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参数资料
| 型号： | PIC16F84A-20/SO |
| 厂商： | Microchip Technology |
| 文件页数： | 2/81页 |
| 文件大小： | 0K |
| 描述： | IC MCU FLASH 1KX14 EE 18SOIC |
| 产品培训模块： | Asynchronous Stimulus 8-bit PIC® Microcontroller Portfolio |
| 标准包装： | 42 |
| 系列： | PIC® 16F |
| 核心处理器： | PIC |
| 芯体尺寸： | 8-位 |
| 速度： | 20MHz |
| 外围设备： | POR，WDT |
| 输入/输出数： | 13 |
| 程序存储器容量： | 1.75KB（1K x 14） |
| 程序存储器类型： | 闪存 |
| EEPROM 大小： | 64 x 8 |
| RAM 容量： | 68 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 4 V ~ 5.5 V |
| 振荡器型： | 外部 |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 18-SOIC（0.295"，7.50mm 宽） |
| 包装： | 管件 |
| 产品目录页面： | 638 (CN2011-ZH PDF) |
| 配用： | XLT18SO-1-ND - SOCKET TRANSITION 18SOIC 300MIL I3-DB16F84A-ND - BOARD DAUGHTER ICEPIC3 309-1075-ND - ADAPTER 18-SOIC TO 18-SOIC 309-1011-ND - ADAPTER 18-SOIC TO 18-DIP 309-1010-ND - ADAPTER 18-SOIC TO 18-DIP AC164010-ND - MODULE SKT PROMATEII DIP/SOIC |
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PIC16F84A
DS35007B-page 8
2001 Microchip Technology Inc.
2.3.1
STATUS REGISTER
The STATUS register contains the arithmetic status of
the ALU, the RESET status and the bank select bit for
data memory.
As with any register, the STATUS register can be the
destination for any instruction. If the STATUS register is
the destination for an instruction that affects the Z, DC
or C bits, then the write to these three bits is disabled.
These bits are set or cleared according to device logic.
Furthermore, the TO and PD bits are not writable.
Therefore, the result of an instruction with the STATUS
register as destination may be different than intended.
For example, CLRF STATUS will clear the upper three
bits and set the Z bit. This leaves the STATUS register
as 000u u1uu (where u = unchanged).
Only the BCF, BSF, SWAPF and MOVWF instructions
should be used to alter the STATUS register (Table 7-2),
because these instructions do not affect any status bit.
REGISTER 2-1:
STATUS REGISTER (ADDRESS 03h, 83h)
Note 1: The IRP and RP1 bits (STATUS<7:6>)
are not used by the PIC16F84A and
should be programmed as cleared. Use of
these bits as general purpose R/W bits is
NOT recommended, since this may affect
upward compatibility with future products.
2: The C and DC bits operate as a borrow
and digit borrow out bit, respectively, in
subtraction. See the SUBLW and SUBWF
instructions for examples.
3: When
the
STATUS
register
is
the
destination for an instruction that affects
the Z, DC or C bits, then the write to these
three bits is disabled. The specified bit(s)
will be updated according to device logic
R/W-0
R-1
R/W-x
IRP
RP1
RP0
TO
PD
ZDC
C
bit 7
bit 0
bit 7-6
Unimplemented: Maintain as ‘0’
bit 5
RP0: Register Bank Select bits (used for direct addressing)
01
= Bank 1 (80h - FFh)
00
= Bank 0 (00h - 7Fh)
bit 4
TO: Time-out bit
1
= After power-up, CLRWDT instruction, or SLEEP instruction
0
= A WDT time-out occurred
bit 3
PD: Power-down bit
1
= After power-up or by the CLRWDT instruction
0
= By execution of the SLEEP instruction
bit 2
Z: Zero bit
1
= The result of an arithmetic or logic operation is zero
0
= The result of an arithmetic or logic operation is not zero
bit 1
DC: Digit carry/borrow bit (ADDWF, ADDLW,SUBLW,SUBWF instructions) (for borrow, the polarity
is reversed)
1
= A carry-out from the 4th low order bit of the result occurred
0
= No carry-out from the 4th low order bit of the result
bit 0
C: Carry/borrow bit (ADDWF, ADDLW,SUBLW,SUBWF instructions) (for borrow, the polarity is
reversed)
1
= A carry-out from the Most Significant bit of the result occurred
0
= No carry-out from the Most Significant bit of the result occurred
Note:
A subtraction is executed by adding the two’s complement of the second operand.
For rotate (RRF, RLF) instructions, this bit is loaded with either the high or low order
bit of the source register.
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
- n = Value at POR
’1’ = Bit is set
’0’ = Bit is cleared
x = Bit is unknown
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PIC16F84AT-04/SO | 功能描述:8位微控制器 -MCU 1.75KB 68 RAM 13 I/O 4MHz SOIC18 RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| PIC16F84AT-04/SS | 功能描述:8位微控制器 -MCU 1.75KB 68 RAM 13 I/O 4MHz SSOP20 RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| PIC16F84AT-04E/SO | 功能描述:8位微控制器 -MCU 1.75KB 68 RAM 13 I/O RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| PIC16F84AT-04E/SS | 功能描述:8位微控制器 -MCU 1.75KB 68 RAM 13 I/O RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| PIC16F84AT-04I/SO | 功能描述:8位微控制器 -MCU 1.75KB 68 RAM 13 I/O 4MHz Ind Temp SOIC18 RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
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