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參數(shù)資料
| 型號(hào)： | M38004M3-XXXSS |
| 廠商： | Mitsubishi Electric Corporation |
| 元件分類： | DC/DC變換器 |
| 英文描述： | 1 watt dc-dc converters |
| 中文描述： | 1瓦的DC - DC轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 24/173頁(yè) |
| 文件大?。?/td> | 4203K |
| 代理商： | M38004M3-XXXSS |
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1-10
HARDWARE
3800 GROUP USER’S MANUAL
FUNCTIONAL DESCRIPTION
Central Processing Unit (CPU)
The 3800 group uses the standard 740 family instruction set. Re-
fer to the table of 740 family addressing modes and machine in-
structions or the SERIES 740 <Software> User’s Manual for de-
tails on the instruction set.
Machine-resident 740 family instructions are as follows:
The FST and SLW instruction cannot be used.
The STP, WIT, MUL, and DIV instruction can be used.
The central processing unit (CPU) has the six registers.
Accumulator (A)
The accumulator is an 8-bit register. Data operations such as data
transfer, etc., are executed mainly through the accumulator.
Index register X (X), Index register Y (Y)
Both index register X and index register Y are 8-bit registers. In
the index addressing modes, the value of the OPERAND is added
to the contents of register X or register Y and specifies the real ad-
dress.
When the T flag in the processor status register is set to “1”, the
value contained in index register X becomes the address for the
second OPERAND.
Stack pointer (S)
The stack pointer is an 8-bit register used during subroutine calls
and interrupts. The stack is used to store the current address data
and processor status when branching to subroutines or interrupt
routines.
The lower eight bits of the stack address are determined by the
contents of the stack pointer. The upper eight bits of the stack ad-
dress are determined by the Stack Page Selection Bit. If the Stack
Page Selection Bit is “0”, then the RAM in the zero page is used
as the stack area. If the Stack Page Selection Bit is “1”, then RAM
in page 1 is used as the stack area.
The Stack Page Selection Bit is located in the SFR area in the
zero page. Note that the initial value of the Stack Page Selection
Bit varies with each microcomputer type. Also some microcom-
puter types have no Stack Page Selection Bit and the upper eight
bits of the stack address are fixed.
The operations of pushing register contents onto the stack and
popping them from the stack are shown in Fig. 8.
Program counter (PC)
The program counter is a 16-bit counter consisting of two 8-bit
registers PC
H
and PC
L
. It is used to indicate the address of the
next instruction to be executed.
Fig. 7 740 Family CPU register structure
FUNCTIONAL DESCRIPTION
X
Y
S
PC
L
C
N V T B D I Z
A
b0
b0
b7
b7
b15
b0
b7
b0
b7
b0
b7
b0
b7
Accumulator
Index Register X
Index Register Y
Stack Pointer
Program Counter
Processor Status Register (PS)
Carry Flag
Zero Flag
Interrupt Disable Flag
Decimal Mode Flag
Break Flag
Index X Mode Flag
Overflow Flag
Negative Flag
PC
H
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M38005M1-XXXSP | 4.25 Gbps Cable And PC Board Equalizer 16-QFN -40 to 85 |
| M38005M1-XXXSS | 4.25 Gbps Cable And PC Board Equalizer 16-QFN -40 to 85 |
| M38005M2-XXXFP | 1 watt dc-dc converters |
| M38005M2-XXXFS | 1 watt dc-dc converters |
| M38005M2-XXXHP | 4 channel 18 bit Transceiver 1 - 2.5 Gbps/Ch 289-BGA |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M38004M4-DXXXSP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 38000 SERIES |
| M38004M4-XXXFP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:8-BIT SINGLE-CHIP MICROCOMPUTER |
| M38004M4-XXXFS | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:8-BIT SINGLE-CHIP MICROCOMPUTER |
| M38004M4-XXXHP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:8-BIT SINGLE-CHIP MICROCOMPUTER |
| M38004M4-XXXSP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:8-BIT SINGLE-CHIP MICROCOMPUTER |
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