PIC18F2331-E/SP Microchip Technology, PIC18F2331-E/SP Datasheet - Page 81

• Manufacturer Part Number: PIC18F2331-E/SP
• Description: IC MCU FLASH 4KX16 28-DIP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F2331-E/SP

• Core Size: 8-Bit
• Program Memory Size: 8KB (4K x 16)
• Core Processor: PIC
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, Power Control PWM, QEI, POR, PWM, WDT
• Number Of I /o: 24
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 28-DIP (0.300", 7.62mm)
• Controller Family/series: PIC18
• No. Of I/o's: 24
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 768Byte
• Cpu Speed: 40MHz
• No. Of Timers: 4
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: I3-DB18F4431 - BOARD DAUGHTER ICEPIC3AC164035 - MODULE SKT FOR 18F2X31 28SOICDVA18XP280 - DEVICE ADAPTER 18F2220 PDIP 28LD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

REGISTER 6-1:
© 2007 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
Note 1:
EEPGD
R/W-x
When a WRERR occurs, the EEPGD and CFGS bits are not cleared. This allows tracing of the error
condition.
EEPGD: Flash Program or Data EEPROM Memory Select bit
1 = Access program Flash memory
0 = Access data EEPROM memory
CFGS: Flash Program/Data EEPROM or Configuration Select bit
1 = Access Configuration registers
0 = Access program Flash or data EEPROM memory
Unimplemented: Read as ‘0’
FREE: Flash Row Erase Enable bit
1 = Erase the program memory row addressed by TBLPTR on the next WR command (cleared by
0 = Perform write only
WRERR: EEPROM Error Flag bit
1 = A write operation is prematurely terminated (any Reset during self-timed programming)
0 = The write operation completed normally
WREN: Write Enable bit
1 = Allows erase or write cycles
0 = Inhibits erase or write cycles
WR: Write Control bit
1 = Initiates a data EEPROM erase/write cycle or a program memory erase cycle or write cycle
0 = Write cycle completed
RD: Read Control bit
1 = Initiates a memory read
0 = Read completed
R/W-x
CFGS
completion of erase operation – TBLPTR<5:0> are ignored)
(The operation is self-timed and the bit is cleared by hardware once write is complete. The WR bit
can only be set (not cleared) in software.)
(Read takes one cycle. RD is cleared in hardware. The RD bit can only be set (not cleared) in soft-
ware. RD bit cannot be set when EEPGD = 1.)
EECON1: FLASH PROGRAM/DATA EEPROM CONTROL REGISTER 1
S = Settable only bit
W = Writable bit
‘1’ = Bit is set
U-0
—
PIC18F2331/2431/4331/4431
R/W-0
FREE
(1)
Preliminary
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
WRERR
R/W-x
(1)
WREN
R/W-0
x = Bit is unknown
R/S-0
WR
DS39616C-page 79
R/S-0
RD
bit 0