h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 609

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

15.2.5
ICCR is an 8-bit readable/writable register that enables or disables the I
disables interrupts, selects master or slave mode and transmission or reception, enables or disables
acknowledgement, confirms the I
performs interrupt flag confirmation.
ICCR is initialized to H'01 by a reset and in hardware standby mode.
Bit 7—I
used. When ICE is set to 1, port pins function as SCL and SDA input/output pins and transfer
operations are enabled. When ICE is cleared to 0, the I
internal states are cleared.
The SAR and SARX registers can be accessed when ICE is 0. The ICMR and ICDR registers can
be accessed when ICE is 1.
Bit 7
ICE
0
1
2
*
C Bus Interface Enable (ICE): Selects whether or not the I
Section 15 I
I
2
C Bus Control Register (ICCR)
Description
I
I
SAR and SARX can be accessed
I
driving the bus)
ICMR and ICDR can be accessed
2
2
2
C bus interface module disabled, with SCL and SDA signal pins set to port function
C bus interface module internal states initialized
C bus interface module enabled for transfer operations (pins SCL and SCA are
2
C Bus Interface [Option] (Only for the H8S/2638, H8S/2639, and H8S/2630)
2
C bus interface bus status, issues start/stop conditions, and
2
C bus interface module is halted and its
Rev. 6.00 Feb 22, 2005 page 549 of 1484
2
C bus interface is to be
2
C bus interface, enables or
REJ09B0103-0600
(Initial value)
*