CP2400 SILABS [Silicon Laboratories], CP2400 Datasheet

CP2400

Manufacturer Part Number

CP2400

Description

128/64 SEGMENT LCD DRIVER

Manufacturer

SILABS [Silicon Laboratories]

Datasheet

1.CP2400.pdf (110 pages)

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128/64 S

LCD Driver

GPIO Expander

Real Time Clock, SmaRTClock

256 Bytes RAM

16-bit Timers

Clock Sources

Rev. 1.0 8/10



Expands GPIO count by up to 36 pins (48-pin packages)

General purpose RAM expands the memory available to

64 segments (32-pin package)

or 20 pins (32-pin package)

GPIO pins may be configured to push-pull or open-drain

outputs with two drive levels. GPIO may also be used as

digital inputs (CP2400/1/2/3 pullups included)

Port Match Capability can wake up host controller using

interrupt pin

self-oscillate mode requires no external crystal; accepts

external 32 kHz CMOS clock

host controller.

Controls up to 128 segments (48-pin packages) or

Supports static, 2-mux, 3-mux, and 4-mux displays

On-chip bias generation with internal charge pump

Low power blink capability

5 V Tolerant I/O

Precision time keeping with 32.768 kHz watch crystal;

36-hour programmable counter with wake up alarm

Can wake up the host controller using interrupt pin

Low power (<1.5 µA)

Two general purpose 16-bit timers

20 MHz Internal oscillator

Can be clocked from an external CMOS clock

Controller

Host

EGMENT

CP2400/1/2/3

(CP2400/2)

SMBus/I2C

(CP2401/3)

Interface

Host

SPI

L C D D

Oscillator

2 x 16-bit

256 Byte

20 MHz

Internal

Timers

SRAM

RIVER

Digital Bus Interface

Low Power

Example Applications

Packages

Ordering Part Numbers

Temperature Range: –40 to +85 °C

GPIO Expander

LCD Controller



smaRTClock

2-wire SMBus/I

synchronous external clock or up to 1 Mbps with internal

clock (CP2400/2 only).

internal clock (CP2401/3 only).

device in a low power mode. SPI devices use the NSS

pin to place the device in a low power mode.

4-wire SPI Interface operates up to 2.5 Mbps with

Dedicated RST and INT pins.

Optional CLK pin can be used as a CMOS clock input.

Optional PWR pin (SMBus/I

1.8–3.6 V operation with integrated LDO

Ultra Low Power Mode w/ LCD (<3 µA typical)

Shutdown current (0.05 µA typical)

Handheld Equipment

Utility Meters

Thermostat Display

Home Security Systems

Pb-free 48-pin QFP (9x9 mm footprint) [-Q]

Pb-free 48-pin QFN (7x7 mm footprint) [-M]

Pb-free 32-pin QFN (5x5 mm footprint)

CP2400-G[M|Q] (SPI Interface)

CP2401-G[M|Q] (SMBus/I

CP2402-GM (SPI Interface)

CP2403-GM (SMBus/I

C P 2 4 0 0 / 1 / 2 / 3

C Interface operates up to 400 kHz with

C Interface)

32.768 kHz

C devices only) places the

Digital I/O

LCD

Optional

CP2400/1/2/3

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