PIC17C7XX Datasheet, PDF (12/328 Pages) Microchip Technology – High-Performance 8-Bit CMOS EPROM Microcontrollers with 10-bit A/D

PIC17C7XX
TABLE 3-1: PINOUT DESCRIPTIONS
PIC17C75X
PIC17C76X
Name
DIP PLCC TQFP PLCC QFP I/O/P Buffer
No. No. No. No. No. Type Type
Description
OSC1/CLKIN
47
50
39
62
49
I
ST Oscillator input in crystal/resonator or RC oscillator
mode. External clock input in external clock mode.
OSC2/CLKOUT 48
51
40
63
50
O
— Oscillator output. Connects to crystal or resonator in
crystal oscillator mode. In RC oscillator or external
clock modes OSC2 pin outputs CLKOUT which has
one fourth the frequency (FOSC/4) of OSC1 and
denotes the instruction cycle rate.
MCLR/VPP
15
16
7
20
9
I/P ST Master clear (reset) input or Programming Voltage
(VPP) input. This is the active low reset input to the
device.
RA0/INT
RA1/T0CKI
PORTA pins have individual differentiations that are
listed in the following descriptions:
56
60
48
72
58
I
ST
RA0 can also be selected as an external inter-
rupt input. Interrupt can be configured to be on
positive or negative edge. Input only pin.
41
44
33
56
43
I
ST
RA1 can also be selected as an external inter-
rupt input, and the interrupt can be configured
to be on positive or negative edge. RA1 can
also be selected to be the clock input to the
Timer0 timer/counter. Input only pin.
RA2/SS/SCL
42
45
34
57
44 _I/O (2) ST
RA2 can also be used as the slave select input
for the SPI or the clock input for the I²C bus.
High voltage, high current, open drain port pin.
RA3/SDI/SDA
43
46
35
58
45 _I/O (2) ST
RA3 can also be used as the data input for the
SPI or the data for the I²C bus.
High voltage, high current, open drain port pin.
RA4/RX1/DT1
40
43
32
51
38 _I/O (1) ST
RA4 can also be selected as the USART1 (SCI)
Asynchronous Receive or USART1 (SCI)
Synchronous Data.
Output available from USART only.
RA5/TX1/CK1
39
42
31
50
37 _I/O (1) ST
RA5 can also be selected as the USART1 (SCI)
Asynchronous Transmit or USART1 (SCI)
Synchronous Clock.
Output available from USART only.
PORTB is a bi-directional I/O Port with software
configurable weak pull-ups.
RB0/CAP1
RB1/CAP2
55
59
47
71
57 I/O ST
54
58
46
70
56 I/O ST
RB0 can also be the Capture1 input pin.
RB1 can also be the Capture2 input pin.
RB2/PWM1
RB3/PWM2
50
54
42
66
52 I/O ST
53
57
45
69
55 I/O ST
RB2 can also be the PWM1 output pin.
RB3 can also be the PWM2 output pin.
RB4/TCLK12
RB5/TCLK3
RB6/SCK
52
56
44
68
54 I/O ST
51
55
43
67
53 I/O ST
44
47
36
59
46 I/O ST
RB4 can also be the external clock input to
Timer1 and Timer2.
RB5 can also be the external clock input to
Timer3.
RB6 can also be used as the master/slave clock
for the SPI.
RB7/SDO
45
48
37
60
47 I/O ST
RB7 can also be used as the data output for the
SPI.
Legend: I = Input only;
O = Output only;
I/O = Input/Output;
P = Power;
— = Not Used;
TTL = TTL input; ST = Schmitt Trigger input.
Note 1: The output is only available by the peripheral operation.
2: Open Drain input/output pin. Pin forced to input upon any device reset.
DS30289A-page 12
© 1998 Microchip Technology Inc.