AT49(H)BV/(H)LV01
1
Features
• Single Supply Voltage, Range 2.7V to 3.6V
• Single Supply for Read and Write
• Fast Read Access Time - 55 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 AT49(H)BV010 and the AT49(H)LV010 are 3-volt-only, 1-megabit Flash memo-
ries organized as 131,072 words of 8 bits each. Manufactured with Atmel’s advanced
nonvolatile CMOS technology, the devices offer access times to 55 ns with power dis-
sipation 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 AT49(H)BV/(H)LV010 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 AT49(H)BV/(H)LV010 is
performed by erasing the entire 1 megabit of memory and then programming on a
byte by byte basis. The typical byte programming time is a fast 30 µs. The end of a
program cycle can be optionally detected by the DATA polling feature. Once the end
of a byte program cycle has been detected, a new access for a read or program can
begin. The typical number of program and erase cycles is in excess of 10,000 cycles.
1-Megabit
(128K x 8)
Single 2.7-volt
Battery-Voltage
™
Flash Memory
AT49BV010
AT49HBV010
AT49LV010
AT49HLV010
0677B-A–9/97
Pin Configurations
Pin Name Function
A0 - A16 Addresses
CE Chip Enable
OE Output Enable
WE Write Enable
I/O0 - I/O7 Data Inputs/Outputs
NC No Connect
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 NC VCC WE A17
TSOP Top View
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
NC
WE
VCC
NC
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
(continued)