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PIC16C641-04/TQ Datasheet(PDF) 14 Page - Microchip Technology

Part # PIC16C641-04/TQ
Description  8-Bit EPROM Microcontrollers with Analog Comparators
PDF  136 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16C641-04/TQ Datasheet(HTML) 14 Page - Microchip Technology

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PIC16C64X & PIC16C66X
DS30559A-page 14
Preliminary
© 1996 Microchip Technology Inc.
PORTD can be a bi-directional I/O port or parallel
slave port for interfacing to a microprocessor bus.
RD0/PSP0
19
38
21
I/O
ST/TTL(3)
RD1/PSP1
20
39
22
I/O
ST/TTL(3)
RD2/PSP2
21
40
23
I/O
ST/TTL(3)
RD3/PSP3
22
41
24
I/O
ST/TTL(3)
RD4/PSP4
27
2
30
I/O
ST/TTL(3)
RD5/PSP5
28
3
31
I/O
ST/TTL(3)
RD6/PSP6
29
4
32
I/O
ST/TTL(3)
RD7/PSP7
30
5
33
I/O
ST/TTL(3)
PORTE is a bi-directional I/O port.
RE0/RD
8
25
9
I/O
ST/TTL(3)
RE0/RD read control for parallel slave port.
RE1/WR
9
26
10
I/O
ST/TTL(3)
RE1/WR write control for parallel slave port.
RE2/CS
10
27
11
I/O
ST/TTL(3)
RE2/CS select control for parallel slave port.
VSS
12,31
6,29
13,34
P
—
Ground reference for logic and I/O pins.
VDD
11,32
7,28
12,35
P
—
Positive supply for logic and I/O pins.
NC
—
12,13,
33,34
1,17
28,40
—
—
Not Connected.
Name
DIP
Pin #
QFP
Pin #
PLCC
Pin #
I/O/P
Type
Buffer
Type
Description
Legend:
O = output
I/O = input/output
P = power
I = input
— = not used
ST = Schmitt Trigger input
TTL = TTL input
Note 1: This buffer is a Schmitt Trigger input when configured as the external interrupt.
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 a general purpose I/O and a TTL input when used
in the Parallel Slave Port Mode (for interfacing to a microprocessor port).



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