sri4k STMicroelectronics, sri4k Datasheet - Page 10

• Manufacturer Part Number: sri4k
• Description: 13.56 Mhz Short-range Contactless Memory Chip With 4096-bit Eeprom And Anticollision Functions
• Manufacturer: STMicroelectronics

Data transfer
3.1.2
3.1.3
10/49
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
ETU
Bit
b
b
to b
–
–
–
–
–
–
–
0
9
8
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.
0
b0
0
b0
Stop bit used to indicate the end of a character
Start bit used to synchronize the transmission
Information Byte (command, address or data)
Bit description
Request start of frame
Request end of frame
0
0
b1
b1
Figure 6
Figure 5
0
0
b2
b2
Description
is composed of:
b3
0
0
b3
is composed of:
0
b4
0
b4
0
b5
0
b5
0
b6
0
b6
0
b7
0
b7
The information byte is sent with the
0
b8
b8
0
least significant bit first
0
0
b9
b9
Value
b
b
0
9
1
b10
= 0
= 1
1
b11
SRI4K
ai07666
ai07665