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W29C020C-70

W29C020C-70

Model W29C020C-70
Description 256K X 8 CMOS FLASH MEMORY
PDF file Total 21 pages (File size: 195K)
Chip Manufacturer WINBOND
W29C020C
256K
×
8 CMOS FLASH MEMORY
GENERAL DESCRIPTION
The W29C020C is a 2-megabit, 5-volt only CMOS flash memory organized as 256K
×
8 bits. The
device can be written (erased and programmed) in-system with a standard 5V power supply. A 12-volt
V
PP
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)
Software and hardware data protection
Low power consumption
Active current: 25 mA (typ.)
Standby current: 20
µA
(typ.)
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
µS
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
Automatic write (erase/program) timing with
internal V
PP
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
-1-
Publication Release Date: April 2000
Revision A2
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