參數(shù)資料
型號: PIC16C662T-20I/L
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 20 MHz, RISC MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 35/136頁
文件大?。?/td> 634K
代理商: PIC16C662T-20I/L
1996 Microchip Technology Inc.
Preliminary
DS30559A-page 13
PIC16C64X & PIC16C66X
TABLE 3-2:
PIC16C661/662 PINOUT DESCRIPTION
Name
DIP
Pin #
QFP
Pin #
PLCC
Pin #
I/O/P
Type
Buffer
Type
Description
OSC1/CLKIN
13
30
14
I
ST/CMOS Oscillator crystal input or external clock source
input.
OSC2/CLKOUT
14
31
15
O
Oscillator crystal output. Connects to crystal or reso-
nator 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.
MCLR/VPP
1
18
2
I/P
ST
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.
RA0/AN0
2
19
3
I/O
ST
Analog comparator input.
RA1/AN1
3
20
4
I/O
ST
Analog comparator input.
RA2/AN2/VREF
4
21
5
I/O
ST
Analog comparator input or VREF output.
RA3/AN3
5
22
6
I/O
ST
Analog comparator input or comparator output.
RA4/T0CKI
6
23
7
I/O
ST
Can be selected to be the clock input to the
Timer0 timer/counter or a comparator output.
Output is open drain type.
RA5
7
24
8
I/O
ST
PORTB is a bi-directional I/O port. PORTB can be
software programmed for internal weak pull-ups on
all inputs.
RB0/INT
33
8
36
I/O
TTL/ST(1)
RB0 can also be selected as an external
interrupt pin.
RB1
34
9
37
I/O
TTL
RB2
35
10
38
I/O
TTL
RB3
36
11
39
I/O
TTL
RB4
37
14
41
I/O
TTL
Interrupt on change pin.
RB5
38
15
42
I/O
TTL
Interrupt on change pin.
RB6
39
16
43
I/O
TTL/ST(2)
Interrupt on change pin. Serial programming
clock.
RB7
40
17
44
I/O
TTL/ST(2)
Interrupt on change pin. Serial programming
data.
PORTC is a bi-directional I/O port.
RC0
15
32
16
I/O
ST
RC1
16
35
18
I/O
ST
RC2
17
36
19
I/O
ST
RC3
18
37
20
I/O
ST
RC4
23
42
25
I/O
ST
RC5
24
43
26
I/O
ST
RC6
25
44
27
I/O
ST
RC7
26
1
29
I/O
ST
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 congured 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 congured 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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