Sanyo LC7234 Specifications
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.
CMOS IC
Single-chip PLL and Microcontroller
with LCD Driver
Ordering number:ENN3620C
LC7234
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Overview
The LC7234 is a single-chip microcontroller that incorporates a 0.5 to 150MHz phase-locked loop (PLL) and a liquid-crystal display (LCD) driver, making it ideal for digital tuners. It has a large number of input/output ports and a
frequency measurement circuit.
The LC7234 freatures on-chip RAM and ROM, a programmable high-speed divider, a 6-bit analog-to-digital con v erter
and a low-voltage detection reset circuit.
The LC7234 operates from a 5V supply and is available in
64-pin QIPs.
Features
• 150 MHz phase-locked loop.
• LCD driver.
• 6-bit analog-to-digital converter.
• Two 4-bit input ports.
• Two 4-bit input/output ports.
• 6-bit keypad matrix scan output port.
• 2-bit open-drain high-voltage output port.
• 23 mask-selectable output drivers.
• 20-bit universal counter.
• 2048 × 16-bit program ROM (001H to 7FFH user-ad-
dressable memory).
• 256 × 4-bit data RAM.
• Low-voltage detection reset circuit.
• Programmable high-speed divider.
• Single-word instructions.
• Four-level stack.
• PLL-unlocked flip-flop.
• Timer flip-flop.
• Programmable watchdog interrupt address.
• Standby mode.
• CPU operates down to 3.5V and retains data retention
down to 1.3V.
• 5V supply.
• 64-pin QIP.
Package Dimensions
unit:mm
3159-QIP64E
[LC7234]
17.2
14.0
0.8
0.35
15.6
17.2
1.6
14.0
1.0
48
1.0
49
0.8
64
1.0
1
Pin Assignment
1.6
1.0
33
32
17
16
0.8
SANYO : QIP64E
3.0max
0.15
0.1
2.7
Top view
80101TN (KT)/5182JN/7011JN/5151JN/O290JN No.3620–1/12
Block Diagram
LC7234
No.3620–2/12
Pin Function
rebmuNemaNtiucrictnelaviuqEnoitpircseD
1NIX
46TUOX
LC7234
snoitcennocrotallicsolatsyrC
22TSET
361TSET
6ot30GPot3GPGtroptupnI
8,70HP,1HPHtroptuptuO
21ot90FPot3FP Ftroptuptuo/tupnI
61ot310EPot3EP Etroptuptuo/tupnI
sniptseT
81,710CP,1CPCtroptuptuO
22ot910BPot3BPBtroptuptuO
62ot320APot3APAtroptupnI
94ot721Sot32S stuptuotnemgesDCL
Continued on next page.
No.3620–3/12
Continued from preceding page.
rebmuNemaNtiucrictnelaviuqEnoitpircseD
15,051MOC,2MOC stuptuorevirdnommocDCL
25DLOH tupnilortnocedom-dloH
55SNStcetedliaf-rewoP
35IDAtupniretrevnocD/A
LC7234
45RTCH tupniretnuoclasravinU
65V
75NIMFtupniOCVMF
85NIMAtupniOCVMA
95V
06OE tuptuorotarapmocesahP
16NIAtupnigolanA
DD
SS
ylppusV5
dnuorG
26TUOAtuptuogolanA
No.3620–4/12
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