Product Overview

AS4C32M16D2A-25BCN is a 32M x 16bit DDR2 synchronous DRAM (SDRAM). It is a high-speed CMOS double-data-rate-two (DDR2), synchronous dynamic random-access memory (SDRAM) containing 512Mbits in a 16-bit wide data I/Os. It is internally configured as a quad bank DRAM, 4 banks x 8Mb addresses x 16 I/Os. The device is designed to comply with DDR2 DRAM key features such as posted CAS# with additive latency, write latency = read latency -1, off-chip driver (OCD) impedance adjustment, and on die termination(ODT). All of the control and address inputs are synchronized with a pair of externally supplied differential clocks. Inputs are latched at the cross point of differential clocks (CK rising and CK# falling). All I/Os are synchronized with a pair of bidirectional strobes (DQS and DQS#) in a source synchronous fashion. An auto precharge function may be enabled to provide a self-timed row precharge that is initiated at the end of the burst sequence.

• JEDEC standard compliant, JEDEC standard 1.8V I/O (SSTL-18-compatible)
• Power supplies: VDD and VDDQ = +1.8V 0.1V, 8192 refresh cycles / 64ms, FBGA package
• Supports JEDEC clock jitter specification, fully synchronous operation
• Differential clock, CK and CK#, bidirectional single/differential data strobe, DQS and DQS#
• 4 internal banks for concurrent operation, 4bit prefetch architecture
• Precharge and active power down, programmable mode and extended mode registers
• Posted CAS# additive latency (AL): 0, 1, 2, 3, 4, 5, 6, WRITE latency = READ latency – 1 tCK
• Burst lengths: 4 or 8, burst type: sequential / interleave, DLL enable/disable
• Off-chip driver (OCD), impedance adjustment, adjustable data-output drive strength
• 400MHz clock frequency, 800Mbps/pin data rate, operating temperature: TC = 0 to 95C

Product details

Technical Specifications

DRAM Type

DDR2

Memory Configuration

32M x 16bit

IC Case / Package

FBGA

Supply Voltage Nom

1.8V

Operating Temperature Min

0C

Product Range

–

SVHC

No SVHC (27-Jun-2024)

Memory Density

512Mbit

Clock Frequency Max

400MHz

No. of Pins

84Pins

IC Mounting

Surface Mount

Operating Temperature Max

95C

MSL

MSL 3 – 168 hours

Other details

All product and company names are trademarks or registered trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.