Section 17 I
2
C Bus Interface (IIC)
Rev. 3.00 Jan 25, 2006 page 473 of 872
REJ09B0286-0300
Section 17 I
2
C Bus Interface (IIC)
This LSI has an I
2
C bus interface (IIC) of two channels.
The I
2
C bus interface conforms to and provides a subset of the Philips I
2
C bus (inter-IC bus)
interface functions. Note however that the register configuration that controls the I
2
C bus differs
partly from the Philips configuration.
17.1
Features
•
Selection of I
2
C bus format or clocked synchronous serial 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
•
For I
2
C bus format, two ways of setting slave address
•
For I
2
C bus format, start and stop conditions generated automatically in master mode
•
For I
2
C bus format, selection of acknowledge output levels when receiving
•
For I
2
C bus format, automatic loading of acknowledge bit when transmitting
•
For I
2
C bus format, wait bit function in master mode
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.
•
For I
2
C bus format, wait function is available
A wait request can be generated by driving the SCL pin low after data transfer, excluding
acknowledgement.
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 16 internal clocks (in master mode)
IFIIC50A_000020020300
Summary of Contents for H8S/2158
Page 10: ...Rev 3 00 Jan 25 2006 page viii of lii...
Page 36: ...Rev 3 00 Jan 25 2006 page xxxiv of lii B Product Lineup 863 C Package Dimensions 864 Index 865...
Page 47: ...Rev 3 00 Jan 25 2006 page xlv of lii Appendix Figure C 1 Package Dimensions TBP 112A 864...
Page 54: ...Rev 3 00 Jan 25 2006 page lii of lii...
Page 70: ...Section 1 Overview Rev 3 00 Jan 25 2006 page 16 of 872 REJ09B0286 0300...
Page 118: ...Section 3 MCU Operating Modes Rev 3 00 Jan 25 2006 page 64 of 872 REJ09B0286 0300...
Page 126: ...Section 4 Exception Handling Rev 3 00 Jan 25 2006 page 72 of 872 REJ09B0286 0300...
Page 198: ...Section 6 Bus Controller Rev 3 00 Jan 25 2006 page 144 of 872 REJ09B0286 0300...
Page 326: ...Section 10 8 Bit PWM Timer PWM Rev 3 00 Jan 25 2006 page 272 of 872 REJ09B0286 0300...
Page 440: ...Section 15 Watchdog Timer WDT Rev 3 00 Jan 25 2006 page 386 of 872 REJ09B0286 0300...
Page 606: ...Section 17 I 2 C Bus Interface IIC Rev 3 00 Jan 25 2006 page 552 of 872 REJ09B0286 0300...
Page 742: ...Section 19 Multimedia Card Interface MCIF Rev 3 00 Jan 25 2006 page 688 of 872 REJ09B0286 0300...
Page 750: ...Section 21 D A Converter Rev 3 00 Jan 25 2006 page 696 of 872 REJ09B0286 0300...
Page 768: ...Section 22 A D Converter Rev 3 00 Jan 25 2006 page 714 of 872 REJ09B0286 0300...
Page 770: ...Section 23 RAM Rev 3 00 Jan 25 2006 page 716 of 872 REJ09B0286 0300...
Page 824: ...Section 26 Clock Pulse Generator Rev 3 00 Jan 25 2006 page 770 of 872 REJ09B0286 0300...
Page 844: ...Section 27 Power Down Modes Rev 3 00 Jan 25 2006 page 790 of 872 REJ09B0286 0300...
Page 878: ...Section 28 List of Registers Rev 3 00 Jan 25 2006 page 824 of 872 REJ09B0286 0300...
Page 926: ...Index Rev 3 00 Jan 25 2006 page 872 of 872 REJ09B0286 0300...