GPL191B2

© Generalplus Technology Inc.

Proprietary & Confidential

2

Mar. 08, 2010

Version: 1.1

Table of Contents

PAGE

1. GENERAL DESCRIPTION .......................................................................................................................................................................... 3

2. FEATURES.................................................................................................................................................................................................. 3

3. APPICATION FIELD.................................................................................................................................................................................... 3

4. BLOCK DIAGRAM ...................................................................................................................................................................................... 4

5. SIGNAL DESCRIPTIONS............................................................................................................................................................................ 5

5.1. PAD ASSIGNMENT ................................................................................................................................................................................. 6

6. FUNCTIONAL DESCRIPTIONS.................................................................................................................................................................. 7

6.1. ROM AREA ........................................................................................................................................................................................... 7

6.2. MAP OF MEMORY AND I/OS .................................................................................................................................................................... 7

6.3. OPERATING STATES ............................................................................................................................................................................... 7

6.4. SPEECH AND MELODY............................................................................................................................................................................ 7

6.5. LCD CONTROLLER/DRIVER.................................................................................................................................................................... 8

6.6. VOLTAGE DOUBLER/REGULATOR ............................................................................................................................................................ 8

6.7. PWM OUTPUT....................................................................................................................................................................................... 8

6.8. ASYNCHRONOUS SERIAL INTERFACE (UART) ......................................................................................................................................... 8

6.9. LOW VOLTAGE DETECTION ..................................................................................................................................................................... 8

6.10.WATCHDOG TIMER (WDT) ..................................................................................................................................................................... 9

6.11.MASK OPTIONS...................................................................................................................................................................................... 9

7. ELECTRICAL SPECIFICATIONS ............................................................................................................................................................. 10

7.1. ABSOLUTE MAXIMUM RATINGS ............................................................................................................................................................. 10

7.2. DC CHARACTERISTICS......................................................................................................................................................................... 10

7.3. THE RELATIONSHIP BETWEEN THE ROSC AND THE FCPU............................................................................................................................11

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7.4. THE RELATIONSHIP BETWEEN THE R32K AND THE F32K .............................................................................................................................11

7.5. THE RELATIONSHIP BETWEEN THE VDD AND THE FREQUENCY................................................................................................................11

8. APPLICATION CIRCUITS ......................................................................................................................................................................... 12

8.1. 960 POINTS LCD DRIVER, 60 SEGMENTS × 16 COMMONS .................................................................................................................... 12

8.2. 1024 POINTS LCD DRIVER, 64 SEGMENTS × 16 COMMONS .................................................................................................................. 13

8.3. LCD IN 1/8 DUTY OR 1/12 DUTY, IOAB7 - 0, IOCD3 - 0, IOEF5 - 0 ....................................................................................................... 14

8.4. 32K FREQUENCY OPTION CONNECTION ............................................................................................................................................... 15

8.5. SERIAL COMMUNICATIONS BETWEEN TWO GPL191B2S ........................................................................................................................ 15

8.6. POWER-GROUND LAYOUT ILLUSTRATION .............................................................................................................................................. 15

9. PACKAGE/PAD LOCATIONS ................................................................................................................................................................... 16

9.1. ORDERING INFORMATION ..................................................................................................................................................................... 16

10. DISCLAIMER............................................................................................................................................................................................. 17

11. REVISION HISTORY ................................................................................................................................................................................. 18