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W29C020CP90B

  

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Winbond
Winbond
W29C020CP90B 256K X 8 CMOS FLASH MEMORY

GENERAL DESCRIPTION
The W29C020C is a 2-megabit, 5-volt only CMOS flash memory organized as 256K x 8 bits. The device can be written (erased and programmed) in-system with a standard 5V power supply. A 12-volt VPP is not required. The unique cell architecture of the W29C020C results in fast write (erase/program) operations with extremely low current consumption compared to other comparable 5-volt flash memory products. The device can also be written (erased and programmed) by using standard EPROM programmers.

FEATURES
·  Single 5-volt write (erase and program) operations
·  Fast page-write operations
-  128 bytes per page
-  Page write (erase/program) cycle: 10 mS (max.)
-  Effective byte-write (erase/program) cycle time: 39 mS
-  Optional software-protected data write
·  Fast chip-erase operation: 50 mS
·  Two 8 KB boot blocks with lockout
·  Whole chip cycling: 10K (typ.)
·  Read access time: 70/90/120 nS
·  Twenty-year data retention
·  Software and hardware data protection
·  Low power consumption
-  Active current: 25 mA (typ.)
-  Standby current: 20 mA (typ.)
·  Automatic write (erase/program) timing with internal VPP generation
·  End of write (erase/program) detection
-  Toggle bit
-  Data polling
·  Latched address and data
·  All inputs and outputs directly TTL compatible
·  JEDEC standard byte-wide pinouts
·  Available packages: 32-pin 600 mil DIP, 32-pin TSOP, and 32-pin PLCC


other parts : W29C020C  W29C020C-12  W29C020C-12B  W29C020C-70  W29C020C-70B  W29C020C-90  W29C020C-90B  W29C020C12BN  W29C020C90BN  W29C020CP12B  
W29C020CP90B PDF

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