參數資料
型號: HD404358H
廠商: Hitachi,Ltd.
英文描述: 4-bit HMCS400-Series microcomputer
中文描述: 4位HMCS400系列微機
文件頁數: 74/100頁
文件大?。?/td> 398K
代理商: HD404358H
HD404358 Series
74
A/D Channel Register (ACR: $016):
Three-bit write-only register which indicates analog input pin
information, as shown in figure 65.
Bit
Initial value
Read/Write
Bit name
3
Not used
2
0
W
ACR2
0
0
W
ACR0
1
0
W
ACR1
A/D channel register (ACR: $016)
0
0
1
0
1
0
1
0
1
0
1
Analog Input Selection
AN
0
AN
1
AN
2
AN
3
AN
4
AN
5
AN
6
AN
7
ACR1
ACR2
ACR0
0
1
1
Figure 65 A/D Channel Register (ACR)
A/D Start Flag (ADSF: $02C, Bit 2):
One-bit flag that initiates A/D conversion when set to 1. At the
completion of A/D conversion, the converted data is stored in the A/D data register and the A/D start flag is
cleared. Refer to figure 66.
Bit
Initial value
Read/Write
Bit name
3
Not used
2
0
R/W
ADSF
1
0
W
WDON
A/D start flag (ADSF: $020, bit 2)
Refer to the description of timers
WDON
0
1
A/D conversion completed
A/D conversion started
A/D Start Flag (ADSF)
0
Not used
Figure 66 A/D Start Flag (ADSF)
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