c8051t617 Silicon Laboratories, c8051t617 Datasheet - Page 43

• Manufacturer Part Number: c8051t617
• Description: Mixed Signal Byte-programmable Eprom Mcu
• Manufacturer: Silicon Laboratories

5.
The ADC0 subsystem for the C8051T610/1/2/3/6 devices consists an analog multiplexer (referred to as
AMUX0) capable of selecting any Port I/O pin, the Temperature Sensor, or V
ble to 1x or 0.5x; and a 500 ksps, 10-bit successive-approximation-register (SAR) ADC with integrated
track-and-hold and programmable window detector (see block diagram in Figure 5.1). The multiplexer,
data conversion modes and window detector are all configurable under software control via the Special
Function Registers shown in Figure 5.1. ADC0 may be configured to measure any Port pin, the Tempera-
ture Sensor output, or V
bit in the ADC0 Control register (ADC0CN) is set to logic 1. The ADC0 subsystem remains in a low power
shutdown state when this bit is logic 0. A special 8-bit mode is also provided to allow faster conversions.
P1.6 and P1.7 available
on C8051T610/1/2/3/4/5
P2.6 and P2.7 available
on C8051T610/1/2/3/4/5
P3.1 and P3.4 available
on C8051T610/2
ADC0 - 10-Bit SAR ADC (C8051T610/1/2/3/6 Only)
Sensor
Temp
P1.0
P1.7
P2.0
P2.7
P3.0
P3.4
VDD
DD
Figure 5.1. ADC0 Functional Block Diagram
with respect to GND. The ADC0 subsystem is enabled only when the AD0EN
AMX0P
Analog
MUX
X1 or
X0.5
Rev. 0.3
C8051T610/1/2/3/4/5/6/7
ADC0CF
ADC
10-Bit
VDD
SAR
ADC0GTH:L
ADC0LTH:L
ADC0CN
DD
Conversion
; a gain stage programma-
Start
10
20
000
001
010
011
100
101
AD0WINT
Comb.
AD0BUSY (W)
Timer 0 Overflow
Timer 2 Overflow
Timer 1 Overflow
CNVSTR Input
Timer 3 Overflow
Logic
43