at25df641 ATMEL Corporation, at25df641 Datasheet - Page 4

• Manufacturer Part Number: at25df641
• Description: At25df641 64-megabit 2.7-volt Minimum Spi Serial Flash Memory
• Manufacturer: ATMEL Corporation

Table 2-1.
4
Symbol
HOLD
V
GND
Figure 2-1.
CC
AT25DF641 [Preliminary]
Name and Function
HOLD: The HOLD pin is used to temporarily pause serial communication without
deselecting or resetting the device. While the HOLD pin is asserted, transitions on the SCK
pin and data on the SI pin will be ignored, and the SO pin will be in a high-impedance state.
The CS pin must be asserted, and the SCK pin must be in the low state in order for a Hold
condition to start. A Hold condition pauses serial communication only and does not have an
effect on internally self-timed operations such as a program or erase cycle. Please refer to
“Hold” on page 46
The HOLD pin is internally pulled-high and may be left floating if the Hold function will not be
used. However, it is recommended that the HOLD pin also be externally connected to V
whenever possible.
DEVICE POWER SUPPLY: The V
Operations at invalid V
attempted.
GROUND: The ground reference for the power supply. GND should be connected to the
system ground.
SO (SOI)
Pin Descriptions (Continued)
8-VDFN (Top View)
GND
WP
CS
1
2
3
4
for additional details on the Hold operation.
CC
voltages may produce spurious results and should not be
8
7
6
5
VCC
HOLD
SCK
SI (SIO)
CC
pin is used to supply the source voltage to the device.
Figure 2-2.
SO (SOI)
HOLD
VCC
NC
NC
NC
NC
CS
16-SOIC (Top View)
1
2
3
4
5
6
7
8
CC
16
15
14
13
12
11
10
Asserted
9
State
Low
-
-
SCK
SI (SIO)
NC
NC
NC
NC
GND
WP
3680B–DFLASH–2/08
Power
Power
Type
Input