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參數(shù)資料
| 型號： | HD404092 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 4-Bit Single-Chip Microcomputer(4位單片微計算機(jī)) |
| 中文描述： | 4位單片機(jī)（4位單片微計算機(jī)） |
| 文件頁數(shù)： | 77/101頁 |
| 文件大?。?/td> | 610K |
| 代理商： | HD404092 |
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HD404054 Series/HD404094 Series
77
Compare Enable Register (CER: $018):
Three-bit write-only register which enables comparator
operation, and selects the reference voltage and the analog input pin (figure 61).
Bit
Initial value
Read/Write
Bit name
3
0
W
CER3
2
—
—
Not used
0
0
W
CER0
1
0
W
CER1
Compare enable register (CER: $018)
CER3
0
Digital/Analog selection
Digital input mode:
RD /COMP
0
, RD /COMP
1
operate as R port
1
Analog input mode:
RD /COMP
0
, RD /COMP
1
operate as analog input
CER1
0
1
Analog input pin selection
COMP
0
COMP
1
Not used
Not used
CER0
0
1
0
1
Figure 61 Compare Enable Register
Compare Data Register (CDR: $017):
Two-bit read-only register which latches the result of the
comparison between the analog input pins and the reference voltage. Bits 0 and 1 corresponds the results
of comparison with COMP
0
and COMP
1
, respectively. This register can be read only by the TM or TMD
command. Only bit CER3 corresponds to the analog input pin which the input pin selection is made
through pins CER0 and CER1. After a compare operation, the data in this register is not retained (figure
62).
Bit
Initial value
Read/Write
Bit name
3
—
—
Not used
2
—
—
Not used
0
R
CDR0
1
R
CDR1
Compare data register (CDR: $017)
Undefined Undefined
Result of COMP
0
comparison
Result of COMP
1
comparison
Figure 62 Compare Data Register
Note on Use:
During the compare operation pins RD
0
/COMP
0
and RD
1
/COMP
1
operate as analog inputs
and cannot operate as R ports.
The comparator can operate in active mode but is disabled in other modes.
RE
0
/VC
ref
cannot operate as an R port when the external input voltage is selected as the reference.
相關(guān)PDF資料 |
PDF描述 |
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| HD404094 | 4-Bit Single-Chip Microcomputer(4位單片微計算機(jī)) |
| HD4074094 | 4-Bit Single-Chip Microcomputer(4位單片微計算機(jī)) |
| HD404052 | 4-Bit Single-Chip Microcomputer(4位單片微計算機(jī)) |
| HD404054 | 4-Bit Single-Chip Microcomputer(4位單片微計算機(jī)) |
| HD4074054H | 4-Bit Single-Chip Microcomputer(4位單片微計算機(jī)) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD404092H | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:microcomputer designed to increase program productivity |
| HD404092S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
| HD404094 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:HMCS400-series microcomputers designed to increase program productivity with large-capacity memory |
| HD404094H | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:microcomputer designed to increase program productivity |
| HD404094S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
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