M24128-BF STMICROELECTRONICS [STMicroelectronics], M24128-BF Datasheet - Page 9

• Manufacturer Part Number: M24128-BF
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

M24128, M24C64, M24C32
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 1V/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 of V
instruction until V
lower than the minimum V
passes over the POR threshold, the device is reset and in Standby Power mode.
In a similar way, during power-down (continuous decay of V
the POR threshold voltage, the device is reset and stops responding to any instruction sent
to it.
Power-down conditions
During power-down (continuous decay of V
(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
has reached the power on reset threshold voltage (this threshold is
CC
(min), V
CC
CC
CC
operating voltage defined in
)
CC
supply voltage.
(max)] range must be applied (see
CC
CC
rises from V
CC
), the device must be in Standby Power mode
CC
SS
), the device does not respond to any
to V
Table 9
CC
CC
), as soon as V
. The V
and
Table 9
Table
CC
Signal description
rise time must not
W
CC
10). Until V
).
and
CC
drops below
CC
Table
/V
voltage
CC
SS
line
10).
CC
9/38