參數(shù)資料
型號(hào)： PIC16F83
廠商： Microchip Technology Inc.
英文描述： 8-Bit CMOS Flash/EEPROM Microcontollrs(每個(gè)I/O口有20mA吸收,25mA驅(qū)動(dòng)，64字節(jié)數(shù)據(jù)EEPROM，2.0V的微控制器)
中文描述： 8位CMOS閃存/ EEPROM Microcontollrs（每個(gè)的I / O口有20mA的吸收，25mA電流驅(qū)動(dòng)，64字節(jié)數(shù)據(jù)的EEPROM，2.0伏的微控制器）
文件頁(yè)數(shù)： 33/120頁(yè)
文件大?。?/td> 764K
代理商： PIC16F83
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1996 Microchip Technology Inc.
DS30430A-page 33
PIC16F8X
7.0
DATA EEPROM MEMORY
The EEPROM data memory is readable and writable
during normal operation (full V
is not directly mapped in the register file space. Instead
it is indirectly addressed through the Special Function
Registers. There are four SFRs used to read and write
this memory. These registers are:
EECON1
EECON2
EEDATA
EEADR
EEDATA holds the 8-bit data for read/write, and
EEADR holds the address of the EEPROM location
being accessed. PIC16F8X devices have 64 bytes of
data EEPROM with an address range from 0h to 3Fh.
The EEPROM data memory allows byte read and write.
A byte write automatically erases the location and
writes the new data (erase before write). The EEPROM
data memory is rated for high erase/write cycles. The
write time is controlled by an on-chip timer. The
write-time will vary with voltage and temperature as
well as from chip to chip. Please refer to AC
specifications for exact limits.
DD
range). This memory
When the device is code protected, the CPU may
continue to read and write the data EEPROM memory.
The device programmer can no longer access
this memory.
7.1
EEADR
The EEADR register can address up to a maximum of
256 bytes of data EEPROM. Only the first 64 bytes of
data EEPROM are implemented.
The upper two bits are address decoded. This means
that these two bits must always be '0' to ensure that the
address is in the 64 byte memory space.
FIGURE 7-1:
EECON1 REGISTER (ADDRESS 88h)
U
—
U
—
U
—
R/W-0
EEIF
R/W-x
WRERR
R/W-0
WREN
R/S-0
WR
R/S-x
RD
R
W = Writable bit
S
= Settable bit
U
= Unimplemented bit,
read as ‘0’
- n = Value at POR reset
= Readable bit
bit7
bit0
bit 7:5
bit 4
Unimplemented:
EEIF
: EEPROM Write Operation Interrupt Flag bit
1 = The write operation completed (must be cleared in software)
0 = The write operation is not complete or has not been started
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
WREN
: EEPROM Write Enable bit
1 = Allows write cycles
0 = Inhibits write to the data EEPROM
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 data EEPROM is complete
RD
: Read Control bit
1 = Initiates an EEPROM read (read takes one cycle. RD is cleared in hardware. The RD bit can only be
set (not cleared) in software).
0 = Does not initiate an EEPROM read
Read as '0'
bit 3
bit 2
bit 1
bit 0
Thi d
t
t d
ith F
M k
4 0 4
相關(guān)PDF資料
PDF描述
PIC16F84 18-pin Flash/EEPROM 8-Bit Microcontrollers
PIC16F85 18/20 Pin, 8-Bit CMOS FLASH Microcontroller with Comparators and A/D Product Brief
PIC16F86 18/20 Pin, 8-Bit CMOS FLASH Microcontroller with Comparators and A/D Product Brief
PIC16F873A 28/40-pin Enhanced FLASH Microcontrollers
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PIC16F83-04/P 功能描述:8位微控制器 -MCU .875KB 36 RAM 13 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC16F83-04/P 制造商:Microchip Technology Inc 功能描述:IC 8-BIT FLASH MCU
PIC16F83-04/SO 功能描述:8位微控制器 -MCU .875KB 36 RAM 13 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC16F83-04I/P 功能描述:8位微控制器 -MCU .875KB 36 RAM 13 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC16F83-04I/SO 功能描述:8位微控制器 -MCU .875KB 36 RAM 13 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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