PIC16F877A-I/PT Microchip Technology Inc., PIC16F877A-I/PT Datasheet - Page 10

• 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

PIC16F87X
TABLE 1-2:
DS30292C-page 8
OSC1/CLKIN
OSC2/CLKOUT
MCLR/V
RA0/AN0
RA1/AN1
RA2/AN2/V
RA3/AN3/V
RA4/T0CKI
RA5/SS/AN4
RB0/INT
RB1
RB2
RB3/PGM
RB4
RB5
RB6/PGC
RB7/PGD
Legend: I = input
Note 1: This buffer is a Schmitt Trigger input when configured as an external interrupt.
Pin Name
2: This buffer is a Schmitt Trigger input when used in Serial Programming mode.
3: This buffer is a Schmitt Trigger input when configured as general purpose I/O and a TTL input when used in the Parallel
4: This buffer is a Schmitt Trigger input when configured in RC oscillator mode and a CMOS input otherwise.
PP
Slave Port mode (for interfacing to a microprocessor bus).
REF
REF
-
+
PIC16F874 AND PIC16F877 PINOUT DESCRIPTION
Pin#
DIP
O = output
— = Not used
13
14
33
34
35
36
37
38
39
40
1
2
3
4
5
6
7
PLCC
Pin#
14
15
36
37
38
39
41
42
43
44
2
3
4
5
6
7
8
Pin#
QFP
30
31
18
19
20
21
22
23
24
10
14
15
16
17
11
8
9
I/O = input/output
TTL = TTL input
I/O/P
Type
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/P
O
I
ST/CMOS
TTL/ST
TTL/ST
TTL/ST
Buffer
Type
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
ST
ST
—
(1)
(2)
(2)
(4)
Oscillator crystal input/external clock source input.
Oscillator crystal output. Connects to crystal or resonator
in crystal oscillator mode. In RC mode, OSC2 pin outputs
CLKOUT which has 1/4 the frequency of OSC1, and
denotes the instruction cycle rate.
Master Clear (Reset) input or programming voltage input.
This pin is an active low RESET to the device.
PORTA is a bi-directional I/O port.
PORTB is a bi-directional I/O port. PORTB can be soft-
ware programmed for internal weak pull-up on all inputs.
ST = Schmitt Trigger input
P = power
RA0 can also be analog input0.
RA1 can also be analog input1.
RA2 can also be analog input2 or negative
analog reference voltage.
RA3 can also be analog input3 or positive
analog reference voltage.
RA4 can also be the clock input to the Timer0 timer/
counter. Output is open drain type.
RA5 can also be analog input4 or the slave select for
the synchronous serial port.
RB0 can also be the external interrupt pin.
RB3 can also be the low voltage programming input.
Interrupt-on-change pin.
Interrupt-on-change pin.
Interrupt-on-change pin or In-Circuit Debugger pin.
Serial programming clock.
Interrupt-on-change pin or In-Circuit Debugger pin.
Serial programming data.
Description
2001 Microchip Technology Inc.