EDS1232AATA-75-E 参数 Datasheet PDF下载

EDS1232AATA

Command Operation

Mode register set command (/CS, /RAS, /CAS, /WE)

The Synchronous DRAM has a mode register that defines how the device operates. In this command, A0 through

A11 are the data input pins. After power on, the mode register set command must be executed to initialize the

device. The mode register can be set only when all banks are in idle state. During 2CLK (tRSC) following this

command, the Synchronous DRAM cannot accept any other commands.

CLK

CKE

/CS

/RAS

/CAS

/WE

BA0, BA1

(Bank select)

H

A10

Add

Mode Register Set Command

Activate command (/CS, /RAS = Low, /CAS, /WE = High)

The Synchronous DRAM has four banks, each with 4,096 rows. This command activates the bank selected by BA0

and BA1 and a row address selected by A0 through A11. This command corresponds to a conventional DRAM's

/RAS falling.

CLK

CKE

/CS

/RAS

/CAS

/WE

BA0, BA1

(Bank select)

H

A10

Add

Row

Row

Row Address Strobe and Bank Activate Command

Data Sheet E0386E40 (Ver. 4.0)

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