M24LR64-RMR6T/2 STMicroelectronics, M24LR64-RMR6T/2 Datasheet - Page 2

• Manufacturer Part Number: M24LR64-RMR6T/2
• Description: EEPROM Dual Interface 64k EEPROM ISO15693-I2C
• Manufacturer: STMicroelectronics

Specifications of M24LR64-RMR6T/2

• 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
• Memory Size: 64 KB
• Package / Case: DFPN-8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Description
1
2/10
Description
The M24LR64-R device is a dual-interface, electrically erasable programmable memory
(EEPROM). It features an I
also a contactless memory powered by the received carrier electromagnetic wave. The
M24LR64-R is organized as 8192 × 8 bits in the I
15693 and ISO 18000-3 mode 1 RF mode.
Figure 1.
I
devices carry a built-in 4-bit device type identifier code (1010) in accordance with the I
bus definition.
The device behaves as a slave in the I
by the serial clock. Read and Write operations are initiated by a Start condition, generated
by the bus master. The Start condition is followed by a device select code and Read/Write
bit (RW), terminated by an acknowledge bit.
When writing data to the memory, the device inserts an acknowledge bit during the 9
time, following the bus master’s 8-bit transmission. When data is read by the bus master, the
bus master acknowledges the receipt of the data byte in the same way. Data transfers are
terminated by a Stop condition after an Ack for Write, and after a NoAck for Read.
In the ISO15693/ISO18000-3 mode 1 RF mode, the M24LR64-R is accessed via the
13.56 MHz carrier electromagnetic wave on which incoming data are demodulated from the
received signal amplitude modulation (ASK: amplitude shift keying). The received ASK wave
is 10% or 100% modulated with a data rate of 1.6 Kbit/s using the 1/256 pulse coding mode
or a data rate of 26 Kbit/s using the 1/4 pulse coding mode.
Outgoing data are generated by the M24LR64-R load variation using Manchester coding
with one or two subcarrier frequencies at 423 kHz and 484 kHz. Data are transferred from
the M24LR64-R at 6.6 Kbit/s in low data rate mode and 26 Kbit/s high data rate mode. The
M24LR64-R supports the 53 Kbit/s in high data rate mode in one subcarrier frequency at
423 kHz.
The M24LR64-R follows the ISO 15693 and ISO 18000-3 mode 1 recommendation for
radio-frequency power and signal interface.
2
C uses a two-wire serial interface, comprising a bidirectional data line and a clock line. The
Logic diagram
2
E0-E1
C interface and can be operated from a V
SCL
Doc ID 15171 Rev 4
2
2
C protocol, with all memory operations synchronized
V CC
M24LR64-R
V SS
2
C mode and as 2048 × 32 bits in the ISO
SDA
AC0
AC1
CC
power supply. It is
M24LR64-R
AI15106b
th
2
bit
C