eorex

EM488M1644VTF

Jan. 2011

www.eorex.com

128Mb (2M

Features

• Fully Synchronous to Positive Clock Edge

• Single 3.3V

±0.3V Power Supply

• LVTTL Compatible with Multiplexed Address

• Programmable Burst Length (B/L) - 1, 2, 4, 8

or Full Page

• Programmable CAS Latency (C/L) - 2 or 3

• Data Mask (DQM) for Read / Write Masking

• Programmable Wrap Sequence

– Sequential (B/L = 1/2/4/8/full Page)

– Interleave (B/L = 1/2/4/8)

• Burst Read with Single-bit Write Operation

• All Inputs are sampled at the Rising Edge of the

System Clock

• Auto Refresh and Self Refresh

• 4,096 Refresh Cycles / 64ms (15.6us)

Description

The EM488M1644VTF is Synchronous Dynamic

Random Access Memory (SDRAM) organized as

2Meg words x 4 banks by 16 bits. All inputs and

outputs are synchronized with the positive edge of

the clock.

The 128Mb SDRAM uses synchronized pipelined

architecture to achieve high speed data transfer

rates and is designed to operate at 3.3V low power

memory system. It also provides auto refresh with

power saving / down mode. All inputs and outputs

voltage levels are compatible with LVTTL.

EM488M1644VTF is available in TSOPII 54Pin

package.

Ordering Information

Part No

Organization

Max. Freq

Package

Grade

Pb

EM488M1644VTF-7F

8M X 16

143MHz @CL3

54pin TSOPll

Commercial

Free

EM488M1644VTF-6F

8M X 16

166MHz @CL3

54pin TSOPll

Commercial

Free

EM488M1644VTF-7FE

8M X 16

143MHz @CL3

54pin TSOPll

Extended

Free

EM488M1644VTF-6FE

8M X 16

166MHz @CL3

54pin TSOPll

Extended

Free

* EOREX reserves the right to change products or specification without notice.

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