97SD3240_06 datasheet(9/39 Pages) MAXWELL

Part #	97SD3240

Description	1.25Gb SDRAM 8-Meg X 40-Bit X 4-Banks

Download	39 Pages

Scroll/Zoom	100%

Manufacturer	MAXWELL [Maxwell Technologies]

Direct Link	http://www.maxwell.com

Logo

9 / 39 page

97SD3240

9

All data sheets are subject to change without notice

1.25Gb (8-Meg X 40-Bit X 4-Banks) SDRAM

05.10.06 Rev 4

Column address strobe and write command (WRIT): This command starts a write operation. When the

burst write mode is selected, the column address (AY0 to AY9) and the bank select address (BA0/BA1)

become the burst write start address. When the single write mode is selected, data is only written to the

location specified by the column address (AY0 to AY9) and bank select address(BA0/BA1).

Write with auto-precharge (WRIT A): This command automatically performs a precharge operation after a

burst write with a length of 1, 2, 4, or 8, or after a single write operation.

Row address strobe and bank activate ( ACTV): This command activates the bank that is selected by

BA0/BA1 (BS) and determines the row address (AX0 to AX12). When BA0 and BA1 are Low, bank 0 is

activated. When BA0 is Low, and BA1 is High, bank 1 is activated. When BA0 is High and BA1 is Low, bank

2 is activated. When BA0 and BA1 are High, bank 3 is activated.

Precharge select bank (PRE): This command starts precharge operation for the bank selected by BA0/

BA1. If BA0 and BA1 are Low, bank 0 is selected. If BA0 is Low and BA1 is High, bank 1 is selected. If BA0

is High and BA1 is Low, bank 2 is selected. If BA0 and BA1 are High, bank 3 is selected.

Precharge all banks (PALL): This command starts a precharge operation for all banks.

Refresh (REF/SELF): This command starts the refresh operation. There are two types of refresh

operations; one is auto-refresh, and the other is self-refresh. For details, refer to the CKE truth table section.

Mode register set (MRS): The SDRAM has a mode register that defines how it operates. The mode register

is specified by the address pins (A0 to A12, BA0 andBA1) at the mode register set cycle. For details, refer to

the mode register configuration. After power on, the contents of the mode register are undefined, execute

the mode register set command to set up the mode register.

Similar Part No. - 97SD3240_06

Manufacturer	Part #	Datasheet	Description
Maxwell Technologies	97SD3240	760Kb / 39P	1.25Gb SDRAM 8-Meg X 40-Bit X 4-Banks
	97SD3248	584Kb / 40P	1.5Gb SDRAM 8-Meg X 48-Bit X 4-Banks
	97SD3248	583Kb / 40P	1.5Gb SDRAM 8-Meg X 48-Bit X 4-Banks
	48SD3208	589Kb / 39P	256 Mb SDRAM 8-Meg X 8-Bit X 4-Banks
Micron Technology	MT48LC16M16A2P-75DTR	3Mb / 86P	SDR SDRAM MT48LC64M4A2 ??16 Meg x 4 x 4 banks MT48LC32M8A2 ??8 Meg x 8 x 4 banks MT48LC16M16A2 ??4 Meg x 16 x 4 banks
	MT41J64M16JT-125G	2Mb / 214P	DDR3 SDRAM MT41J256M4 ??32 Meg x 4 x 8 banks MT41J128M8 ??16 Meg x 8 x 8 banks MT41J64M16 ??8 Meg x 16 x 8 banks
	MT47H64M16HR-25EITH	9Mb / 134P	DDR2 SDRAM MT47H256M4 ??32 Meg x 4 x 8 banks MT47H128M8 ??16 Meg x 8 x 8 banks MT47H64M16 ??8 Meg x 16 x 8 banks
	MT48LC32M16A2P-75ITC	3Mb / 77P	SDR SDRAM MT48LC128M4A2 ??32 Meg x 4 x 4 banks MT48LC64M8A2 ??16 Meg x 8 x 4 banks MT48LC32M16A2 ??8 Meg x 16 x 4 banks
	MT47H64M8CF-25EG	9Mb / 132P	DDR2 SDRAM MT47H128M4 ??32 Meg x 4 x 4 banks MT47H64M8 ??16 Meg x 8 x 4 banks MT47H32M16 ??8 Meg x 16 x 4 banks
Maxwell Technologies	97SD3232	764Kb / 39P	1 Gb SDRAM 8-Meg X 32 Bit X 4-Banks