LC72323-XXXX 데이터 시트보기 (PDF) - SANYO -> Panasonic
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LC72323-XXXX Datasheet PDF : 27 Pages
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LC72323-XXXX
Ports
Pin
Name
1
XIN
2
TEST2
3
PG3
4
PG2
5
PG1
6
PG0
7
PH3
8
PH2
9
PH1
I/O Allocation Active
Function
Handling when unused
I
XIN
—
Connection for the 4.5 MHz crystal
—
I
TEST2
—
Connect to ground
—
I
SK
High: “SK” display on, low: “SK” display off
In bands other than the FM band, the SK display is always off
regardless of whether this pin is high or low.
An SK high search starts when the VF key is pressed. When an SD
Connect directly to
H
present state is detected, the circuit checks again after between 375 ground.
and 500 ms, and if the signal is high, it holds that frequency. After
that, if a low level continues for 25 seconds, an auto retune operation
starts. (sampling = 25 ms)
I
DK
In VF mode and in either tape or CD mode, if a high level is input to
this signal (if a high level is detected three times in a row at 25 ms
H
intervals), the circuit switches to radio mode, and ARI broadcast
Connect directly to
reception becomes possible. Also, after a VF key on and an SK seek, ground.
DK is checked 2 s after an SK present state is recognized.
I
/SD
L
Output signal that reports station reception during auto tuning.
Must be used.
I
/ST
Low: “STEREO” display on, high: “STEREO” display off
the STEREO display is turned off in bands other than the FM band
Connect directly to
L
regardless of the high or low state of this pin.
VDD.
O
BEEP
O
BAND2
O
BAND1
Monitors all keys and outputs a 50 ms 3 kHz pulse when any key is
H
pressed. (A pull-up resistor is required.)*
Open
These pin outputs change according to the table when either the
BAND or VF key is pressed. (A pulll-up resistor is required.)
H
BAND1 BAND2
Open
VF
H
H
FM
H
L
MW
L
L
H
LW
L
H
Open
10
PH0
11
PF3
O
/POWER
O
LOCAL
Outputs a low level in power on mode, high in power off mode.
L
(A pull-up resistor is required.)
Connect directly to
ground.
Outputs a low level in normal mode. Outputs a high level when the
H
DX display is turned off in seek and scan modes.
Open
12
PF2
O
STEREO
H
The output is inverted when the stereo key is pressed in the FM band. Open
13
PF1
I
/TAPE
L
Detects a tape input.
14
PF0
15
PE3
16
PE2
17
PE1
18
19
20
21
22
23
24
25
26 to
30
32 to
35
36 to
63
PE0
PD3
PD2
PD1
PD0
PC3
PC2
PC1
PC0 to
PB0
PA3 to
PA0
S28 to
S1
I TAPE RUN
—
O
DOLBY
H
O
METAL
H
O
APSS
H
O LOUDNESS
H
O
/AMUTE
L
O
LEDFL
H
O
DI/KS9
H
O
CLK/KS8
H
O
CE/KS7
H
O
KS6
H
O
KS5
H
O KS4 to KS0
H
I
K3 to K0
H
S28 to
O
S1
H
The “ ” indicator lights when high and the “
when low.
” indicator lights
High indicates that the Dolby indicator is on (only in tape mode) and a
low indicates that the Dolby indicator is off.
High indicates that the metal indicator is on (only in tape mode) and a
low indicates that the metal indicator is off.
High indicates that the “APSS” indicator is on (only in tape mode) and
a low indicates that the “APSS” indicator is off.
High indicates that the loudness indicator is on and a low indicates
that the loudness indicator is off.
Audio mute output
The LEDs flash when /HOLD is low. (When LEDSEL is 0.)
Connect to the LC75371M DI pin.
Connect to the LC75371M CLK pin.
Connect to the LC75371M CE pin. Diode matrix source output
Key matrix source output
Key & diode matrix return input
LCD segment output
Note: * See the item on double function key beep output.
Connect directly to
VDD.
Connect directly to
ground.
Open
Open
Open
Open
Open
Open
Open
Open
Connect directly to
ground.
Open
Continued on next page.
No. 4934-8/27
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