|
|
PDF 28C256T Data sheet ( Hoja de datos )
| Número de pieza | 28C256T | |
| Descripción | 256K EEPROM (32K x 8-Bit) EEPROM | |
| Fabricantes | Maxwell Technologies | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de 28C256T (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
|
No Preview Available !
28C256T
256K EEPROM (32K x 8-Bit)
EEPROM
www.DataSheet4U.com
VCC
GND
OE
WE
CE
ADDRESS
INPUTS
DATA INPUTS/OUTPUTS
I/O0 - I/O7
OE, CE, and WE
LOGIC
Y DECODER
X DECODER
Logic Diagram
DATA LATCH
INPUT/OUTPUT
BUFFERS
Y-GATING
CELL MATRIX
IDENTIFICATION
FEATURES:
• RAD-PAK® radiation-hardened against natural space radia-
tion
• Total dose hardness:
- > 100 Krad (Si), dependent upon space mission
• Excellent Single Event Effects:
- SELTH LET: > 120 MeV/mg/cm2
- SEUTH LET (read mode): > 90 MeV/mg/cm2
- SEUTH LET (write mode): > 18 MeV/mg/cm2
• Package:
- 28 pin RAD-PAK® flat pack
- 28 pin RAD-PAK® DIP
- JEDEC approved byte wide pinout
• High Speed:
- 120, 150 ns maximum access times available
• High endurance:
- 10,000 erase/write (in Page Mode), 10-year data
retention
• Page Write Mode:
- 1 to 64 bytes
• Low power dissipation:
- 15 mA active current (cycle = 1 µ s)
- 20 µ A standby current (CE = VCC)
DESCRIPTION:
Maxwell Technologies’ 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 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, RAD-PAK provides greater than 100
krad (Si) radiation dose tolerance. This product is available
with screening up to Class S.
02.18.02 Rev 5
(858) 503-3300 - Fax: (858) 503-3301- www.maxwell.com
All data sheets are subject to change without notice 1
©2001 Maxwell Technologies
All rights reserved.
1 page  
256K EEPROM (32K x 8-Bit) EEPROM
28C256T
TABLE 8. 28C256T AC ELECTRICAL CHARACTERISTICS FOR PAGE/BYTE ERASE AND WRITE OPERATIONS
(VCC = 5V ±10%, TA = -55 TO 125 °C UNLESS OTHERWISE SPECIFIED)
PARAMETER
SUBGROUPS
SYMBOL
MIN1
TYP
MAX UNITS
WE Pulse Width
-120
-150
CE Pulse Width
-120
-150
9, 10, 11
tWP 2
ns
200 --
--
250 --
--
tCW 3
200
--
--
250 --
--
Address Hold Time
-120
www.DataShee-t145U0.com
Data Setup Time
-120
-150
9, 10, 11
tAH
ns
150 --
--
150 --
--
9, 10, 11
tDS
ns
75 --
--
100 --
--
Data Hold Time
-120
-150
9, 10, 11
tDH
ns
10 --
--
10 --
--
Chip Enable Hold Time2
-120
-150
9, 10, 11
tCH
ns
0 -- --
0 -- --
Output Enable to Write Setup Time
-120
-150
9, 10, 11
tOES
ns
0 -- --
0 -- --
Output Enable Hold Time
-120
-150
Data Latch Time4
-120
-150
9, 10, 11
tOEH
0 -- --
0 -- --
9, 10, 11
tDL
-- 230 --
-- 280 --
ns
ns
Write Cycle Time
-120
-150
9, 10, 11
tWC
--
--
ms
-- 10
-- 10
Byte Load Window4
-120
-150
9, 10, 11
tBL
-- 100 --
-- 100 --
us
Byte Load Cycle4
-120
-150
9, 10, 11
tBLC
us
0.55 --
30
0.55 --
30
Write Start Time
-120
-150
9, 10, 11
tDW
ns
150 --
--
150 --
--
1. Use this device in a longer cycle than this value.
2. WE controlled operation.
3. CE controlled operation.
4. Not tested.
02.18.02 Rev5
All data sheets are subject to change without notice 5
©2001 Maxwell Technologies
All rights reserved.
5 Page 
256K EEPROM (32K x 8-Bit) EEPROM
28C256T
www.DataSheet4U.com
SYMBOL
A
b
c
D
E
E1
E2
E3
e
L
Q
S1
N
28 PIN RAD-PAK® FLAT PACKAGE
DIMENSION
MIN NOM
0.165
0.015
0.003
--
0.380
--
0.180
0.030
0.390
0.040
0.005
0.177
0.017
0.005
0.720
0.410
--
0.240
0.085
0.050 BSC
0.400
0.050
0.027
28
MAX
0.189
0.022
0.009
0.740
0.420
0.440
--
--
0.410
0.053
--
F28-03
Note: All dimensions in inches.
02.18.02 Rev5
All data sheets are subject to change without notice 11
©2001 Maxwell Technologies
All rights reserved.
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet 28C256T.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| 28C256 | 256K 32K x 8 Paged CMOS E2PROM |  ATMEL Corporation |
| 28C256 | 5 Volt / Byte Alterable E2PROM |  Xicor |
| 28C256 | 32K-Bit Parallel E2PROM |  Catalyst |
| 28C256T | 256K EEPROM (32K x 8-Bit) EEPROM | Maxwell Technologies |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |