CP2400 데이터 시트보기 (PDF) - Silicon Laboratories

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CP2400

128/64 SEGMENT LCD DRIVER

Silicon Laboratories 

CP2400/1/2/3

1. System Overview

CP2400/1/2/3 devices are fixed function LCD drivers that can also be used for expanding GPIO, timekeeping, and

increasing available system RAM by up to 256 bytes. The device is controlled using direct and indirect internal

registers accessible through the 4-wire SPI or 2-wire SMBus interface. All digital pins on the device are 5 V

tolerant.

RST

VDD

GND

Power On

Reset

Reset

Power Net

Analog

Power

VREG

Digital

Power

Power

Management

SCK

MISO

MOSI

NSS

INT

CLK

XTAL1

XTAL2

SPI

(4-wire)

SFR

Bus

Host Interface

Low Power

20 MHz

Oscillator

External

CMOS Clock

SYSCLK

SmaRTClock

Oscillator

System Clock

Configuration

Port I/O Configuration

GPIO Expander

2 x Timer (16-bit)

256 Byte SRAM

LCD Control

Charge

Pump

MUX Decode Logic

Segment RAM

Port 0

Drivers

Port 1

Drivers

Port 2

Drivers

Port 3

Drivers

Port 4

Drivers

Figure 1.1. CP2400 Block Diagram

P0.0/LCD0

P0.1/LCD1

P0.2/LCD2

P0.3/LCD3

P0.4/LCD4

P0.5/LCD5

P0.6/LCD6

P0.7/LCD7

P1.0/LCD8

P1.1/LCD9

P1.2/LCD10

P1.3/LCD11

P1.4/LCD12

P1.5/LCD13

P1.6/LCD14

P1.7/LCD15

P2.0/LCD16

P2.1/LCD17

P2.2/LCD18

P2.3/LCD19

P2.4/LCD20

P2.5/LCD21

P2.6/LCD22

P2.7/LCD23

P3.0/LCD24

P3.1/LCD25

P3.2/LCD26

P3.3/LCD27

P3.4/LCD28

P3.5/LCD29

P3.6/LCD30

P3.7/LCD31

P4.0/COM0

P4.1/COM1

P4.2/COM2

P4.3/COM3

CAP

Rev. 1.0

5

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