C8051F99x-C8051F98x
Ultra Low Power, 8-2 kB Flash, Capacitive Sensing MCU
Ultra Low Power Consumption - 150 μA/MHz in active mode (24.5 MHz clock) - 2 μs wakeup time - 10 nA sleep mode with memory retention - 50 nA sleep mode with brownout detector - 300 nA sleep mode with LFO - 600 nA sleep mode with external crystal Supply Voltage 1.8 to 3.6 V - Built-in LDO regulator allows a high analog supply
voltage and low digital core voltage - 2 built-in supply monitors (brownout detector) for sleep mode and active modes 12-Bit or 10-Bit Analog to Digital Converter - ±1 LSB INL (10-bit mode); ±1.5 LSB INL ? (12-bit mode) no missing codes - Programmable throughput up to 300 ksps ? (10-bit mode) or 75 ksps (12-bit mode) - Up to 10 external inputs - On-chip voltage reference; 0.5x gain allows measuring voltages up to twice the reference voltage - 16-bit auto-averaging accumulator with burst mode provides increased ADC resolution - Data dependent windowed interrupt generator - Built-in temperature sensor
High-Speed 8051 μC Core - Pipelined instruction architecture; executes 70% of
instructions in 1 or 2 system clocks
- Up to 25 MIPS throughput with 25 MHz clock - Expanded interrupt handler Memory - 512 bytes RAM - 8 kB (F990/1/6/7, F980/1/6/7), 4 kB (F982/3/8/9), or
2 kB (F985) Flash; in-system programmable
Digital Peripherals - Up to 17 port I/O; high sink current and
programmable drive strength? Hardware SMBus?/I2C?, SPI?, and UART serial ports available concurrently Four general purpose 16-bit counter/timers Programmable 16-bit counter/timer array with three capture/compare modules and watchdog timer
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Clock Sources - Internal oscillators: 24.5 MHz, 2% accuracy supports UART operation; 20 MHz low power oscillator requires very little bias current. External oscillator: Crystal, RC, C, or CMOS Clock SmaRTClock oscillator: 32 kHz Crystal or internal Can switch between clock sources on-the-fly; useful in implementing various power saving modes
Capacitive Sense Interface (F99x) - Supports buttons, sliders, wheels, and capacitive Analog Comparator - Programmable hysteresis and response time - Configurable as wake-up or reset source 6-Bit Programmable Current Reference - Up to ±500 μA, can be used as a bias or for generating a custom reference voltage PWM enhanced resolution mode proximity sensing Fast 40 μs per channel conversion time 16-bit resolution, up to 14 input channels Auto scan and wake-on-touch Auto-accumulate up to 64x samples
On-Chip Debug - On-chip debug circuitry facilitates full-speed, nonintrusive in-system debug (no emulator required)
- Provides breakpoints, single stepping - Inspect/modify memory and registers - Complete development kit Packages - 20-pin QFN (3 x 3 mm) - 24-pin QFN (4 x 4 mm) - 24-pin QSOP (easy to hand-solder) Temperature Range: –40 to +85 °C
ANALOG PERIPHERALS
A M U X
DIGITAL I/O
UART SM Bus SPI PCA Timer 0 Timer 1 Timer 2 Timer 3 CRC Port 0 CROSSBAR
12/10-bit 75/300 ksps ADC
VREF
+
IREF
Port 1
TEM P SENSOR Capacitive Sense
VREG
– VOLTAG E COM PAR ATO R
Port 2
24.5 M Hz PRECISION INTERNAL OSCILLATOR External Oscillator
20 MHz LOW POW ER INTERNAL OSCILLATOR HARDW ARE sm aRTClock
HIGH-SPEED CONTROLLER CORE 8/4/2 kB ISP FLASH FLEXIBLE INTERRUPTS 8051 CPU (25 M IPS) DEBUG CIRCUITRY 512B SRAM POR W DT
Rev. 1.0 11/10
Copyright ? 2010 by Silicon Laboratories
C8051F99x-C8051F98x
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C8051F99x-C8051F98x
Table of Contents
1. System Overview.................................................................................................... 17 1.1. CIP-51? Microcontroller Core.......................................................................... 25 1.1.1. Fully 8051 Compatible.............................................................................. 25 1.1.2. Improved Throughput ............................................................................... 25 1.1.3. Additional Features ..............................................................
