PIC16F819-I/SO Microchip Technology Inc., PIC16F819-I/SO Datasheet - Page 57

• 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

EXAMPLE 6-1:
EXAMPLE 6-2:
TABLE 6-1:
 2004 Microchip Technology Inc.
01h,101h
0Bh,8Bh,
10Bh,18Bh
81h,181h
Legend:
CLRWDT
BANKSEL OPTION_REG
MOVLW
MOVWF
Address
BANKSEL
MOVLW
MOVWF
BANKSEL
CLRF
BANKSEL
MOVLW
MOVWF
CLRWDT
MOVLW
MOVWF
x = unknown, u = unchanged, - = unimplemented locations read as ‘0’. Shaded cells are not used by Timer0.
b'xxxx0xxx'
OPTION_REG
TMR0
INTCON
OPTION_REG
Name
OPTION_REG
b'xx0x0xxx'
OPTION_REG
TMR0
TMR0
OPTION_REG
b'xxxx1xxx'
OPTION_REG
b'xxxx1xxx'
OPTION_REG
REGISTERS ASSOCIATED WITH TIMER0
CHANGING THE PRESCALER ASSIGNMENT FROM TIMER0 TO WDT
CHANGING THE PRESCALER ASSIGNMENT FROM WDT TO TIMER0
Timer0 Module Register
RBPU
Bit 7
GIE
; Clear WDT and prescaler
; Select Bank of OPTION_REG
; Select TMR0, new prescale
; value and clock source
; Select Bank of OPTION_REG
; Select clock source and prescale value of
; other than 1:1
; Select Bank of TMR0
; Clear TMR0 and prescaler
; Select Bank of OPTION_REG
; Select WDT, do not change prescale value
; Clears WDT and prescaler
; Select new prescale value and WDT
INTEDG
PEIE
Bit 6
TMR0IE
T0CS
Bit 5
T0SE
INTE
Bit 4
RBIE TMR0IF
Bit 3
PSA
Bit 2
PS2
PIC16F818/819
Bit 1
INTF
PS1
Bit 0
RBIF 0000 000x 0000 000u
PS0
xxxx xxxx uuuu uuuu
1111 1111 1111 1111
POR, BOR
Value on
DS39598E-page 55
Value on
all other
Resets