LC72348G-9970
No.6633-1/10
Overview
The LC72348G-9970 is a single chip controller designed
for portable stereo applications.
It incorporates an AM / FM PLL tuner covering the frequency
requirements in the USA, Europe, East Europe, and Japan.
A 1/4 duty cycle, 1/2 bias LCD driver is also built in.
Features and Functions
10 station memories in each of three bands:
AM, FM I, FM II
Integrated 1/4 duty cycle, 1/2 bias LCD driver.
On / off switchable clock / alarm function
(2 clock settings).
12/24-hour display switching.
World area switching.
Tape function display.
Remaining battery capacity display.
Mono / stereo switching.
Hold function.
Equipped for AM / FM reception in USA,Europe,
East Europe, and Japan
.
Integrated LPF amplifier.
Tuning voltage generating circuit.
Single 3V power supply.
QIP64G package.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Ordering number : ENN*6633
LC72348G-9970
Portable Stereo Software Specifications
Package Dimensions
unit : mm
3231-QIP64G
[LC72348G-9970]
81000 RM (IM)
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft's
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO : QIP-64G
14.0
17.2
1.0
1.0
1.6
0.15
0.35
0.1
15.6
0.8
0.8
3.0max
1
16
17
32
33
48
49
64
2.15
14.0
17.2
1.0
1.0
1.6
0.8
Preliminary
CMOS IC
LC72348G-9970
No.6633-2/10
1
XOUT
2
TEST2
3
KEYIN3
4
KEYIN2
5
KEYIN1
6
KEYIN0
7
KEYOUT3
8
KEYOUT2
9
KEYOUT1
10
KEYOUT0
11
BAND
12
FM MN/ST
13
NC
14
NC
15
AREA1
16
AREA0
48 COM1
64
XIN
63
TEST1
62
A
GND
61
A
OUT
60
AIN
59
EO
58
VSS
57
AMIN
56
FMIN
55
VDD
54
TU
53
RES
52
DBR1
51
DBR2
50
DBR3
49
DBR4
17
T
APE
18
NC
19
NC
20
B
UZZER
21
PWR CHECK2
22
PWR CHECK3
23
STEREO
24
VSS
25
PO
WER
26
HOLD
27
MUTE
28
TUNER OUT
29
SD IN
30
S15
31
S14
32
S13
47 COM2
46 COM3
45 COM4
44 S1
43 S2
42 S3
41 S4
40 S5
39 S6
38 S7
37 S8
36 S9
35 S10
34 S11
33 S12
Top view
LC72348G--9970
ILC00004
Pin Assignment
LC72348G-9970
No.6633-3/10
Pin Function
No.
Pin name
Designation
I / O
Function description
Logical
Logical
Initial
Remarks
"High"
"Low"
state
1
XOUT
XOUT
OUT
Quartz output
2
TEST2
TEST2
IN
Connect to GND
3
PA3
KEYIN3
IN
Key input
Key
Key not
Pull-down
pressed
pressed
enabled
4
PA2
KEYIN2
IN
Key input
Key
Key not
Pull-down
pressed
pressed
enabled
5
PA1
KEYIN1
IN
Key input
Key
Key not
Pull-down
pressed
pressed
enabled
6
PA0
KEYIN0
IN
Key input
Key
Key not
Pull-down
pressed
pressed
enabled
7
PB3
KEYOUT3
OUT
Key output
Scan
Standby
"Low"
8
PB2
KEYOUT2
OUT
Key output
Scan
Standby
"Low"
9
PB1
KEYOUT1
OUT
Key output
Scan
Standby
"Low"
10
PB0
KEYOUT0
OUT
Key output
Scan
Standby
"Low"
11
PC3
BAND
OUT
Band output
FM band
AM band
"Low"
12
PC2
FM MN / ST
OUT
FM MN / ST
FM Stereo
FM Mono
"Low"
FM MN / ST
(mono / stereo) output
key state
13
PC1
NC
OUT
OPEN
14
PC0
NC
OUT
OPEN
15
PD3
AREA1
IN
See information on
*1
16
PD2
AREA0
IN
Destination area input
input combinations
*1
given on next page
17
PD1
TAPE
IN
TAPE input
See next page
*2 No chattering
18
PD0 / INT
NC
OUT
OPEN
19
PE1
NC
OUT
OPEN
20
PE0 / BEEP
BUZZER
OUT
Beep output
Normal "Hi", 2 beep
"Hi"
types
21
PF2
PWR CHECK2
IN
Backup input
Normal
Backup
Pull-down
enabled
22
PF1 / ADI1
PWR CHECK3
IN
Power check input
*3 ADC input
(A / D)
select
23
PF0 / ADI0
STEREO
IN
STEREO input
See next page
*4 No chattering
24
VSS
VSS
Ground pin
25
S20 / PG3
POWER
OUT
Power output
Power off
Power on
"Hi"
26
S19 / PG2
HOLD
IN
HOLD key input
HOLD off
HOLD on
No chattering
27
S18 / PG1
MUTE
OUT
Muting output
Muting on
Muting off
"Low"
28
S17 / PG0
TUNER OUT
OUT
Tape / radio switching
Tape mode
Radio mode
"Hi"
output
29
S16 / PH3
SD IN
IN
SD input
SD not
SD
Chattering 20 --
pressed
pressed
30 ms
30
S15 / PH2
S15
OUT
Segment output
31
S14 / PH1
S14
OUT
Segment output
32
S13 / PH0
S13
OUT
Segment output
33
S12
S12
OUT
Segment output
34
S11
S11
OUT
Segment output
35
S10
S10
OUT
Segment output
36
S9
S9
OUT
Segment output
37
S8
S8
OUT
Segment output
38
S7
S7
OUT
Segment output
39
S6
S6
OUT
Segment output
40
S5
S5
OUT
Segment output
41
S4
S4
OUT
Segment output
42
S3
S3
OUT
Segment output
43
S2
S2
OUT
Segment output
44
S1
S1
OUT
Segment output
45
COM4
COM4
OUT
Common output
LC72348G-9970
No.6633-4/10
No.
Pin name
Designation
I / O
Function description
Logical
Logical
Initial
Remarks
"High"
"Low"
state
46
COM3
COM3
OUT
Common output
47
COM2
COM2
OUT
Common output
48
COM1
COM1
OUT
Common output
49
DBR4
DBR4
OUT
LCD power supply
step-up pin
50
DBR3
DBR3
OUT
LCD power supply
step-up pin
51
DBR2
DBR2
OUT
LCD power supply
step-up pin
52
DBR1
DBR1
OUT
LCD power supply
step-up pin
53
RES
RES
IN
Reset input
54
TU
TU
OUT
Tuning voltage generating circuit output
55
VDD
VDD
+3V power supply
56
FMIN
FMIN
IN
FM input
57
AMIN
AMIN
IN
AM input
58
VSS
VSS
Ground pin
59
E0
E0
OUT
Error output
60
AIN
AIN
IN
Low-pass filter input
61
AOUT
AOUT
OUT
Low-pass filter output
62
AGND
AGND
Connect to GND
63
TEST1
TEST1
IN
Connect to GND
64
XIN
XIN
IN
Quartz input
*1 : PD3 (AREA 1), PD2 (AREA 0) inputs
PD3
PD2
Destination area
Hi
Low
USA
Low
Hi
Europe
Low
Low
East Europe
Hi
Hi
Japan
*2 : PD1 (TAPE) input
Tuner off changes the following functions
Condition
PD1
State (display)
Tuner off
Hi
Tape mode ("TAPE" displayed)
(TAPE input)
Low
Power off (clock display)
*3 : PF1 / ADI1 (PWR CHECK 3) input
A/D value and operation status are shown below. A/D is read only at power-on.
Input voltage
Detection method
P-FUL
P-MID
P-LOW
Operation state
A / D input value
--2.64V
PF1(A / D)
Lit
Lit
Lit
Normal
00h-0Eh
2.45V--2.10V
PF1(A / D)
Out
Lit
Lit
Normal
0Fh-10h
2.09V--1.81V
PF1(A / D)
Out
Out
Flashing
Normal
11h-15h
1.80V--
PF1(A / D)
Out
Out
Out
Transition to
16h-1Fh
radio off
PF2
Out
Out
Out
Backup mode
*4: PF0 / ADI0 (STEREO) input
PF0 input switches functions as shown below during Tuner ON.
Condition
PF0
State (display)
Tuner ON
Hi
"FM ST" flashing (when FM band tuning only)
(FM ST input)
Low
"FM ST" lit (when FM band tuning only)
LC72348G-9970
No.6633-5/10
Key Operation Description
Key
Operation Description
Tuner mode
- Frequency changes upwards by one step when a key is depressed for less than 0.5 second and released. In this case,
a 3.125 kHz buzzer is output.
- Keeping the key depressed for more than 0.5 second changes frequency upwards by one step every 100 ms.
- At the band edge (changeover from maximum frequency to minimum frequency), there is a 500 ms wait.
Tape mode
Up / Hour
- Key is inoperative.
Clock setting mode
- During clock 1 and 2 setting, hour indication changes upwards by one step with each push. Keeping the key depressed for more than
0.5 seconds causes a change by one step every 250 ms, until the key is released.
Alarm setting mode
- During alarm setting, hour indication changes upwards by one step with each push. Keeping the key depressed for more than 0.5
seconds causes a change by one step every 250 ms, until the key is released.
Tuner mode
- Frequency changes downwards by one step when a key is depressed for less than 0.5 second and released. In this case,
a 3.125 kHz buzzer is output.
- Keeping the key depressed for more than 0.5 second changes frequency downwards by one step every 100 ms.
- At the band edge (changeover from minimum frequency to maximum frequency), there is a 500 ms wait.
Tape mode
Down / Min
- Key is inoperative.
Clock setting mode
- During clock 1 and 2 setting, minute indication changes upwards by one step with each push. Keeping the key depressed for more than
0.5 seconds causes a change by one step every 150 ms, until the key is released.
Alarm setting mode
- During alarm setting, hour indication changes upwards by one step with each push. Keeping the key depressed for more than 0.5
seconds causes a change by one step every 150 ms, until the key is released.
Tuner mode
- Serve for preset station recall and store.
- Pressing a key and releasing it within less than 2 seconds calls up the frequency stored in the corresponding preset number (1 -- 10).
Keeping a key depressed for 2 seconds or more writes the currently received frequency to the corresponding preset number (1 -- 10).
- For information on switching between presets 1 -- 5 and 6 -- 10, see the Memo+ key section.
- When recall or store is confirmed, a 1.56 kHz beep corresponding to the preset number is output.
Tape mode
- Keys are inoperative.
Power off mode
- Keeping a key depressed for more than 500 seconds calls up the corresponding clock display for Memo1 or Memo2.
Memo 1
Memo 2
Memo 3
Memo 4
Memo 5
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