Datasheet

© 2007 Microchip Technology Inc. DS41250F-page 15
PIC16F913/914/916/917/946
1.0 DEVICE OVERVIEW
The PIC16F91X/946 devices are covered by this data
sheet. They are available in 28/40/44/64-pin packages.
Figure 1-1 shows a block diagram of the PIC16F913/916
device, Figure 1-2 shows a block diagram of the
PIC16F914/917 device, and Figure 1-3 shows a block
diagram of the PIC16F946 device. Table 1-1 shows the
pinout descriptions.
FIGURE 1-1: PIC16F913/916 BLOCK DIAGRAM
Power-up
Timer
Oscillator
Start-up Timer
Power-on
Reset
Watchdog
Timer
Brown-out
Reset
RB0
RB1
RB2
RB3
RB4
RB5
RB6
RB7
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 and
Control
Timing
Generation
OSC1/CLKIN
OSC2/CLKOUT
PORTA
8
8
8
3
8-Level Stack (13-bit)
256/352 bytes
4K/8K x 14
VSS
RA0
RA1
RA2
RA3
RA4
RA5
RA7
INT
Configuration
Internal
Oscillator
VDD
Block
Program Memory Read
PORTC
RC0
RC1
RC2
RC3
RC4
RC5
RC6
RC7
PORTE
RE3/MCLR
(PMR)
PORTB
PLVD LCD
Data EEPROM
256 bytes
Comparators
Addressable
USART
CCP1 SSP
Timer0
Timer1 Timer2 10-bit A/D