HD6433308 HITACHI [Hitachi Semiconductor], HD6433308 Datasheet - Page 330

• Manufacturer Part Number: HD6433308
• Description: Hitachi Single-Chip MicroComputer
• Manufacturer: HITACHI [Hitachi Semiconductor]

P9DR—Port 9 Data Register
Bit
Initial value
Read/Write
SYSCR—System Control Register
Bit
Initial value
Read/Write
Software Standby
0 SLEEP instruction causes transition to sleep mode.
1 SLEEP instruction causes transition to software standby mode.
SSBY
R/W
R/W
P9
7
0
7
0
7
Standby Timer Select
0 0 0 Clock settling time = 8192 states
0 0 1 Clock settling time = 16384 states
0 1 0 Clock settling time = 32768 states
0 1 1 Clock settling time = 65536 states
1 – – Clock settling time = 131072 states
STS2
R/W
R/W
P9
6
0
6
0
6
STS1
R/W
R/W
NMI Edge
0 Falling edge of NMI is detected.
1 Rising edge of NMI is detected.
P9
5
0
5
0
5
STS0
Dual-Port RAM Enable
0 Dual-port RAM is disabled.
1 (1) Single-chip mode: dual-port RAM is enabled.
R/W
R/W
P9
4
0
4
0
(2) Expanded modes: no effect
322
4
H’FFC4
R/W
P9
—
—
3
0
3
1
3
H’FFC1
NMIEG DPME RAME
RAM Enable
0 On-chip RAM is disabled.
1 On-chip RAM is enabled.
R/W
R/W
P9
2
0
2
0
2
System Control
R/W
R/W
P9
1
0
1
0
1
Port 9
R/W
R/W
P9
0
0
0
1
0