h8s-2169 Renesas Electronics Corporation., h8s-2169 Datasheet - Page 547

• Manufacturer Part Number: h8s-2169
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

16.2.7
STCR is an 8-bit readable/writable register that controls register access, the I
mode (when the on-chip IIC option is included), and on-chip flash memory, and selects the TCNT
input clock source. For details of functions not related to the I
Serial Timer Control Register (STCR), and the descriptions of the relevant modules. If a module
controlled by STCR is not used, do not write 1 to the corresponding bit.
STCR is initialized to H'00 by a reset and in hardware standby mode.
Bit 7—I
output buffer as SCL and SDA. This bit is used when implementing the I
only.
Bits 6 and 5—I
to CKS0 in ICMR of IIC1, selects the transfer rate in master mode. For details, see section 16.2.4,
I
Bit 4—I
registers (ICCR, ICSR, ICDR/SARX, ICMR/SAR).
Bit 7
IICS
0
1
Bit 4
IICE
0
1
2
C Bus Mode Register (ICMR).
Bit
Initial value
Read/Write
2
2
C Extra Buffer Select (IICS): Designates bits 7 to 4 of port A as the same kind of
C Master Enable (IICE): Controls CPU access to the I
Serial/Timer Control Register (STCR)
Description
PA7 to PA4 are normal I/O pins
PA7 to PA4 are I/O pins with bus driving capability
Description
CPU access to I
CPU access to I
2
C Transfer Select 1 and 0 (IICX1, IICX0): These bits, together with bits CKS2
IICS
R/W
7
0
2
2
IICX1
C bus interface data and control registers is disabled
C bus interface data and control registers is enabled
R/W
6
0
IICX0
R/W
5
0
IICE
R/W
4
0
Rev. 3.00 Jan 18, 2006 page 519 of 1044
FLSHE
R/W
3
0
2
C bus interface, see section 3.2.4,
2
C bus interface data and control
R/W
Section 16 I
—
2
0
2
C interface by software
2
C interface operating
ICKS1
R/W
REJ09B0280-0300
1
0
2
C Bus Interface
(Initial value)
(Initial value)
ICKS0
R/W
0
0