参数资料
型号: PIC17CXX
厂商: Microchip Technology Inc.
英文描述: EPROM Memory Programming Specification
中文描述: EPROM存储器编程规范
文件页数: 4/71页
文件大小: 1173K
代理商: PIC17CXX
PIC17C4X
DS30412C-page 12
1996 Microchip Technology Inc.
TABLE 3-1:
PINOUT DESCRIPTIONS
Name
DIP
No.
PLCC
No.
QFP
No.
I/O/P
Type
Buffer
Type
Description
OSC1/CLKIN
19
21
37
I
ST
Oscillator input in crystal/resonator or RC oscillator mode.
External clock input in external clock mode.
OSC2/CLKOUT
20
22
38
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 fre-
quency of OSC1 and denotes the instruction cycle rate.
MCLR/VPP
32
35
7
I/P
ST
Master clear (reset) input/Programming Voltage (VPP) input.
This is the active low reset input to the chip.
PORTA is a bi-directional I/O Port except for RA0 and RA1
which are input only.
RA0/INT
26
28
44
I
ST
RA0/INT can also be selected as an external interrupt
input. Interrupt can be congured to be on positive or
negative edge.
RA1/T0CKI
25
27
43
I
ST
RA1/T0CKI can also be selected as an external interrupt
input, and the interrupt can be congured to be on posi-
tive or negative edge. RA1/T0CKI can also be selected
to be the clock input to the Timer0 timer/counter.
RA2
24
26
42
I/O
ST
High voltage, high current, open drain input/output port
pins.
RA3
23
25
41
I/O
ST
High voltage, high current, open drain input/output port
pins.
RA4/RX/DT
22
24
40
I/O
ST
RA4/RX/DT can also be selected as the USART (SCI)
Asynchronous Receive or USART (SCI) Synchronous
Data.
RA5/TX/CK
21
23
39
I/O
ST
RA5/TX/CK can also be selected as the USART (SCI)
Asynchronous Transmit or USART (SCI) Synchronous
Clock.
PORTB is a bi-directional I/O Port with software congurable
weak pull-ups.
RB0/CAP1
11
13
29
I/O
ST
RB0/CAP1 can also be the CAP1 input pin.
RB1/CAP2
12
14
30
I/O
ST
RB1/CAP2 can also be the CAP2 input pin.
RB2/PWM1
13
15
31
I/O
ST
RB2/PWM1 can also be the PWM1 output pin.
RB3/PWM2
14
16
32
I/O
ST
RB3/PWM2 can also be the PWM2 output pin.
RB4/TCLK12
15
17
33
I/O
ST
RB4/TCLK12 can also be the external clock input to
Timer1 and Timer2.
RB5/TCLK3
16
18
34
I/O
ST
RB5/TCLK3 can also be the external clock input to
Timer3.
RB6
17
19
35
I/O
ST
RB7
18
20
36
I/O
ST
PORTC is a bi-directional I/O Port.
RC0/AD0
2
3
19
I/O
TTL
This is also the lower half of the 16-bit wide system bus
in microprocessor mode or extended microcontroller
mode. In multiplexed system bus conguration, these
pins are address output as well as data input or output.
RC1/AD1
3
4
20
I/O
TTL
RC2/AD2
4
5
21
I/O
TTL
RC3/AD3
5
6
22
I/O
TTL
RC4/AD4
6
7
23
I/O
TTL
RC5/AD5
7
8
24
I/O
TTL
RC6/AD6
8
9
25
I/O
TTL
RC7/AD7
9
10
26
I/O
TTL
Legend: I = Input only; O = Output only; I/O = Input/Output; P = Power; — = Not Used; TTL = TTL input;
ST = Schmitt Trigger input.
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