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參數(shù)資料
| 型號(hào)： | HD404394S |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 4-bit HMCS400-series microcomputer(4位單片微計(jì)算機(jī)) |
| 中文描述： | 4位HMCS400系列微電腦（4位單片微計(jì)算機(jī)） |
| 文件頁(yè)數(shù)： | 24/100頁(yè) |
| 文件大小： | 610K |
| 代理商： | HD404394S |
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HD404344R Series/HD404394 Series
24
Table 1
Initial Values After MCU Reset (cont)
Item
Abbr.
Initial Value
Contents
A/D
A/D mode register 1
(AMR1)
0000
Refer to description of A/D mode
register
A/D mode register 2
(AMR2)
- - - 0
Refer to description of A/D mode
register
Bit register
Watchdog timer on flag
(WDON)
0
Refer to description of timer C
A/D start flag
(ADSF)
0
Refer to description of A/D
converter
I
AD
off flag
(IAOF)
0
Refer to description of A/D
converter
Others
Miscellaneous register
(MIS)
00 - -
Refer to description of I/O, and
serial interface
Notes: 1. The statuses of other registers and flags after MCU reset are shown in the following table.
2. X indicates invalid value. – indicates that the bit does not exist.
Table 1
Initial Values After MCU Reset (cont)
After Stop Mode
Release by
STOPC
Input
After Stop Mode
Release by
RESET
Input
After Other Types
of MCU Reset
Carry
(CA)
Program needs to initialize these registers.
Program needs to
initialize these
registers.
Accumulator
(A)
B register
(B)
W register
(W)
X/SPX register
(X/SPX)
Y/SPY register
(Y/SPY)
Serial data register
(SRU, SRL)
A/D data register
(ADRU, ADRL)
RAM
Data before entering stop mode are kept.
RAM enable flag
(RAME)
1
0
0
Port mode register B
bit 3
(PMRB3)
Data before entering
stop mode are kept.
0
0
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