M24256-BHR STMICROELECTRONICS [STMicroelectronics], M24256-BHR Datasheet - Page 9

• Manufacturer Part Number: M24256-BHR
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

M24512-x, M24256-Bx
2.5
2.6
2.6.1
2.6.2
2.6.3
2.6.4
V
V
Supply voltage (V
Operating supply voltage V
Prior to selecting the memory and issuing instructions to it, a valid and stable V
within the specified [V
In order to secure a stable DC supply voltage, it is recommended to decouple the V
with a suitable capacitor (usually of the order of 10 nF to 100 nF) close to the V
package pins.
This voltage must remain stable and valid until the end of the transmission of the instruction
and, for a Write instruction, until the completion of the internal write cycle (t
Power-up conditions
When the power supply is turned on, V
vary faster than 1 V/µs.
Device reset
In order to prevent inadvertent write operations during power-up, a power on reset (POR)
circuit is included. At power-up (continuous rise in V
instruction until V
than the minimum V
over the POR threshold, the device is reset and enters the Standby Power mode. However,
the device must not be accessed until V
specified [V
In a similar way, during power-down (continuous decrease in V
below the power on reset threshold voltage, the device stops responding to any instruction
sent to it.
Power-down conditions
During power-down (where V
Power mode (mode reached after decoding a Stop condition, assuming that there is no
internal Write cycle in progress).
SS
SS
is the reference for the V
ground
CC
(min), V
CC
CC
reaches the power on reset threshold voltage (this threshold is lower
CC
CC
operating voltage defined in
(min), V
(max)] range.
CC
CC
CC
)
decreases continuously), the device must be in the Standby
supply voltage.
CC
CC
(max)] range must be applied (see
CC
CC
rises from V
reaches a valid and stable V
Table 7
CC
SS
), the device does not respond to any
to V
and
CC
CC
, the V
Table
), as soon as V
8). When V
Table 7
CC
CC
Signal description
rise time must not
voltage within the
W
).
and
CC
CC
CC
CC
/V
voltage
Table
CC
drops
SS
passes
line
9/35
8).