參數(shù)資料
型號: HD40A4639R
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): 15/133頁
文件大?。?/td> 803K
代理商: HD40A4639R
HD404639R Series
15
Item
Abbr.
Initial
Value
Contents
Timer/
counters,
Serial mode register 1A
(SM1A)
0000
Refer to description of serial mode
register 1A
serial
interface
Serial mode register 1B
(SM1B)
- - X0
Refer to description of serial mode
register 1B
Serial mode register 2A
(SM2A)
0000
Refer to description of serial mode
register 2A
Serial mode register 2B
(SM2B)
- 0X0
Refer to description of serial mode
register 2B
Prescaler S
(PSS)
$000
Prescaler W
(PSW)
$00
Timer counter A
(TCA)
$00
Timer counter B
(TCB)
$00
Timer counter C
(TCC)
$00
Timer counter D
(TCD)
$00
Timer write register B
(TWBU, TWBL)
$X0
Timer write register C
(TWCU, TWCL) $X0
Timer write register D
(TWDU, TWDL) $X0
Octal counter
000
Comparator Compare control register (CCR)
0000
Refer to description of voltage comparator
Compare enable register (CER)
0000
Refer to description of voltage comparator
Bit register
Low speed on flag
(LSON)
0
Refer to description of operating modes
Watchdog timer on flag
(WDON)
0
Refer to description of timer C
Direct transfer on flag
(DTON)
0
Refer to description of operating modes
Input capture status flag
(ICSF)
0
Refer to description of timer D
Input capture error flag
(ICEF)
0
Refer to description of timer D
Others
Miscellaneous register
(MIS)
0000
Refer to description of operating modes,
and oscillator circuit
System clock select
register 1 bits 2–0
(SSR12–
SSR10)
000
Refer to description of operating modes,
and oscillator circuit
System clock select
register 2
(SSR2)
0000
Bank register
(V)
- - - 0
Refer to description of RAM memory map
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.
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