PIC16F818-I/P Microchip Technology, PIC16F818-I/P Datasheet - Page 57

• Manufacturer Part Number: PIC16F818-I/P
• Description: IC MCU FLASH 1KX14 18-DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F818-I/P

• Program Memory Type: FLASH
• Program Memory Size: 1.75KB (1K x 14)
• Package / Case: 18-DIP (0.300", 7.62mm)
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 16
• Eeprom Size: 128 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Interface Type: I2C/SPI/SSP
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 3
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM163014
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 5-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: ACICE0202 - ADAPTER MPLABICE 18P 300 MILAC164010 - MODULE SKT PROMATEII DIP/SOIC
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

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