PIC16C72-02/SS Microchip Technology, PIC16C72-02/SS Datasheet - Page 3

• Manufacturer Part Number: PIC16C72-02/SS
• Description: 8-Bit CMOS Microcontrollers with A/D Converter
• Manufacturer: Microchip Technology

1.0
This document contains device-specific information for
the operation of the PIC16C72 device. Additional infor-
mation may be found in the PICmicro™ Mid-Range
MCU Reference Manual (DS33023) which may be
downloaded from the Microchip website. The Refer-
ence Manual should be considered a complementary
document to this data sheet, and is highly recom-
mended reading for a better understanding of the
device architecture and operation of the peripheral
modules.
The PIC16C72 belongs to the Mid-Range family of the
PICmicro devices. A block diagram of the device is
shown in Figure 1-1.
FIGURE 1-1:
1998 Microchip Technology Inc.
Note 1:
OSC2/CLKOUT
OSC1/CLKIN
DEVICE OVERVIEW
Timer0
A/D
Program
Bus
Higher order bits are from the STATUS register.
PIC16C72/CR72 BLOCK DIAGRAM
Instruction reg
Generation
Instruction
Decode &
Program
14
EPROM/
Memory
Control
Timing
2K x 14
ROM
Synchronous
Serial Port
Timer1
8
13
MCLR
Direct Addr
Start-up Timer
Program Counter
8 Level Stack
Watchdog
Brown-out
Power-up
Power-on
Oscillator
Timer
Reset
Timer
Reset
(13-bit)
V
DD
, V
Timer2
CCP1
SS
7
Preliminary
RAM Addr
8
3
Data Bus
(1)
Addr MUX
Registers
W reg
128 x 8
ALU
RAM
File
STATUS reg
The program memory contains 2K words which trans-
late to 2048 instructions, since each 14-bit program
memory word is the same width as each device instruc-
tion. The data memory (RAM) contains 128 bytes.
There are also 22 I/O pins that are user-configurable on
a pin-to-pin basis. Some pins are multiplexed with other
device functions. These functions include:
• External interrupt
• Change on PORTB interrupt
• Timer0 clock input
• Timer1 clock/oscillator
• Capture/Compare/PWM
• A/D converter
• SPI/I
Table 1-1 details the pinout of the device with descrip-
tions and details for each pin.
FSR reg
8
MUX
9
Indirect
Addr
2
8
C
PIC16C72 Series
PORTA
PORTB
PORTC
RA0/AN0
RA1/AN1
RA2/AN2
RA3/AN3/V
RA4/T0CKI
RA5/SS/AN4
RB0/INT
RB7:RB1
RC0/T1OSO/T1CKI
RC1/T1OSI
RC2/CCP1
RC3/SCK/SCL
RC4/SDI/SDA
RC5/SDO
RC6
RC7
DS39016A-page 3
REF