h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 628

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

Section 20 RAM
20.1.2
The on-chip RAM is controlled by SYSCR. Table 20.1 shows the register configuration.
Table 20.1 Register Configuration
Name
System control register
Note:
20.2
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.
Bit 0
RAME
0
1
Rev. 4.00 Jun 06, 2006 page 574 of 1004
REJ09B0301-0400
Bit
Initial value
Read/Write
* Lower 16 bits of the address.
Register Configuration
System Control Register (SYSCR)
Description
On-chip RAM is disabled
On-chip RAM is enabled
CS2E
R/W
7
0
IOSE
R/W
6
0
Abbreviation
SYSCR
INTM1
R
5
0
INTM0
R/W
4
0
R/W
R/W
XRST
R
3
1
H'09
Initial Value
NMIEG
R/W
2
0
R/W
HIE
1
0
Address *
H'FFC4
(Initial value)
RAME
R/W
0
1