at45db041b ATMEL Corporation, at45db041b Datasheet - Page 2

• Manufacturer Part Number: at45db041b
• Description: At45db041b 4-megabit 2.5-volt Or 2.7-volt Dataflash
• Manufacturer: ATMEL Corporation

2. Pin Configurations and Packages
2
AT45DB041B
When the device is shipped from Atmel, the most significant page of the memory array may not
be erased. In other words, the contents of the last page may not be filled with FFH.
Table 2-1.
Pin Name
CS
SCK
SI
SO
WP
RESET
RDY/BUSY
Figure 2-1.
Figure 2-2.
Figure 2-4.
Note:
1. The next generation DataFlash devices will not be
offered in 28-SOIC package, therefore, this pack-
age is not recommended for new designs.
Pin Configurations
TSOP Top View Type 1
CASON – Top View through Package
28-SOIC
RESET
GND
SCK
SCK
NC
NC
CS
SO
NC
NC
NC
NC
NC
NC
NC
SI
CS
SI
1
2
3
4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
(1)
RDY/BUSY
RESET
GND
VCC
SCK
28
27
26
25
24
23
22
21
20
19
18
17
16
15
WP
NC
NC
NC
NC
NC
CS
SO
SI
1
2
3
4
5
6
7
8
9
10
11
12
13
14
VCC
NC
NC
WP
RESET
RDY/BUSY
NC
NC
NC
NC
NC
NC
NC
NC
8
7
6
5
Function
Chip Select
Serial Clock
Serial Input
Serial Output
Hardware Page Write Protect Pin
Chip Reset
Ready/Busy
SO
GND
VCC
WP
Figure 2-3.
Figure 2-5.
28
27
26
25
24
23
22
21
20
19
18
17
16
15
RESET
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
SCK
CS
A
B
C
D
E
SI
SCK
CS
SO
NC
8-SOIC
1
2
3
4
CBGA Top View
through Package
1
RDY/BSY
GND
NC
NC
SI
2
3443D–DFLSH–2/08
RESET
8
7
6
5
VCC
WP
NC
NC
3
SO
GND
VCC
WP