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PRODUCT INFORMATION
Vol. 77
8-Bit Microcontroller with On-Chip Flash Memory Developed LCD controller/driver built in
LC87F72C8A
Overview
Sanyo's flash memory products feature single-voltage power supply operation and the ability to erase data in small block units. Since a split-gate flash memory technology is used, these product achieve high reliability and do not require an over-erasure prevention function. Sanyo is aggressively expanding its product line of flash microcontrollers, i.e. microcontrollers that include on-chip flash memory, based on this process technology. Compared to the earlier mask ROM microcontroller, flash microcontrollers provide superlative characteristics for reducing development times and achieving improvements in end-product manufacturing start up and product maintenance. First, during product development, flash microcontrollers allow application software to be debugged through the day before mass production starts, thus providing a significant reduction in the turnaround time required with the earlier mask ROM microcontroller. Another advantage is that during production start up end product specifications can be easily modified if the specifications change frequently or to meet the needs of different customers by using an EPROM writer or the on-board programming functions provided by flash microcontrollers. Additionally, flash microcontrollers contribute to improved end-product maintenance, since the onboard programming function can be used to correct software problems discovered after the product was shipped and to provide software upgrades for functional improvements. Sanyo has developed a product line of flash microcontrollers designed for the multimedia equipment applications that can take advantage of the features of flash memory. These microcontrollers include products designed for use in IC cards, products for a wide range of data storage equipment control applications, and products that can directly drive fluorescent display tubes for use in consumer products. As a part of Sanyo's ongoing efforts at strengthening this product line, Sanyo has now developed the LC87F72C8A flash microcontroller. This microcontroller features an on-chip LCD controller/driver and is designed for control of home appliances. The LC87F72C8A features the industry's largest on-chip flash memory (128KB) in an 8-bit LCD microcontroller, and allows this memory to be rewritten in 128-byte units. The LCD controller/driver circuit includes an LCD drive voltage generation circuit and a clock divider circuit for the LCD system, and thus allows the number of external components in end products to be reduced. Although this
SANYO Electric Co., Ltd. Semiconductor Company Overseas Marketing Division
TOKYO OFFICE: Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN 1
PRODUCT INFORMATION
device will first be marketed as a direct replacement for one-time programmable (OTP) microcontrollers (i.e. microcontrollers with on-chip EPROM), Sanyo expects that with increasing sales volume and improvements in manufacturing technology, it will become possible to position this product as a replacement for the corresponding mask ROM microcontroller in the future.
Features
* 128KB on-chip flash memory * Memory can be erased in 128-byte blocks. * Built-in LCD controller/driver * On-board memory rewrite function * 5-V single-voltage power supply operation guaranteed
Specifications
* Sanyo originally designed 8-bit CPU core * Program ROM: 128KB * RAM: 2048 bytes * Synchronous/asynchronous serial interface * Synchronous serial interface with automatic data transfer function * Two 16-bit timers and clock time base timer * High-speed pulse counter (up to 20 MHz) * Built-in 12-input 8-bit A/D converter * Package: QFP100, SQFP100
SANYO Electric Co., Ltd. Semiconductor Company Overseas Marketing Division
2
PRODUCT INFORMATION
Sample Availability
Sample of the LC87F72C8A will be available in April 1999; production quantities will be anticipated in the end of 1999.
MARCH 25, 1999
s 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. s 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. s Specifications of any and all SANYO products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment. s SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. s In the event that any or all SANYO products (including technical data, services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining the export license from the authorities concerned in accordance with the above law. s No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written permission of SANYO Electric Co., Ltd. s Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO product that you intend to use. s Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties.
SANYO Electric Co., Ltd. Semiconductor Company Overseas Marketing Division
PS 40799/77
3

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