參數(shù)資料
型號: HD4046212R
廠商: Hitachi,Ltd.
英文描述: AS Microcomputer Incorporating a DTMF Generator Circuit(微計(jì)算機(jī)帶雙音多頻發(fā)生器電路)
中文描述: 由于微機(jī)安裝有雙音多頻發(fā)電機(jī)斷路器(微計(jì)算機(jī)帶雙音多頻發(fā)生器電路)
文件頁數(shù): 19/155頁
文件大?。?/td> 549K
代理商: HD4046212R
HD404629R Series
19
Table 1 Initial Values After MCU Reset
Item
Abbr.
Initial
Value
Contents
Program
counter
(PC)
$0000
Indicates program execution point from start
address of ROM area
Status flag
(ST)
1
Enables conditional branching
Stack pointer
(SP)
$3FF
Stack level 0
Interrupt
Interrupt enable flag
(IE)
0
Inhibits all interrupts
flags/mask
Interrupt request flag
(IF)
0
Indicates there is no interrupt request
Interrupt mask
(IM)
1
Prevents (masks) interrupt requests
I/O
Port data register
(PDR)
All bits 1
Enables output at level 1
Data control register
(DCD0,
DCD1)
All bits 0
Turns output buffer off (to high impedance)
(DCD2)
- - 00
(DCR0,
–DCR7)
All bits 0
Port mode register A
(PMRA)
- - 00
Refer to description of port mode register A
Port mode register B
(PMRB)
0000
Refer to description of port mode register B
Port mode register C
bits 3, 1, 0
(PMRC3,
PMRC1,
PMRC0)
000
Refer to description of port mode register C
Detection edge select
register 1
(ESR1)
0000
Disables edge detection
Detection edge select
register 2
(ESR2)
0000
Disables edge detection
Timer/
Timer mode register A
(TMA)
0000
Refer to description of timer mode register A
counters,
Timer mode register B1
(TMB1)
0000
Refer to description of timer mode register B1
serial
Timer mode register B2
(TMB2)
- - 00
Refer to description of timer mode register B2
interface
Timer mode register C1
(TMC1)
0000
Refer to description of timer mode register C1
Timer mode register C2
(TMC2)
- 000
Refer to description of timer mode register C2
Timer mode register D1
(TMD1)
0000
Refer to description of timer mode register D1
Timer mode register D2
(TMD2)
0000
Refer to description of timer mode register D2
Serial mode register A
(SMRA)
0000
Refer to description of serial mode register A
Serial mode register B
(SMRB)
- - X0
Refer to description of serial mode register B
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
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HD4046212RFS 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD4046212RH 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:AS Microcomputer Incorporating a DTMF Generator Circuit
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HD4046212TF 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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