sri512 STMicroelectronics, sri512 Datasheet - Page 10

• Manufacturer Part Number: sri512
• Description: 13.56-mhz Short-range Contactless Memory Chip With 512-bit Eeprom And Anti-collision Functions
• Manufacturer: STMicroelectronics

Data transfer
3.1.2
3.1.3
10/50
Table 2.
Request Start Of Frame
The SOF described in
Figure 5.
Request End Of Frame
The EOF shown in
Figure 6.
b
ETU
1
Bit
b
b
one falling edge,
followed by 10 ETUs at logic-0,
followed by a single rising edge,
followed by at least 2 ETUs (and at most 3) at logic-1.
one falling edge,
followed by 10 ETUs at logic-0,
followed by a single rising edge.
to b
0
9
ETU
8
0
b0
Start bit used to synchronize the transmission
Information Byte (command, address or data)
Stop bit used to indicate the end of a character
Bit description
Request Start Of Frame
Request End Of Frame
0
b0
0
b1
Figure 6
0
b1
Figure 5
0
b2
0
b2
is composed of:
Description
0
b3
is composed of:
b3
0
0
b4
0
b4
0
b5
0
b5
0
b6
0
b6
0
b7
0
b7
The information byte is sent with
the least significant bit first
0
b8
0
b8
0
b9
0
b9
b
b
Value
0
9
= 0
= 1
1
b10
ai07666
ai07665
SRI512
1
b11