778
21.1.2
Register Configuration
The on-chip RAM is controlled by SYSCR. Table 21-1 shows the address and initial value of
SYSCR.
Table 21-1 RAM Register
Name
Abbreviation
R/W
Initial Value
Address
*
System control register
SYSCR
R/W
H'01
H'FDE5
Note:
*
Lower 16 bits of the address.
21.2
Register Descriptions
21.2.1
System Control Register (SYSCR)
7
MACS
0
R/W
6
—
0
—
5
INTM1
0
R/W
4
INTM0
0
R/W
3
NMIEG
0
R/W
0
RAME
1
R/W
2
MRESE
0
R/W
1
—
0
—
Bit
Initial value
R/W
:
:
:
The on-chip RAM is enabled or disabled by the RAME bit in SYSCR. For details of other bits in
SYSCR, see section 3.2.2, System Control Register (SYSCR).
Bit 0—RAM Enable (RAME): Enables or disables the on-chip RAM. The RAME bit is
initialized when the reset state is released. It is not initialized in software standby mode.
Note:
When the DTC is used, the RAME bit must not be cleared to 0.
Bit 0
RAME
Description
0
On-chip RAM is disabled
1
On-chip RAM is enabled
(Initial value)
Содержание H8S/2631
Страница 28: ...xviii Appendix G Package Dimensions 1154 ...
Страница 341: ...316 Transfer SAR or DAR DAR or SAR Block area First block Nth block Figure 9 8 Memory Mapping in Block Transfer Mode ...
Страница 918: ...905 ø DREQ0 DREQ1 tDRQS tDRQH Figure 25 19 DMAC DREQ Input Timing ...
Страница 955: ...943 A 2 Instruction Codes Table A 2 shows the instruction codes ...