PIC16F627-20I/P Microchip Technology, PIC16F627-20I/P Datasheet - Page 46

• Manufacturer Part Number: PIC16F627-20I/P
• Description: IC MCU FLASH 1KX14 COMP 18DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F627-20I/P

• Core Size: 8-Bit
• Program Memory Size: 1.75KB (1K x 14)
• Core Processor: PIC
• Speed: 20MHz
• Connectivity: UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 224 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 18-DIP (0.300", 7.62mm)
• Controller Family/series: PIC16F
• No. Of I/o's: 16
• Eeprom Memory Size: 128Byte
• Ram Memory Size: 224Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DVA16XP183 - ADAPTER ICE 18DIP/SOIC/SSOPAC164010 - MODULE SKT PROMATEII DIP/SOIC
• Data Converters: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

PIC16F62X
6.3
An 8-bit counter is available as a prescaler for the
Timer0 module, or as a postscaler for the Watchdog
Timer. A prescaler assignment for the Timer0 module
means that there is no postscaler for the Watchdog
Timer, and vice-versa.
FIGURE 6-1:
DS40300C-page 44
WDT Enable bit
T0CKI
Watchdog
Pin
Note 1: T0SE, T0CS, PSA, PS0-PS2 are bits in the Option Register.
Timer
Timer0 Prescaler
F
OSC
/4
T0SE
BLOCK DIAGRAM OF THE TIMER0/WDT
0
1
PSA
.
T0CS
0
1
WDT Postscaler/
TMR0 Prescaler
0
Timeout
WDT
Preliminary
8-to-1MUX
8
1
1
0
PSA
The PSA and PS2:PS0 bits (OPTION<3:0>) determine
the prescaler assignment and prescale ratio.
When assigned to the Timer0 module, all instructions
writing
MOVWF 1, BSF 1, x....etc.) will clear the pres-
caler. When assigned to WDT, a CLRWDT instruction
will clear the prescaler along with the Watchdog Timer.
The prescaler is not readable or writable.
PSA
to
PS0 - PS2
Cycles
SYNC
2
the
TMR0
 2003 Microchip Technology Inc.
TMR0 reg
register
Data Bus
8
Set Flag Bit T0IF
(e.g.,
on Overflow
CLRF 1,