Z51F3220FNX Datasheet, PDF (186/312 Pages) Zilog, Inc. – Z8051 Series 8-Bit Microcontrollers

Z51F3220
Product Specification
ADCCRL (A/D Converter Counter Low Register) : 9CH
7
6
5
4
3
STBY
ADST
REFSEL
AFLAG
ADSEL3
R/W
R/W
R/W
R
R/W
2
ADSEL2
R/W
1
0
ADSEL1
ADSEL0
R/W
R/W
Initial value : 00H
STBY
ADST
REFSEL
AFLAG
ADSEL[3:0]
Control Operation of A/D
(The ADC module is automatically disabled at stop mode)
0
ADC module disable
1
ADC module enable
Control A/D Conversion stop/start.
0
No effect
1
ADC Conversion Start and auto clear
A/D Converter Reference Selection
0
Internal Reference (VDD)
1
External Reference (AVREF)
A/D Converter Operation State (This bit is cleared to ‘0’ when the STBY
bit is set to ‘0’ or when the CPU is at STOP mode)
0
During A/D Conversion
1
A/D Conversion finished
A/D Converter input selection
ADSEL3 ADSEL2 ADSEL1 ADSEL0 Description
0
0
0
0
AN0
0
0
0
1
AN1
0
0
1
0
AN2
0
0
1
1
AN3
0
1
0
0
AN4
0
1
0
1
AN5
0
1
1
0
AN6
0
1
1
1
AN7
1
0
0
0
AN8
1
0
0
1
AN9
1
0
1
0
AN10
1
0
1
1
AN11
1
1
0
0
AN12
1
1
0
1
AN13
1
1
1
0
AN14
1
1
1
1
AN15
PS029902-0212
PRELIMINARY
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