M95010-W STMICROELECTRONICS [STMicroelectronics], M95010-W Datasheet - Page 9

• Manufacturer Part Number: M95010-W
• Description: 4 Kbit, 2 Kbit and 1 Kbit serial SPI bus EEPROM with high-speed clock
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

M95040, M95020, M95010
2.6
2.7
2.8
2.8.1
2.8.2
2.8.3
Write Protect (W)
This input signal is used to control whether the memory is write protected. When Write
Protect (W) is held low, writes to the memory are disabled, but other operations remain
enabled. Write Protect (W) must either be driven high or low, but must not be left floating.
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
instruction and, for a Write instruction, until the completion of the internal write cycle (t
order to secure a stable DC supply voltage, it is recommended to decouple the V
a suitable capacitor (usually of the order of 10 nF to 100 nF) close to the V
pins.
Power-up conditions
When the power supply is turned on, V
time, the Chip Select (S) line is not allowed to float but should follow the V
therefore recommended to connect S line to V
Figure
In addition, the Chip Select (S) input offers a built-in safety feature, as it is edge-sensitive as
well as level-sensitive: after power-up, the device does not become selected until a falling
edge has first been detected on Chip Select (S). This ensures that Chip Select (S) must
have been high, prior to going low to start the first operation.
The V
Device reset
In order to prevent inadvertent Write operations during power-up (continuous rise of V
power on reset (POR) circuit is included. At power-up, the device does not respond to any
instruction until V
lower than the minimum V
SS
SS
is the reference for the V
10). This voltage must remain stable and valid until the end of the transmission of the
CC
ground
3).
rise time must not vary faster than 1 V/µs.
CC
has reached the power on reset threshold voltage (this threshold is
CC
(min), V
CC
CC
CC
operating voltage defined in
)
supply voltage.
CC
CC
(max)] range must be applied (see
CC
rises continuously from V
CC
via a suitable pull-up resistor (see
Table
8,
Table 9
SS
Table
to V
Signal description
CC
and
CC
CC
8,
voltage. It is
/V
. During this
Table
Table 9
CC
SS
CC
package
voltage
line with
10).
CC
W
and
). In
9/42
), a