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AT45DB081 Datasheet

  • AT45DB081

  • 8-Megabit 2.7-volt Only Serial DataFlash

  • 16頁

  • ATMEL   ATMEL

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AT45DB081
Features
鈥?/div>
Single 2.7V - 3.6V Supply
鈥?/div>
Serial Interface Architecture
鈥?/div>
Page Program Operation
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?Single Cycle Reprogram (Erase and Program)
鈥?4096 Pages (264 Bytes/Page) Main Memory
Two 264-Byte Data Buffers 鈥?Allows Receiving of Data while Reprogramming of
Non-Volatile Memory
Internal Program and Control Timer
Fast Page Program Time 鈥?7 ms Typical
120
碌s
Typical Page to Buffer Transfer Time
Low Power Dissipation
鈥?4 mA Active Read Current Typical
鈥?2
碌A
CMOS Standby Current Typical
10 MHz Max Clock Frequency
Hardware Data Protection Feature
Serial Peripheral Interface (SPI) Compatible 鈥?Modes 0 and 3
CMOS and TTL Compatible Inputs and Outputs
Commercial and Industrial Temperature Ranges
8-Megabit
2.7-volt Only
Serial
DataFlash
鈩?/div>
AT45DB081
Description
The AT45DB081 is a 2.7-volt only, serial interface Flash memory suitable for in-sys-
tem reprogramming. Its 8,650,752 bits of memory are organized as 4096 pages of
264-bytes each. In addition to the main memory, the AT45DB081 also contains two
data buffers of 264-bytes each. The buffers allow receiving of data while a page in the
main memory is being reprogrammed. Unlike conventional Flash memories that are
accessed randomly with multiple address lines and a parallel interface, the DataFlash
uses a serial interface to sequentially access its data. The simple serial interface facil-
itates hardware layout, increases system reliability, minimizes switching noise, and
(continued)
Pin Configurations
Pin Name
CS
SCK
SI
SO
WP
RESET
RDY/BUSY
Function
Chip Select
Serial Clock
Serial Input
Serial Output
Hardware Page Write
Protect Pin
Chip Reset
Ready/Busy
TSOP Top View
Type 1
RDY/BUSY
RESET
WP
NC
NC
NC
VCC
GND
NC
NC
NC
NC
CS
SCK
SI
SO
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
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
SOIC
GND
NC
NC
CS
SCK
SI
SO
NC
NC
NC
NC
NC
NC
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VCC
NC
NC
WP
RESET
RDY/BUSY
NC
NC
NC
NC
NC
NC
NC
NC
0870A-A鈥?/97
1

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