Cypress Semiconductor CY8C21534 Especificaciones descargar pdf (Pagina 17)

3 Cypress Programmable System on a Chip

3.1 PSoC Overview

The Programmable System on a Chip (PSoC) microcontroller is a very flexible addition

to the microcontroller world. Its processor is of Harvard architecture and can run

up to 24 MHz. The MCUs can have up to 16 KB of flash memory and 512 bytes of

SRAM. Possible number of I/O ports can be up to 44 depending on which processor

type is purchased. The microcontrollers include internal Analogue to Digital Converters

(ADC), Digital to Analogue Converters (DAC), filters, timers, counters, digital

communication ports, and other functional capability at the disposal of the user. When

configuring the program for the PSoC, the user is asked to identify which processor

type is being used so that the PSoC design software may tailor the programming

environment specifically for that PSoC. [6, 25-42.]

3.2 PSoC Functionality

The PSoC has what are referred to as digital and analogue blocks. These blocks can be

programmed to represent any digital or analogue electrical component that is given as

an option in the design software. Every PSoC MCU has a different virtual layout within

the PSoC Designer software, and the number of digital and analogue blocks may differ

with different PSoC MCU types.

Of the digital block type there are digital building blocks and digital communication

blocks. Each is tailored slightly different for multiple needs. For example if a Serial

Peripheral Interface (SPI) or Universal Asynchronous Receiver/Transmitter (UART)

connection is needed when the user selects the module to be placed, only the digital

communication blocks will be used. Within the analogue blocks there are continuous

time blocks and switch capacitor blocks. These too are designed differently to

serve different purposes. The continuous time blocks are built of operational amplifier

configurations, while the switch capacitor blocks are composed of capacitors that are

switched to achieve the desired result.

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 68 69

Sin comentarios

Cypress Semiconductor CY8C21534 Especificaciones Pagina 17