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PDF AT17C256A Data sheet ( Hoja de datos )
| Número de pieza | AT17C256A | |
| Descripción | FPGA Configuration EEPROM | |
| Fabricantes | ATMEL Corporation | |
| Logotipo |  |
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Features
• EE Programmable 65,536 x 1, 131,072 x 1 and 262,144 x 1 bit Serial Memories Designed
to Store Configuration Programs for Programmable Gate Arrays
• Simple Interface to SRAM FPGAs Requires Only One User I/O Pin
• Able to Configure with EPF6000 and EPF8000, Flex 10K FPGAs
• Cascadable To Support Additional Configurations or Future Higher-Density Arrays
(17C128/256 only)
• Low-Power CMOS EEPROM Process
• Programmable Reset Polarity
• Available in Industry-Standard Pin-Compatible PLCC Package
• In-System Programmable via 2-Wire Bus
• Emulation of 24CXX Serial EEPROMs
• Available in 3.3V and 5V Versions
Description
The AT17C65/128/256A and AT17LV65/128/256A (AT17A Series) FPGA Configura-
tion EEPROMS (Configurator) provide an easy-to-use, cost-effective configuration
memory for Field Programmable Gate Arrays. The AT17A Series is packaged in the
popular 20-pin PLCC. The AT17A Series family uses a simple serial-access provides
to configure one or more FPGA devices. The AT17A Series organization supplies
enough memory to configure one or multiple smaller FPGAs. Using a special feature
of the AT17A Series, the user can select the polarity of the reset function by program-
ming a special EEPROM bit.
The AT17A Series is pin compatible with the industry standard configurator, and can
be programmed with industry standard programmers.
Pin Configurations
20-Pin PLCC
FPGA
Configuration
EEPROM
65K, 128K and 256K
AT17CxxxA
AT17LVxxxA
CLK (DCLK)
NC
NC
NC
RESET/OE (RESET/OE)
4
5
6
7
8
18 SER_EN
17 NC
16 NC
15 NC
14 NC
Rev. 0996A–07/98
1
1 page  
.
DC Characteristics
VCC = 5V ± 5% Commercial / 5V ± 10% Ind./Mil.
Symbol Description
VIH High-level input voltage
VIL Low-level input voltage
VOH High-level output voltage (IOH = -4 mA)
VOL Low-level output voltage (IOL = +4 mA)
VOH High-level output voltage (IOH = -4 mA)
VOL Low-level output voltage (IOL = +4 mA)
VOH High-level output voltage (IOH = -4 mA)
VOL Low-level output voltage (IOL = +4 mA)
ICCA Supply current, active mode
IL Input or output leakage current (VIN = VCC or GND)
Supply current, standby mode AT17C256
ICCS
Supply current, standby mode AT17C128/65
DC Characteristics
VCC = 3.3V ± 10%
Symbol Description
VIH High-level input voltage
VIL Low-level input voltage
VOH High-level output voltage (IOH = -2.5 mA)
VOL Low-level output voltage (IOL = +3 mA)
VOH High-level output voltage (IOH = -2 mA)
VOL Low-level output voltage (IOL = +3 mA)
VOH High-level output voltage (IOH = -2 mA)
VOL Low-level output voltage (IOL = +2.5 mA)
ICCA Supply current, active mode
IL Input or output leakage current (VIN = VCC or GND)
ICCS Supply current, standby mode
AT17A Series
Commercial
Industrial
Military
Min
2.0
0
3.7
3.6
3.5
Commercial
Industrial/Military
Commercial
Industrial/Military
-10
Max
VCC
0.8
0.32
0.37
0.4
10
10
75
150
1
2
Units
V
V
V
V
V
V
V
V
mA
µA
µA
µA
mA
mA
Commercial
Industrial
Military
Min
2.0
0
2.4
2.4
2.4
Commercial
Industrial/Military
-10
Max
VCC
0.8
0.4
0.4
0.4
5
10
50
100
Units
V
V
V
V
V
V
V
V
mA
µA
µA
µA
5
5 Page 
Packaging Information
20J, 20-Lead, Plastic J-Leaded Chip Carrier (PLCC)
Dimensions in Inches and (Millimeters)
JEDEC STANDARD MS-018 AA
AT17A Series
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet AT17C256A.PDF ] | |
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