PIC16F877A-I/PT Microchip Technology Inc., PIC16F877A-I/PT Datasheet - Page 7

• Manufacturer Part Number: PIC16F877A-I/PT
• Description: 44 PIN, 7 KB FLASH, 368 RAM, 33 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F877A-I/PT

• A/d Inputs: 8-Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 5 MIPS
• Eeprom Memory: 256 Bytes
• Input Output: 33
• Interface: I2C/SPI/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 44-pin TQFP
• Programmable Memory: 14K Bytes
• Ram Size: 368 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.
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 complemen-
tary 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.
FIGURE 1-1:
2001 Microchip Technology Inc.
Note 1: Higher order bits are from the STATUS register.
Data EEPROM
PIC16F873
PIC16F876
Device
Timer0
OSC2/CLKOUT
OSC1/CLKIN
DEVICE OVERVIEW
Program
Bus
Program
Instruction reg
FLASH
Generation
PIC16F873 AND PIC16F876 BLOCK DIAGRAM
Instruction
Decode &
14
Program
Control
Memory
Timing
4K
8K
FLASH
CCP1,2
Timer1
Data Memory
8
13
192 Bytes
368 Bytes
MCLR
Direct Addr
Start-up Timer
Programming
Program Counter
Low Voltage
8 Level Stack
Watchdog
Brown-out
Power-up
Power-on
Debugger
Oscillator
In-Circuit
Timer
Reset
Timer
Reset
(13-bit)
Synchronous
Serial Port
V
Timer2
DD
, V
128 Bytes
256 Bytes
7
EEPROM
SS
RAM Addr
Data
8
3
(1)
Data Bus
Addr MUX
Registers
W reg
ALU
There are four devices (PIC16F873, PIC16F874,
PIC16F876 and PIC16F877) covered by this data
sheet. The PIC16F876/873 devices come in 28-pin
packages and the PIC16F877/874 devices come in
40-pin packages. The Parallel Slave Port is not
implemented on the 28-pin devices.
The following device block diagrams are sorted by pin
number; 28-pin for Figure 1-1 and 40-pin for Figure 1-2.
The 28-pin and 40-pin pinouts are listed in Table 1-1
and Table 1-2, respectively.
RAM
File
STATUS reg
FSR reg
10-bit A/D
USART
9
MUX
8
Indirect
Addr
8
PORTC
PORTA
PORTB
PIC16F87X
RA0/AN0
RA1/AN1
RA2/AN2/V
RA3/AN3/V
RA4/T0CKI
RA5/AN4/SS
RB0/INT
RB1
RB2
RB3/PGM
RB4
RB5
RB6/PGC
RB7/PGD
RC0/T1OSO/T1CKI
RC1/T1OSI/CCP2
RC2/CCP1
RC3/SCK/SCL
RC4/SDI/SDA
RC5/SDO
RC6/TX/CK
RC7/RX/DT
DS30292C-page 5
REF
REF
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