Single/Dual Battery, 0.9–3.6 V, 16–8 kB, SmaRTClock, 12/10-Bit ADC MCUC8051F91x-C8051F90xRev. 1.3 11/13Copyright © 2013 by Silicon LaboratoriesC8051F91x-C8051F90xUltra-Low Power-160 µA/MHz in active mode (24.5 MHz clock)-2 µs wake-up time (two-cell mode)-10 nA sleep mode with memory retention-50 nA sleep mode with brownout detector-300 nA sleep mode with LFO (‘F912/02 only)-600 nA sleep mode with external crystalSupply Voltage 0.9 to 3.6 V-One-cell mode supports 0.9 to 1.8 V operation(‘F911/01). ‘F912 and ‘F902 devices can operatefrom 0.9 to 3.6 V continuously-Two-cell mode supports 1.8 to 3.6 V operation-Built-in dc-dc converter with 1.8 to 3.3 V output foruse in one-cell mode-Built-in LDO regulator allows a high analog supplyvoltage and low digital core voltage-2 built-in supply monitors (brownout detectors)12-Bit or 10-Bit Analog to Digital Converter-±1 LSB INL (10-bit mode); ±1.5 LSB INL (12-bitmode, ‘F912/02 only) no missing codes-Programmable throughput up to 300 ksps (10-BitMode) or 75 ksps (12-bit mode, ‘F912/02 only)-Up to 15 external inputs-On-chip voltage reference-On-chip PGA allows measuring voltages up to twicethe reference voltage-16-bit auto-averaging accumulator with burst modeprovides increased ADC resolution-Data dependent windowed interrupt generator-Built-in temperature sensorTwo Comparators-Programmable hysteresis and response time-Configurable as wake-up or reset source-Up to 15 Capacitive Touch Sense Inputs6-Bit Programmable Current Reference-Up to ±500 µA. Can be used as a bias or forgenerating a custom reference voltage-PWM enhanced mode on ‘F912/02 devicesHigh-Speed 8051 µC Core-Pipelined instruction architecture; executes 70% ofinstructions in 1 or 2 system clocks-Up to 25 MIPS throughput with 25 MHz clock-Expanded interrupt handlerMemory-768 bytes RAM-16 kB (‘F912/1) or 8 kB (‘F902/1) Flash; In-systemprogrammableDigital Peripherals-16 port I/O; All 5 V tolerant with high sink currentand programmable drive strength-Hardware SMBus™ (I2C™ Compatible), 2 x SPI™,and UART serial ports available concurrently-Four general purpose 16-bit counter/timers-Programmable 16-bit counter/timer array with sixcapture/compare modules and watchdog timerClock Sources-Internal oscillators: 24.5 MHz, 2% accuracysupports UART operation; 20 MHz low poweroscillator requires very little bias current-External oscillator: Crystal, RC, C, or CMOS clock-SmaRTClock oscillator: 32 kHz crystal or internallow frequency oscillator (‘F912/02) or self-oscillatemode-Can switch between clock sources on-the-fly; usefulin implementing various power saving modesOn-Chip Debug-On-chip debug circuitry facilitates full-speed, non-intrusive in-system debug (no emulator required)-Provides 4 breakpoints, single stepping-Inspect/modify memory and registers-Complete development kitPackages-24-pin QFN (4x4 mm)-24-pin QSOP (easy to hand-solder)-Tested die availableTemperature Range: –40 to 85 °CANALOGPERIPHERALS12/10-bit75/300 kspsADC16/8 kBISP FLASH768 B SRAMPORDEBUGCIRCUITRYFLEXIBLEINTERRUPTS8051 CPU(25 M IPS)TEMPSENSO RDIGITAL I/O24.5 MHz PRECISIONINTERNAL OSCILLATO RHIGH-SPEED CONTROLLER COREAMUXVOLTAGECOM PARATORS –WDTUARTSM BusPCATim er 0Tim er 1Tim er 2Tim er 3Port 02 x SPIIREFPort 1Port 2 –VREG20 MHz LO W PO WERINTERNAL O SCILLATO RVREFCRCHARDW ARE Sm aRTClockExternal Oscillator
