C8051F980-C-GM Datasheet, PDF (2/325 Pages) Silicon Laboratories – Ultra Low Power, 8-2 kB Flash, Capacitive Sensing MCU

C8051F99x-C8051F98x
Table of Contents
1. System Overview.................................................................................................... 17
1.1. CIP-51™ Microcontroller Core.......................................................................... 25
1.1.1. Fully 8051 Compatible.............................................................................. 25
1.1.2. Improved Throughput ............................................................................... 25
1.1.3. Additional Features .................................................................................. 25
1.2. Port Input/Output............................................................................................... 26
1.3. Serial Ports ....................................................................................................... 27
1.4. Programmable Counter Array ........................................................................... 27
1.5. SAR ADC with 16-bit Auto-Averaging Accumulator and Autonomous Low Power
Burst Mode.......................................................................................................... 28
1.6. Programmable Current Reference (IREF0) ...................................................... 29
1.7. Comparator ....................................................................................................... 29
2. Ordering Information.............................................................................................. 31
3. Pinout and Package Definitions............................................................................ 32
4. Electrical Characteristics....................................................................................... 48
4.1. Absolute Maximum Specifications .................................................................... 48
4.2. Electrical Characteristics................................................................................... 49
5. SAR ADC with 16-bit Auto-Averaging Accumulator and Autonomous Low Power
Burst Mode ............................................................................................................. 66
5.1. Output Code Formatting ................................................................................... 67
5.2. Modes of Operation .......................................................................................... 68
5.2.1. Starting a Conversion............................................................................... 68
5.2.2. Tracking Modes........................................................................................ 69
5.2.3. Burst Mode ............................................................................................... 70
5.2.4. Settling Time Requirements ..................................................................... 71
5.2.5. Gain Setting.............................................................................................. 72
5.3. 8-Bit Mode......................................................................................................... 72
5.4. 12-Bit Mode (C8051F980/6 and C8051F990/6 devices only)........................... 72
5.5. Low Power Mode .............................................................................................. 72
5.6. Programmable Window Detector ...................................................................... 80
5.6.1. Window Detector In Single-Ended Mode ................................................. 82
5.6.2. ADC0 Specifications................................................................................. 82
5.7. ADC0 Analog Multiplexer.................................................................................. 83
5.8. Temperature Sensor ......................................................................................... 85
5.8.1. Calibration ................................................................................................ 86
5.9. Voltage and Ground Reference Options........................................................... 88
5.10.External Voltage Reference.............................................................................. 89
5.11.Internal Voltage Reference............................................................................... 89
5.12.Analog Ground Reference................................................................................ 89
5.13.Temperature Sensor Enable ............................................................................ 89
5.14.Voltage Reference Electrical Specifications ..................................................... 90
6. Programmable Current Reference (IREF0) .......................................................... 91
6.1. PWM Enhanced Mode ...................................................................................... 91
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Rev. 1.2