M24LR64-RMN6/2 STMicroelectronics, M24LR64-RMN6/2 Datasheet - Page 23
M24LR64-RMN6/2
Manufacturer Part Number
M24LR64-RMN6/2
Description
EEPROM, 64K, DUAL INTERFACE, 8SOIC
Manufacturer
STMicroelectronics
Datasheet
1.M24LR64-RDW62.pdf
(128 pages)
Specifications of M24LR64-RMN6/2
Memory Size
64Kbit
Clock Frequency
400kHz
Access Time
900ns
Supply Voltage Range
1.8V To 5V
Memory Case Style
SOIC
No. Of Pins
8
Operating Temperature Range
-40°C To +85°C
Svhc
No SVHC
Memory Configuration
8192 X 8, 2048 X 32
Interface Type
I2C, Serial, 2-Wire
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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M24LR64-R
4
4.1
System memory area
M24LR64-R RF block security
The M24LR64-R provides a special protection mechanism based on passwords. Each
memory sector of the M24LR64-R can be individually protected by one out of three available
passwords, and each sector can also have Read/Write access conditions set.
Each memory sector of the M24LR64-R is assigned with a Sector security status byte
including a Sector Lock bit, two Password Control bits and two Read/Write protection bits as
shown in
can be read using the Read Single Block and Read Multiple Block commands with the
Option_flag set to ‘1’.
On delivery, the default value of the SSS bytes is reset to 00h.
Table 6.
Table 7.
When the Sector Lock bit is set to ‘1’, for instance by issuing a Lock-sector Password
command, the 2 Read/Write protection bits (b
the sector as described in
E2 = 1
E2 = 1
E2 = 1
E2 = 1
E2 = 1
E2 = 1
E2 = 1
E2 = 1
E2 = 1
E2 = 1
E2 = 1
E2 = 1
E2 = 1
E2 = 1
E2 = 1
E2 = 1
b
0
7
I
2
C byte address
Table
Sector Security Status Byte area
Sector security status byte organization
7.
b
0
6
Table 6
12
16
20
24
28
32
36
40
44
48
52
56
60
0
4
8
describes the organization of the Sector security status byte which
Table
b
0
5
Doc ID 15170 Rev 11
Bits [31:24]
8.
SSS 11
SSS 15
SSS 19
SSS 23
SSS 27
SSS 31
SSS 35
SSS 39
SSS 43
SSS 47
SSS 51
SSS 55
SSS 59
SSS 63
SSS 3
SSS 7
Password Control bits
b
4
1
, b
Bits [23:16]
2
SSS 14
SSS 18
SSS 22
SSS 26
SSS 30
SSS 34
SSS 38
SSS 42
SSS 46
SSS 50
SSS 54
SSS 58
SSS 62
SSS 10
SSS 2
SSS 6
) are used to set the Read/Write access of
b
3
Read / Write protection
b
Bits [15:8]
2
SSS 13
SSS 17
SSS 21
SSS 25
SSS 29
SSS 33
SSS 37
SSS 41
SSS 45
SSS 49
SSS 53
SSS 57
SSS 61
SSS 1
SSS 5
SSS 9
bits
System memory area
b
1
Bits [7:0]
SSS 12
SSS 16
SSS 20
SSS 24
SSS 28
SSS 32
SSS 36
SSS 40
SSS 44
SSS 48
SSS 52
SSS 56
SSS 60
SSS 0
SSS 4
SSS 8
Sector
Lock
b
23/128
0
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