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AT45DB041-CI fiches techniques PDF

ATMEL Corporation - 4-Megabit 2.7-volt Only Serial DataFlash

Numéro de référence AT45DB041-CI
Description 4-Megabit 2.7-volt Only Serial DataFlash
Fabricant ATMEL Corporation 
Logo ATMEL Corporation 





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AT45DB041-CI fiche technique
Features
Single 2.7V - 3.6V Supply
Serial Interface Architecture
Page Program Operation
– Single Cycle Reprogram (Erase and Program)
– 2048 Pages (264 Bytes/Page) Main Memory
Two 264-Byte SRAM Data Buffers – Allows Receiving of Data
While Reprogramming of Non-Volatile Memory
Internal Program and Control Timer
Fast Page Program Time – 7 ms Typical
120 µs Typical Page to Buffer Transfer Time
Low Power Dissipation
– 4 mA Active Read Current Typical
– 8 µA CMOS Standby Current Typical
5 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 AT45DB041 is a 2.7-volt only, serial interface Flash memory suitable for in-sys-
tem reprogramming. Its 4,325,376 bits of memory are organized as 2048 pages of
264-bytes each. In addition to the main memory, the AT45DB041 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 memo-
ries 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 facilitates hardware layout, increases system reliability, minimizes switching
Pin Configurations
PLCC
(continued)
SOIC
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
SCK
SI
SO
NC
NC
NC
NC
NC
NC
5
6
7
8
9
10
11
12
13
29 WP
28 RESET
27 RDY/BUSY
26 NC
25 NC
24 NC
23 NC
22 NC
21 NC
GND
NC
NC
CS
SCK
SI
SO
NC
NC
NC
NC
NC
NC
NC
Note: PLCC package pins 16
and 17 are DON’T CONNECT.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28 VCC
27 NC
26 NC
25 WP
24 RESET
23 RDY/BUSY
22 NC
21 NC
20 NC
19 NC
18 NC
17 NC
16 NC
15 NC
RDY/BUSY
RESET
WP
NC
NC
VCC
GND
NC
NC
NC
CS
SCK
SI
SO
1
2
3
4
5
6
7
8
9
10
11
12
13
14
TSOP Top View
Type 1
28 NC
27 NC
26 NC
25 NC
24 NC
23 NC
22 NC
21 NC
20 NC
19 NC
18 NC
17 NC
16 NC
15 NC
CBGA Top View
Through Package
12345
A
NC NC NC NC
B
NC SCK GND VCC NC
C
NC CS RDY/BSY WP NC
D
NC SO SI RESET NC
E
NC NC NC NC NC
4-Megabit
2.7-volt Only
Serial
DataFlash®
AT45DB041
Rev. 0669D–07/98
1

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