CR14_10 STMICROELECTRONICS [STMicroelectronics], CR14_10 Datasheet - Page 21

• Manufacturer Part Number: CR14_10
• Description: ISO14443 type-B contactless coupler chip with anti-collision and CRC management
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

CR14
Figure 9.
I²C CURRENT ADDRESS READ
I²C RANDOM ADDRESS READ
After reading each Byte, the CR14 waits for the master to send an ACK during the 9
time. If the master does not return an ACK within this time, the CR14 terminates the data
transfer and switches to stand-by mode.
CR14 I²C read modes sequences
BUS Master
CR14 READ
BUS Slave
BUS Master
CR14 READ
BUS Slave
DEV SEL
DEV SEL
R/W
R/W
ACK
ACK
ADDRESS
DATA 1
Doc ID 11922 Rev 2
ACK
ACK
DEV SEL
DATA 2
ACK
R/W
ACK
DATA 3
DATA 1
ACK
ACK
CR14 I²C protocol description
DATA 4
DATA 2
ACK
ACK
DATA N
DATA N
NoACK
NoACK
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