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W49F002U Datasheet Preview

W49F002U Datasheet

256K x 8 CMOS FLASH MEMORY

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W49F002U
256K × 8 CMOS FLASH MEMORY
GENERAL DESCRIPTION
The W49F002U is a 2-megabit, 5-volt only CMOS flash memory organized as 256K × 8 bits. The
device can be programmed and erased in-system with a standard 5V power supply. A 12-volt VPP is
not required. The unique cell architecture of the W49F002U results in fast program/erase operations
with extremely low current consumption (compared to other comparable 5-volt flash memory
products). The device can also be programmed and erased using standard EPROM programmers.
FEATURES
Single 5-volt operations:
5-volt Read
5-volt Erase
5-volt Program
Fast Program operation:
Byte-by-Byte programming: 35 µS (typ.)
Fast Erase operation: 100 mS (typ.)
Fast Read access time: 70/90/120 nS
Endurance: 10K cycles (typ.)
Ten-year data retention
Hardware data protection
One 16K byte Boot Block with Lockout
protection
Two 8K byte Parameter Blocks
Two Main Memory Blocks (96K, 128K) Bytes
Low power consumption
Active current: 25 mA (typ.)
Standby current: 20 µA (typ.)
Automatic program and erase timing with
internal VPP generation
End of program or erase detection
Toggle bit
Data polling
Latched address and data
TTL compatible I/O
JEDEC standard byte-wide pinouts
Available packages: 32-pin DIP and 32-pin
TSOP and 32-pin-PLCC
Publication Release Date: April 2000
- 1 - Revision A2




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W49F002U Datasheet Preview

W49F002U Datasheet

256K x 8 CMOS FLASH MEMORY

No Preview Available !

W49F002U
PIN CONFIGURATIONS
BLOCK DIAGRAM
RESET
A16
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32-pin
DIP
32 VDD
31 WE
30 A17
29 A14
28 A13
27 A8
26 A9
25 A11
24 OE
23 A10
22 CE
21 DQ7
20 DQ6
19 DQ5
18 DQ4
17 DQ3
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
/
R
E
A AA S V / A
1 1 1 E DW 1
2 56 TDE7
4 3 2 1 32 31 30
5 29
6 28
7 27
8
32-pin
26
9
PLCC
25
10 24
11 23
12 22
13 21
14 15 16 17 18 19 20
A14
A13
A8
A9
A11
OE
A10
CE
DQ7
DDGD D DD
QQNQQQQ
1 2D 3 4 5 6
A11
A9
A8
A13
A14
A17
WE
VDD
RESET
A16
A15
A12
A7
A6
A5
A4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32-pin
TSOP
32 OE
31 A10
30 CE
29 DQ7
28 DQ6
27 DQ5
26 DQ4
25 DQ3
24 GND
23 DQ2
22 DQ1
21 DQ0
20 A0
19 A1
18 A2
17 A3
VDD
VSS
CE
OE
WE
RESET
CONTROL
A0
.
DECODER
.
A17
OUTPUT
BUFFER
DQ0
.
.
DQ7
BOOT BLOCK
16K BYTES
PARAMETER
BLOCK1
8K BYTES
PARAMETER
BLOCK2
8K BYTES
MAIN MEMORY
BLOCK1
96K BYTES
MAIN MEMORY
BLOCK2
128K BYTES
3FFFF
3C000
3BFFF
3A000
39FFF
38000
37FFF
20000
1FFFF
00000
PIN DESCRIPTION
SYMBOL
RESET
A0A17
DQ0DQ7
CE
OE
WE
VDD
GND
PIN NAME
Reset
Address Inputs
Data Inputs/Outputs
Chip Enable
Output Enable
Write Enable
Power Supply
Ground
-2-


Part Number W49F002U
Description 256K x 8 CMOS FLASH MEMORY
Maker Winbond
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W49F002U Datasheet PDF






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