h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 373

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

12.2.6
STCR is an 8-bit readable/writable register that controls register access, the IIC operating mode
(when the on-chip IIC option is included), and on-chip flash memory (in F-ZTAT versions), and
also selects the TCNT input clock.
For details on functions not related to the 8-bit timers, see section 3.2.4, 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—Reserved: Do not write 1 to this bit.
Bits 6 to 4—I
interface when the IIC option is included on-chip. See section 16.2.7, Serial Timer Control
Register (STCR), for details.
Bit 3—Flash Memory Control Register Enable (FLSHE): Controls CPU access to the flash
memory control registers, the power-down mode control registers, and the supporting module
control registers. See section 3.2.4, Serial Timer Control Register (STCR), for details.
Bit 2—Reserved: Do not write 1 to this bit.
Bits 1 and 0—Internal Clock Select 1 and 0 (ICKS1, ICKS0): These bits, together with bits
CKS2 to CKS0 in TCR, select the clock to be input to TCNT. For details, see section 12.2.4,
Timer Control Register.
Bit
Initial value
Read/Write
Serial Timer Control Register (STCR)
2
C Control (IICX1, IICX0, IICE): These bits control the operation of the I
R/W
—
7
0
IICX1
R/W
6
0
IICX0
R/W
5
0
IICE
R/W
4
0
Rev. 4.00 Jun 06, 2006 page 319 of 1004
FLSHE
R/W
3
0
R/W
—
2
0
Section 12 8-Bit Timers
ICKS1
R/W
REJ09B0301-0400
1
0
ICKS0
R/W
2
0
0
C bus