PIC16F819-I/SO Microchip Technology Inc., PIC16F819-I/SO Datasheet - Page 28

• Manufacturer Part Number: PIC16F819-I/SO
• Description: 18 PIN, 3.5 KB FLASH, 256 RAM, 16 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F819-I/SO

• A/d Inputs: 5-Channel, 10-Bit
• Cpu Speed: 5 MIPS
• Eeprom Memory: 256 Bytes
• Input Output: 16
• Interface: I2C/SPI
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 18-pin SOIC
• Programmable Memory: 3.5K Bytes
• Ram Size: 256 Bytes
• Speed: 20 MHz
• Timers: 2-8-bit, 1-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

PIC16F818/819
REGISTER 3-1:
DS39598E-page 26
bit 7
bit 6-5
bit 4
bit 3
bit 2
bit 1
bit 0
EECON1: EEPROM ACCESS CONTROL REGISTER 1 (ADDRESS 18Ch)
bit 7
EEPGD: Program/Data EEPROM Select bit
1 = Accesses program memory
0 = Accesses data memory
Reads ‘0’ after a POR; this bit cannot be changed while a write operation is in progress.
Unimplemented: Read as ‘0’
FREE: EEPROM Forced Row Erase bit
1 = Erase the program memory row addressed by EEADRH:EEADR on the next WR command
0 = Perform write-only
WRERR: EEPROM Error Flag bit
1 = A write operation is prematurely terminated (any MCLR or any WDT Reset during normal
0 = The write operation completed
WREN: EEPROM Write Enable bit
1 = Allows write cycles
0 = Inhibits write to the EEPROM
WR: Write Control bit
1 = Initiates a write cycle. The bit is cleared by hardware once write is complete. The WR bit
0 = Write cycle to the EEPROM is complete
RD: Read Control bit
1 = Initiates an EEPROM read, RD is cleared in hardware. The RD bit can only be set (not
0 = Does not initiate an EEPROM read
Legend:
R = Readable bit
-n = Value at POR
EEPGD
R/W-x
operation)
can only be set (not cleared) in software.
cleared) in software.
U-0
—
W = Writable bit
‘1’ = Bit is set
U-0
—
R/W-x
FREE
S = Set only
‘0’ = Bit is cleared
WRERR
R/W-x
U = Unimplemented bit, read as ‘0’
x = Bit is unknown
WREN
R/W-0
 2004 Microchip Technology Inc.
R/S-0
WR
R/S-0
RD
bit 0