- 您现在的位置：买卖IC网 > PDF目录67774 > M38C29FFAHP 8-BIT, FLASH, 5 MHz, MICROCONTROLLER, PQFP64 PDF资料下载
参数资料
| 型号： | M38C29FFAHP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, FLASH, 5 MHz, MICROCONTROLLER, PQFP64 |
| 封装： | 10 X 10 MM, 0.50 MM PITCH, PLASTIC, LQFP-64 |
| 文件页数： | 9/104页 |
| 文件大小： | 1327K |
| 代理商： | M38C29FFAHP |
第1页第2页第3页第4页第5页第6页第7页第8页当前第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页
Rev.2.00
May 28, 2004
page 10 of 100
38C2 Group (A Version)
[Processor Status Register (PS)]
The processor status register is an 8-bit register consisting of 5 flags
which indicate the status of the processor after an arithmetic opera-
tion and 3 flags which decide MCU operation. Branch operations
can be performed by testing the Carry (C) flag , Zero (Z) flag, Over-
flow (V) flag, or the Negative (N) flag. In decimal mode, the Z, V, N
flags are not valid.
Bit 0: Carry flag (C)
The C flag contains a carry or borrow generated by the arithmetic
logic unit (ALU) immediately after an arithmetic operation. It can
also be changed by a shift or rotate instruction.
Bit 1: Zero flag (Z)
The Z flag is set to “1” if the result of an immediate arithmetic
operation or a data transfer is “0”, and set to “0” if the result is
anything other than “ 0” .
Bit 2: Interrupt disable flag (I)
The I flag disables all interrupts except for the interrupt generated
by the BRK instruction.
Interrupts are disabled when the I flag is “ 1” .
Bit 3: Decimal mode flag (D)
The D flag determines whether additions and subtractions are ex-
ecuted in binary or decimal. Binary arithmetic is executed when
this flag is “ 0” ; decimal arithmetic is executed when it is
“ 1” .
Decimal correction is automatic in decimal mode. Only the ADC
and SBC instructions can be used for decimal arithmetic.
Bit 4: Break flag (B)
The B flag is used to indicate that the current interrupt was gener-
ated by the BRK instruction. When the BRK instruction is gener-
ated, the B flag is set to “1” automatically. When the other inter-
rupts are generated, the B flag is set to “0”, and the processor
status register is pushed onto the stack.
Bit 5: Index X mode flag (T)
When the T flag is “0”, arithmetic operations are performed be-
tween accumulator and memory. When the T flag is “1”, direct arith-
metic operations and direct data transfers are enabled between
memory locations.
Bit 6: Overflow flag (V)
The V flag is used during the addition or subtraction of one byte of
signed data. It is set if the result exceeds +127 to -128. When the
BIT instruction is executed, bit 6 of the memory location operated
on by the BIT instruction is stored in the overflow flag.
Bit 7: Negative flag (N)
The N flag is set to “1” if the result of an arithmetic operation or
data transfer is negative. When the BIT instruction is executed, bit
7 of the memory location operated on by the BIT instruction is stored
in the negative flag.
Table 5 Set and clear instructions of each bit of processor status register
Set instruction
Clear instruction
C flag
SEC
CLC
Z flag
–
I flag
SEI
CLI
D flag
SED
CLD
B flag
–
T flag
SET
CLT
V flag
–
CLV
N flag
–
相关PDF资料 |
PDF描述 |
|---|---|
| M38C29FFAFP | 8-BIT, FLASH, 5 MHz, MICROCONTROLLER, PQFP64 |
| M38K29F8LHP | 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP64 |
| M38K27M4L-XXXFP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP64 |
| M38K29RFS | 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, CPGA100 |
| M41ST85YMH6 | 1 TIMER(S), REAL TIME CLOCK, PDSO28 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M38C29FFAHP#U0 | 制造商:Renesas Electronics Corporation 功能描述:MCU 8BIT 740 CISC 60KB FLASH 5V 64LQFP - Trays |
| M38C29FFFP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38C29FFHP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38C29MC-XXXFP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38C29MC-XXXHP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
发布紧急采购，3分钟左右您将得到回复。