CP2401AB Silicon Labs

CP2400/1/2/3 128/64 SEGMENT LCD DRIVER LCD Driver Digital Bus Interface Controls up to 128 segments (48-pin packages) or 4-wire SPI Interface operates up to 2.5 Mbps with 64 segments (32-pin package) synchronous external clock or up to 1 Mbps with internal clock (CP2400/2 only). Supports static, 2-mux, 3-mux, and 4-mux displays 2 On-chip bias generation with internal charge pump 2-wire SMBus/I C Interface operates up to 400 kHz with Low power blink capability internal clock (CP2401/3 only). Dedicated RST and INT pins. GPIO Expander Optional CLK pin can be used as a CMOS clock input. Expands GPIO count by up to 36 pins (48-pin 2 Optional PWR pin (SMBus/I C devices only) places the packages) or 20 pins (32-pin package) device in a low power mode. SPI devices use the NSS GPIO pins may be configured to push-pull or open-drain pin to place the device in a low power mode. outputs with two drive levels. GPIO may also be used as digital inputs (CP2400/1/2/3 pullups included) Low Power Port Match Capability can wake up host controller using 1.83.6 V operation with integrated LDO interrupt pin Ultra Low Power Mode w/ LCD (<3 A typical) 5 V Tolerant I/O Shutdown current (0.05 A typical) Real Time Clock, SmaRTClock Example Applications Precision time keeping with 32.768 kHz watch crystal Handheld Equipment self-oscillate mode requires no external crystal accepts Utility Meters external 32 kHz CMOS clock Thermostat Display 36-hour programmable counter with wake up alarm Home Security Systems Can wake up the host controller using interrupt pin Low power (<1.5 A) Packages Pb-free 48-pin QFP (9x9 mm footprint) -Q 256 Bytes RAM Pb-free 48-pin QFN (7x7 mm footprint) -M General purpose RAM expands the memory available to Pb-free 32-pin QFN (5x5 mm footprint) host controller. Ordering Part Numbers 16-bit Timers CP2400-G M Q (SPI Interface) Two general purpose 16-bit timers 2 CP2401-G M Q (SMBus/I C Interface) Clock Sources CP2402-GM (SPI Interface) 20 MHz Internal oscillator 2 CP2403-GM (SMBus/I C Interface) Can be clocked from an external CMOS clock Temperature Range: 40 to +85 C Rev. 1.0 8/10 Copyright 2010 by Silicon Laboratories CP2400/1/2/3 CP2400/1/2/3 2 Rev. 1.0