RFPIC12C509AG Datasheet, PDF (14/104 Pages) Microchip Technology – 18/20-Pin 8-Bit CMOS Microcontroller with UHF ASK/FSK Transmitter

rfPIC12C509AG/509AF
TABLE 3-1: rfPIC12C509AG/509AF PINOUT DESCRIPTION
Name
SOIC
CERDIP
Pin #
SSOP
Pin #
I/O/P
Type
Buffer
Type
Description
GP0
17
19
I/O TTL/ST Bi-directional I/O port/ serial programming data. Can
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.
GP1
16
18
I/O TTL/ST Bi-directional I/O port/ serial programming clock. Can
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.
GP2/T0CKI
15
17
I/O
ST Bi-directional I/O port. Can be configured as T0CKI.
GP3/MCLR/VPP
4
4
I TTL/ST Input port/master clear (Reset) input/programming
voltage input. When configured as MCLR, this pin is
an active low RESET to the device. Voltage on MCLR/
VPP must not exceed VDD during normal device opera-
tion 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.
GP4/OSC2
3
3
I/O
TTL 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).
GP5/OSC1/CLKIN
2
2
I/O TTL/ST Bi-directional IO port/oscillator crystal input/external
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.
VDD
1
1
P
— Positive supply for logic and I/O pins
VSS
18
20
P
— Ground reference for logic and I/O pins
RFENIN
5
6
I
TTL Transmitter and CLKOUT enable. Internal pull-down.
CLKOUT
6
7
O
— Clock output.
PS/DATAASK
7
8
I
— Power select and ASK data input.
VDDRF
8
9
P
— Positive supply for transmitter.
ANT2
9
10
O
— Antenna connection to differential power amplifier out-
put, open collector.
ANT1
10
11
O
— Antenna connection to differential power amplifier out-
put, open collector.
VSSRF
11
12
P
— Ground reference for transmitter.
LF
13
14
—
AN External loop filter connection. Common node of
charge pump output and VCO tuning input.
XTAL
14
5
I
— Transmitter crystal connection to colpitts type crystal
oscillator.
DATAFSK
—
15
I
TTL FSK data input.
FSKOUT
—
16
O
— FSK crystal pulling output.
Legend: I = input, O = output, I/O = input/output, P = power, — = not used, TTL = TTL input, ST = Schmitt Trigger
input, AN = analog, CMOS = CMOS
DS70031A-page 12
Preliminary
© 2001 Microchip Technology Inc.