M95128-MN3TP/P STMICROELECTRONICS [STMicroelectronics], M95128-MN3TP/P Datasheet - Page 10

• Manufacturer Part Number: M95128-MN3TP/P
• Description: 128 Kbit serial SPI bus EEPROM with high speed clock
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Signal description
3.6
3.7
3.8
3.8.1
3.8.2
10/44
Write Protect (W)
The main purpose of this input signal is to freeze the size of the area of memory that is
protected against Write instructions (as specified by the values in the BP1 and BP0 bits of
the Status Register).
This pin must be driven either high or low, and must be stable during all write instructions.
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.
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 the internal reset threshold voltage (this threshold is defined in DC tables 12, 13,
and
When V
●
●
●
When V
Power mode. The device must not be accessed until V
voltage within the specified [V
Table
SS
SS
15
is the reference for the V
in Standby Power mode
deselected (note that, to be executed, an instruction must be preceded by a falling
edge on Chip Select (S))
Status register values:
–
–
–
9). This voltage must remain stable and valid until the end of the transmission of the
9.
ground
as V
CC
CC
the Write Enable Latch (WEL) bit is reset to 0
the Write In Progress (WIP) bit is reset to 0
the SRWD, BP1 and BP0 bits remain unchanged (non-volatile bits).
passes over the POR threshold, the device is reset and in the following state:
passes over the POR threshold, the device is reset and enters the Standby
RES
.
CC
(min), V
CC
CC
CC
)
Doc ID 5798 Rev 13
CC
(min), V
supply voltage.
CC
(max)] range must be applied (see
CC
(max)] range defined in
CC
reaches a valid and stable V
M95128, M95128-W, M95128-R
Table
Table
7,
CC
Table 8
7,
/V
Table 8
CC
SS
CC
package
voltage
line with
and
CC
W
CC
and
). In
14