STMicroelectronics M95M02-DRMN6TP Memory IC M95M02-DRMN6TP Ficha De Dados
Códigos do produto
M95M02-DRMN6TP
DocID18203 Rev 8
M95M02-DR
Instructions
6.7
Read Identification Page
The Identification Page (256 bytes) is an additional page which can be written and (later)
permanently locked in Read-only mode.
permanently locked in Read-only mode.
The Chip Select signal (S) is first driven low, the bits of the instruction byte and address
bytes are then shifted in, on Serial Data Input (D). Address bit A10 must be 0, upper address
bits are Don't Care, and the data byte pointed to by the lower address bits [A7:A0] is shifted
out on Serial Data Output (Q). If Chip Select (S) continues to be driven low, the internal
address register is automatically incremented, and the byte of data at the new address is
shifted out.
bytes are then shifted in, on Serial Data Input (D). Address bit A10 must be 0, upper address
bits are Don't Care, and the data byte pointed to by the lower address bits [A7:A0] is shifted
out on Serial Data Output (Q). If Chip Select (S) continues to be driven low, the internal
address register is automatically incremented, and the byte of data at the new address is
shifted out.
The number of bytes to read in the ID page must not exceed the page boundary, otherwise
unexpected data is read (e.g.: when reading the ID page from location 90d, the number of
bytes should be less than or equal to 166d, as the ID page boundary is 256 bytes).
unexpected data is read (e.g.: when reading the ID page from location 90d, the number of
bytes should be less than or equal to 166d, as the ID page boundary is 256 bytes).
The read cycle is terminated by driving Chip Select (S) high. The rising edge of the Chip
Select (S) signal can occur at any time during the cycle. The first byte addressed can be any
byte within any page.
Select (S) signal can occur at any time during the cycle. The first byte addressed can be any
byte within any page.
The instruction is not accepted, and is not executed, if a write cycle is currently in progress.
Figure 15. Read Identification Page sequence
MS30907V1
C
D
S
Q
23
2
1
3
4
5
6
7
8
9 10
28 29 30 31 32 33 34 35
22 21
3
2
1
0
36 37 38
7
6
5
4
3
1
7
0
High impedance
Data Out 1
Instruction
24-bit address
0
MSB
MSB
2
39
Data Out 2