emc643sp16ak Emlsi Inc., emc643sp16ak Datasheet - Page 3

• Manufacturer Part Number: emc643sp16ak
• Description: 4mx16 Bit Cellularram Ad-mux
• Manufacturer: Emlsi Inc.

Table of Contents
Features.............................................................................................................................................................................................. 2
General Description............................................................................................................................................................................ 6
Functional Description........................................................................................................................................................................ 9
Bus Operating Modes......................................................................................................................................................................... 10
Low-Power Operation......... ............................................................................................................................................................... 16
Registers............................................................................................................................................................................................. 17
Electrical Characteristics.................................................................................................................................................................... 30
Timing Requirements.......................................................................................................................................................................... 32
Timing Diagrams................................................................................................................................................................................. 36
Power-Up Initialization.................................................................................................................................................................... 9
Asynchronous Mode....................................................................................................................................................................... 10
Software Access ............................................................................................................................................................................ 21
Options........................................................................................................................................................................................... 2
Mixed-Mode Operation .................................................................................................................................................................. 15
WAIT Operation ............................................................................................................................................................................. 15
Standby Mode Operation ............................................................................................................................................................... 16
Burst Mode Operation.................................................................................................................................................................... 12
LB# / UB# Operation...................................................................................................................................................................... 15
Temperature Compensated Refresh.............................................................................................................................................. 16
Partial Array Refresh ..................................................................................................................................................................... 16
Access Using CRE ........................................................................................................................................................................ 17
Bus Configuration Register............................................................................................................................................................ 23
Refresh Configuration Register...................................................................................................................................................... 28
Device Identification Register......................................................................................................................................................... 29
Burst Length (BCR[2:0]) Default = Continuous Burst ................................................................................................................ 24
Burst Wrap (BCR[3]) Default = No Wrap ................................................................................................................................... 24
Drive Strength (BCR[5:4]) Default = Outputs Use Half-Drive Strength ...................................................................................... 25
WAIT Polarity (BCR[10]) Default = WAIT Active HIGH.............................................................................................................. 26
Initial Access Latency (BCR[14]) Default = Variable.................................................................................................................. 26
Operating Mode (BCR[15]) Default = Asynchronous Operation................................................................................................ 28
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4Mx16 CellularRAM AD-MUX
EMC643SP16AK