M24LR64-RDW6T/2 STMicroelectronics, M24LR64-RDW6T/2 Datasheet - Page 39

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M24LR64-RDW6T/2

Manufacturer Part Number
M24LR64-RDW6T/2
Description
13.56MHZ 64KBIT EEPROM 8 TSSOP
Manufacturer
STMicroelectronics
Datasheets

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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M24LR64-R
7.2
7.2.1
7.2.2
7.2.3
Initial dialog for vicinity cards
The dialog between the vicinity coupling device or VCD (commonly the “RF reader”) and the
vicinity integrated circuit card or VICC (M24LR64-R) takes place as follows:
These operations use the RF power transfer and communication signal interface described
below (see
(Reader Talk First).
Power transfer
Power is transferred to the M24LR64-R by radio frequency at 13.56 MHz via coupling
antennas in the M24LR64-R and the VCD. The RF operating field of the VCD is transformed
on the M24LR64-R antenna to an AC Voltage which is rectified, filtered and internally
regulated. The amplitude modulation (ASK) on this received signal is demodulated by the
ASK demodulator.
Frequency
The ISO 15693 standard defines the carrier frequency (f
13.56 MHz ±7 kHz.
Operating field
The M24LR64-R operates continuously between the minimum and maximum values of the
electromagnetic field H defined in
limits.
activation of the M24LR64-R by the RF operating field of the VCD
transmission of a command by the VCD
transmission of a response by the M24LR64-R
Power
transfer,
Frequency
Doc ID 15170 Rev 12
Table
and
105. The VCD has to generate a field within these
Operating
field). This technique is called RTF
C
) of the operating field as
RF device operation
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