mbps using a 24 MHz external oscillator

Four 16-bit configurable timer, counter, and PWM blocks

Library of standard peripherals

• 8-, 16-, 24-, and 32-bit timers, counters, and PWMs

• SPI, UART, and I2C

• Many others available in catalog

Library of advanced peripherals

• Cyclic redundancy check (CRC)

• Pseudo random sequence (PRS) generator

• Local interconnect network (LIN) bus 2.0

• Quadrature decoder

Analog peripherals (2.7 V VDDA 5.5 V)

1.024 V ±1% internal voltage reference

Successive approximation register (SAR) analog-to-digital converter (ADC), 12-bit at 700 ksps

One 8-bit, 5.5-Msps current DAC (IDAC) or 1-Msps voltage DAC (VDAC)

Two comparators with 95-ns response time

CapSense support

Programming, debug, and trace

Serial wire debug (SWD) and single-wire viewer (SWV) interfaces

Cortex-M3 flash patch and breakpoint (FPB) block

Cortex-M3 data watchpoint and trace (DWT) generates data trace information

Cortex-M3 Instrumentation Trace Macrocell (ITM) can be used for printf-style debugging

DWT and ITM blocks communicate with off-chip debug and trace systems via the SWV interface

Bootloader programming supportable through I2C, SPI, UART, USB, and other interfaces