A43E06321 Datasheet, PDF(15/46 Page) AMIC Technology – 512K X 32 Bit X 2 Banks Low Power Synchronous DRAM

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A43E06321 Datasheet, PDF (15/46 Pages) AMIC Technology – 512K X 32 Bit X 2 Banks Low Power Synchronous DRAM

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Basic feature And Function Descriptions

1. CLOCK Suspend

A43E06321

1) Click Suspended During Write (BL=4)

CLK

CMD

CKE

Internal

CLK

Masked by CKE

DQ(CL2)

DQ(CL3)

Not Written

2) Clock Suspended During Read (BL=4)

Masked by CKE

Suspended Dout

Note: CLK to CLK disable/enable=1 clock

2. DQM Operation

1) Write Mask (BL=4)

CLK

CMD

DQM

DQ(CL2)

DQ(CL3)

Masked by CKE

DQM to Data-in Mask = 0CLK

2) Read Mask (BL=4)

CLK

CMD

CKE

DQM

DQ(CL2)

DQ(CL3)

Hi-Z

2) Read Mask (BL=4)

Masked by CKE

Hi-Z

DQM to Data-out Mask = 2

Hi-Z

* Note : 1. DQM makes data out Hi-Z after 2 clocks which should masked by CKE âLâ.

2. DQM masks both data-in and data-out.

PRELIMINARY (July, 2005, Version 0.0)

AMIC Technology, Corp.

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