M24LR64-RDW6T2 STMICROELECTRONICS [STMicroelectronics], M24LR64-RDW6T2 Datasheet - Page 3
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M24LR64-RDW6T2
Manufacturer Part Number
M24LR64-RDW6T2
Description
64 Kbit EEPROM with password protection & dual interface
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.M24LR64-RDW6T2.pdf
(128 pages)
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M24LR64-R
6
7
8
9
10
11
5.8
5.9
5.10
5.11
5.12
5.13
5.14
User memory initial state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
RF device operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
7.1
7.2
Communication signal from VCD to M24LR64-R . . . . . . . . . . . . . . . . . 40
Data rate and data coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
9.1
9.2
9.3
9.4
Communications signal from M24LR64-R to VCD . . . . . . . . . . . . . . . . 47
10.1
10.2
10.3
Bit representation and coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
11.1
11.2
11.3
Read operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Random Address Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Current Address Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Sequential Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Acknowledge in Read mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Page Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Minimizing system delays by polling on ACK . . . . . . . . . . . . . . . . . . . . . . 34
Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Initial dialog for vicinity cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
7.2.1
7.2.2
7.2.3
Data coding mode: 1 out of 256 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Data coding mode: 1 out of 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
VCD to M24LR64-R frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Start of frame (SOF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Load modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Subcarrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Data rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Bit coding using one subcarrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
11.1.1
11.1.2
Bit coding using two subcarriers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
High data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Power transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Operating field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
High data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Low data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Doc ID 15170 Rev 10
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