CY8C27466 查看數據表（PDF） - Cypress Semiconductor

零件编号

产品描述 (功能)

生产厂家

CY8C27466

PSoC™ Mixed Signal Array

Cypress Semiconductor 

CY8C27x66 Preliminary Data Sheet

PSoC™ Overview

tors, to simplify programming of real time embedded events.

Program execution is timed and protected using the included

Sleep and Watch Dog Timers (WDT).

Memory encompasses 32K of Flash for program storage, 1 KB

of SRAM for data storage, and up to 2K of EEPROM emulated

using the Flash. Program Flash utilizes four protection levels on

blocks of 64 bytes, allowing customized software IP protection.

The PSoC device incorporates flexible internal clock genera-

tors, including a 24 MHz IMO (internal main oscillator) accurate

to 2.5% 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 ILO (internal low speed oscillator) is provided for

the Sleep timer and WDT. If crystal accuracy is desired, the

ECO (32.768 kHz external crystal oscillator) is available for use

as a Real Time Clock (RTC) and can optionally generate a crys-

tal-accurate 24 MHz system clock using a PLL. The clocks,

together with programmable clock dividers (as a System

Resource), provide the flexibility to integrate almost any timing

requirement into the PSoC device.

PSoC 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 interfac-

ing. Every pin also has the capability to generate a system inter-

rupt on high level, low level, and change from last read.

The Digital System

The Digital System is composed of 8 digital PSoC blocks. Each

block is an 8-bit resource that can be used alone or combined

with other blocks to form 8, 16, 24, and 32-bit peripherals, which

are called user module references. Digital peripheral configura-

tions include those listed below.

■ PWMs (8 to 32 bit)

■ PWMs with Dead band (8 to 32 bit)

■ Counters (8 to 32 bit)

■ Timers (8 to 32 bit)

■ UART 8 bit with selectable parity (up to 2)

■ SPI master and slave (up to 2 each)

■ I2C slave and master (1 available as a System Resource)

■ Cyclical Redundancy Checker/Generator (8 to 32 bit)

■ IrDA (up to 2)

■ Pseudo Random Sequence Generators (8 to 32 bit)

The digital blocks can be connected to any GPIO through a

series of global buses that can route any signal to any pin. The

buses also allow for signal multiplexing and for performing logic

operations. This configurability frees your designs from the con-

straints of a fixed peripheral controller.

Digital blocks are provided in rows of four, where the number of

blocks varies by PSoC device family. This allows you the opti-

mum choice of system resources for your application. Family

resources are shown in the table titled “PSoC Device Charac-

teristics” on page 3.

Port 5 Port 4 Port 3 Port 2 Port 1 Port 0

Digital Clocks To System Bus To Analog

From Core

System

8

8

DIGITAL SYSTEM

Digital PSoC Block Array

Row 0

4

DBB00 DBB01 DCB02 DCB03

4

Row 1

4

DBB10 DBB11 DCB12 DCB13

4

8

8

GIE[7:0]

GIO[7:0]

Global Digital

Interconnect

GOE[7:0]

GOO[7:0]

Digital System Block Diagram

The Analog System

The Analog System is composed of 12 configurable blocks,

each comprised of an opamp circuit allowing the creation of

complex analog signal flows. Analog peripherals are very flexi-

ble and can be customized to support specific application

requirements. Some of the more common PSoC analog func-

tions (most available as user modules) are listed below.

■ Analog to digital converters (up to 4, with 6- to 14-bit resolu-

tion, selectable as Incremental, Delta Sigma, and SAR)

■ Filters (2, 4, 6, or 8 pole band-pass, low-pass, and notch)

■ Amplifiers (up to 4, with selectable gain to 48x)

■ Instrumentation amplifiers (up to 2, with selectable gain to

93x)

■ Comparators (up to 4, with 16 selectable thresholds)

■ DACs (up to 4, with 6- to 9-bit resolution)

■ Multiplying DACs (up to 4, with 6- to 9-bit resolution)

■ High current output drivers (four with 40 mA drive as a Core

Resource)

■ 1.3V reference (as a System Resource)

■ DTMF dialer

■ Modulators

■ Correlators

June 1, 2004

Document No. 38-12019 Rev. *B

2

Share Link: