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Overview
The LC7233N-8818 is a single-chip electronic tuning
microcontroller that supports control of an electronic
tone/volume control IC (the LC7538JMD) and handles
detachable
front
panel
LC75853E/W keyed LCD driver. It is designed for
automotive use and incorporates a PLL-based receiver
that can receive all major worldwide radio transmissions.
products
based
on
the
Features
Supports detachable front panel products. System chips:
LC7233N, LC75853E/W and LC7538JMD
Supports anti-theft LED flashing and reminder to
remove panel alarm functions.
Supports control of an electronic tone/volume control IC
(the LC7538JMD). Functions: bass, treble, balance,
fader
Muting function (with key, out and electronic tone
controls)
Supports two color illumination control (dual systems).
Reduced LCD display output pin count achieved by
operating at 1/3 duty and 1/3 bias drive using the
LC75853E/W.
Up to 36 stations can be stored in preset memory: 6
stations for each band (FM1, FM2, FM3, VF, MW
(MW1) and LW (MW2)). Previous station function also
supported.
Auto preset memory function
Radio monitor output: operates during tape FF/REW.
CD function (with key, in, and out)
Tape function (Flashing direction display supported
when FF and REW signal inputs are provided.)
Rich selection of double function keys for use with tape
players
Tape character display
Supports use of electronic power switch.
Twenty diode matrix settings
Supports radio reception throughout the world.
Supports AM stereo reception in the USA and Japan.
Package Dimensions
unit: mm
3159-QFP64E
Preliminary
Contents
1.
Pin Assignment ........................................................ 2
2.
Electrical Characteristics .......................................... 3
3.
Radio Reception Frequencies ................................... 5
4.
Key Matrix (LC75853E/W),
Diode Matrix (DIMRX)............................................ 6
5.
Pin Functions ............................................................ 7
6.
Diode Matrix (DIMRX) Select ................................ 9
7.
LCD Display Pattern (1/3 duty, 1/3 bias) ............... 11
8.
Display Examples ................................................... 13
9.
Key Functions ........................................................ 15
10. Power Connection .................................................. 26
11. State Transition Diagram ....................................... 26
12. Timing .................................................................... 28
13. Initial States ............................................................ 34
14. Tracking Point Frequency ...................................... 34
SANYO:QIP64E
72895TH (OT) No. 4743-1/36
CMOS LSI
Ordering number : EN
*
4743A
LC7233N-8818
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Single-Chip PLL and Controller with
LCD Driver
[LC7233N-8818]