m95512-r STMicroelectronics, m95512-r Datasheet - Page 12

• Manufacturer Part Number: m95512-r
• Description: 512kbit Serial Spi Bus Eeprom With High Speed Clock
• Manufacturer: STMicroelectronics

Operating features
4
4.1
4.1.1
4.1.2
4.1.3
12/39
Operating features
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
Select (S) line is not allowed to float but should follow the V
recommended to connect the S line to V
In addition, the Chip Select (S) input offers a built-in safety feature, as the S input 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
Power-up and 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
When V
Status register state:
Standby Power mode
deselected (at next Power-up, a falling edge is required on Chip Select (S) before any
instructions can be started)
not in the Hold condition
the Write Enable Latch (WEL) is reset to 0
Write In Progress (WIP) is reset to 0. The SRWD, BP1 and BP0 bits of the Status
Register are unchanged from the previous power-down (they are non-volatile bits)
CC
CC
rise time must not vary faster than 1 V/µs.
has passed the POR threshold, the device is reset and in the following state:
CC
has reached the Power On Reset threshold voltage (this threshold is
CC
(min), V
CC
CC
operating voltage defined in
)
CC
(max)] range must be applied (see
CC
CC
CC
rises from V
via a suitable pull-up resistor.
CC
SS
), the device does not respond to any
to V
Table 7
CC
CC
voltage, it is therefore
. During this time, the Chip
and
M95512-W, M95512-R
Table 7
Table
W
8).
).
and
CC
CC
Table
/V
voltage
CC
SS
line
8.).