Rainbow Electronics AT49LV002NT - Manual

1
2-Megabit
(256K x 8)
Single 2.7-volt
Battery-Voltage
™
Flash Memory
AT49BV002
AT49LV002
AT49BV002N
AT49LV002N
AT49BV002T
AT49LV002T
AT49BV002NT
AT49LV002NT
Features
• Single Supply for Read and Write: 2.7 to 3.6V (BV), 3.0 to 3.6V (LV)
• Fast Read Access Time - 70 ns
• Internal Program Control and Timer
• Sector Architecture
– One 16K Byte Boot Block with Programming Lockout
– Two 8K Byte Parameter Blocks
– Two Main Memory Blocks (96K, 128K Bytes)
• Fast Erase Cycle Time - 10 seconds
• Byte-By-Byte Programming - 30 µs/Byte Typical
• Hardware Data Protection
• DATA Polling For End Of Program Detection
• Low Power Dissipation
– 25 mA Active Current
– 50 µA CMOS Standby Current
• Typical 10,000 Write Cycles
Description
The AT49BV/LV002(N)(T) is a 3-volt-only in-system reprogrammable Flash Memory.
Its 2 megabits of memory is organized as 262,144 words by 8 bits. Manufactured with
Atmel’s advanced nonvolatile CMOS technology, the device offers access times to 70
ns with power dissipation of just 90 mW over the commercial temperature range.
When the device is deselected, the CMOS standby current is less than 50 µA. For the
Rev. 0982C–07/98
Pin Configurations
Pin Name Function
A0 - A17 Addresses
CE Chip Enable
OE Output Enable
WE Write Enable
RESET RESET
I/O0 - I/O7 Data Inputs/Outputs
DC Don’t Connect
DIP Top View
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
*RESET
A16
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O0
I/O1
I/O2
GND
VCC
WE
A17
A14
A13
A8
A9
A11
OE
A10
CE
I/O7
I/O6
I/O5
I/O4
I/O3
PLCC Top View
5
6
7
8
9
10
11
12
13
29
28
27
26
25
24
23
22
21
A7
A6
A5
A4
A3
A2
A1
A0
I/O0
A14
A13
A8
A9
A11
OE
A10
CE
I/O7
4 3 2 1
32 31 30
14 15 16 17 18 19 20
I/O1 I/O2 GND I/O3 I/O4 I/O5 I/O6
A12 A15 A16 RESET* VCC WE A17
(continued)
VSOP Top View (8 x 14 mm) or
TSOP Top View (8 x 20 mm)
Type 1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
A11
A9
A8
A13
A14
A17
WE
VCC
*RESET
A16
A15
A12
A7
A6
A5
A4
OE
A10
CE
I/O7
I/O6
I/O5
I/O4
I/O3
GND
I/O2
I/O1
I/O0
A0
A1
A2
A3
*Note: This pin is a DC on the AT49BV002N(T) and AT49LV002N(T).