HD64F3437TF16 Datasheet, PDF (694/752 Pages) Hitachi Semiconductor – 12 V must not be applied to the S-mask model (single-power-supply specification), as this may permanently damage the device.

ICCR—I²C Bus Control Register
H'D8
I²C
Bit
7
6
5
4
3
2
1
0
ICE
IEIC MST TRS ACK CKS2 CKS1 CKS0
Initial value
0
0
0
0
0
0
0
0
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Transfer Clock Select
Transfer Rate
IICX* CKS2 CKS1 CKS0 Clock
ø_P = 4 MHz ø_P = 5 MHz ø_P = 8 MHz ø_P = 10 MHz ø_P = 16 MHz
0
0
0
0 ø_P/28 143 kHz 179 kHz 286 kHz 357 kHz 571 kHz
1 ø_P/40 100 kHz 125 kHz 200 kHz 250 kHz 400 kHz
1
0 ø_P/48 83.3 kHz 104 kHz 167 kHz 208 kHz 333 kHz
1 ø_P/64 62.5 kHz 78.1 kHz 125 kHz 156 kHz 250 kHz
1
0
0 ø_P/80 50.0 kHz 62.5 kHz 100 kHz 125 kHz 200 kHz
1 ø_P/100 40.0 kHz 50.0 kHz 80.0 kHz 100 kHz 160 kHz
1
0 ø_P/112 35.7 kHz 44.6 kHz 71.4 kHz 89.3 kHz 143 kHz
1 ø_P/128 31.3 kHz 39.1 kHz 62.5 kHz 78.1 kHz 125 kHz
1
0
0
0 ø_P/56 71.4 kHz 89.3 kHz 143 kHz 179 kHz 286 kHz
1 ø_P/80 50.0 kHz 62.5 kHz 100 kHz 125 kHz 200 kHz
1
0 ø_P/96 41.7 kHz 52.1 kHz 83.3 kHz 104 kHz 167 kHz
1 ø_P/128 31.3 kHz 39.1 kHz 62.5 kHz 78.1 kHz 125 kHz
1
0
0 ø_P/160 25.0 kHz 31.3 kHz 50.0 kHz 62.5 kHz 100 kHz
1 ø_P/200 20.0 kHz 25.0 kHz 40.0 kHz 50.0 kHz 80.0 kHz
1
0 ø_P/224 17.9 kHz 22.3 kHz 35.7 kHz 44.6 kHz 71.4 kHz
1 ø_P/256 15.6 kHz 19.5 kHz 31.3 kHz 39.1 kHz 62.5 kHz
Note: When ø_P = ø.
The shaded setting exceeds the maximum transfer rate in the standard I²C bus
specifications.
* IICX is bit 5 of the serial timer control register (STCR).
Acknowledgement Mode Select
0 Acknowledgement mode
1 Serial mode
Master/Slave Select and Transmit/Receive Select
0 0 Slave receive mode
1 Slave transmit mode
1 0 Master receive mode
1 Master transmit mode
I²C Bus Interface Interrupt Enable
0 Interrupts disabled
1 Interrupts enabled
I²C Bus Interface Enable
0 Interface module disabled, with pins SCL and SDA operating as ports
1 Interface module enabled for transfer operations, with pins SCL and SDA capable of bus drive
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