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CHAPTER 18 I
2
C BUS MODE (
µ
PD784225Y SUBSERIES ONLY)
User’s Manual U12697EJ3V0UM
18.3 Control Registers
The I
2
C bus mode is controlled by the following three registers.
•
I
2
C bus control register 0 (IICC0)
•
I
2
C bus status register 0 (IICS0)
•
Prescaler mode register 0 for the serial clock (SPRM0)
The following registers are also used.
•
Serial shift register 0 (IIC0)
•
Slave address register 0 (SVA0)
(1) I
2
C bus control register 0 (IICC0)
The IICC0 register enables and disables the I
2
C bus mode, sets the wait timing, and sets other I
2
C bus mode
operations.
IICC0 is set by a 1-bit or 8-bit memory manipulation instruction.
RESET input sets IICC0 to 00H.
