參數資料
型號: HD404368
廠商: Hitachi,Ltd.
英文描述: 4-bit HMCS400-Series microcomputer(4位單片微計算機)
中文描述: 4位HMCS400系列微機(4位單片微計算機)
文件頁數: 17/115頁
文件大?。?/td> 710K
代理商: HD404368
HD404369 Series
17
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
flags/mask
Interrupt enable flag
(IE)
0
Inhibits all interrupts
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-
DCD2)
All bits 0
Turns output buffer off (to high impedance)
(DCD3)
- - 00
(DCR0–
DCR6,
DCR8,
DCR9)
All bits 0
(DCR7)
- 000
Port mode register A
(PMRA)
0000
Refer to description of port mode register A
Port mode register B
bits 2–0
(PMRB2–
PMRB0)
000
Refer to description of port mode register B
Port mode register C
(PMRC)
00 - 0
Refer to description of port mode register C
Timer/count-
ers, serial
interface
Timer mode register A
(TMA)
0000
Refer to description of timer mode register A
Timer mode register B1 (TMB1)
0000
Refer to description of timer mode register B1
Timer mode register B2 (TMB2)
- 000
Refer to description of timer mode register B2
Timer mode register C
(TMC)
0000
Refer to description of timer mode register C
Serial mode register
(SMR)
0000
Refer to description of serial mode register
Prescaler S
(PSS)
$000
Prescaler W
(PSW)
$00
Timer counter A
(TCA)
$00
Timer counter B
(TCB)
$00
Timer counter C
(TCC)
$00
Timer write register B
(TWBU,
TWBL)
$X0
Timer write register C
(TWCU,
TWCL)
$X0
Octal counter
000
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相關代理商/技術參數
參數描述
HD404368F 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-bit HMCS400-Series microcomputer
HD404368H 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:microcomputer has an A/D converter
HD404368S 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-bit HMCS400-Series microcomputer
HD404369 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:microcomputer has an A/D converter
HD404369F 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-bit HMCS400-Series microcomputer