AS4C64M32MD1-5BIN datasheet(2/43 Pages) ALSC

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AS4C64M32MD1

Confidential

Page 2

V.1.0 Sept. 2014

64M x 32 bit MOBILE DDR Synchronous DRAM (SDRAM)

Confidential

Advanced (Rev. 1.0, Sep. /2014)

Feature

4 banks x 16M x 32 organization

- Two Die-stacked 4 banks x 16M x 16

Data Mask for Write Control (DM)

Four Banks controlled by BA0 & BA1

Programmable CAS Latency: 2, 3

Programmable Wrap Sequence: Sequential

or Interleave

Programmable Burst Length:

2, 4, 8, for Sequential Type

2, 4, 8, for Interleave Type

Automatic and Controlled Precharge Command

Power Down Mode

Auto Refresh and Self Refresh

Refresh Interval: 8192 cycles/64ms

Available in 90-ball BGA

Double Data Rate (DDR)

Bidirectional Data Strobe (DQS) for input

and output data, active on both edges

Differential clock inputs CLK and /CLK

Power Supply 1.7V - 1.95V

Drive Strength (DS) Option:Full, 1/2, 1/4, 1/8

Auto Temperature-Compensated Self Refresh

(Auto TCSR)

Partial-Array Self Refresh (PASR) Option: Full,

1/2, 1/4, 1/8, 1/16

Deep Power Down (DPD) mode

Operating Temperature Range

Commercial 25°C to 85°C

Industrial-40°C to 85°C

All parts are ROHS Compliant

Description

The AS4C64M32MD1 is a four bank mobile

DDR DRAM organized as 4 banks x 16M x 32. It

achieves high speed data transfer rates by

employing a chip architecture that pre-fetches

multiple bits and then synchronizes the output data

to a system clock.

All of the controls, address, circuits are

synchronized with the positive edge of an

externally supplied clock. I/O transactions are

possible on both edges of DQS.

Operating the four memory banks in an inter-

leaved fashion allows random access operation to

occur at a higher rate than is possible with

standard DRAMs. A sequential and gapless data

rate is possible depending on burst length, CAS

latency and speed grade of the device.

Additionally, the device supports low power

saving features like PASR, Auto-TCSR, DPD as

well as options for different drive strength. It’s

ideally suitable for mobile application.

Table 1. Speed Grade Information

Speed Grade – Data rate Clock Frequency

CAS Latency

tRCD (ns)

tRP (ns)

400Mbps (max)

200 MHz (max)

Table 2 – Ordering Information for ROHS Compliant Products

Product part No

Org

Temperature

Package

AS4C64M32MD1-5BCN

64M x 32

Commercial - 0°C to 70°C

90-ball BGA

AS4C64M32MD1-5BIN

64M x 32

Industrial-40°C to 85°C

90-ball BGA

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