Rainbow Electronics AT49F1025 - Manual

1
AT49F1025
PLCC Top View
7
8
9
10
11
12
13
14
15
16
17
39
38
37
36
35
34
33
32
31
30
29
I/O12
I/O11
I/O10
I/O9
I/O8
GND
NC
I/O7
I/O6
I/O5
I/O4
A13
A12
A11
A10
A9
GND
NC
A8
A7
A6
A5
6 5 4 3 2 1
44 43 42 41 40
18 19 20 21 22 23 24 25 26 27 28
I/O3 I/O2 I/O1 I/O0
OE NC A0 A1 A2 A3 A4
I/O13 I/O14 I/O15 CE NC NC VCC WE NC A15 A14
Features
• Single-voltage Operation
– 5V Read
– 5V Reprogramming
• Fast Read Access Time – 35 ns
• Internal Program Control and Timer
• 8K Word Boot Block with Lockout
• Fast Erase Cycle Time – 10 seconds
• Word-by-word Programming – 10 µs/Word Typical
• Hardware Data Protection
• Data Polling for End of Program Detection
• Small 10 x 14 mm VSOP Package
• Typical 10,000 Write Cycles
Description
The AT49F1024 and the AT49F1025 are 5-volt-only in-system Flash memories. Their
1 megabit of memory is organized as 65,536 words by 16 bits. Manufactured with
Atmel’s advanced nonvolatile CMOS technology, the devices offer access times to
35 ns with power dissipation of just 275 mW over the commercial temperature range.
When the device is deselected, the CMOS standby current is less than 100 µA. The
only difference between the AT49F1024 and the AT49F1025 is the package.
To allow for simple in-system reprogrammability, the AT49F1024/1025 does not
require high-input voltages for programming. Five-volt-only commands determine the
Rev. 0765I–05/01
1-megabit
(64K x 16)
5-volt Only
Flash Memory
AT49F1024
AT49F1025
Pin Configurations
Pin Name Function
A0 - A15 Addresses
CE Chip Enable
OE Output Enable
WE Write Enable
I/O0 - I/O15 Data Inputs/Outputs
NC No Connect
(continued)
AT49F1024 VSOP Top View
Type 1
10 x 14 mm
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5
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9
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40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
A9
A10
A11
A12
A13
A14
A15
NC
WE
VCC
NC
CE
I/O15
I/O14
I/O13
I/O12
I/O11
I/O10
I/O9
I/O8
GND
A8
A7
A6
A5
A4
A3
A2
A1
A0
OE
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
GND