參數(shù)資料
型號(hào)： HD4074094
廠商： Hitachi,Ltd.
英文描述： 4-Bit Single-Chip Microcomputer(4位單片微計(jì)算機(jī))
中文描述： 4位單片機(jī)（4位單片微計(jì)算機(jī)）
文件頁(yè)數(shù)： 14/101頁(yè)
文件大小： 610K
代理商： HD4074094
HD404054 Series/HD404094 Series
14
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 –
DCD2)
All bits 0 Turns output buffer off (to high impedance)
(DCR0–
DCR4)
All bits 0
Port mode register A
(PMRA)
- - 00
Refer to description of port mode register A
Port mode register B
(PMRB)
- - - 0
Refer to description of port mode register B
Port mode register C
bits 3, 2, 1
(PMRC3,
PMRC2,
PMRC1)
000 -
Refer to description of port mode register C
Detection edge select
register 2
(ESR2)
00 - -
Disables edge detection
Timer/
Timer mode register A
(TMA)
- 000
Refer to description of timer mode register A
counters,
Timer mode register C1 (TMC1)
0000
Refer to description of timer mode register C1
serial
Timer mode register C2 (TMC2)
- 000
Refer to description of timer mode register C2
interface
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 1A (SM1A)
0000
Refer to description of serial mode register 1A
Serial mode register 1B (SM1B)
- - X0
Refer to description of serial mode register 1B
Prescaler S
(PSS)
$000
—
Timer counter A
(TCA)
$00
—
Timer counter C
(TCC)
$00
—
Timer counter D
(TCD)
$00
—
Timer write register C
(TWCU,
TWCL)
$X0
—
Timer write register D
(TWDU,
$X0
—
Octal counter
TWDL)
000
—
Comparator
Compare enable
register
(CER)
0 - 00
Refer to description of voltage comparator
相關(guān)PDF資料
PDF描述
HD404052 4-Bit Single-Chip Microcomputer(4位單片微計(jì)算機(jī))
HD404054 4-Bit Single-Chip Microcomputer(4位單片微計(jì)算機(jī))
HD4074054H 4-Bit Single-Chip Microcomputer(4位單片微計(jì)算機(jī))
HD40A4054 4-Bit Single-Chip Microcomputer(4位單片微計(jì)算機(jī))
HD40A4358 4-bit HMCS400-Series microcomputer
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD4074094H 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD4074094S 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:microcomputer designed to increase program productivity
HD4074224FP01 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD4074224FP02 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:CMOS 4-bit Single-Chip Microcomputers with the same architecture as the HMCS400 Series
HD4074224FP03 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:CMOS 4-bit Single-Chip Microcomputers with the same architecture as the HMCS400 Series
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