C8051F920-GQR データシートの表示（PDF） - Silicon Laboratories
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C8051F920-GQR Datasheet PDF : 2 Pages
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C8051F920
Single/Dual Battery, 0.9-3.6 V, 32 kB, smaRTClock, 10-Bit ADC MCU
Supply Voltage: 0.9 to 3.6 V
- One-cell mode supports 0.9–1.8 V operation
- Two-cell mode supports 1.8–3.6 V operation
- Built-in dc-dc converter with 1.8 –3.3 V output (65 mW max) for
use in one-cell mode; can supply external devices
- Typical sleep mode current < 0.1 µA; retains state and RAM-
contents over full supply range; fast wakeup
- 2 built-in brown-out detectors cover sleep and active modes
10-Bit Analog to Digital Converter
- Up to 300 ksps
- Up to 23 external inputs
- External pin or internal VREF (no external capacitor required)
- Built-in temperature sensor
- External conversion start input option
- Autonomous Burst Mode with 16-bit automatic averaging
accumulator
Two Comparators
- Programmable hysteresis and response time
- Configurable as interrupt or reset source
- Low current (< 0.5 µA)
- Up to 23 Capacitive Touch Sense inputs
Memory
- 4352 bytes internal data RAM (256 + 4K)
- 32 kB bytes Flash; In-system programmable in 1024-byte
sectors; Full read/write/erase functionality over the entire
supply range
- External memory interface (multiplexed address/data)
On-Chip Debug
- On-chip debug circuitry facilitates full speed, non-intrusive in-
system debug (no emulator required)
High-Speed 8051 µC Core
- Pipe-lined instruction architecture; executes 70% of instructions
in 1 or 2 system clocks
- 25 MIPS peak throughput with 25 MHz clock
- Expanded interrupt handler
Digital Peripherals
- 24 port I/O; All 5 V tolerant with programmable drive strength
- Hardware enhanced UART, SPI and SMBus™ serial ports
available concurrently
- Low power 32-bit smaRTClock (0.5 uA) operates down to 0.9V
- Four general purpose 16-bit counter/timers
- 16-bit programmable counter array (PCA) with six capture/com-
pare modules and watchdog timer:
• 8, 9, 10, 11, or 16-bit PWM
• Rising/falling edge capture
• Frequency output
• Software timer
Clock Sources
- Precision internal oscillators: 24.5 MHz with ±2% accuracy sup-
ports UART operation; spread-spectrum mode for reduced EMI
- Low power internal oscillator: 20 MHz
- External oscillator: Crystal, RC, C, CMOS clock
- smaRTClock oscillator: 32.768 kHz crystal or self-oscillate
- Can switch between clock sources on-the-fly; useful in power
saving modes
Ultra-Small Package Options
- 32-pin QFN (5x5 mm)
- 32-pin LQFP (9x9 mm)
Temperature Range: –40 to +85 °C
C2CK/RST
VDD/DC+
GND/DC-
VBAT
GND
XTAL3
XTAL4
Power On
Reset/PMU
Wake
Reset
Debug /
Programming
Hardware
CIP-51 8051
Controller Core
32k Byte ISP Flash
Program Memory
256 Byte SRAM
4096 Byte XRAM
C2D
Power Net
Analog
Power
VREG
Digital
Power
CRC
Engine
SYSCLK
DC/DC
Converter
Precision
24.5 MHz
Oscillator
Low Power
20 MHz
Oscillator
XTAL1
XTAL2
External
Oscillator
Circuit
SFR
Bus
smaRTClock
Oscillator
System Clock
Configuration
Port I/O Configuration
Digital Peripherals
UART
Timers 0,
1, 2, 3
PCA/
WDT
Priority
Crossbar
Decoder
SMBus
SPI 0,1
Crossbar Control
Analog Peripherals
6-bit
IREF
IREF0
Internal External
VREF VREF
10-bit
300ksps
A
M
U
ADC
X
VDD
VREF
Temp
Sensor
GND
CP0, CP0A +
-
CP1, CP1A +
-
Comparators
Port 0
Drivers
Port 1
Drivers
Port 2
Drivers
P0.0/VREF
P0.1/AGND
P0.2/XTAL1
P0.3/XTAL2
P0.4/TX
P0.5/RX
P0.6/CNVSTR
P0.7/IREF0
P1.0/AD0
P1.1/AD1
P1.2/AD2
P1.3/AD3
P1.4/AD4
P1.5/AD5
P1.6/AD6
P1.7/AD7
P2.0/A8
P2.1/A9
P2.2/A10
P2.3/A11
P2.4/ALE
P2.5/RD
P2.6/WR
P2.7/C2D
Low-Voltage/Low-Power
Copyright © 2008 by Silicon Laboratories
11.11.2008
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