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AT45DB021A-RI Datasheet(PDF) 1 Page - ATMEL Corporation

Part # AT45DB021A-RI
Description  2-megabit 2.7-volt Only Serial DataFlash
Download  28 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT45DB021A-RI Datasheet(HTML) 1 Page - ATMEL Corporation

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1
Features
100% Compatible to AT45D021
Single 2.7V - 3.6V Supply
Serial Interface Architecture
Page Program Operation
– Single Cycle Reprogram (Erase and Program)
– 1024 Pages (264 Bytes/Page) Main Memory
Optional Page and Block Erase Operations
Two 264-byte SRAM Data Buffers – Allows Receiving of Data
while Reprogramming of Nonvolatile Memory
Continuous Read Capability through Entire Array
Internal Program and Control Timer
Low Power Dissipation
– 4 mA Active Read Current Typical
– 2 µA CMOS Standby Current Typical
13 MHz Max Clock Frequency
Hardware Data Protection Feature
Serial Peripheral Interface (SPI) Compatible – Modes 0 and 3
CMOS and TTL Compatible Inputs and Outputs
Commercial and Industrial Temperature Ranges
Description
The AT45DB021A is a 2.7-volt only, serial interface Flash memory suitable for
in-system reprogramming. Its 2,162,688 bits of memory are organized as 1024 pages
of 264 bytes each. In addition to the main memory, the AT45DB021A also contains
two SRAM 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
2-megabit
2.7-volt Only
Serial
DataFlash®
AT45DB021A
Recommend using
AT45DB021B for new
designs.
Rev. 1642C–01/01
Pin Configurations
Pin Name
Function
CS
Chip Select
SCK
Serial Clock
SI
Serial Input
SO
Serial Output
WP
Hardware Page Write
Protect Pin
RESET
Chip Reset
RDY/BUSY
Ready/Busy
PLCC
Note: PLCC package pins 16
and 17 are DON’T CONNECT.
5
6
7
8
9
10
11
12
13
29
28
27
26
25
24
23
22
21
SCK
SI
SO
NC
NC
NC
NC
NC
NC
WP
RESET
RDY/BUSY
NC
NC
NC
NC
NC
NC
TSOP Top View
Type 1
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
RDY/BUSY
RESET
WP
NC
NC
VCC
GND
NC
NC
NC
CS
SCK
SI
SO
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
SOIC
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
GND
NC
NC
CS
SCK
SI
SO
NC
NC
NC
NC
NC
NC
NC
VCC
NC
NC
WP
RESET
RDY/BUSY
NC
NC
NC
NC
NC
NC
NC
NC
(continued)


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