Section 18 I
2
C Bus Interface (IIC)
Rev. 1.00 Mar. 12, 2008 Page 585 of 1178
REJ09B0403-0100
Section 18 I
2
C Bus Interface (IIC)
This LSI has six-channels of I
2
C bus interface (IIC). The I
2
C bus interface conforms to and
provides a subset of the Philips I
2
C bus (inter-IC bus) interface functions. However, the register
configuration that controls the I
2
C bus differs partly from the Philips configuration.
18.1 Features
•
Selection of addressing format or non-addressing format
I
2
C bus format: addressing format with acknowledge bit, for master/slave operation
Clocked synchronous serial format: non-addressing format without acknowledge bit, for
master operation only
•
Conforms to Philips I
2
C bus interface (I
2
C bus format)
•
Two ways of setting slave address (I
2
C bus format)
•
Start and stop conditions generated automatically in master mode (I
2
C bus format)
•
Selection of acknowledge output levels when receiving (I
2
C bus format)
•
Automatic loading of acknowledge bit when transmitting (I
2
C bus format)
•
Wait function in master mode (I
2
C bus format)
A wait can be inserted by driving the SCL pin low after data transfer, excluding
acknowledgement.
The wait can be cleared by clearing the interrupt flag.
•
Wait function (I
2
C bus format)
A wait request can be generated by driving the SCL pin low after data transfer.
The wait request is cleared when the next transfer becomes possible.
•
Interrupt sources
Data transfer end (including when a transition to transmit mode with I
2
C bus format occurs,
when ICDR data is transferred, or during a wait state)
Address match: when any slave address matches or the general call address is received in
slave receive mode with I
2
C bus format (including address reception after loss of master
arbitration)
Arbitration loss
Start condition detection (in master mode)
Stop condition detection (in slave mode)
•
Selection of 32 internal clocks (in master mode)
•
Direct bus drive
Summary of Contents for H8S Family
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Page 70: ...Section 1 Overview Rev 1 00 Mar 12 2008 Page 22 of 1178 REJ09B0403 0100...
Page 108: ...Section 2 CPU Rev 1 00 Mar 12 2008 Page 60 of 1178 REJ09B0403 0100...
Page 116: ...Section 3 MCU Operating Modes Rev 1 00 Mar 12 2008 Page 68 of 1178 REJ09B0403 0100...
Page 152: ...Section 5 Interrupt Controller Rev 1 00 Mar 12 2008 Page 104 of 1178 REJ09B0403 0100...
Page 206: ...Section 6 Bus Controller BSC Rev 1 00 Mar 12 2008 Page 158 of 1178 REJ09B0403 0100...
Page 420: ...Section 9 14 Bit PWM Timer PWMX Rev 1 00 Mar 12 2008 Page 372 of 1178 REJ09B0403 0100...
Page 476: ...Section 12 Watchdog Timer WDT Rev 1 00 Mar 12 2008 Page 428 of 1178 REJ09B0403 0100...
Page 552: ...Section 14 CRC Operation Circuit CRC Rev 1 00 Mar 12 2008 Page 504 of 1178 REJ09B0403 0100...
Page 712: ...Section 18 I2 C Bus Interface IIC Rev 1 00 Mar 12 2008 Page 664 of 1178 REJ09B0403 0100...
Page 804: ...Section 19 LPC Interface LPC Rev 1 00 Mar 12 2008 Page 756 of 1178 REJ09B0403 0100...
Page 838: ...Section 20 Ethernet Controller EtherC Rev 1 00 Mar 12 2008 Page 790 of 1178 REJ09B0403 0100...
Page 964: ...Section 24 RAM Rev 1 00 Mar 12 2008 Page 916 of 1178 REJ09B0403 0100...
Page 1066: ...Section 25 Flash Memory Rev 1 00 Mar 12 2008 Page 1018 of 1178 REJ09B0403 0100...
Page 1098: ...Section 26 Boundary Scan JTAG Rev 1 00 Mar 12 2008 Page 1050 of 1178 REJ09B0403 0100...
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