PSoC Functional Overview

The PSoC family consists of many On-Chip Controller devices. These devices are designed to replace multiple traditional MCU-based system components with one low cost single-chip programmable device. PSoC devices include configurable blocks of analog and digital logic, and programmable interconnects. 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.

特性 Features

■ Powerful Harvard-architecture processor:

? M8C processor speeds up to 24 MHz

? 8 × 8 multiply, 32-bit accumulate

? Low power at high speed

? 3.0 V to 5.25 V operating voltage

? Industrial temperature range: –40 °C to +85 °C

■ Advanced peripherals (PSoC? Blocks)

? Six analog type “E” PSoC blocks provide:

? Single or dual 8-Bit ADC

? Comparators (up to four)

? Up to eight digital PSoC blocks provide:

? 8- to 32-bit timers and counters, 8- and 16-bit pulse-width modulators (PWMs)

? One shot, multi-shot mode support in timers and PWMs

? PWM with deadband support in one digital block

? Shift register, CRC, and PRS modules

? Full duplex UART

? Multiple SPI masters or slaves, variable data length Support: 8- to 16-Bit

? Can be connected to all GPIO pins

? Complex peripherals by combining blocks

? Shift function support for FSK detection

? Powerful synchronize feature support. Analog module operations can be synchronized by digital blocks or external signals.

■ High speed 10-bit SAR ADC with sample and hold optimized for embedded control

■ Precision, programmable clocking:

? Internal ± 5 24/48 MHz oscillator across the industrial temperature range

? High accuracy 24 MHz with optional 32 kHz crystal and PLL

? Optional external oscillator, up to 24 MHz

? Internal/external oscillator for watchdog and sleep

■ Flexible on-chip memory:

? Up to 16 KB flash program storage 50,000 erase/write cycles

? Up to 1-KB SRAM data storage

? In-system serial programming (ISSP)

? Partial flash updates

? Flexible protection modes

? EEPROM emulation in flash

■ Optimized CapSense? resource:

? Two IDAC support up to 640 μA source current to replace external resistor

? Two dedicated clock resources for CapSense:

? CSD_CLK: 1/2/4/8/16/32/128/256 derive from SYSCLK

? CNT_CLK: 1/2/4/8 Derive from CSD_CLK

? Dedicated 16-bit timers/counters for CapSense scanning

? Support dual CSD channels simultaneous scanning

■ Programmable pin configurations:

? 25 mA sink, 10 mA source on all GPIOs

? Pull-up, pull-down, high Z, Strong, or open-drain drive modes on all GPIOs

? Up to 38 analog inputs on GPIOs

? Configurable interrupt on all GPIOs

■ Additional system resources:

? I2C? slave, master, and multimaster to 400 kHz

? Supports hardware addressing feature

? Watchdog and sleep timers

? User configurable low voltage detection

? Integrated supervisory circuit

? On-Chip precision voltage reference

? Supports RTC block into digital peripheral logic