Rainbow Electronics AT49BV512 - Manual

1
Features
• Single Supply Voltage Range, 2.7V to 3.6V
• Single Supply for Read and Write
• Fast Read Access Time – 70 ns
• Internal Program Control and Timer
• 8K Bytes Boot Block with Lockout
• 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 AT49BV512 is a 3-volt only, 512K Flash memories organized as 65,536 words of
8 bits each. Manufactured with Atmel’s advanced nonvolatile CMOS technology, the
devices offer access times to 70 ns with power dissipation of just 90 mW over the
commercial temperature range. When the devices are deselected, the CMOS standby
current is less than 50 µA.
To allow for simple in-system reprogrammability, the AT49BV512 does not require
high input voltages for programming. Three-volt only commands determine the read
and programming operation of the device. Reading data out of the device is similar to
reading from an EPROM. Reprogramming the AT49BV512 is performed by erasing
512K (64K x 8)
Single 2.7-volt
Battery-Voltage
™
Flash Memory
AT49BV512
Rev. 1026E–FLASH–06/02
VSOP Top View (8 x 14 mm) or
TSOP Top View (8 x 20 mm)
Type 1
Pin Configurations
Pin Name Function
A0 - A15 Addresses
CE Chip Enable
OE Output Enable
WE Write Enable
I/O0 - I/O7 Data Inputs/Outputs
NC No Connect
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
NC
WE
VCC
NC
NC
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
DIP Top View
PLCC 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
NC
NC
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O0
I/O1
I/O2
GND
VCC
WE
NC
A14
A13
A8
A9
A11
OE
A10
CE
I/O7
I/O6
I/O5
I/O4
I/O3
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 NC NC VCC WE NC