Alliance Memory AS4C128M16D2A-25BCN, SDRAM 2Gbit Surface Mount, 400MHz, 1.7 V to 1.9 V, 84-Pin FBGA

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Subtotal (1 tray of 209 units)*

£1,638.56

(exc. VAT)

£1,966.69

(inc. VAT)

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  • Shipping from 18 February 2026
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Units
Per unit
Per Tray*
209 - 209£7.84£1,638.56
418 - 418£7.636£1,595.92
627 - 836£7.44£1,554.96
1045 +£7.252£1,515.67

*price indicative

RS Stock No.:
230-8409
Mfr. Part No.:
AS4C128M16D2A-25BCN
Brand:
Alliance Memory
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Brand

Alliance Memory

Memory Size

2Gbit

Organisation

128M x 16

SDRAM Class

DDR2

Data Rate

400MHz

Data Bus Width

16bit

Address Bus Width

13bit

Number of Bits per Word

16bit

Maximum Random Access Time

12.5ns

Number of Words

128 M

Mounting Type

Surface Mount

Package Type

FBGA

Pin Count

84

Dimensions

8.1 x 12.5 x 1.2mm

Height

1.2mm

Length

8.1mm

Maximum Operating Temperature

+85 °C

Minimum Operating Temperature

0 °C

Minimum Operating Supply Voltage

1.7 V

Width

12.5mm

Maximum Operating Supply Voltage

1.9 V

The Alliance Memory 2Gb DDR2 is a high-speed CMOS Double-Data- Rate-Two (DDR2), synchronous dynamic random - access memory (SDRAM) containing 2048 Mbits in a 16- bit wide data I/Os. It is internally configured as a 8-bank DRAM, 8 banks x 16Mb 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).

8 internal banks for concurrent operation
4-bit prefetch architecture
Internal pipeline architecture
Precharge & active power down
Programmable Mode & Extended Mode registers

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