m24256-br STMicroelectronics, m24256-br Datasheet - Page 9

• Manufacturer Part Number: m24256-br
• Description: 512 Kbit And 256 Kbit Serial I2c Bus Eeprom With Three Chip Enable Lines
• Manufacturer: STMicroelectronics

M24512-W, M24512-R, M24512-HR, M24256-BW, M24256-BR
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 of V
instruction until the V
is lower than the minimum V
passes over the POR threshold, the device is reset and in the Standby Power mode
In a similar way, during power-down (continuous decrease in V
below the power on reset threshold voltage, the device is reset and 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
CC
has reached the Power On Reset threshold voltage (this threshold
(min), V
CC
CC
CC
CC
)
operating voltage defined in
decreases continuously), the device must be in the Standby
supply voltage.
CC
CC
(max)] range must be applied (see
CC
rises from V
CC
SS
), the device does not respond to any
to V
Table 7
CC
CC
, the V
), as soon as V
and
Table 7
CC
Signal description
Table
rise time must not
W
).
and
8). Until V
CC
CC
CC
/V
voltage
Table
CC
drops
SS
line
9/35
8).
CC