HD64F2638F20J Datasheet, PDF (599/1512 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
Section 15 I²C Bus Interface [Option]
(Only for the H8S/2638, H8S/2639, and H8S/2630)
15.1.4 Register Configuration
Table 15-2 summarizes the registers of the I²C bus interface.
Table 15-2 Register Configuration
Channel
0
1
Name
I²C bus control register
I²C bus status register
I²C bus data register
I²C bus mode register
Slave address register
Second slave address
register
I²C bus control register
I²C bus status register
I²C bus data register
I²C bus mode register
Slave address register
Second slave address
register
Abbreviation
ICCR0
ICSR0
ICDR0
ICMR0
SAR0
SARX0
ICCR1
ICSR1
ICDR1
ICMR1
SAR1
SARX1
R/(W)
R/(W)*⁴
R/(W)*⁴
Initial Value
H'01
H'00
R/W
—
R/W
H'00
R/W
H'00
R/W
H'01
R/(W)*⁴ H'01
R/(W)*⁴ H'00
R/W
—
R/W
H'00
R/W
H'00
R/W
H'01
Address^*1
H'FF78^*3
H'FF79^*3
H'FF7E^*2*3
H'FF7F^*2*3
H'FF7F^*2*3
H'FF7E^*2*3
H'FF80^*3
H'FF81^*3
H'FF86^*2*3
H'FF87^*2*3
H'FF87^*2*3
H'FF86^*2*3
Common Serial control register X SCRX
R/W
H'08
H'FDB4
DDC switch register
DDCSWR
R/W
H'0F
H'FDB5
Module stop control
register B
MSTPCRB
R/W
H'FF
H'FDE9
Notes: 1. Lower 16 bits of the address.
2. The register that can be written or read depends on the ICE bit in the I²C bus control
register. The slave address register can be accessed when ICE = 0, and the I²C bus
mode register can be accessed when ICE = 1.
3. The I²C bus interface registers are assigned to the same addresses as other registers.
Register selection is performed by means of the IICE bit in the serial control register X
(SCRX).
4. Only 0 can be written, to clear the flag.
REJ09B0103-0800 Rev. 8.00
May 28, 2010
Page 549 of 1458