IS43LR16320B, IS46LR16320B

11

Rev. A | Apr. 2012

www.issi.com - dram@issi.com

8M x 16Bits x 4Banks Mobile DDR SDRAM

Description

The IS43/46LR16320B is a 536,870,912 bits CMOS Mobile Double Data Rate Synchronous DRAM organized as 4 banks of 8,388,608 words x

16 bits. This product uses a double-data-rate architecture to achieve high-speed operation. The Data Input/ Output signals are transmitted

on a 16bit bus. The double data rate architecture is essentially a 2

N prefetch architecture with an interface designed to transfer two data

words per clock cycle at the I/O pins. This product offers fully synchronous operations referenced to both rising and falling edges of the clock.

The data paths are internally pipelined and 2n-bits prefetched to achieve very high bandwidth. All input and output voltage levels are

compatible with LVCMOS.

Features

• JEDEC standard 1.8V power supply.

• VDD = 1.8V, VDDQ = 1.8V

• Four internal banks for concurrent operation

• MRS cycle with address key programs

- CAS latency 2, 3 (clock)

- Burst length (2, 4, 8, 16)

- Burst type (sequential & interleave)

• Fully differential clock inputs (CK, /CK)

• All inputs except data & DM are sampled at the rising

edge of the system clock

• Data I/O transaction on both edges of data strobe

• Bidirectional data strobe per byte of data (DQS)

• DM for write masking only

• Edge aligned data & data strobe output

• Center aligned data & data strobe input

• 64ms refresh period (8K cycle)

• Auto & self refresh

• Concurrent Auto Precharge

• Maximum clock frequency up to 166MHZ

• Maximum data rate up to 333Mbps/pin

• Power Saving support

- PASR (Partial Array Self Refresh)

- Auto TCSR (Temperature Compensated Self Refresh)

- Deep Power Down Mode

- Programmable Driver Strength Control by Full Strength

or 1/2, 1/4, 1/8 of Full Strength

• LVCMOS compatible inputs/outputs

• 60-Ball FBGA package

Copyright © 2010 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its

products at any time without notice. ISSI assumes no liability arising out of the application or use of any information, products or services

described herein. Customers are advised to obtain the latest version of this device specification before relying on any published information

and before placing orders for products.