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参数资料
| 型号： | 2SC458LGB |
| 元件分类： | 小信号晶体管 |
| 英文描述： | 100 mA, 30 V, NPN, Si, SMALL SIGNAL TRANSISTOR, TO-92 |
| 封装： | TO-92(1), 3 PIN |
| 文件页数： | 2/13页 |
| 文件大小： | 189K |
| 代理商： | 2SC458LGB |
38K2 Group
Rev.3.00
Oct 15, 2006
page 8 of 147
REJ03B0193-0300
[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
operation and 3 flags which decide MCU operation. Branch opera-
tions can be performed by testing the Carry (C) flag , Zero (Z) flag,
Overflow (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 if the result of an immediate arithmetic operation
or a data transfer is “0”, and cleared 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
executed 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
Bit 4: Break flag (B)
The B flag is used to indicate that the current interrupt was
generated by the BRK instruction. The BRK flag in the processor
status register is always “0”. When the BRK instruction is used to
generate an interrupt, the processor status register is pushed
onto the stack with the break flag set to “1”.
Bit 5: Index X mode flag (T)
When the T flag is “0”, arithmetic operations are performed
between accumulator and memory. When the T flag is “1”, direct
arithmetic 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 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 4 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 |
|---|---|
| 2SC459 | 制造商:Distributed By MCM 功能描述:SUB ONLY TRANSISTOR TO-9230V .1A .2W ECB |
| 2SC4591XM(TL-E) | 制造商:Renesas Electronics 功能描述:Cut Tape |
| 2SC460 | 制造商:Panasonic Industrial Company 功能描述:TRANSISTOR |
| 2SC4604(F) | 制造商:Toshiba 功能描述:NPN 制造商:Toshiba 功能描述:NPN Bulk |
| 2SC4604,F(J | 功能描述:TRANS NPN 3A 50V TO226-3 制造商:toshiba semiconductor and storage 系列:- 包装:散装 零件状态:停產 晶体管类型:NPN 电流 - 集电极（Ic）（最大值）:3A 电压 - 集射极击穿（最大值）:50V 不同?Ib，Ic 时的?Vce 饱和值（最大值）:500mV @ 75mA，1.5A 电流 - 集电极截止（最大值）:100nA（ICBO） 不同?Ic，Vce?时的 DC 电流增益（hFE）（最小值）:120 @ 100mA，2V 功率 - 最大值:900mW 频率 - 跃迁:100MHz 工作温度:150°C（TJ） 安装类型:通孔 封装/外壳:TO-226-3，TO-92-3 长体 供应商器件封装:TO-92MOD 标准包装:1 |
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