Datasheet

DocID022540 Rev 2 27/44
M95080-W M95080-R M95080-DF Instructions
43
6.8 Write Identification Page (available only in M95080-D
devices)
The Write Identification Page (WRID) instruction is used to write the Identification Page
(additional page of 32 bytes which can also be permanently locked in Read-only mode).
The Chip Select signal (S) is first driven low, and then the bits of the instruction byte,
address bytes, and at least one data byte are shifted in (MSB first) on Serial Data input (D).
Address bit A10 must be 0, other upper address bits are Don't Care (it might be easier to
define these bits as 0, as shown in
Table 4). The lower address bits [A4:A0] define the byte
address inside the identification page.
The self-timed Write cycle starts from the rising edge of Chip Select (S), and continues for a
period t
W
(as specified in Section 9: DC and AC parameters).
Figure 15. Write identification page sequence
C
D
Ai15967
S
Q
15
21 3 4 5 6 7 8 9 10 20 21 22 23 24 25 26 27
14 13 3 2 1 0
28 29 30
High impedance
Instruction 16-bit address
0
765432 0
1
Data byte
31