參數(shù)資料
型號: HD40A4084
廠商: Hitachi,Ltd.
英文描述: Low-Voltage AS Microcomputers with On-Chip A/D Converter(帶片上A/D轉(zhuǎn)換器的低壓微計算機(jī))
中文描述: 低電壓如同在微機(jī)芯片的A / D轉(zhuǎn)換器(帶片上的A / D轉(zhuǎn)換器的低壓微計算機(jī))
文件頁數(shù): 107/162頁
文件大?。?/td> 482K
代理商: HD40A4084
HD404374/HD404384/HD404389/HD404082/HD404084 Series
107
A/D mode register (AMR: $028):
The A/D mode register is a 4-bit write-only register that shows the A/D converter speed setting and
information on the analog input pin specification. The A/D conversion time is selected by bit 0, and the
channel by bits 1, 2, and 3 (figure 64).
A/D start flag (ADSF: $020,2):
A/D conversion is started by writing 1 to the A/D start flag. When conversion ends, the converted data is
placed in the A/D data register and the A/D start flag is cleared at the same time. (figure 65).
Bit
Read/Write
Initial value on reset
Bit name
3
W
0
AMR3
2
W
0
AMR2
1
W
0
AMR1
0
W
0
AMR0
Analog input channel selection
No selection
AN0
AN1
AN2
AN3
AN4*
AN5*
AMR1
0
1
0
1
0
1
AMR2
0
1
0
1
AMR3
0
1
AMR0
0
1
A/D conversion time
65 t
cyc
125 t
cyc
A/D mode register (AMR: $028)
Note: * Applies to the HD404389 series. This selection is not available on the HD
404374 and HD404384 series.
Figure 64 A/D Mode Register (AMR)
相關(guān)PDF資料
PDF描述
HD40C4084 Low-Voltage AS Microcomputers with On-Chip A/D Converter(帶片上A/D轉(zhuǎn)換器的低壓微計算機(jī))
HD40C4384 Low-Voltage AS Microcomputers with On-Chip A/D Converter(帶片上A/D轉(zhuǎn)換器的低壓微計算機(jī))
HD40C4388 Low-Voltage AS Microcomputers with On-Chip A/D Converter(帶片上A/D轉(zhuǎn)換器的低壓微計算機(jī))
HD40C4389 Low-Voltage AS Microcomputers with On-Chip A/D Converter(帶片上A/D轉(zhuǎn)換器的低壓微計算機(jī))
HD404394 4-bit HMCS400-series microcomputer(4位單片微計算機(jī))
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