Product Matrix

CP240x LCD Controllers

The CP240x extremely low power LCD controller devices can drive up to 128 LCD segments. These devices are easily interfaced with any microcontroller using SPI or I²C interfaces. A benefit to this approach is designers can select the best-fit MCU for the system and then add the CP240x to handle LCD requirements efficiently with respect to system size and power consumption. 

Block Diagram

 

Features

Controls up to 128 segments (48-pin packages) or 64 segments (32-pin package)
Expands GPIO count by up to 36 pins (48-pin packages) or 20 pins (32-pin package)
Ultra Low Power Mode w/ LCD (<1.7 μA typical)
General purpose RAM expands the memory available to host controller
Two general purpose 16-bit timers
20 MHz Internal oscillator
4-wire SPI Interface operates up to 2.5 Mbps with synchronous external clock or up to 1 Mbps with internal clock (CP2400/2)
2-wire SMBus/I2C Interface operates up to 400 kHz with internal clock (CP2401/3)
1.8–3.6 V operation with integrated LDO
Shutdown current (0.05 μA typical)

Applications

Handheld Equipment
Utility Meters
Thermostat Display
Home Security Systems

Resources

Documentation
  
  
  
  
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Design Tools
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Product Matrix

Part NumberAvailable DocumentsLCD SegmentsRAM (bytes)I/O PinsSerial BusTimers (16-bit)Internal Osc.Temp RangeOtherPackageDev Kit 
CP2400-GMData Sheet
Data Short		12825636SPI2Yes-40 to 85 °CUltra-low power mode48-pin QFNCP2400DKSample
Buy
CP2400-GQData Sheet
Data Short		12825636SPI2Yes-40 to 85 °CUltra-low power mode48-pin TQFPCP2400DKSample
Buy
CP2401-GMData Sheet
Data Short		12825636I2C2Yes-40 to 85 °CUltra-low power mode48-pin QFNCP2401DKSample
Buy
CP2401-GQData Sheet
Data Short		12825636I2C2Yes-40 to 85 °CUltra-low power mode48-pin TQFPCP2401DKSample
Buy
CP2402-GMData Sheet
Data Short		6425620SPI2Yes-40 to 85 °CUltra-low power mode32-pin QFNCP2400DKSample
Buy
CP2403-GMData Sheet
Data Short		6425620I2C2Yes-40 to 85 °CUltra-low power mode32-pin QFNCP2401DKSample
Buy

 

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 devices are 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.