参数资料
型号: PIC12LF1840-I/MF
厂商: Microchip Technology
文件页数: 12/122页
文件大小: 0K
描述: MCU 7KB FLASH 256B RAM 8-DFN
产品培训模块: 8-bit PIC® Microcontroller Portfolio
标准包装: 120
系列: PIC® XLP™ 12F
核心处理器: PIC
芯体尺寸: 8-位
速度: 32MHz
连通性: I²C,LIN,SPI,UART/USART
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 5
程序存储器容量: 7KB(4K x 14)
程序存储器类型: 闪存
EEPROM 大小: 256 x 8
RAM 容量: 256 x 8
电压 - 电源 (Vcc/Vdd): 1.8 V ~ 3.6 V
数据转换器: A/D 4x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 8-VDFN 裸露焊盘
包装: 管件
2011 Microchip Technology Inc.
Preliminary
DS41441B-page 109
PIC12(L)F1840
REGISTER 11-5:
EECON1: EEPROM CONTROL 1 REGISTER
R/W-0/0
R/W/HC-0/0
R/W-x/q
R/W-0/0
R/S/HC-0/0
EEPGD
CFGS
LWLO
FREE
WRERR
WREN
WR
RD
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
S = Bit can only be set
x = Bit is unknown
-n/n = Value at POR and BOR/Value at all other Resets
‘1’ = Bit is set
‘0’ = Bit is cleared
HC = Bit is cleared by hardware
bit 7
EEPGD:
Flash Program/Data EEPROM Memory Select bit
1
= Accesses program space Flash memory
0
= Accesses data EEPROM memory
bit 6
CFGS:
Flash Program/Data EEPROM or Configuration Select bit
1
= Accesses Configuration, User ID and Device ID Registers
0
= Accesses Flash Program or data EEPROM Memory
bit 5
LWLO:
Load Write Latches Only bit
If CFGS = 1 (Configuration space) OR CFGS = 0 and EEPGD = 1 (program Flash):
1
= The next WR command does not initiate a write; only the program memory latches are
updated.
0
= The next WR command writes a value from EEDATH:EEDATL into program memory latches
and initiates a write of all the data stored in the program memory latches.
If CFGS = 0 and EEPGD = 0: (Accessing data EEPROM)
LWLO is ignored. The next WR command initiates a write to the data EEPROM.
bit 4
FREE:
Program Flash Erase Enable bit
If CFGS = 1 (Configuration space) OR CFGS = 0 and EEPGD = 1 (program Flash):
1
= Performs an erase operation on the next WR command (cleared by hardware after comple-
tion of erase).
0
= Performs a write operation on the next WR command.
If EEPGD = 0 and CFGS = 0: (Accessing data EEPROM)
FREE is ignored. The next WR command will initiate both a erase cycle and a write cycle.
bit 3
WRERR:
EEPROM Error Flag bit
1
= Condition indicates an improper program or erase sequence attempt or termination (bit is set
automatically on any set attempt (write ‘1’) of the WR bit).
0
= The program or erase operation completed normally.
bit 2
WREN:
Program/Erase Enable bit
1
= Allows program/erase cycles
0
= Inhibits programming/erasing of program Flash and data EEPROM
bit 1
WR:
Write Control bit
1
= Initiates a program Flash or data EEPROM program/erase operation.
The operation is self-timed and the bit is cleared by hardware once operation is complete.
The WR bit can only be set (not cleared) in software.
0
= Program/erase operation to the Flash or data EEPROM is complete and inactive.
bit 0
RD:
Read Control bit
1
= Initiates a program Flash or data 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 a program Flash or data EEPROM data read.
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