PIC16C62B/72A
ommended reading for a better understanding of the
device architecture and operation of the peripheral
modules.
1.0
DEVICE OVERVIEW
This document contains device-specific information.
Additional information may be found in the PICmicro™
Mid-Range Reference Manual, (DS33023), which may
be obtained from your local Microchip Sales Represen-
tative or downloaded from the Microchip website. The
Reference Manual should be considered a comple-
mentary document to this data sheet, and is highly rec-
There are two devices (PIC16C62B, PIC16C72A) cov-
ered by this datasheet. The PIC16C62B does not have
the A/D module implemented.
Figure 1-1 is the block diagram for both devices. The
pinouts are listed in Table 1-1.
FIGURE 1-1: PIC16C62B/PIC16C72A BLOCK DIAGRAM
13
8
PORTA
Data Bus
Program Counter
RA0/AN0(2)
RA1/AN1(2)
RA2/AN2(2)
RA3/AN3/VREF
RA4/T0CKI
EPROM
2K x 14
RAM
Program
Memory
(2)
8 Level Stack
(13-bit)
128 x 8
File
Registers
RA5/SS/AN4(2)
Program
Bus
14
RAM Addr(1)
PORTB
9
Addr MUX
Instruction reg
RB0/INT
RB7:RB1
Indirect
Addr
7
Direct Addr
8
FSR reg
STATUS reg
PORTC
8
RC0/T1OSO/T1CKI
RC1/T1OSI
RC2/CCP1
RC3/SCK/SCL
RC4/SDI/SDA
RC5/SDO
3
MUX
Power-up
Timer
Oscillator
Start-up Timer
Instruction
Decode &
Control
RC6
RC7
ALU
Power-on
Reset
8
Timing
Generation
Watchdog
Timer
W reg
OSC1/CLKIN
OSC2/CLKOUT
Brown-out
Reset
MCLR VDD, VSS
Timer1
Timer0
Timer2
Synchronous
Serial Port
A/D(2)
CCP1
Note 1: Higher order bits are from the STATUS register.
2: The A/D module is not available on the PIC16C62B.
1999 Microchip Technology Inc.
Preliminary
DS35008B-page 5
MICROCHIP [ MICROCHIP ]
