GPBA01B datasheet(2/29 Pages) GENERALPLUS

2 / 29 page

GPBA01B

Proprietary & Confidential

MAY 28, 2007

Version: 1.1

Table of Contents

PAGE

1. GENERAL DESCRIPTION .......................................................................................................................................................................... 4

2. FEATURES .................................................................................................................................................................................................. 4

3. APPLICATION FIELD.................................................................................................................................................................................. 4

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

4.1. WORK AS MEMORY EXTENDER ............................................................................................................................................................... 4

4.2. WORK AS I/O EXTENDER........................................................................................................................................................................ 4

4.3. GPBA01B BLOCK DIAGRAM .................................................................................................................................................................. 4

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

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

6.1. THE EASIEST SYSTEM............................................................................................................................................................................ 6

6.2. ADDRESS/DATA BUS CONTROL............................................................................................................................................................... 6

6.2.1. Decode table ............................................................................................................................................................................. 6

6.2.2. Timing relations between control signals, AH, AL and data. ..................................................................................................... 6

6.3. EXAMPLE ON ADDRESS MAPPING ........................................................................................................................................................... 7

6.4. ADDRESS MAPPING ON A SYSTEM .......................................................................................................................................................... 7

6.5. DAISY CHAIN ......................................................................................................................................................................................... 8

6.5.1. Example .................................................................................................................................................................................... 8

6.5.2. Configuration............................................................................................................................................................................. 9

6.6. CLOCK DIVIDER ..................................................................................................................................................................................... 9

7. REGISTER DESCRIPTION ....................................................................................................................................................................... 10

7.1. P_00H_BMIBANK ($0000) (W) ........................................................................................................................................................... 10

7.1.1. CFG=3 Example ..................................................................................................................................................................... 10

7.1.2. CFG=6 Example ..................................................................................................................................................................... 10

7.2. P_0DH_BMIVOLUMEID ($000D) (W) .................................................................................................................................................. 10

7.3. P_20H_BEXPORT0 ($0020)(R/W) ..................................................................................................................................................... 10

7.4. P_21H_BEXPORT1 ($0021) (R/W)......................................................................................................................................................11

7.5. P_22H_BEXPORT2 ($0022) (R/W)......................................................................................................................................................11

7.6. P_23H_BEXCONFIG ($0023)(W).........................................................................................................................................................11

7.6.1. Bus extender pin assignment for 8 configurations .................................................................................................................. 12

7.6.2. Memory Mapping Summary with Configuration 2~7 ............................................................................................................... 13

8. STANDBY CONDITION ............................................................................................................................................................................. 14

9. PCB LAYOUT CONSIDERATION ............................................................................................................................................................. 14

10. ELECTRICAL SPECIFICATIONS ............................................................................................................................................................. 15

10.1.ABSOLUTE MAXIMUM RATINGS ............................................................................................................................................................. 15

10.2.DC CHARACTERISTICS (VDD = 2.4V - 5.5V, TA = 0℃ TO 70℃) ............................................................................................................ 15

10.3.AC CHARACTERISTICS (VDD = 2.4V - 5.5V, TA = 0℃ TO 70℃) ............................................................................................................. 16

10.4.READ PORT CYCLE .............................................................................................................................................................................. 17

10.5.READ MEMORY CYCLE......................................................................................................................................................................... 17

10.6.WRITE PORT CYCLE ............................................................................................................................................................................ 18

10.7.WRITE CYCLE...................................................................................................................................................................................... 18

11. APPLICATION CIRCUITS & EXAMPLE PROGRAM................................................................................................................................ 19

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