Datasheet

© 2007 Microchip Technology Inc. DS41202F-page 5
PIC16F684
1.0 DEVICE OVERVIEW
The PIC16F684 is covered by this data sheet. It is
available in 14-pin PDIP, SOIC, TSSOP and 16-pin
QFN packages. Figure 1-1 shows a block diagram of
the PIC16F684 device. Table 1-1 shows the pinout
description.
FIGURE 1-1: PIC16F684 BLOCK DIAGRAM
Flash
Program
Memory
13
Data Bus
8
14
Program
Bus
Instruction Reg
Program Counter
RAM
File
Registers
Direct
Addr
7
RAM Addr
9
Addr MUX
Indirect
Addr
FSR Reg
STATUS Reg
MUX
ALU
W Reg
Instruction
Decode &
Control
Timing
Generation
OSC1/CLKIN
OSC2/CLKOUT
PORTA
8
8
8
3
8-Level Stack
128 Bytes
2k X 14
(13-Bit)
Power-up
Timer
Oscillator
Start-up Timer
Power-on
Reset
Watchdog
Timer
MCLR
VSS
Brown-out
Reset
Timer0 Timer1
Data
EEPROM
256 Bytes
EEDATA
EEADDR
RA0
RA1
RA2
RA3
RA4
RA5
2 Analog Comparators
Analog-To-Digital Converter
AN0 AN1 AN2 AN3
C1IN- C1IN+ C1OUT
T0CKI
INT
T1CKI
Configuration
Internal
Oscillator
VREF
and Reference
T1G
PORTC
RC0
RC1
RC2
RC3
RC4
RC5
AN4 AN5 AN6 AN7
VDD
8
Timer2
C2IN- C2IN+ C2OUT
ECCP
Block
CCP1/P1A
P1B P1C P1D