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C8051F974 Dataheets PDF



Part Number C8051F974
Manufacturers Silicon Laboratories
Logo Silicon Laboratories
Description Low Power Capacitive Sensing MCU
Datasheet C8051F974 DatasheetC8051F974 Datasheet (PDF)

C8051F97x Low Power Capacitive Sensing MCU with up to 32 kB of Flash Low Power Consumption - 200 µA/MHz in active mode (24.5 MHz clock) - 2 µs wakeup time - 55 nA sleep mode with brownout detector - 280 nA sleep mode with LFO - 600 nA sleep mode with external crystal Capacitance Sense Interface - Supports buttons, sliders, wheels, and proximity sensing - Fast 40 µs per channel conversion time - 16-bit resolution, up to 43 input channels - Auto scan and wake-on-touch - Auto-accumulate up to 64x s.

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C8051F97x Low Power Capacitive Sensing MCU with up to 32 kB of Flash Low Power Consumption - 200 µA/MHz in active mode (24.5 MHz clock) - 2 µs wakeup time - 55 nA sleep mode with brownout detector - 280 nA sleep mode with LFO - 600 nA sleep mode with external crystal Capacitance Sense Interface - Supports buttons, sliders, wheels, and proximity sensing - Fast 40 µs per channel conversion time - 16-bit resolution, up to 43 input channels - Auto scan and wake-on-touch - Auto-accumulate up to 64x samples 10-Bit Analog-to-Digital Converter - Up to 43 external pin input channels, up to 300 ksps - Internal VREF or external VREF supported Clock Sources - Internal oscillators: 24.5 MHz, ±2% accuracy supports UART - SmaRTClock oscillator: 32 kHz Crystal or internal LFO - Can switch between clock sources on-the-fly; useful in implementing various power-saving modes operation; 20 MHz low power oscillator requires very little bias current. External oscillator: Crystal, RC, C, or CMOS Clock High-Speed CIP-51 µC Core - Efficient, pipelined instruction architecture - Up to 25 MIPS throughput with 25 MHz clock - Uses standard 8051 instruction set - Expanded interrupt handler - 1-cycle 16 x 16 MAC Engine - 7-channel Direct Memory Access (DMA) module Memory - Up to 32 kB flash - Flash is in-system programmable in 512-Byte sectors - Up to 8 kB RAM General-Purpose I/O - Up to 43 pins with high sink current and programmable drive - Crossbar-enabled Timer/Counters and PWM - 4 general purpose 16-bit timer/counters - 16-bit Programmable Counter Array (PCA) with three channels of PWM, capture/compare, or frequency output capability, and watchdog timer Supply Voltage: 1.8 to 3.6 V - Built-in LDO regulator allows a high analog supply voltage and low digital core voltage - 2 supply monitors (brownout detector) for sleep and active modes On-Chip Debug - On-chip debug circuitry facilitates full speed, non-intrusive insystem debug (no emulator required) Provides breakpoints, single stepping, inspect/modify memory and registers Package Options - 24-pin QFN (4x4 mm) - 32-pin QFN (5x5 mm) - 48-pin QFN (6x6 mm) Temperature Ranges: –40 to +85 °C Unique Identifier - 128-bit unique key for each device Core / Memory / Support 16-32 kB Flash 4-8 kB RAM 16-bit CRC Core LDO Supply Monitor 16 x 16 MAC Digital Peripherals UART I2C / SMBus SPI 4 x 16-bit Timers 3-Channel PCA / Watchdog HS I2C Slave Priority Crossbar Encoder Flexible Pin Muxing CIP-51 (25 MHz) 7 ch. DMA C2 Serial Debug / Programming 24.5 MHz Precision Oscillator 20 MHz Low Power Oscillator smaRTClock with 16.4 kHz LFO External Oscillator Clock Selection Clocking / Oscillators Analog Peripherals SAR ADC (10-bit 300 ksps) Capacitive Sensing Voltage Reference Temperature Sensor Rev 1.0 5/14 Copyright © 2014 by Silicon Laboratories 43 Multi-Function I/O Pins C8051F97x C8051F97x 1. Electrical Characteristics .................................................................................................. 10 1.1. Electrical Characteristics .............................................................................................. 10 1.2. Thermal Conditions ...................................................................................................... 21 1.3. Absolute Maximum Ratings..........................................................................................21 2. System Overview ...............................................................................................................22 2.1. Power ........................................................................................................................... 24 2.1.1. Voltage Supply Monitor (VMON0) ....................................................................... 24 2.1.2. Device Power Modes........................................................................................... 24 2.1.3. Suspend Mode..................................................................................................... 25 2.1.4. Sleep Mode.......................................................................................................... 25 2.1.5. Low Power Active Mode ...................................................................................... 26 2.1.6. Low Power Idle Mode ..........................................................................................26 2.2. I/O................................................................................................................................. 26 2.2.1. General Features.................................................................................................26 2.2.2. Crossbar .............................................................................................................. 26 2.3. Clocking........................................................................................................................ 27 2.4. Counters/Timers and PWM ....................................................................


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