- 您现在的位置：买卖IC网 > PDF目录11455 > PIC16F870-E/SP (Microchip Technology)IC MCU CMOS 20MHZ 2K FLASH 28DIP PDF资料下载
参数资料
| 型号： | PIC16F870-E/SP |
| 厂商： | Microchip Technology |
| 文件页数： | 68/143页 |
| 文件大小： | 0K |
| 描述： | IC MCU CMOS 20MHZ 2K FLASH 28DIP |
| 产品培训模块： | Asynchronous Stimulus |
| 标准包装： | 15 |
| 系列： | PIC® 16F |
| 核心处理器： | PIC |
| 芯体尺寸： | 8-位 |
| 速度： | 20MHz |
| 连通性： | UART/USART |
| 外围设备： | 欠压检测/复位，POR，PWM，WDT |
| 输入/输出数： | 22 |
| 程序存储器容量： | 3.5KB（2K x 14） |
| 程序存储器类型： | 闪存 |
| EEPROM 大小： | 64 x 8 |
| RAM 容量： | 128 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 4 V ~ 5.5 V |
| 数据转换器： | A/D 5x10b |
| 振荡器型： | 外部 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 28-DIP（0.300"，7.62mm） |
| 包装： | 管件 |
| 配用： | I3-DB16F871-ND - BOARD DAUGHTER ICEPIC3 |
第1页第2页第3页第4页第5页第6页第7页第8页第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页当前第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页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页第115页第116页第117页第118页第119页第120页第121页第122页第123页第124页第125页第126页第127页第128页第129页第130页第131页第132页第133页第134页第135页第136页第137页第138页第139页第140页第141页第142页第143页
PIC16F870/871
DS30569B-page 28
2003 Microchip Technology Inc.
Write operations have two control bits, WR and WREN,
and two status bits, WRERR and EEIF. The WREN bit
is used to enable or disable the write operation. When
WREN is clear, the write operation will be disabled.
Therefore, the WREN bit must be set before executing
a write operation. The WR bit is used to initiate the write
operation. It also is automatically cleared at the end of
the write operation. The interrupt flag EEIF is used to
determine when the memory write completes. This flag
must be cleared in software before setting the WR bit.
For EEPROM data memory, once the WREN bit and
the WR bit have been set, the desired memory address
in EEADR will be erased, followed by a write of the data
in EEDATA. This operation takes place in parallel with
the microcontroller continuing to execute normally.
When the write is complete, the EEIF flag bit will be set.
For program memory, once the WREN bit and the WR
bit have been set, the microcontroller will cease to exe-
cute instructions. The desired memory location pointed
to by EEADRH:EEADR will be erased. Then, the data
value in EEDATH:EEDATA will be programmed. When
complete, the EEIF flag bit will be set and the
microcontroller will continue to execute code.
The WRERR bit is used to indicate when the
PIC16F870/871 devices have been reset during a write
operation. WRERR should be cleared after Power-on
Reset. Thereafter, it should be checked on any other
RESET. The WRERR bit is set when a write operation
is interrupted by a MCLR Reset, or a WDT Time-out
Reset, during normal operation. In these situations, fol-
lowing a RESET, the user should check the WRERR bit
and rewrite the memory location, if set. The contents of
the data registers, address registers and EEPGD bit
are not affected by either MCLR Reset, or WDT
Time-out Reset, during normal operation.
REGISTER 3-1:
EECON1 REGISTER (ADDRESS: 18Ch)
R/W-x
U-0
R/W-x
R/W-0
R/S-0
EEPGD
—
WRERR
WREN
WR
RD
bit 7
bit 0
bit 7
EEPGD: Program/Data EEPROM Select bit
1
= Accesses program memory
0
= Accesses data memory
(This bit cannot be changed while a read or write operation is in progress.)
bit 6-4
Unimplemented: Read as '0'
bit 3
WRERR: EEPROM Error Flag bit
1
= A write operation is prematurely terminated (any MCLR Reset or any WDT Reset during
normal operation)
0
= The write operation completed
bit 2
WREN: EEPROM Write Enable bit
1
= Allows write cycles
0
= Inhibits write to the EEPROM
bit 1
WR: Write Control bit
1
= Initiates a write cycle. (The bit is cleared by hardware once write is complete. The WR bit
can only be set (not cleared) in software.)
0
= Write cycle to the EEPROM is complete
bit 0
RD: Read Control bit
1
= Initiates an EEPROM read. (RD is cleared in hardware. The RD bit can only be set (not
cleared) in software.)
0
= Does not initiate an EEPROM read
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
相关PDF资料 |
PDF描述 |
|---|---|
| PIC16F870-E/SO | IC MCU CMOS 20MHZ 2K FLSH 28SOIC |
| PIC16LCE624-04/P | IC MCU OTP 1KX14 EE 18DIP |
| VI-BNP-IX-S | CONVERTER MOD DC/DC 13.8V 75W |
| PIC16LC711-04E/SS | IC MCU OTP 1KX14 A/D 20SSOP |
| PIC16CE625-04I/SS | IC MCU OTP 2KX14 EE COMP 20SSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PIC16F870-I/SO | 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 22 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 |
| PIC16F870-I/SO | 制造商:Microchip Technology Inc 功能描述:8BIT FLASH MCU SMD 16F870 SOIC28 |
| PIC16F870-I/SP | 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 22 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 |
| PIC16F870-I/SP | 制造商:Microchip Technology Inc 功能描述:IC 8BIT FLASH MCU 16F870 SDIL28 |
| PIC16F870-I/SS | 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 22 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 |
发布紧急采购，3分钟左右您将得到回复。