HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 827

• Manufacturer Part Number: HD6433044
• Description: (HD64 Series) Hitachi Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

Bit
Initial value
Read/Write
SYSCR—System Control Register
SSBY
Software standby
R/W
0 SLEEP instruction causes transition to sleep mode
1 SLEEP instruction causes transition to software standby mode
7
0
Standby timer select 2 to 0
STS2
Bit 6
STS2
R/W
0
1
6
0
STS1
Bit 5
0
1
0
1
STS1
User bit enable
R/W
0 CCR bit 6 (UI) is used as an interrupt mask bit
1 CCR bit 6 (UI) is used as a user bit
5
0
NMI edge select
STS0
0 An interrupt is requested at the falling edge of NMI
1 An interrupt is requested at the rising edge of NMI
Bit 4
—
0
1
0
1
0
1
STS0
820
R/W
Standby Timer
Waiting time = 8,192 states
Waiting time = 16,384 states
Waiting time = 32,768 states
Waiting time = 65,536 states
Waiting time = 131,072 states
Waiting time = 1,024 states
Illegal setting
4
0
R/W
UE
3
1
RAM enable
NMIEG
0 On-chip RAM is disabled
1 On-chip RAM is enabled
R/W
H'F2
2
0
—
—
1
1
System control
RAME
R/W
0
1