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PDF LC723482W Data sheet ( Hoja de datos )
| Número de pieza | LC723482W | |
| Descripción | (LC723481W - LC723483W) Low-Voltage ETR-Controller | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LC723482W (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
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Ordering number : ENN7253
CMOS IC
LC723481W,723482W,723483W
Low-Voltage ETR-Controller
Overview
The LC723481W, 723482W, and 723483W are low-
voltage electronic tuning radio microcontrollers that
include a PLL that operates up to 250 MHz and a 1/4 duty
1/2 bias LCD driver on chip. These ICs include an on-chip
DC-DC converter, making it is easy to create the supply
voltages required for tuning and allowing cost reductions
in end products.
These ICs are optimal for use in low-voltage portable
audio equipment that includes a radio receiver.
Package Dimensions
unit: mm
3190A-SQFP64
[LC723481W/2W/3W]
12.0
10.0
48 33
49 32
Function
• Program memory (ROM):
— 2048 × 16 bits (4K bytes)
— 3072 × 16 bits (6K bytes)
— 4096 × 16 bits (8K bytes)
LC723481W
LC723482W
LC723483W
• Data memory (RAM):
— 128 × 4 bits
— 192 × 4 bits
— 256 × 4 bits
LC723481W
LC723482W
LC723483W
• Cycle time: 40 µs (all 1-word instructions) at 75kHz
crystal oscillation
• Stack: 4 levels (8 levels)
LC723481W(LC723482W/3W)
• LCD driver: 48 to 80 segments (1/4 duty, 1/2 bias drive)
• Interrupts: One external interrupt
Timer interrupts (1, 5, 10, and 50 ms)
• A/D converter: Three input channels
(5-bit successive approximation
conversion)
• Input ports: 7 ports (of which 3 can be switched for use
as A/D converter inputs)
• Output ports: 6 ports (of which 1 can be switched for use
as the beep tone output and 2 are open-
drain ports)
Continued on next page.
64
1
(1.25)
(0.5)
16
0.18
17
0.15
SANYO: SQFP64
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
N2002RM (OT) No. 7253-1/15
1 page  
LC723481W/2W/3W
Note: * C(1), C(2), and C(3) must be connected even if an LCD is not used.
0.1 to 1 µF
C(C1)
0.1 to 1 µF
0.1 to 1 µF
C(C2)
C(C3)
DBR1
DBR2
DBR3
DBR4
Notes: *1. The capacitors C(1), C(2), and C(3) must be connected to the DBR pins.
*2. Halt mode current measurement circuit
*3. Backup mode current measurement circuit
7 pF
A
75 kHz
XOUT VDD BRESDBR1
XIN
7pF
DBR2
DBR3
FMIN
AMIN
HCTR
TEST1, 2
DBR4
VSS
PA, PF
AIN
0.1 µF
0.1 µF
0.1 µF
7 pF
A
75 kHz
XOUT VDD BRES DBR1
XIN
7pF
DBR2
DBR3
FMIN
AMIN
HCTR
TEST1, 2
DBR4
VSS
AIN
0.1 µF
0.1 µF
0.1 µF
With all ports other than those specified above left open.
With output mode selected for PC and PD.
With segments S13 to S20 selected.
With all ports other than those specified above left open.
With output mode selected for PC and PD.
With segments S13 to S20 selected.
No. 7253-5/15
5 Page 
LC723481W/2W/3W
Sample Application for Tuning Voltage
Generation Circuit
Sample Application for Low-Pass Filter
Amplifier
XIN
64
XOUT
1
75k Hz
VDD
56
FMIN
57
1/256
Mask
option
FM T
AMIN
58 1/2 to 1/16
AM T
49
RADIO ON
Varactor
TU+B
EO
60
AIN
63
AOUT
62
LC723481 DC-DC converter load = 100 kW (When VDD = 1.8 V)
12 Clock frequency during
FM reception
Clock frequency range
(When 75 kHz is selected) during AM reception
10
8
6 220µH
180µH
150µH
4 100µH
2
0
1 100 1000 10000
Clock frequency - kHz
No. 7253-11/15
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet LC723482W.PDF ] | |
Hoja de datos destacado
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