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 High-Speed 8051 C 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 - Typical sleep mode current < 0.1 A; retains state and RAMcontents 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 - 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/compare modules and watchdog timer: Two Comparators - Programmable hysteresis and response time - Configurable as interrupt or reset source - Low current (< 0.5 A) - 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 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 supports 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 - External memory interface (multiplexed address/data) On-Chip Debug - On-chip debug circuitry facilitates full speed, non-intrusive insystem debug (no emulator required) CIP-51 8051 Controller Core 32k Byte ISP Flash Program Memory 256 Byte SRAM 4096 Byte XRAM Ultra-Small Package Options - 32-pin QFN (5x5 mm) - 32-pin LQFP (9x9 mm) Temperature Range: –40 to +85 °C Power On Reset/PMU Wake Reset Port I/O Configuration Digital Peripherals UART Timers 0, 1, 2, 3 PCA/ WDT SMBus SPI 0,1 Crossbar Control Port 1 Drivers Priority Crossbar Decoder Port 0 Drivers C2CK/RST Debug / Programming Hardware C2D 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 VDD/DC+ GND/DC- Power Net Analog Power VREG CRC Engine Digital Power SYSCLK Precision 24.5 MHz Oscillator DC/DC Converter Low Power 20 MHz Oscillator External Oscillator Circuit smaRTClock Oscillator SFR Bus Analog Peripherals 6-bit IREF Internal External VREF A M U X VDD VREF Temp Sensor GND CP0, CP0A CP1, CP1A + - VBAT GND IREF0 Port 2 Drivers XTAL1 XTAL2 XTAL3 XTAL4 VREF 10-bit 300ksps ADC System Clock Configuration + - Comparators Low-Voltage/Low-Power Copyright 2008 by Silicon Laboratories 11.11.2008 C8051F920 Single/Dual Battery, 0.9-3.6 V, 32 kB, smaRTClock, 10-Bit ADC MCU Selected Electrical Specifications (At 25 C°) Parameter Supply Input Voltage two-cell mode one-cell mode DC-DC Boost Converter Output Power (VOUT = 1.8–3.3 V) Supply Current with CPU Active Supply Current (shutdown) (VBAT = 1.8 V) Clock Frequency Range Wakeup Time Conditions DC-DC converter disabled DC-DC converter enabled Includes on and off-chip current VDD = 1.8–3.6 V Clock = 24.5 MHz (±2% internal precision oscillator) Sleep mode; smaRTClock off Sleep mode; smaRTClock running two-cell mode one-cell mode Internal Oscillator Precision oscillator Low power oscillator A/D Converter Min 1.8 0.9 — — — — DC — — 24 18 Typ — — — 4.1 50 0.6 — 2 10 24.5 20 Max 3.6 1.8 65 — — — 25 — — 25 22 10 300 Units V V mW mA nA A MHz s s MHz MHz bits ksps Frequency Resolution Throughput Rate — — Package Information: 32-Pin QFN Bottom View E/2 Package Information: 32-Pin LQFP MAX 1.00 0.05 1.00 — 0.30 — 3.25 — 3.25 — 0.50 — — — — MM A A1 A2 b c D D1 e MIN — 0.05 1.35 0.30 0.09 TYP — — 1.40 0.37 — 9.00 BSC 7.00 BSC 0.80 BSC MAX 1.60 0.15 1.45 0.45 0.20 MIN E E1 L aaa bbb ccc ddd TYP 9.00 BSC 7.00 BSC 0.60 0.20 0.20 0.10 0.20 3.5° MAX L 8 D2 / 2 7 6 17 18 19 7xe 20 D2 21 E2 / 2 E2 22 23 24 32 31 30 29 28 27 26 25 D 5 4 3 D/2 2 Pin #1 ID 1 7xe E Side View A2 A A A1 A2 A3 b D D2 E E2 e L N ND NE R MIN 0.80 0.00 0 — 0.18 — 1.25 — 1.25 — 0.30 — — — 0.09 MM TYP 0.9 0.02 0.65 0.25 0.25 5.00 2.70 5.00 2.70 0.50 0.40 32 8 8 — 10 11 12 13 14 15 16 R e b 9 A3 A1 e 0.45 0.75 0° 7° C8051F9xx Product Family Device Part # Package Flash Size RAM Size C8051F930-GQ C8051F930-GM C8051F931-GM C8051F920-GQ C8051F920-GM C8051F921-GM 32-pin LQFP 32-pin QFN 24-pin QFN 32-pin LQFP 32-pin QFN 24-pin QFN 64 kB 64 kB 64 kB 32 kB 32 kB 32 kB 4 kB 4 kB 4 kB 4 kB 4 kB 4 kB Low-Voltage/Low-Power Copyright 2008 by Silicon Laboratories 11.11.2008 Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc. Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders