GPLB30B

© Generalplus Technology Inc.

Proprietary & Confidential

2

Apr. 16, 2009

Version: 1.1

Table of Contents

PAGE

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

2. BLOCK DIAGRAM ...................................................................................................................................................................................... 3

3. FEATURES .................................................................................................................................................................................................. 3

4. APPICATION FIELD.................................................................................................................................................................................... 4

5. SIGNAL DESCRIPTIONS............................................................................................................................................................................ 4

5.1. PAD ASSIGNMENT ................................................................................................................................................................................. 5

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

6.1. MEMORIES ............................................................................................................................................................................................ 6

6.2. MAP OF MEMORY AND I/OS .................................................................................................................................................................... 6

6.3. OPERATING STATES ............................................................................................................................................................................... 6

6.3.1. Operating mode ........................................................................................................................................................................ 6

6.3.2. Standby mode ........................................................................................................................................................................... 6

6.3.3. Halt mode.................................................................................................................................................................................. 6

6.4. LCD CONTROLLER/DRIVER.................................................................................................................................................................... 7

6.5. LCD VOLTAGE GENERATOR ................................................................................................................................................................... 7

6.6. LOW VOLTAGE RESET ............................................................................................................................................................................ 7

6.7. WATCHDOG TIMER (WDT) ..................................................................................................................................................................... 7

6.8. MASK OPTIONS...................................................................................................................................................................................... 7

6.8.1. 32768 oscillator......................................................................................................................................................................... 7

6.8.2. Watchdog timer ......................................................................................................................................................................... 7

6.8.3. PC[0:7]/SEG[39:32] .................................................................................................................................................................. 7

6.8.4. Rosc32k select.......................................................................................................................................................................... 7

6.8.5. System ROSC select ................................................................................................................................................................... 7

6.8.6. Low voltage reset ...................................................................................................................................................................... 7

7. ELECTRICAL SPECIFICATIONS ............................................................................................................................................................... 8

7.1. ABSOLUTE MAXIMUM RATINGS ............................................................................................................................................................... 8

7.2. DC CHARACTERISTICS........................................................................................................................................................................... 8

7.3. THE RELATIONSHIPS BETWEEN THE FOSC AND THE ROSC........................................................................................................................... 9

7.4. THE RELATIONSHIPS BETWEEN THE FOSC AND THE VDD .......................................................................................................................... 9

7.5. THE RELATIONSHIPS BETWEEN THE FOSC32K AND THE ROSC32K.................................................................................................................... 9

7.6. THE RELATIONSHIPS BETWEEN THE FOSC32K AND THE VDD ...................................................................................................................... 9

8. APPLICATION CIRCUITS ......................................................................................................................................................................... 10

8.1. 512 DOTS LCD DRIVER, 32 SEGMENTS × 16 COMMONS, 1/5 BIAS, 56 KEYS + ON/OFF KEY, INTERNAL ROSC - (1)................................ 10

8.2. 640 DOTS LCD DRIVER, 40 SEGMENTS × 16 COMMONS, 1/5 BIAS, 96 KEYS, XTAL + EXTERNAL ROSC - (2)..........................................11

9. PACKAGE/PAD LOCATIONS ................................................................................................................................................................... 12

9.1. ORDERING INFORMATION ..................................................................................................................................................................... 12

10. DISCLAIMER............................................................................................................................................................................................. 13

11. REVISION HISTORY ................................................................................................................................................................................. 14