Maxwell Technologies: Micro Electronics Memory

Components

79LV0408 EEPROM MCM, 4 Megabit (512k x 8-bit), Low Power

Package(s) :
40-Pin RAD-PAK® Flat Pack 40-Pin X-RAY TM Flat Pack 40-Pin Rad-Tolerant Flat Pack
Memory Size:
512k x 8-bit
Voltage:
3.3V low voltage operation
Access Time:
200 or 250ns

Radiation Performance:
Total dose hardness >100 krad (Si), dependent upon orbit
SEL_threshold > 84 MeV-cm²/mg
SEU_threshold ~ 26 MeV-cm²/mg (Read Mode)
SEU_{saturated cross section} ~ 2 x 10^-12 cm²/bit (Read Mode)
SEU_threshold ~ 11 MeV-cm²/mg (Write Mode)
SEU_{saturated cross section} ~ 6 x 10^-9 cm²/bit (Write Mode)

Specifications At A Glance
Four 128k x 8-bit EEPROMs MCM
High Speed:
200 and 250 ns maximum access times available
Automatic programming:
10 ms automatic Page/Byte write
High Speed:
200 and 250 ns maximum access times
High endurance:
10,000 Erase/Write (in Page Mode)
10 Year Data Retention
Page write mode:
1 to 128 byte page
Low power dissipation
88 mW/MHz Active Mode
440 µW Standby Mode
Data Polling and Ready/Busy Signal
Software Data Protection
Write Protection by RES pin

Maxwell Technologies’ 79LV0408 multi-chip module (MCM) memory features a greater than 100 krad (Si) total dose tolerance, dependent upon orbit. Using Maxwell Technologies’ patented radiation-hardened RAD-PAK® MCM packaging technology, the 79LV0408 is the first radiation-hardened 4 Megabit MCM EEPROM for space applications. The 79LV0408 uses four 1 Megabit high-speed CMOS die to yield a 4 Megabit product.

The 79LV0408 is capable of in-system electrical Byte and Page programmability. It has a 128 bytes Page Programming function to make its erase and write operations faster. It also features Data Polling and a Ready/Busy signal to indicate the completion of erase and programming operations. In the 79LV0408, hardware data protection is provided with the RES pin, in addition to noise protection on the WE signal and write inhibit on power on and off. Software data protection is implemented using the JEDEC optional standard algorithm.

About RAD-PAK® Technology

Maxwell Technologies' patented RAD-PAK® packaging technology incorporates radiation shielding in the microcircuit package. It eliminates the need for box shielding while providing the required radiation shielding for a lifetime in orbit or space mission. In a GEO orbit, RAD-PAK provides greater than 100 krad (Si) radiation dose tolerance. This product is available with screening up to Class S.