PIC16F639 Microchip Technology Inc., PIC16F639 Datasheet - Page 11
PIC16F639
Manufacturer Part Number
PIC16F639
Description
8/14-pin Flash-based, 8-bit Cmos Microcontrollers With Nanowatt Technology
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F639.pdf
(234 pages)
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This document contains device specific information for
the PIC12F635/PIC16F636/639 devices.
FIGURE 1-1:
© 2007 Microchip Technology Inc.
T1CKI
T0CKI
OSC2/CLKOUT
T1G
OSC1/CLKIN
DEVICE OVERVIEW
Program
Cryptographic
Oscillator
Internal
Bus
8 MHz
Timer0
Module
Generation
PIC12F635 BLOCK DIAGRAM
Instruction Reg
Timing
Decode and
Configuration
Instruction
Control
14
Program
1K x 14
Memory
Flash
Oscillator
Internal
31 kHz
8
13
Low-Voltage Detect
Timer1
MCLR V
C1IN- C1IN+ C1OUT
Programmable
Direct Addr
Start-up Timer
and Reference
Program Counter
Comparator
Brown-out
Watchdog
Power-up
Power-on
Oscillator
Wake-up
8-level Stack
1 Analog
Reset
Reset
Reset
Timer
Timer
(13-bit)
PIC12F635/PIC16F636/639
DD
V
SS
7
RAM Addr
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)
8
3
Data Bus
Addr MUX
Registers
W Reg
64 bytes
ALU
RAM
File
STATUS Reg
8
FSR Reg
9
MUX
128 bytes
EEPROM
EEADDR
Indirect
EEDAT
Data
Addr
8
GPIO
DS41232D-page 9
GP0
GP1
GP2
GP3
GP4
GP5
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