HD64F3670 RENESAS [Renesas Technology Corp], HD64F3670 Datasheet - Page 92

• Manufacturer Part Number: HD64F3670
• Description: Hitachi Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

6.1.2
SYSCR2 controls the power-down modes, as well as SYSCR1.
Bit Bit Name
7
6
5
4
3
2
1
0
Legend X: Don't care.
Rev. 2.0, 03/02, page 68 of 298
SMSEL
DTON
MA2
MA1
MA0
System Control Register 2 (SYSCR2)
Initial Value
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
Description
Sleep Mode Selection
This bit selects the mode to transit after the execution of a
SLEEP instruction, as well as bit SSBY of SYSCR1.
For details, see table 6.2.
Reserved
This bit is always read as 0.
Direct Transfer on Flag
This bit selects the mode to transit after the execution of a
SLEEP instruction, as well as bit SSBY of SYSCR1.
For details, see table 6.2.
Active Mode Clock Select 2 to 0
These bits select the operating clock frequency in active
and sleep modes. The operating clock frequency changes
to the set frequency after the SLEEP instruction is
executed.
0XX:
100:
101:
110:
111:
Reserved
These bits are always read as 0.
OSC
OSC
OSC
OSC
OSC
/8
/16
/32
/64