Philips Semiconductors
Pulse and DTMF diallers with redial
Product specification
PCD3310; PCD3310A
6 PINNING
PINS
SYMBOL
PCD3310P PCD3310T TYPE
PCD3310AP PCD3310AT
DESCRIPTION
OSCI
1
1
I oscillator input
PD/DTMF
2
2
I select pin; pulse or DTMF dialling input
TONE
3
3
O single or dual tone frequency output
n.c.
−
4
− not connected
VSS
4
5
P negative supply
n.c.
−
6
− not connected
n.c.
−
7
− not connected
FLD
5
8
I/O flash duration control input/output
ROW 5
6
9
I/O scanning row 5 keyboard input/output
ROW 4
n.c.
7
10
I/O scanning row 4 keyboard input/output
−
11
− not connected
ROW 3
8
12
I/O scanning row 3 keyboard input/output
ROW 2
9
13
I/O scanning row 2 keyboard input/output
ROW 1
10
14
I/O scanning row 1 keyboard input/output
COL 1
11
15
I sense column 1 keyboard input (with internal pull-up resistor)
COL 2
12
16
I sense column 2 keyboard input (with internal pull-up resistor)
COL 3
13
17
I sense column 3 keyboard input (with internal pull-up resistor)
n.c.
−
18
− not connected
COL 4
14
19
I sense column 4 keyboard input (with internal pull-up resistor)
CF/DMODE/FS
15
20
O confidence tone/dialling mode/frequency select outputs
DP/FLO
16
21
O dialling pulse and flash output
M2
−
22
O muting output 2
M1
−
23
O muting output 1 (active LOW)
M1
17
24
O muting output 1
n.c.
−
25
− not connected
CE
18
26
I chip enable input
VDD
OSCO
19
27
P positive supply voltage
20
28
O oscillator output
1996 Nov 21
6