PIC12C508A Microchip Technology, PIC12C508A Datasheet - Page 11

• Manufacturer Part Number: PIC12C508A
• Description: 8-Pin/ 8-Bit CMOS Microcontrollers
• Manufacturer: Microchip Technology

TABLE 3-1:
GP0
GP1
GP2/T0CKI
GP3/MCLR/V
GP4/OSC2
GP5/OSC1/CLKIN
V
V
DD
SS
1999 Microchip Technology Inc.
Legend: I = input, O = output, I/O = input/output, P = power, — = not used, TTL = TTL input,
ST = Schmitt Trigger input
Name
PP
PIC12C5XX PINOUT DESCRIPTION
Pin #
DIP
7
6
5
4
3
2
1
8
SOIC
Pin #
7
6
5
4
3
2
1
8
I/O/P
Type
I/O
I/O
I/O
I/O
I/O
P
P
I
TTL/ST Bi-directional I/O port/ serial programming data. Can
TTL/ST Bi-directional I/O port/ serial programming clock. Can
TTL/ST Input port/master clear (reset) input/programming volt-
TTL/ST Bidirectional IO port/oscillator crystal input/external
Buffer
Type
TTL
ST
—
—
Bi-directional I/O port. Can be configured as T0CKI.
be software programmed for internal weak pull-up and
wake-up from SLEEP on pin change. This buffer is a
Schmitt Trigger input when used in serial programming
mode.
be software programmed for internal weak pull-up and
wake-up from SLEEP on pin change. This buffer is a
Schmitt Trigger input when used in serial programming
mode.
age input. When configured as MCLR, this pin is an
active low reset to the device. Voltage on MCLR/V
must not exceed V
or the device will enter programming mode. Can be
software programmed for internal weak pull-up and
wake-up from SLEEP on pin change. Weak pull-up
always on if configured as MCLR. ST when in MCLR
mode.
Bi-directional I/O port/oscillator crystal output. Con-
nections to crystal or resonator in crystal oscillator
mode (XT and LP modes only, GPIO in other modes).
clock source input (GPIO in Internal RC mode only,
OSC1 in all other oscillator modes). TTL input when
GPIO, ST input in external RC oscillator mode.
Positive supply for logic and I/O pins
Ground reference for logic and I/O pins
DD
Description
during normal device operation
PIC12C5XX
DS40139E-page 11
PP