PIC16F631_08 Datasheet, PDF (11/306 Pages) Microchip Technology – 20-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC16F631/677/685/687/689/690
1.0 DEVICE OVERVIEW
The PIC16F631/677/685/687/689/690 devices are
covered by this data sheet. They are available in 20-pin
PDIP, SOIC, TSSOP and QFN packages.
Block Diagrams and pinout descriptions of the devices
are as follows:
• PIC16F631 (Figure 1-1, Table 1-1)
• PIC16F677 (Figure 1-2, Table 1-2)
• PIC16F685 (Figure 1-3, Table 1-3)
• PIC16F687/PIC16F689 (Figure 1-4, Table 1-4)
• PIC16F690 (Figure 1-5, Table 1-5)
FIGURE 1-1:
PIC16F631 BLOCK DIAGRAM
Configuration
Flash
1K x 14
Program
Memory
INT
13
Program Counter
8-Level Stack (13-bit)
Program ₁₄
Bus
Instruction Reg
Direct Addr
7
Data Bus
8
RAM
64 bytes
File
Registers
RAM Addr
9
Addr MUX
Indirect
8
Addr
FSR Reg
STATUS Reg
8
OSC1/CLKI
Instruction
Decode and
Control
Timing
OSC2/CLKO _Generation
Internal
Oscillator
Block
ULPWU
Ultra Low-Power
Wake-up
Power-up
Timer
Oscillator
Start-up Timer
Power-on
Reset
Watchdog
Timer
Brown-out
Reset
3
MUX
ALU
8
W Reg
MCLR VDD VSS
T0CKI
T1G T1CKI
Timer0
Timer1
EEDAT
128 Bytes
Data
EEPROM
EEADR
8
PORTA
PORTB
RA0
RA1
RA2
RA3
RA4
RA5
RB4
RB5
RB6
RB7
PORTC
RC0
RC1
RC2
RC3
RC4
RC5
RC6
RC7
C1IN- C1IN+ C1OUT C2IN- C2IN+ C2OUT
2
Analog Comparators
and Reference
© 2008 Microchip Technology Inc.
DS41262E-page 9