79C0408 Datasheet, PDF (1/20 Pages) Maxwell Technologies – 4 Megabit (512k x 8-bit) EEPROM MCM

79C0408
4 Megabit (512k x 8-bit)
EEPROM MCM
RES
R/B
WE
OE
A_0-16
CE₁
128K x 8
CE₂
128K x 8
CE₃
128K x 8
CE₄
128K x 8
FEATURES:
• Four 128k x 8-bit EEPROMs MCM
• RAD-PAK® radiation-hardened against natural
space radiation
• Total dose hardness:
- > 100 krad (Si), depending upon space mission
• Excellent Single Event Effects
- SEL > 120 MeV/mg/cm²
- SEU > 90 MeV/mg/cm² read mode
- SEU = 18 MeV/mg/cm² write mode
• Package:
• - 40 pin RAD-PAK® flat pack
• - 40 pin X-Ray Pak^TM flat pack
• - 40 pin Rad-Tolerant flat pack
• High speed:
- 120, 150, and 200 ns maximum access times
available
• Data Polling and Ready/Busy signal
• Software data protection
• Write protection by RES pin
• High endurance
- 10,000 erase/write (in Page Mode),
- 10 year data retention
• Page write mode: 1 to 128 byte page
• Low power dissipation
- 80 mW/MHz active mode
- 440 µ W standby mode
I/ O_0-7
Logic Diagram
DESCRIPTION:
Maxwell Technologies’ 79C0408 multi-chip module (MCM)
memory features a greater than 100 krad (Si) total dose toler-
ance, depending upon space mission. Using Maxwell Technol-
ogies’ patented radiation-hardened RAD-PAK® MCM
packaging technology, the 79C0408 is the first radiation-hard-
ened 4 Megabit MCM EEPROM for space applications. The
79C0408 uses four 1 Megabit high-speed CMOS die to yield a
4 Megabit product. The 79C0408 is capable of in-system elec-
trical 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 79C0408, hardware data protection is provided with the
RES pin, in addition to noise protection on the WE signal.
Software data protection is implemented using the JEDEC
optional standard algorithm.
Maxwell Technologies' patented RAD-PAK® packaging technol-
ogy incorporates radiation shielding in the microcircuit pack-
age. 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, the RAD-PAK® package provides
greater than 100 krad (Si) radiation dose tolerance. This prod-
uct is available with screening up to Class K.
10.13.04 Rev 15
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All data sheets are subject to change without notice 1
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