Alliance Semiconductor AS7C252MFT18A 2.5V 2M×18 Flow-through Synchronous SRAM Datasheet

AS7C252MFT18A is a 2.5V 32 Mb Synchronous SRAM with the following features: Organization: 2,097152 words × 18 bits, Fast clock to data access time: 7.5/8.5/10 ns, Fast OE access time: 3.5/4.0 ns, Fully synchronous flow-through operation, Asynchronous output enable control, Available in 100-pin TQFP package, Individual byte write and global write, Multiple chip enables for easy expansion, 2.5V core power supply, Linear or interleaved burst control, Snooze mode for reduced power-standby, Common data inputs and data outputs.


Alliance Semiconductor AS7C252MFT18A 2.5V 2M×18 Flow-through Synchronous SRAM Datasheet - cover page
Brand
Alliance Semiconductor
Category
Other Electronics
Document type
Datasheet
Language
English
Pages
19
File format
PDF
File size
492 KB
Published
04 June, 2012
Updated
30 September, 2023
MD5 checksum
F04780523CC432FBA0FE69F2F10F5CD9

About this manual

The AS7C252MFT18A is a high‑performance 32‑Mbit CMOS synchronous SRAM organized as 2,097,152 words × 18 bits. It offers fast clock‑to‑data access times of 7.5 ns, 8.5 ns or 10 ns and an asynchronous output‑enable access time of 3.5 ns to 4.0 ns. The device supports flow‑through burst operation, individual byte write, global write, multiple chip enables, and a low‑power snooze mode.

The SRAM is supplied from a 2.5 V core voltage (VDD) with I/O voltage (VDDQ) of 2.5 V + 0.125 V, and is available in a 100‑pin TQFP package. Detailed electrical ratings, timing diagrams, pin assignments, and truth tables are provided for design integration.

What's inside

  • Features
  • Functional description
  • Pin assignment
  • Signal descriptions
  • Write enable truth table
  • Synchronous truth table
  • Absolute maximum ratings
  • Recommended operating conditions
  • Ordering information

Specifications

Organization2,097,152 words × 18 bits
Core supply voltage (VDD)2.5 V + 0.125 V
I/O supply voltage (VDDQ)2.5 V + 0.125 V
Clock access time7.5 ns / 8.5 ns / 10 ns
OE access time3.5 ns / 4.0 ns
Package100‑pin TQFP
Maximum operating current325 mA
Maximum standby current130 mA
Maximum CMOS standby current (DC)90 mA
Input voltage (Vpp) range2.375 V – 2.625 V
I/O voltage (Vppe) range2.375 V – 2.625 V
Storage temperature range-65 °C to +150 °C
Temperature under bias range-65 °C to +135 °C

Frequently asked questions

What is the core supply voltage for the AS7C252MFT18A?

The core supply voltage (VDD) is 2.5 V + 0.125 V.

Which package type is the SRAM offered in?

It is offered in a 100‑pin TQFP package.

What are the maximum operating and standby currents?

Maximum operating current is 325 mA, and maximum standby current is 130 mA.

What is the clock‑to‑data access time range?

The device provides clock‑to‑data access times of 7.5 ns, 8.5 ns or 10 ns.

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