HD6432621 Hitachi, HD6432621 Datasheet - Page 924

• Manufacturer Part Number: HD6432621
• Description: (HD64F262x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

SYSCR—System Control Register
880
Bit
Initial value
Read/Write
:
:
:
MACS
R/W
Mac saturation
0 Non-saturating calculation for MAC instruction
1
7
0
Saturating calculation for MAC instruction
—
—
6
0
INTM1
R/W
5
0
Interrupt control mode select
Note: For details, see section 5.4.1
0
1
INTM0
0
1
0
1
R/W
4
0
Interrupt Control Modes and
Interrupt Operation.
Interrupt control mode 0
Setting prohibited
Interrupt control mode 2
Setting prohibited
H'FDE5
NMIEG
R/W
NMI interrupt input edge select
3
0
0 Falling edge
1
Rising edge
RAM enable
Note: When the DTC is used,
0 On-chip RAM is disabled
1
R/W
—
2
0
On-chip RAM is enabled
the RAME bit must be
set to 1.
—
—
1
0
RAME
R/W
0
1
MCU