PIC16F631-I/P Microchip Technology Inc., PIC16F631-I/P Datasheet - Page 123

• Manufacturer Part Number: PIC16F631-I/P
• Description: MCU, 8-Bit, 1KW Flash, 64 RAM, 18 I/O, PDIP-20
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F631-I/P

• Comparators: 2
• Cpu Speed: 5 MIPS
• Eeprom Memory: 128 Bytes
• Input Output: 18
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 20-pin PDIP
• Programmable Memory: 1.75K Bytes
• Ram Size: 64 Bytes
• Speed: 20 MHz
• Timers: 1-8-bit, 1-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

REGISTER 10-5:
© 2007 Microchip Technology Inc.
bit 7
Legend:
S = Bit can only be set
R = Readable bit
-n = Value at POR
bit 7
bit 6-4
bit 3
bit 2
bit 1
bit 0
Note 1:
EEPGD
R/W-x
(1)
PIC16F685/PIC16F689/PIC16F690 only.
EEPGD: Program/Data EEPROM Select bit
1 = Accesses program memory
0 = Accesses data memory
Unimplemented: Read as ‘0’
WRERR: EEPROM Error Flag bit
1 = A write operation is prematurely terminated (any MCLR Reset, any WDT Reset during
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
EEPGD = 1:
This bit is ignored
EEPGD = 0:
1 = Initiates a write cycle (The bit is cleared by hardware once write is complete. The WR bit can only
0 = Write cycle to the data EEPROM is complete
RD: Read Control bit
1 = Initiates a memory read (the RD is cleared in hardware and can only be set, not cleared, in
0 = Does not initiate a memory read
normal operation or BOR Reset)
be set, not cleared, in software.)
software.)
U-0
—
EECON1: EEPROM CONTROL REGISTER
W = Writable bit
‘1’ = Bit is set
PIC16F631/677/685/687/689/690
U-0
—
U-0
—
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
(1)
WRERR
R/W-x
WREN
R/W-0
x = Bit is unknown
R/S-0
WR
DS41262D-page 121
R/S-0
RD
bit 0