m24256-bw STMicroelectronics, m24256-bw Datasheet - Page 9

• Manufacturer Part Number: m24256-bw
• Description: 512 Kbit And 256 Kbit Serial I?c Bus Eeprom With Three Chip Enable Lines
• Manufacturer: STMicroelectronics

M24512-Dx, 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
Table
V
V
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
V
and the rise time must not 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, the device does not respond to any instruction until V
reaches an internal reset threshold voltage. This threshold is lower than the minimum V
operating voltage defined in
When V
Power mode. However, the device must not be accessed until V
stable 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
CC
CC
CC
SS
/V
is the reference for the V
line with a suitable capacitor (usually of the order of 10 nF to 100 nF) close to the
has to rise continuously from 0 V up to V
11). In order to secure a stable DC supply voltage, it is recommended to decouple the
SS
ground
CC
CC
package pins.
passes over the POR threshold, the device is reset and enters the Standby
voltage within the specified [V
CC
(min), V
CC
Table
CC
CC
)
Doc ID 6757 Rev 15
CC
decreases continuously), the device must be in the Standby
supply voltage.
9,
(max)] range must be applied (see
CC
Table
CC
10, and
(min), V
CC
(min) (see
Table
CC
(max)] range.
11.
Table
CC
CC
9,
), as soon as V
reaches a valid and
Table
Table
Signal description
10, and
W
9,
).
Table
CC
CC
Table
voltage
drops
10, and
CC
11),
CC
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