C8051F336_08 Datasheet, PDF (37/227 Pages) Silicon Laboratories – Mixed-Signal Byte-Programmable EPROM MCU

C8051F336/7/8/9
7. 10-Bit ADC (ADC0, C8051F336/8 only)
The ADC0 on the C8051F336/8 is a 200 ksps, 10-bit successive-approximation-register (SAR) ADC with
integrated track-and-hold and programmable window detector. The ADC is fully configurable under soft-
ware control via Special Function Registers. The ADC0 operates in both Single-ended and Differential
modes, and may be configured to measure various different signals using the analog multiplexer described
in Section “7.4. ADC0 Analog Multiplexer (C8051F336/8 only)” on page 48. The voltage reference for
the ADC is selected as described in Section “8. Temperature Sensor (C8051F336/8 only)” on page 51.
The ADC0 subsystem is enabled only when the AD0EN bit in the ADC0 Control register (ADC0CN) is set
to logic 1. The ADC0 subsystem is in low power shutdown when this bit is logic 0.
ADC0CN
From
AMUX0
AIN+
AIN-
VDD
10-Bit
SAR
ADC
000
Start
Conversion ⁰⁰¹
010
011
100
101
AD0BUSY (W)
Timer 0 Overflow
Timer 2 Overflow
Timer 1 Overflow
CNVSTR Input
Timer 3 Overflow
ADC0LTH ADC0LTL
AD0WINT
Window
Compare
32 _Logic
ADC0CF
ADC0GTH ADC0GTL
Figure 7.1. ADC0 Functional Block Diagram
Rev.1.0
37