PIC17C7XX_13 Datasheet, PDF (14/306 Pages) Microchip Technology – High-Performance 8-bit CMOS EPROM Microcontrollers with 10-bit A/D

PIC17C7XX
TABLE 3-1: PINOUT DESCRIPTIONS
Name
PIC17C75X
PIC17C76X
DIP PLCC TQFP PLCC QFP
No. No. No. No. No.
I/O/P Buffer
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.
PORTA pins have individual differentiations that are
listed in the following descriptions:
RA0/INT
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.
RA1/T0CKI
41
44
33
56
43
I
ST
RA2/SS/SCL
42
45
34
57
44 I/O⁽²⁾ ST
RA3/SDI/SDA
43
46
35
58
45 I/O⁽²⁾ ST
RA4/RX1/DT1
40
43
32
51
38 I/O⁽¹⁾ ST
RA5/TX1/CK1
39
42
31
50
37 I/O⁽¹⁾ 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 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 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 can also be selected as the USART1 (SCI)
Asynchronous Receive or USART1 (SCI)
Synchronous Data.
Output available from USART only.
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
55
59
47
71
57 I/O ST
RB0 can also be the Capture1 input pin.
RB1/CAP2
54
58
46
70
56 I/O ST
RB1 can also be the Capture2 input pin.
RB2/PWM1
50
54
42
66
52 I/O ST
RB2 can also be the PWM1 output pin.
RB3/PWM2
53
57
45
69
55 I/O ST
RB3 can also be the PWM2 output pin.
RB4/TCLK12
52
56
44
68
54 I/O ST
RB4 can also be the external clock input to
Timer1 and Timer2.
RB5/TCLK3
51
55
43
67
53 I/O ST
RB5 can also be the external clock input to
Timer3.
RB6/SCK
44
47
36
59
46 I/O ST
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.
DS30289C-page 14
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