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参数资料
型号： PIC14000-04I/SO
厂商： Microchip Technology
文件页数： 63/153页
文件大小： 0K
描述： IC MCU OTP 4KX14 A/D 28SOIC
产品培训模块： Asynchronous Stimulus
8-bit PIC® Microcontroller Portfolio
标准包装： 27
系列： PIC® 14
核心处理器： PIC
芯体尺寸： 8-位
速度： 4MHz
连通性： I²C
外围设备： POR，温度传感器，WDT
输入/输出数： 20
程序存储器容量： 7KB（4K x 14）
程序存储器类型： OTP
RAM 容量： 192 x 8
电压 - 电源 (Vcc/Vdd)： 2.7 V ~ 6 V
数据转换器： 斜率 A/D
振荡器型： 内部
工作温度： -40°C ~ 85°C
封装/外壳： 28-SOIC（0.295"，7.50mm 宽）
包装： 管件
配用： ISPICR1-ND - ADAPTER IN-CIRCUIT PROGRAMMING
309-1073-ND - ADAPTER 28-SOIC TO 28-SOIC
309-1024-ND - ADAPTER 28-SOIC TO 28-DIP
309-1023-ND - ADAPTER 28-SOIC TO 28-DIP
1996 Microchip Technology Inc.
Preliminary
DS40122B-page 17
PIC14000
4.2.2.1
STATUS REGISTER
The STATUS register, shown in Figure 4-3, contains
the arithmetic status of the ALU, the RESET status and
the bank select bits for data memory.
The STATUS register can be the destination for any
instruction, as with any other register. 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 the
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).
It is recommended, therefore, that only BCF, BSF,
SWAPF
and MOVWF instructions are used to alter the
STATUS register because these instructions do not
affect the Z, C or DC bits from the STATUS register. For
other instructions, not affecting any status bits, see the
“Instruction Set Summary.”
Note 1: The IRP and RP1 bits (STATUS<7:6>) are
not used by the PIC14000 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.
Note 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.
FIGURE 4-3:
STATUS REGISTER
83h
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
STATUS
IRP
RP1
RP0
TO
PD
Z
DC
C
Read/Write
R/W
R
R/W
POR value FFh
0
011
X
Bit
Name
Function
B7
IRP
Not used. This bit should be programmed as ‘0’.
Use of this bit as a general purpose read/write bit is not recommended, since this may
affect upward compatibility with future products.
B6
RP1
Not used. This bit should be programmed as ‘0’.
Use of this bit as a general purpose read/write bit is not recommended, since this may
affect upward compatibility with future products.
B5
RP0
Register page select for direct addressing.
1 = Bank1 (80h - FFh)
0 = Bank0 (00h - 7Fh)
Each page is 128 bytes. Only the RP0 bit is used.
B4
TO
Time-out bit.
1 = After power-up and by the CLRWDT and SLEEP instruction.
0 = A watchdog timer time-out has occurred.
B3
PD
Power down bit.
1 = After power-up or by a CLRWDT instruction.
0 = By execution of the SLEEP instruction.
B2
Z
Zero bit.
1 = The result of an arithmetic or logic operation is zero.
0 = The result of an arithmetic or logical operation is not zero.
B1
DC
Digit carry / borrow bit.
For ADDWF and ADDLW instructions.
1 = A carry-out from the 4th low order bit of the result.
0 = No carry-out from the 4th low order bit of the result.
Note: For Borrow, the polarity is reversed.
B0
C
Carry / borrow bit.
For ADDWF and ADDLW instructions.
1 = A carry-out from the most signicant bit of the result occurred. Note that 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.
0 = No carry-out from the most signicant bit of the result.
Note: For Borrow the polarity is reversed.
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相关代理商/技术参数
参数描述
PIC14000-20/SO 功能描述:8位微控制器 -MCU 7KB 192 RAM 20 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
PIC14000-20/SP 功能描述:8位微控制器 -MCU 7KB 192 RAM 20 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
PIC14000-20/SS 功能描述:8位微控制器 -MCU 7KB 192 RAM 20 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
PIC14000-20I/P 制造商:Microchip Technology Inc 功能描述:MCU 8BIT PIC14 RISC 7KB EPROM 5V - Bulk
PIC14000-20I/SO 功能描述:8位微控制器 -MCU 7KB 192 RAM 20 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
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