C8051F320-TB Silicon Laboratories Inc, C8051F320-TB Datasheet - Page 39

• Manufacturer Part Number: C8051F320-TB
• Description: BOARD PROTOTYPING W/C8051F320
• Manufacturer: Silicon Laboratories Inc
• Type: MCUr

Specifications of C8051F320-TB

• Contents: Board
• Processor To Be Evaluated: C8051F320/F321
• Interface Type: USB
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: C8051F320
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

5.
The ADC0 subsystem for the C8051F320/1 consists of two analog multiplexers (referred to collectively as
AMUX0) with 17 total input selections, and a 200 ksps, 10-bit successive-approximation-register ADC with
integrated track-and-hold and programmable window detector. The AMUX0, data conversion modes, and
window detector are all configurable under software control via the Special Function Registers shown in
Figure 5.1. ADC0 operates in both Single-ended and Differential modes, and may be configured to mea-
sure P1.0-P3.0, the Temperature Sensor output, or VDD with respect to P1.0-P3.0, VREF, or GND. 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.
available on
C8051F320
available on
C8051F320
P2.4-2.7
P2.4-2.7
10-Bit ADC (ADC0)
Sensor
Temp
VREF
GND
P1.0
P1.7
P2.0
P2.7
P3.0
VDD
P1.0
P1.7
P2.0
P2.7
P3.0
Figure 5.1. ADC0 Functional Block Diagram
19-to-1
19-to-1
AMUX
AMUX
AMX0P
AMX0N
Rev. 1.4
(+)
(-)
ADC0CF
ADC
10-Bit
VDD
SAR
ADC0GTH ADC0GTL
ADC0LTH
ADC0CN
C8051F320/1
ADC0LTL
Conversion
Start
000
001
010
011
100
101
32
AD0WINT
Compare
Window
AD0BUSY (W)
Timer 0 Overflow
Timer 2 Overflow
Timer 1 Overflow
CNVSTR Input
Timer 3 Overflow
Logic
39