PIC16F636-I Datasheet, PDF (11/234 Pages) Microchip Technology – 8/14-Pin, Flash-Based 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC12F635/PIC16F636/639
1.0 DEVICE OVERVIEW
This document contains device specific information for
the PIC12F635/PIC16F636/639 devices.
FIGURE 1-1:
PIC12F635 BLOCK DIAGRAM
Block Diagrams and pinout descriptions of the devices
are as follows:
• PIC12F635 (Figure 1-1, Table 1-1)
• PIC16F636 (Figure 1-2, Table 1-2)
• PIC16F639 (Figure 1-3, Table 1-3)
Configuration
13
Data Bus
8
GPIO
Program Counter
GP0
Flash
1K x 14
GP1
Program
RAM
GP2
Memory
8-level Stack
64 bytes
GP3
(13-bit)
File
GP4
Program
Bus
14
Registers
GP5
RAM Addr
9
Instruction Reg
Direct Addr ⁷
Addr MUX
Indirect
8 Addr
FSR Reg
STATUS Reg
8
Instruction
Decode and
Control
OSC1/CLKIN
Timing
Generation
OSC2/CLKOUT
8 MHz 31 kHz
Internal Internal
Oscillator Oscillator
Power-up
Timer
Oscillator
Start-up Timer
Power-on
Reset
Watchdog
Timer
Brown-out
Reset
Programmable
Low-Voltage Detect
Wake-up
Reset
3
MUX
ALU
8
W Reg
T1G
T1CKI
T0CKI
Timer0
MCLR ^{VDD VSS}
Timer1
Cryptographic
Module
1 Analog
Comparator
and Reference
C1IN- C1IN+ C1OUT
EEDAT
128 bytes
Data
EEPROM
EEADDR
© 2007 Microchip Technology Inc.
DS41232D-page 9