PIC16C923T-08I/SP View Datasheet(PDF) - Microchip Technology
Part Name
Description
Manufacturer
PIC16C923T-08I/SP Datasheet PDF : 189 Pages
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PIC16C9XX
TABLE 3-1: PIC16C9XX PINOUT DESCRIPTION
Pin Name
OSC1/CLKIN
DIP
Pin#
22
PLCC
Pin#
24
OSC2/CLKOUT
23
25
MCLR/VPP
1
2
RA0/AN0
RA1/AN1
RA2/AN2
RA3/AN3/VREF
RA4/T0CKI
RA5/AN4/SS
4
5
5
6
7
8
8
9
9
10
10
11
RB0/INT
RB1
RB2
RB3
RB4
RB5
RB6
RB7
12
13
11
12
3
4
2
3
64
68
63
67
61
65
62
66
RC0/T1OSO/T1CKI 24
26
RC1/T1OSI
RC2/CCP1
25
27
26
28
RC3/SCK/SCL
13
14
RC4/SDI/SDA
14
15
RC5/SDO
15
16
C1
16
17
C2
17
18
Legend: I = input O = output
— = Not used
TQFP Pin
Pin# Type
Buffer
Type
Description
14
I
ST/CMOS
15
O
—
57 I/P
ST
60 I/O
TTL
61 I/O
TTL
63 I/O
TTL
64 I/O
TTL
1
I/O
ST
2
I/O
TTL
4
I/O
TTL/ST
3
I/O
59 I/O
58 I/O
56 I/O
55 I/O
53 I/O
TTL
TTL
TTL
TTL
TTL
TTL/ST
54 I/O
TTL/ST
16 I/O
ST
17 I/O
ST
18 I/O
ST
5
I/O
ST
6
I/O
ST
7
I/O
ST
8
P
9
P
P = power
TTL = TTL input
Oscillator crystal input or external clock source input. This
buffer is a Schmitt Trigger input when configured in RC
oscillator mode and a CMOS input otherwise.
Oscillator crystal output. Connects to crystal or resonator
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.
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. The AN and VREF multi-
plexed functions are used by the PIC16C924 only.
RA0 can also be Analog input0.
RA1 can also be Analog input1.
RA2 can also be Analog input2.
RA3 can also be Analog input3 or A/D Voltage Refer-
ence.
RA4 can also be the clock input to the Timer0
timer/counter. Output is open drain type.
RA5 can be the slave select for the synchronous serial
port or Analog input4.
PORTB is a bi-directional I/O port. PORTB can be software
programmed for internal weak pull-ups on all inputs.
RB0 can also be the external interrupt pin. This buffer
is a Schmitt Trigger input when configured as an exter-
nal interrupt.
Interrupt on change pin.
Interrupt on change pin.
Interrupt on change pin. Serial programming clock.
This buffer is a Schmitt Trigger input when used in
serial programming mode.
Interrupt on change pin. Serial programming data.
This buffer is a Schmitt Trigger input when used in
serial programming mode.
PORTC is a bi-directional I/O port.
RC0 can also be the Timer1 oscillator output or
Timer1 clock input.
RC1 can also be the Timer1 oscillator input.
RC2 can also be the Capture1 input/Compare1 out-
put/PWM1 output.
RC3 can also be the synchronous serial clock
input/output for both SPI and I2C modes.
RC4 can also be the SPI Data In (SPI mode) or data
I/O (I2C mode).
RC5 can also be the SPI Data Out (SPI mode).
LCD Voltage Generation.
LCD Voltage Generation.
L = LCD Driver
ST = Schmitt Trigger input
DS30444E - page 12
© 1997 Microchip Technology Inc.
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