GMS87C4060 Datasheet, PDF (71/102 Pages) Hynix Semiconductor – 8-BIT SINGLE-CHIP MICROCONTROLLERS

PRELIMINARY
GMS81C4040/87C4060
Address data communication
The first transmitted data from master is compared with
I²C address register (ICAR, 00D8_H). At this time R/W is
not compared but it determines next data operation. i.e,
transmitting or receiving data
Master -> Slave (with 7bit address)
START Slave addr. ACK Data
7bit R/W
(“0”)
ACK Data ACK _STOP
/ACK
Slave -> Master (with 7bit address)
START Slave addr. ACK Data
7bit R/W
(“1”)
ACK _{Data ACK STOP}
Figure 18-11 Address data communication format
Data block from master to slave
Data block from slave to master
Nov. 1999 Ver 1.0
PRELIMINARY
67