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参数资料
| 型号： | M38C29MCA-XXXFP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 5 MHz, MICROCONTROLLER, PQFP64 |
| 封装： | 14 X 14 MM, 0.80 MM PITCH, PLASTIC, LQFP-64 |
| 文件页数： | 2/102页 |
| 文件大小： | 1567K |
| 代理商： | M38C29MCA-XXXFP |
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10
38C2 Group (A Version)
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
PRELIMINAR
Y
Notice:
This
is not
a final
specification.
Some
parametric
limits
are
subject
to change.
[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
–
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| M38C29RLFS | 功能描述:EMULATOR MCU FOR A-VERSION 38C2 RoHS:否 类别:编程器，开发系统 >> 内电路编程器、仿真器以及调试器 系列:- 产品变化通告:Development Systems Discontinuation 19/Jul/2010 标准包装:1 系列:* 类型:* 适用于相关产品:* 所含物品:* |
| M38C29T-64FPD | 功能描述:DEV 100-PIN RFS/MCU TO 64-PIN 0. RoHS:否 类别:编程器，开发系统 >> 配件 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program RoHS指令信息:IButton RoHS Compliance Plan 标准包装:1 系列:- 附件类型:USB 至 1-Wire? RJ11 适配器 适用于相关产品:1-Wire? 设备 产品目录页面:1429 (CN2011-ZH PDF) |
| M38C29T-64LCA | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:Converter from 100-pin RFS Type Emulator MCU to 64-pin 0.8mm-pitch QFP (for 38C1, 38C2, 38K0 and 38K2 Group of 38000 Series) |
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