C8051F99x-C8051F98x
Ultra Low Power, 8-2 kB Flash, Capacitive Sensing MCU
Ultra Low Power Consumption
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150 µA/MHz in active mode (24.5 MHz clock)
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2 µs wakeup time
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10 nA sleep mode with memory retention
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50 nA sleep mode with brownout detector
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300 nA sleep mode with LFO
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600 nA sleep mode with external crystal
Supply Voltage 1.8 to 3.6 V
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Built-in LDO regulator allows a high analog supply
voltage and low digital core voltage
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2 built-in supply monitors (brownout detector) for
sleep mode and active modes
12-Bit or 10-Bit Analog to Digital Converter
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±1 LSB INL (10-bit mode); ±1.5 LSB INL
(12-bit mode) no missing codes
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Programmable throughput up to 300 ksps
(10-bit mode) or 75 ksps (12-bit mode)
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Up to 10 external inputs
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On-chip voltage reference; 0.5x gain allows measur-
ing voltages up to twice the reference voltage
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16-bit auto-averaging accumulator with burst mode
provides increased ADC resolution
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Data dependent windowed interrupt generator
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Built-in temperature sensor
High-Speed 8051 µC Core
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Pipelined instruction architecture; executes 70% of
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Memory
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512 bytes RAM
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8 kB (F990/1/6/7, F980/1/6/7), 4 kB (F982/3/8/9), or
2 kB (F985) Flash; in-system programmable
instructions in 1 or 2 system clocks
Up to
25 MIPS
throughput with 25 MHz clock
Expanded interrupt handler
Digital Peripherals
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Up to 17 port I/O; high sink current and
programmable drive strength
Hardware SMBus™/I
2
C™, 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
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Internal oscillators: 24.5 MHz, 2% accuracy
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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)
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Supports buttons, sliders, wheels, and capacitive
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Analog Comparator
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Programmable hysteresis and response time
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Configurable as wake-up or reset source
6-Bit Programmable Current Reference
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Up to ±500 µA, can be used as a bias or for
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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
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On-chip debug circuitry facilitates full-speed, non-
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Packages
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20-pin QFN (3 x 3 mm)
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24-pin QFN (4 x 4 mm)
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24-pin QSOP (easy to hand-solder)
Temperature Range: –40 to +85 °C
intrusive in-system debug (no emulator required)
Provides breakpoints, single stepping
Inspect/modify memory and registers
Complete development kit
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
SILABS [ SILICON LABORATORIES ]
