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C8051F981 데이터시트 PDF




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부품번호 C8051F981 기능
기능 (C8051F98X / C8051F99X) Capacitive Sensing MCU
제조업체 Silicon Laboratories
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C8051F981 데이터시트, 핀배열, 회로
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 measur-
ing 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
Capacitive Sense Interface (F99x)
- Supports buttons, sliders, wheels, and capacitive
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
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
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
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
On-Chip Debug
- On-chip debug circuitry facilitates full-speed, non-
intrusive 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
DIGITAL I/O
A 12/10-bit
M 75/300 ksps IREF
U
X
ADC
TEMP
VREF
SENSOR VREG
Capacitive
Sense
+
VOLTAGE
COMPARATOR
UART
SMBus
SPI
PCA
Timer 0
Timer 1
Timer 2
Timer 3
CRC
Port 0
Port 1
Port 2
24.5 MHz PRECISION
INTERNAL OSCILLATOR
20 MHz LOW POWER
INTERNAL OSCILLATOR
External Oscillator
HARDWARE smaRTClock
HIGH-SPEED CONTROLLER CORE
8/4/2 kB
ISP FLASH
FLEXIBLE
INTERRUPTS
8051 CPU
(25 MIPS)
DEBUG
CIRCUITRY
512B SRAM
POR WDT
Rev. 1.0 11/10
Copyright © 2010 by Silicon Laboratories
C8051F99x-C8051F98x
www.DataSheet.in




C8051F981 pdf, 반도체, 판매, 대치품
C8051F99x-C8051F98x
13.4.Interrupt Latency............................................................................................. 138
13.5.Interrupt Register Descriptions ....................................................................... 140
13.6.External Interrupts INT0 and INT1.................................................................. 147
14. Flash Memory ....................................................................................................... 149
14.1.Programming the Flash Memory .................................................................... 149
14.1.1.Flash Lock and Key Functions ............................................................... 149
14.1.2.Flash Erase Procedure .......................................................................... 150
14.1.3.Flash Write Procedure ........................................................................... 150
14.2.Non-volatile Data Storage .............................................................................. 150
14.3.Security Options ............................................................................................. 151
14.4.Determining the Device Part Number at Run Time ........................................ 153
14.5.Flash Write and Erase Guidelines .................................................................. 155
14.5.1.VDD Maintenance and the VDD Monitor ................................................. 155
14.5.2.PSWE Maintenance ............................................................................... 156
14.5.3.System Clock ......................................................................................... 156
14.6.Minimizing Flash Read Current ...................................................................... 157
15. Power Management.............................................................................................. 161
15.1.Normal Mode .................................................................................................. 162
15.2.Idle Mode........................................................................................................ 163
15.3.Stop Mode ...................................................................................................... 163
15.4.Suspend Mode ............................................................................................... 164
15.5.Sleep Mode .................................................................................................... 164
15.6.Configuring Wakeup Sources......................................................................... 165
15.7.Determining the Event that Caused the Last Wakeup.................................... 165
15.8.Power Management Specifications ................................................................ 169
16. Cyclic Redundancy Check Unit (CRC0) ............................................................. 170
16.1.CRC Algorithm................................................................................................ 170
16.2.Preparing for a CRC Calculation .................................................................... 172
16.3.Performing a CRC Calculation ....................................................................... 172
16.4.Accessing the CRC0 Result ........................................................................... 172
16.5.CRC0 Bit Reverse Feature............................................................................. 177
17. Voltage Regulator (VREG0) ................................................................................. 178
17.1.Voltage Regulator Electrical Specifications .................................................... 178
18. Reset Sources....................................................................................................... 179
18.1.Power-On Reset ............................................................................................. 180
18.2.Power-Fail Reset ............................................................................................ 180
18.3.External Reset ................................................................................................ 182
18.4.Missing Clock Detector Reset ........................................................................ 182
18.5.Comparator0 Reset ........................................................................................ 183
18.6.PCA Watchdog Timer Reset .......................................................................... 183
18.7.Flash Error Reset ........................................................................................... 183
18.8.SmaRTClock (Real Time Clock) Reset .......................................................... 183
18.9.Software Reset ............................................................................................... 184
19. Clocking Sources ................................................................................................. 186
19.1.Programmable Precision Internal Oscillator ................................................... 187
4
www.DataSheet.in
Rev. 1.0

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C8051F981 전자부품, 판매, 대치품
C8051F99x-C8051F98x
25.3.1.16-bit Timer with Auto-Reload................................................................ 292
25.3.2.8-Bit Timers with Auto-Reload ............................................................... 293
25.3.3.SmaRTClock/External Oscillator Capture Mode .................................... 294
26. Programmable Counter Array ............................................................................. 298
26.1.PCA Counter/Timer ........................................................................................ 299
26.2.PCA0 Interrupt Sources.................................................................................. 300
26.3.Capture/Compare Modules ............................................................................ 301
26.3.1.Edge-triggered Capture Mode................................................................ 302
26.3.2.Software Timer (Compare) Mode........................................................... 303
26.3.3.High-Speed Output Mode ...................................................................... 304
26.3.4.Frequency Output Mode ........................................................................ 304
26.3.5. 8-bit, 9-bit, 10-bit and 11-bit Pulse Width Modulator Modes ................. 305
26.3.6. 16-Bit Pulse Width Modulator Mode...................................................... 308
26.4.Watchdog Timer Mode ................................................................................... 309
26.4.1.Watchdog Timer Operation .................................................................... 309
26.4.2.Watchdog Timer Usage ......................................................................... 310
26.5.Register Descriptions for PCA0...................................................................... 311
27. C2 Interface ........................................................................................................... 317
27.1.C2 Interface Registers.................................................................................... 317
27.2.C2 Pin Sharing ............................................................................................... 320
Document Change List............................................................................................. 321
Contact Information.................................................................................................. 322
www.DataSheet.in
Rev. 1.0
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관련 데이터시트

부품번호상세설명 및 기능제조사
C8051F980

(C8051F98X / C8051F99X) Capacitive Sensing MCU

Silicon Laboratories
Silicon Laboratories
C8051F981

(C8051F98X / C8051F99X) Capacitive Sensing MCU

Silicon Laboratories
Silicon Laboratories

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