PIC16F72-I/SP Microchip Technology Inc., PIC16F72-I/SP Datasheet - Page 7

• Manufacturer Part Number: PIC16F72-I/SP
• Description: 28 PIN, 3.5 KB FLASH, 128 RAM, 22 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F72-I/SP

• A/d Inputs: 5-Channel, 8-Bit
• Cpu Speed: 5 MIPS
• Eeprom Memory: 0 Bytes
• Input Output: 22
• Interface: I2C/SPI
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 28-pin SPDIP
• Programmable Memory: 3.5K Bytes
• Ram Size: 128 Bytes
• Speed: 20 MHz
• Timers: 2-8-bit, 1-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

1.0
This document contains device specific information for
the operation of the PIC16F72 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 PIC16F72 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:
 2002 Microchip Technology Inc.
Note 1: Higher order bits are from the STATUS register.
OSC2/CLKO
OSC1/CLKI
DEVICE OVERVIEW
Timer0
A/D
Program
Bus
Instruction reg
Generation
Instruction
Decode &
14
Memory
Control
Program
2K x 14
Timing
FLASH
PIC16F72 BLOCK DIAGRAM
Synchronous
Serial Port
Timer1
8
13
MCLR
Direct Addr
Start-up Timer
Program Counter
8-Level Stack
Brown-out
Watchdog
Power-up
Oscillator
Power-on
Reset
Reset
Timer
Timer
(13-bit)
V
DD
, V
Timer2
CCP1
7
SS
RAM Addr
8
3
(1)
Data Bus
Addr MUX
Registers
W reg
128 x 8
ALU
RAM
File
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
instruction. The data memory (RAM) contains 128 bytes.
There are 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
descriptions and details for each pin.
STATUS reg
FSR reg
8
MUX
9
Indirect
Addr
2
8
C
PORTB
PORTC
PORTA
PIC16F72
RA0/AN0
RA1/AN1
RA2/AN2
RA3/AN3/V
RA4/T0CKI
RA5/AN4/SS
RB0/INT
RB1
RB2
RB3
RB4
RB5
RB6/PGC
RB7/PGD
RC0/T1OSO/T1CKI
RC1/T1OSI
RC2/CCP1
RC3/SCK/SCL
RC4/SDI/SDA
RC5/SDO
RC6
RC7
DS39597B-page 5
REF