M25PE40-VMN6TP Micron Technology Inc, M25PE40-VMN6TP Datasheet - Page 30
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M25PE40-VMN6TP
Manufacturer Part Number
M25PE40-VMN6TP
Description
Manufacturer
Micron Technology Inc
Datasheet
1.M25PE40-VMN6TP.pdf
(62 pages)
Specifications of M25PE40-VMN6TP
Cell Type
NOR
Density
4Mb
Access Time (max)
15ns
Interface Type
Serial (SPI)
Address Bus
1b
Operating Supply Voltage (typ)
3.3V
Operating Temp Range
-40C to 85C
Package Type
SOIC N
Sync/async
Synchronous
Operating Temperature Classification
Industrial
Operating Supply Voltage (min)
2.7V
Operating Supply Voltage (max)
3.6V
Word Size
8b
Number Of Words
512K
Supply Current
8mA
Mounting
Surface Mount
Pin Count
8
Lead Free Status / Rohs Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
M25PE40-VMN6TP
Manufacturer:
ST
Quantity:
20 000
Part Number:
M25PE40-VMN6TPBA
Manufacturer:
MICRON
Quantity:
20 000
Instructions
6.8
Note:
30/62
Read Lock Register (RDLR)
The Read Lock Register (RDLR) instruction is decoded only in the M25PE40 in the T9HX
process (see
The device is first selected by driving Chip Select (S) Low. The instruction code for the Read
Lock Register (RDLR) instruction is followed by a 3-byte address (A23-A0) pointing to any
location inside the concerned sector (or subsector). Each address bit is latched-in during
the rising edge of Serial Clock (C). Then the value of the Lock Register is shifted out on
Serial Data output (Q), each bit being shifted out, at a maximum frequency f
falling edge of Serial Clock (C).
The instruction sequence is shown in
The Read Lock Register (RDLR) instruction is terminated by driving Chip Select (S) High at
any time during data output.
Any Read Lock Register (RDLR) instruction, while an Erase, Program or Write cycle is in
progress, is rejected without having any effects on the cycle that is in progress.
Table 9.
Figure 14. Read Lock Register (RDLR) instruction sequence and data-out sequence
S
C
D
Q
b7-b4
Bit
b1
b0
Sector Write
Sector Lock
Bit name
0
Down
Lock Registers
Lock
Important note on page
1
High Impedance
2
Instruction
3
4
Value
5
‘1’
‘0’
‘1’
‘0’
6
7
The Write Lock and Lock Down bits cannot be changed. Once a
‘1’ is written to the Lock Down bit it cannot be cleared to ‘0’,
except by a reset or power-up.
The Write Lock and Lock Down bits can be changed by writing
new values to them (default value).
Write, Program and Erase operations in this sector will not be
executed. The memory contents will not be changed.
Write, Program and Erase operations in this sector are executed
and will modify the sector contents (default value).
MSB
23
8
22 21
9 10
Figure
24-bit address
6).
14.
Reserved
3
28 29 30 31 32 33 34 35
2
1
0
MSB
Function
7
6
Lock Register Out
5
4
3
36 37 38
2
1
C
, during the
0
39
M25PE40
AI10783