upd17072 Renesas Electronics Corporation., upd17072 Datasheet - Page 98
upd17072
Manufacturer Part Number
upd17072
Description
4-bit Single-chip Microcontroller With Hardware For Digital Tuning System
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD17072.pdf
(226 pages)
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13. A/D CONVERTER
13.1 General
judge the comparison result via software, and converts the analog signal into a 4-bit digital signal.
98
Remarks 1. ADCCH0 and ADCCH1 (bits 0 and 1 of A/D converter channel select register. Refer to Figure 13-
Figure 13-1 outlines the A/D converter.
The A/D converter compares an analog voltage input to the AD0 or AD1 pins with the internal compare voltage,
The comparison result can be detected by the ADCCMP flag.
As the comparison method, successive approximation is employed.
2. ADCCMP (bit 0 of A/D converter compare result detection register. Refer to Figure 13-7) detects
4) select the pin used for the A/D converter.
the result of comparison.
P1A2/AD0
P1A3/AD1
Figure 13-1. Outline of A/D Converter
Compare voltage
generator block
(R-string D/A
converter)
Input selector
block
ADCCH1 flag
ADCCH0 flag
Compare
block
Set/reset
ADCCMP flag
PD17072,17073
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