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AD484M1644VTA-15

64Mb( 4Banks ) Synchronous DRAM

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Ascend Semiconductor Corporation 64Mb SDRAM

64Mb( 4Banks ) Synchronous DRAM

AD484M1644VTA ( 4Mx16 )

Description

The AD484M1644VTA is Synchronous Dynamic Random Access Memory ( SDRAM )

organized as 1,048,756 words x 4 banks x 16 bits. All inputs and outputs are synchronized

with the positive edge of the clock . The 64Mb SDRAM uses synchronized pipelined

architecture to achieve high speed data transfer rates and is designed to operate in 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 .

Features

• Fully synchronous to positive clock edge

• Single 3.3V +/- 0.3V power supply

• LVTTL compatible with multiplexed address

• Industrial temperature available

• Programmable Burst Length ( BL ) - 1,2,4,8 or full page

• Programmable CAS Latency ( CL ) -1, 2 or 3

• Data Mask ( DQM ) for Read/Write masking

• Programmable wrap sequential - Sequential ( BL = 1/2/4/8/full page )

- Interleave ( BL = 1/2/4/8 )

• Burst read with single-bit write operation

• All inputs are sampled at the positive rising edge of the system clock.

• Auto refresh and self refresh

• 4,096 refresh cycles / 64ms

Ordering Information

Part number

AD484M1644VTA -55

Max

Freg.

183MHz

Package

54pins,

TSOPII

Operation Range

Commercial Range : 0℃ ~ 70℃

Power

Standard

Note

AD484M1644VTA -6

167MHz 54pins,

TSOPII

Commercial Range : 0℃ ~ 70℃

Standard

AD484M1644VTA -7

AD484M1644VTA -15

143MHz

66MHz

54pins,

TSOPII

54pins,

TSOPII

Commercial Range : 0℃ ~ 70℃

Standard

Commercial Range : 0℃ ~ 70℃

Standard

CL1

AD484M1644VTA -7L

AD484M1644VTA -8L

AD484M1644VTA -10L

143MHz 54pins,

TSOPII

125MHz 54pins,

TSOPII

100MHz 54pins,

TSOPII

Commercial Range : 0℃ ~ 70℃

Low power

Commercial Range : 0℃ ~ 70℃

Low power

Commercial Range : 0℃ ~ 70℃

Low power

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

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