AT25320B_14 Datasheet, PDF (2/24 Pages) ATMEL Corporation – SPI Serial EEPROM

1. Pin Configurations and Pinouts
Block Write Protection is enabled by programming the status register with one of four blocks of write protection. Separate
Program Enable and Program Disable instructions are provided for additional data protection. Hardware data protection
is provided via the WP pin to protect against inadvertent write attempts to the status register. The HOLD pin may be used
to suspend any serial communication without resetting the serial sequence.
Table 1-1. Pin Configurations
Pin Name
CS
SCK
SI
SO
GND
VCC
WP
HOLD
Function
Chip Select
Serial Data Clock
Serial Data Input
Serial Data Output
Ground
Power Supply
Write Protect
Suspends Serial Input
Figure 1-1. Pinouts
CS
SO
WP
GND
8-lead SOIC
1
8
2
7
3
6
4
5
Top View
V_CC
HOLD
SCK
SI
CS
SO
WP
GND
8-lead TSSOP
1
8
2
7
3
6
4
5
Top View
V_CC
HOLD
SCK
SI
8-pad UDFN
V_CC 8
HOLD 7
SCK 6
SI 5
1 CS
2 SO
3 WP
4 GND
Bottom View
8-pad XDFN
V_CC 8
HOLD 7
SCK 6
SI 5
1 CS
2 SO
3 WP
4 GND
Bottom View
8-ball VFBGA
V_CC 8
HOLD 7
1 CS
2 SO
SCK 6
SI 5
3 WP
4 GND
Bottom View
Note: Drawings are not to scale.
Atmel AT25320B/640B [DATASHEET]
2
8535G–SEEPROM–11/2012