PIC16F631-I/P Microchip Technology Inc., PIC16F631-I/P Datasheet - Page 60

• Manufacturer Part Number: PIC16F631-I/P
• Description: MCU, 8-Bit, 1KW Flash, 64 RAM, 18 I/O, PDIP-20
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F631-I/P

• Comparators: 2
• Cpu Speed: 5 MIPS
• Eeprom Memory: 128 Bytes
• Input Output: 18
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 20-pin PDIP
• Programmable Memory: 1.75K Bytes
• Ram Size: 64 Bytes
• Speed: 20 MHz
• Timers: 1-8-bit, 1-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

PIC16F631/677/685/687/689/690
FIGURE 3-9:
TABLE 3-2:
DS41262D-page 58
CONFIG
OSCCON
OSCTUNE
PIE1
PIR1
Legend:
Note 1:
Clock Monitor Output
Name
2:
Sample Clock
(2)
Note:
x = unknown, u = unchanged, – = unimplemented locations read as ‘0’. Shaded cells are not used by oscillators.
Other (non Power-up) Resets include MCLR Reset and Watchdog Timer Reset during normal operation.
See Configuration Word register (Register 14-1) for operation of all register bits.
OSCFIF
System
Output
Clock
Bit 7
CPD
—
—
—
—
(Q)
SUMMARY OF REGISTERS ASSOCIATED WITH CLOCK SOURCES
The system clock is normally at a much higher frequency than the sample clock. The relative frequencies in
this example have been chosen for clarity.
FSCM TIMING DIAGRAM
IRCF2
ADIE
ADIF
Bit 6
CP
—
MCLRE
IRCF1
RCIE
RCIF
Bit 5
—
Test
PWRTE
IRCF0
TUN4
Bit 4
TXIE
TXIF
WDTE
SSPIE
SSPIF
OSTS
TUN3
Bit 3
CCP1IE
CCP1IF
FOSC2
TUN2
Bit 2
HTS
Test
TMR2IE
TMR2IF
FOSC1
Oscillator
Failure
TUN1
Bit 1
LTS
TMR1IE
TMR1IF
FOSC0
TUN0
Bit 0
SCS
© 2007 Microchip Technology Inc.
Detected
-110 x000
---0 0000
-000 0000
-000 0000
POR, BOR
Value on
Failure
—
Test
-110 x000
---u uuuu
-000 0000
-000 0000
Resets
Value on
all other
—
(1)