M24LR64-RDW6T/2 STMicroelectronics, M24LR64-RDW6T/2 Datasheet - Page 42
M24LR64-RDW6T/2
Manufacturer Part Number
M24LR64-RDW6T/2
Description
13.56MHZ 64KBIT EEPROM 8 TSSOP
Manufacturer
STMicroelectronics
Specifications of M24LR64-RDW6T/2
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STM32 Cortex-M3 Companion Products
Rf Type
Read / Write
Frequency
13.56MHz
Features
64 Kbit EEPROM
Package / Case
8-TSSOP
Memory Size
64 KB
Organization
2 K x 32
Interface Type
I2C
Maximum Clock Frequency
400 KHz
Access Time
900 ns
Supply Voltage (max)
5.5 V
Supply Voltage (min)
1.8 V
Maximum Operating Current
600 uA
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-10487-2
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Data rate and data coding
9
9.1
Figure 16. 1 out of 256 coding mode
42/128
Pulse
Modulated
Carrier
Data rate and data coding
The data coding implemented in the M24LR64-R uses pulse position modulation. Both data
coding modes that are described in the ISO15693 are supported by the M24LR64-R. The
selection is made by the VCD and indicated to the M24LR64-R within the start of frame
(SOF).
Data coding mode: 1 out of 256
The value of one single byte is represented by the position of one pause. The position of the
pause on 1 of 256 successive time periods of 18.88 µs (256/f
byte. In this case the transmission of one byte takes 4.833 ms and the resulting data rate is
1.65 Kbits/s (f
Figure 16
decimal) is sent by the VCD to the M24LR64-R.
The pause occurs during the second half of the position of the time period that determines
the value, as shown in
A pause during the first period transmits the data value 00h. A pause during the last period
transmit the data value FFh (255 decimal).
0 1
illustrates this pulse position modulation technique. In this figure, data E1h (225
2
3
C
. . . . . . . . .
. . . . . . . . .
/8192).
. . . . . . . .
Figure
Doc ID 15170 Rev 12
17.
2
2
5
. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .
4.833 ms
18.88 µs
9.44 µs
C
), determines the value of the
2
5
2
2
5
3
M24LR64-R
AI06656
2
5
4
2
5
5
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