Datasheet

V850ES/JG3-H, V850ES/JH3-H CHAPTER 19 I
2
C BUS
R01UH0042EJ0500 Rev.5.00 Page 830 of 1513
Aug 12, 2011
(3) IIC flag registers 0 to 2 (IICF0 to IICF2)
The IICFn registers set the I
2
C0n operation mode and indicate the I
2
C bus status.
These registers can be read or written in 8-bit or 1-bit units. However, the STCFn and IICBSYn bits are read-only.
IICRSVn enables/disables the communication reservation function (see 19.14 Communication Reservation).
The initial value of the IICBSYn bit is set by using the STCENn bit (see 19.15 Cautions).
The IICRSVn and STCENn bits can be written only when operation of I
2
C0n is disabled (IICCn.IICEn bit = 0). After
operation is enabled, IICFn can be read (n = 0 to 2).
Reset sets these registers to 00H.