at45db321c ATMEL Corporation, at45db321c Datasheet - Page 2

• Manufacturer Part Number: at45db321c
• Description: 32-megabit 2.7 Volt Dataflash At45db321c For New Designs Use At45db321d
• Manufacturer: ATMEL Corporation

2. Pin Configurations and Packages
Table 2-1.
2
RDY/BUSY
Pin Name
CS
SCK
SI
SO
WP
RESET
RDY/BUSY
Figure 2-1.
Figure 2-4.
Note:
RESET
GND
VCC
SCK
WP
NC
NC
NC
NC
NC
SO
CS
SI
1. See AT45DCB004C Datasheet
1
2
3
4
5
6
7
8
9
10
11
12
13
14
AT45DB321C
Pin Configurations
TSOP Top View – Type 1
DataFlash Card
through Package
7 6
5 4 3 2 1
To allow for simple in-system reprogrammability, the AT45DB321C does not require high input
voltages for programming. The device operates from a single power supply, 2.7V to 3.6V, for
both the program and read operations. The AT45DB321C is enabled through the chip select pin
(CS) and accessed via a three-wire interface consisting of the Serial Input (SI), Serial Output
(SO), and the Serial Clock (SCK).
All programming and erase cycles are self-timed.
(1)
Top View
28
27
26
25
24
23
22
21
20
19
18
17
16
15
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
Function
Chip Select
Serial Clock
Serial Input
Serial Output
Hardware Page Write Protect Pin
Chip Reset
Ready/Busy
Figure 2-2.
Figure 2-5.
RESET
A
B
C
D
E
SCK
CS
SI
NC
NC
NC
NC
1
1
2
3
4
SCK
NC
CS
SO
NC
CBGA Top View
through Package
2
CASON – Top View
through Package
RDY/BSY
GND
NC
NC
3
SI
RESET
VCC
WP
NC
NC
4
8
7
6
5
NC
NC
NC
NC
NC
5
SO
GND
VCC
WP
Figure 2-3.
GND
SCK
NC
NC
SO
NC
NC
NC
NC
NC
NC
NC
CS
SI
1
2
3
4
5
6
7
8
9
10
11
12
13
14
SOIC Top View
28
27
26
25
24
23
22
21
20
19
18
17
16
15
3387M–DFLASH–2/08
VCC
NC
NC
WP
RESET
RDY/BUSY
NC
NC
NC
NC
NC
NC
NC
NC