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28C256TRT1FS-15 Datasheet

  • 28C256TRT1FS-15

  • 256K EEPROM (32K x 8-Bit) EEPROM

  • 275.17KB

  • 14頁(yè)

  • MAXWELL

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28C256T
256K EEPROM (32K x 8-Bit)
EEPROM
V
CC
GND
DATA INPUTS/OUTPUTS
I/O0 - I/O7
OE
WE
CE
OE, CE, and WE
LOGIC
DATA LATCH
INPUT/OUTPUT
BUFFERS
Y-GATING
CELL MATRIX
Y DECODER
ADDRESS
INPUTS
X DECODER
IDENTIFICATION
Logic Diagram
Memory
F
EATURES
:
鈥?R
AD
-P
AK
廬 radiation-hardened against natural space radia-
tion
鈥?Total dose hardness:
- > 100 Krad (Si), dependent upon space mission
鈥?Excellent Single Event Effects:
- SEL
TH
LET: > 120 MeV/mg/cm
2
- SEU
TH
LET (read mode): > 90 MeV/mg/cm
2
- SEU
TH
LET (write mode): > 18 MeV/mg/cm
2
鈥?Package:
- 28 pin R
AD
-P
AK
廬 flat pack
- 28 pin R
AD
-P
AK
廬 DIP
- JEDEC approved byte wide pinout
鈥?High Speed:
- 120, 150 ns maximum access times available
鈥?High endurance:
- 10,000 erase/write (in Page Mode), 10-year data
retention
鈥?Page Write Mode:
- 1 to 64 bytes
鈥?Low power dissipation:
- 15 mA active current (cycle = 1 碌 s)
- 20 碌 A standby current (CE = V
CC
)
D
ESCRIPTION
:
Maxwell Technologies鈥?28C256T high density 256k-bit
EEPROM microcircuit features a greater than 100 krad (Si)
total dose tolerance, depending upon space mission. The
28C256T is capable of in-system electrical byte and page pro-
grammability. It has a 64-Byte page programming function to
make its erase and write operations faster. It also features
data polling to indicate the completion of erase and program-
ming operations.
Maxwell Technologies' patented R
AD
-P
AK
廬 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, R
AD
-P
AK
provides greater than 100
krad (Si) radiation dose tolerance. This product is available
with screening up to Class S.
02.18.02 Rev 5
All data sheets are subject to change without notice
1
(858) 503-3300 - Fax: (858) 503-3301- www.maxwell.com
漏2001 Maxwell Technologies
All rights reserved.

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