C8051F902-GM datasheet(3/318 Pages) SILABS

Part #	C8051F902-GM

Description	Single/Dual Battery,0.9-3.6 V, 16-8 kB, SmaRTClock, 12/10-Bit ADC MCU

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Manufacturer	SILABS [Silicon Laboratories]

Direct Link	http://www.silabs.com

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3 / 318 page

Rev. 1.0

3

C8051F91x-C8051F90x

Table of Contents

1. System Overview.................................................................................................... 17

1.1. CIP-51™ Microcontroller Core.......................................................................... 20

1.1.1. Fully 8051 Compatible.............................................................................. 20

1.1.2. Improved Throughput ............................................................................... 20

1.1.3. Additional Features .................................................................................. 20

1.2. Port Input/Output............................................................................................... 21

1.3. Serial Ports ....................................................................................................... 22

1.4. Programmable Counter Array ........................................................................... 22

1.5. SAR ADC with 16-bit Auto-Averaging Accumulator and



Autonomous Low Power Burst Mode ............................................................... 23

1.6. Programmable Current Reference (IREF0) ...................................................... 24

1.7. Comparators ..................................................................................................... 24

2. Ordering Information.............................................................................................. 26

3. Pinout and Package Definitions............................................................................ 27

4. Electrical Characteristics....................................................................................... 36

4.1. Absolute Maximum Specifications .................................................................... 36

4.2. Electrical Characteristics................................................................................... 37

5. SAR ADC with 16-bit Auto-Averaging Accumulator and



Autonomous Low Power Burst Mode................................................................... 61

5.1. Output Code Formatting ................................................................................... 62

5.2. Modes of Operation .......................................................................................... 63

5.2.1. Starting a Conversion............................................................................... 63

5.2.2. Tracking Modes........................................................................................ 64

5.2.3. Burst Mode ............................................................................................... 65

5.2.4. Settling Time Requirements ..................................................................... 66

5.2.5. Gain Setting.............................................................................................. 67

5.3. 8-Bit Mode......................................................................................................... 67

5.4. 12-Bit Mode (C8051F912/02 Only) ................................................................... 67

5.5. Low Power Mode (C8051F912/902 only) ......................................................... 67

5.6. Programmable Window Detector ...................................................................... 75

5.6.1. Window Detector In Single-Ended Mode ................................................. 77

5.6.2. ADC0 Specifications................................................................................. 77

5.7. ADC0 Analog Multiplexer.................................................................................. 78

5.8. Temperature Sensor ......................................................................................... 80

5.8.1. Calibration ................................................................................................ 81

5.9. Voltage and Ground Reference Options........................................................... 83

5.10.External Voltage References............................................................................ 84

5.11.Internal Voltage References ............................................................................. 84

5.12.Analog Ground Reference................................................................................ 84

5.13.Temperature Sensor Enable ............................................................................ 84

5.14.Voltage Reference Electrical Specifications ..................................................... 85

6. Programmable Current Reference (IREF0) .......................................................... 86

6.1. PWM Enhanced Mode ...................................................................................... 86

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