CHAPTER 12 SERIAL INTERFACE FUNCTION
Preliminary User’s Manual U15905EJ1V0UD
348
12.4.2 I
2
C control registers
I
2
C is controlled by the following registers.
• IIC control register (IICC)
• IIC status register (IICS)
• IIC clock selection register (IICCL)
• IIC function expansion register (IICX)
The following registers are also used.
• IIC shift register (IIC)
• Slave address register (SVA)
(1) IIC control register (IICC)
The IICC register is used to enable/disable I
2
C operations, set wait timing, and set other I
2
C operations.
The IICC register can be set by an 8-bit or 1-bit memory manipulation instruction.
RESET input clears the IICC register to 00H.
Caution
When using the I
2
C bus mode, set the port in the control mode (refer to 12.1.2 CSI0 and
selecting I
2
C mode).
Also set the N-ch open-drain output mode (refer to 4.3.5 (2) (e) Port function register 4
(PF4)).
Содержание V850ES/SA2 UPD703201
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