h8s-2169 Renesas Electronics Corporation., h8s-2169 Datasheet - Page 730

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

Section 22 ROM
22.5.4
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, and also selects the TCNT
input clock. For details on functions not related to on-chip flash memory, see section 3.2.4, Serial
Timer Control Register (STCR), and descriptions of individual 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.
Bits 7 to 4—I
bus interface. For details, see section 16, I
Bit 3—Flash Memory Control Register Enable (FLSHE): Setting the FLSHE bit to 1 enables
read/write access to the flash memory control registers. If FLSHE is cleared to 0, the flash
memory control registers are deselected. In this case, the flash memory control register contents
are retained.
Bit 3
FLSHE
0
1
Bit 2—Reserved: Do not write 1 to this bit.
Bits 1 and 0—Internal Clock Select 1 and 0 (ICKS1, ICKS0): These bits control 8-bit timer
operation. See section 12, 8-Bit Timers, for details.
Rev. 3.00 Jan 18, 2006 page 702 of 1044
REJ09B0280-0300
Bit
Initial value
Read/Write
Serial/Timer Control Register (STCR)
Description
Flash memory control registers deselected
Flash memory control registers selected
2
C Control (IICS, IICX1, IICX0, IICE): These bits control the operation of the I
IICS
R/W
7
0
IICX1
R/W
6
0
IICX0
R/W
5
0
2
C Bus Interface.
IICE
R/W
4
0
FLSHE
R/W
3
0
R/W
—
2
0
ICKS1
R/W
1
0
(Initial value)
ICKS0
R/W
0
0
2
C