AT68166HT Datasheet, PDF (1/15 Pages) ATMEL Corporation – Rad Hard 16 MegaBit 3.3V 5V Tolerant SRAM Multi-Chip Module

Features
• 16 Mbit SRAM Multi Chip Module
• Allows 32-, 16- or 8-bit access configuration
• Operating Voltage: 3.3V + 0.3V, 5V Tolerant
• Access Time:
– 25 ns
– 20 ns
– 18 ns (preliminary information)
• Very Low Power Consumption
– Active: 595 mW per byte (Max) @ 20 ns⁽¹⁾, 415mW per byte (Max) @ 50ns⁽²⁾
– Standby: 15 mW (Typ)
• Military Temperature Range: -55 to +125°C
• TTL-Compatible Inputs and Outputs
• Asynchronous
• Die manufactured on Atmel 0.25 µm Radiation Hardened Process
• No Single Event Latch Up below LET Threshold of 80 MeV/mg/cm²@125°C
• Tested up to a Total Dose of 300 krads (Si) according to MIL-STD-883 Method 1019
• ESD better than 2000V
• Quality Grades:
– QML-Q or V
– ESCC
• 950 Mils Wide MQFPT68 Package
• Mass : 8.5 grams
Notes: 1. For AT68166HT-20 only. 540mW for AT68166HT-25.
2. For AT68166HT-20 only. 450mW for AT68166HT-25.
Rad Hard
16 MegaBit 3.3V
5V Tolerant
SRAM Multi-
Chip Module
AT68166HT
Description
The AT68166HT is a 16Mbit SRAM packaged in a hermetic Multi Chip Module (MCM)
for space applications.
The AT68166HT MCM incorporates four 4Mbit AT60142HT SRAM dice. It can be
organized as either one bank of 512Kx8, two banks of 512Kx16 or four banks of
512Kx8. It combines rad-hard capabilities, a latch-up threshold of 80MeV.cm²/mg, a
Multiple Bit Upset immunity and a total dose tolerance of 300Krads, with a fast access
time.
The MCM packaging technology allows a reduction of the PCB area by 50% with a
weight savings of 75% compared to four 4Mbit packages.
Thanks to the small size of the 4Mbit SRAM die, Atmel has been able to accommo-
date the assembly of the four dice on one side of the package which facilitates the
power dissipation.
The compatibility with other products allows designers to easily migrate to the Atmel
AT68166HT memory.
The AT68166HT is powered at 3.3V and is 5V tolerant.
The AT68166HT is processed according to the test methods of the latest revision of
the MIL-PRF-38535 or the ESCC 9000.
7843A–AERO–10/09