HY5S5B2BLF-6E Datasheet, PDF(44/54 Page) Hynix Semiconductor

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HY5S5B2BLF-6E Datasheet, PDF (44/54 Pages) Hynix Semiconductor – 256M (8Mx32bit) Mobile SDRAM

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256Mbit (8Mx32bit) Mobile SDR Memory

HY5S5B2BLF(P) Series

MODE REGISTER SET

The mode registers are loaded via the address bits.

BA0 and BA1 are used to select between the Mode Register and the Extended Mode Register. See the Mode Register

description in the register definition section. The MODE REGISTER SET command can only be issued when all banks

are idle and no bursts are in progress, and a subsequent executable command cannot be issued until tMRD is met.

CLK

CKE

H ig h -Z

RAS

CAS

A0 ~ A9

A11

BA0, 1

Code

Don't Care

MODE REGISTER SET COMMAND

Note:

BA0=BA1=Low loads the Mode Register, whereas BA0=Low and BA1=High loads the Extended Mode Register.

CLK

Command

MRS

Address

Code

NOP

tMRD

Valid

Don't Care

Code = Mode Register / Extended Mode Register selection

(BA0, BA1) and op-code (A0 - An)

tMRD DEFINITION

Rev 1.0 / Apr. 2006

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