M95010 ST Microelectronics, M95010 Datasheet - Page 7

• Manufacturer Part Number: M95010
• Description: 4Kbit / 2Kbit and 1Kbit Serial SPI Bus EEPROM With High Speed Clock
• Manufacturer: ST Microelectronics

Status Register
Figure 7 shows the position of the Status Register
in the control logic of the device. This register con-
tains a number of control bits and status bits, as
shown in Table 2.
Bits b7, b6, b5 and b4 are always read as 1.
WIP bit. The Write In Progress bit is a volatile
read-only bit that is automatically set and reset by
the internal logic of the device. When set to a 1, it
indicates that the memory is busy with a Write cy-
cle.
WEL bit. The Write Enable Latch bit is a volatile
read-only bit that is set and reset by specific in-
structions. When reset to 0, no WRITE or WRSR
instructions are accepted by the device.
BP1, BP0 bits. The Block Protect bits are non-
volatile read-write bits. These bits define the area
of memory that is protected against the execution
of Write cycles, as summarized in Table 3.
Table 2. Status Register Format
b7
1
1
1
M95040, M95020, M95010
Block Protect Bits
1
Write Enable Latch Bit
BP1
Write In Progress Bit
BP0
WEL
WIP
b0
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