M24LR64-RDW6T/2 STMicroelectronics, M24LR64-RDW6T/2 Datasheet - Page 40
M24LR64-RDW6T/2
Manufacturer Part Number
M24LR64-RDW6T/2
Description
13.56MHZ 64KBIT EEPROM 8 TSSOP
Manufacturer
STMicroelectronics
Specifications of M24LR64-RDW6T/2
Featured Product
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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Communication signal from VCD to M24LR64-R
8
40/128
Communication signal from VCD to M24LR64-R
Communications between the VCD and the M24LR64-R takes place using the modulation
principle of ASK (Amplitude Shift Keying). Two modulation indexes are used, 10% and
100%. The M24LR64-R decodes both. The VCD determines which index is used.
The modulation index is defined as [a – b]/[a + b] where a is the peak signal amplitude and
b, the minimum signal amplitude of the carrier frequency.
Depending on the choice made by the VCD, a “pause” will be created as described in
Figure 14
The M24LR64-R is operational for any degree of modulation index from between 10% and
30%.
Figure 14. 100% modulation waveform
The clock recovery shall be operational after t
105%
95%
60%
and
5%
Amplitude
a
b
Carrier
Figure
15.
Doc ID 15170 Rev 12
t
1
t
2
t
4
4
t
max.
3
t
t
t
t
t
1
2
3
4
Min (µs)
ai15793
6,0
2,1
0
0
M24LR64-R
Max (µs)
9,44
4,5
0,8
t
1
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