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PDF LC7234-8460 Data sheet ( Hoja de datos )
| Número de pieza | LC7234-8460 | |
| Descripción | Single-chip PLL and Microcontroller | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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Ordering number:ENN*4350
CMOS IC
LC7234-8460
Single-chip PLL and Microcontroller
with LCD Driver
Preliminary
Overview
The LC7234-8460 is a single-chip microcontroller that in-
corporates a phase-locked loop (PLL) and a liquid crystal
display driver.
The LC7234-8460 operates over the American, European,
Chinese, Middle Eastern, Canadian and Australian LW,
MW, SW and FM bands, and incorporates preset-channel
memory, automatic or manual tuning, high-speed station
search, and clock and timer functions.
The LC7234-8460 operates from a 5 V supply and is avail-
able in 64-pin QIPs.
Package Dimensions
unit:mm
3159-QIP64E
1.0
48
49
[LC7234-8460]
17.2
14.0 1.6
0.8 0.35 1.0
33
32
0.15
Features
17
• Operates over the LW, MW, SW1, SW2 and FM bands.
• Three selectable preset memory configurations.
64
1
16 0.1
2.7
• Automatic tuning or manual preset memory scan.
• High-speed station search.
FM band: 60 ms per step.
15.6 0.8
SANYO : QIP64E
AM band: 70 ms per step.
• Clock function.
Pin Assignment
• ON, OFF and SLEEP timer functions.
• Logic-level and momentary switch band select inputs.
• LCD display with wide viewing angle and high contrast
over a wide operating temperature range.
• On-chip amplifier for external lowpass filter.
• External RC network for reset not required.
• Forced mono mode.
• High signal-to-noise ratio.
• Single 5 V supply.
• 64-pin QIPs.
Top view
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 Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
O1501TN (KT)/32693JN No.4350–1/23
1 page  
LC7234-8460
Functional Description
Band Coverage
Region
China
United States 1
United States 2
Europe
Middle East
Common 1
Common 2
Canada, Australia
World
Band
FM
MWa
MWb
SW1
SW2
FM
MWa
MWb
FM
MWa
MWb
FM
MWa
MWb
LW
FM
MWa
MWb
SW1
SW2
FM
MWa
MWb
SWA
FM
MWa
MWb
SWB
FM
MWa
MWb
FM
MWa
MWb
LW
SWB
Frequency range
[FM, SW (MHz) AM (kHz)]
87.0 to 108.0
531 to 1602
522 to 1611
2.28 to 6.23
7.1 to 21.85
87.5 to 107.9
531 to 1602
530 to 1710
87.5 to 108.0
531 to 1602
530 to 1710
87.5 to 108.0
531 to 1602
522 to 1611
146 to 281
87.5 to 108.0
531 to 1602
522 to 1611
2.28 to 6.23
7.1 to 21.85
87.5 to 108.0
531 to 1602
531 to 1602
5.95 to 15.6
87.5 to 108.0
531 to 1602
522 to 1611
3.8 to 12.5
87.5 to 108.0
531 to 1602
522 to 1611
87.5 to 108.0
531 to 1602
522 to 1611
146 to 281
3.8 to 12.5
Frequency step
(kHz)
100/50
9
9
5
5
200
9
10
100
9
10
100/50
9
9
1
100/50
9
9
5
5
100/50
9
9
5
100/50
9
9
5
100/50
9
9
100/50
9
9
1
5
Comparison
frequency (kHz)
25
9
9
5
5
50
9
10
50
9
10
25
9
9
1
25
9
9
5
5
25
9
9
5
25
9
9
5
25
9
9
25
9
9
1
5
Center frequency
[FM (MHz) AM (kHz)]
10.7
450/468
450/468
450
450
10.7
450/468
450
10.7
450/468
450
10.7
450/468
450/468
450/468
10.7
450/468
450/468
450
450
10.7
450/468
450/468
450
10.7
450/468
450/468
450
10.7
450/468
450/468
10.7
450/468
450/468
450/468
450
B2 B1 B0
000
001
010
100
011
101
110
111
WORLD = 1
Band Selection
When SELBND is 0, BAND0 and BAND1 select the
frequency band as shown in the following table. When
BAND1
BAND0
U.S.A., Canada,
Australia
Europe
00
FM
FM
01
(FM)
LW
10
AM
MW
11
(FM)
(FM)
SELBND is 1, the BAND, FM, MW, LW and SW keys
select the frequency band.
Middle East,
China
FM
Common 1
FM
Common 2
FM
World
FM
SW1
(FM)
(FM)
LW
MW MW MW MW
SW2
SWA
SWB
SWB
The frequency band selection determines the logic levels
of FM/AM, M/S(L), SW and FM as shown in the follow-
ing table.
BAND
FM/AM
Pin name
M/S(L)
SW
FM
FM
HIGH
LOW
LOW
LOW
MW
LOW
HIGH
LOW
HIGH
SW1(LW)
LOW
LOW
LOW
HIGH
SW2
LOW
LOW
HIGH
HIGH
Preset Memory Channels
Preset memory values
PSCH2 PSCH1
00
01
10
11
Number of frequency bands
FM MW SW1/LW SW2
8888
5555
16 8 8 8
Illegal
No.4350–5/23
5 Page 
LC7234-8460
Continued from preceding page.
Region
Common 1
Common 2
Canada, Australia
World
Band
FM
MWa
MWb
SWA
FM
MWa
MWb
SWB
FM
MWa
MWb
FM
MWa
MWb
LW
SWB
CH1
87.5
531
522
5.95
87.5
531
522
3.8
87.5
531
522
87.5
531
522
146
3.8
CH2
90.0
603
603
6.2
90.0
603
603
5.00
90.0
603
603
90.0
603
603
164
5.00
Channel
CH3
CH4
98.0 106.0
999 1404
999 1404
9.9 13.8
98.0 106.0
999 1404
999 1404
7.1 11.65
98.0 106.0
999 1404
999 1404
98.0 106.0
999 1404
999 1404
209 263
7.1 11.65
CH5 to CH8
87.5
531
522
5.95
87.5
531
522
3.8
87.5
531
522
87.5
531
522
146
3.8
Last channel
87.5
531
522
5.95
87.5
531
522
3.8
87.5
531
522
87.5
531
522
146
3.8
Power-up Status
If momentary switches are connected to the band select
inputs, the lower edge of the FM band is selected on
power-up. If rocker switches are connected, the band is
determined by the input states of BAND1 and BAND0.
On power-up, the MO/ST status is set to mono, the
display indicates the tuning frequency, the clock is set to
12:00 and the timer is set to 10:00.
Timing Diagrams
Automatic Up/down Scanning
Table 1. IF count tolerance
FM 10.7 MHz ±10 kHz
MW 450/468 ±3 kHz
SW 450 ±1.5 kHz
LW 450/468 ±0.6 kHz
Notes
1. When using an IF count, SD is checked twice at 5 ms intervals. If both checks are successful, SD is recognized.
2. When not using an IF count, SD is checked three times at 5 ms intervals. If all three checks are successful, SD is
recognized.
Scanning with UP and DOWN
No.4350–11/23
11 Page | ||
| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet LC7234-8460.PDF ] | |
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