HD64F3437TF16 Datasheet, PDF (684/752 Pages) Hitachi Semiconductor – 12 V must not be applied to the S-mask model (single-power-supply specification), as this may permanently damage the device.

WSCR—Wait-State Control Register
H'C2
System control
Bit
Initial value
Read/Write
7
RAMS
0
R/W
6
RAM0
0
R/W
5
CKDBL
0
R/W
4
FLSHE
0
R/W
3
WMS1
1
R/W
2
WMS0
0
R/W
1
WC1
0
R/W
0
WC0
0
R/W
Wait Count
0 0 No wait states inserted by wait-state
controller (initial value)
0 1 1 state inserted
1 0 2 states inserted
1 1 3 states inserted
Wait Mode Select
0 0 Programmable wait mode
0 1 No wait states inserted by wait-state controller
1 0 Pin wait mode
(initial value)
1 1 Pin auto-wait mode
Flash Memory Control Register Enable
H8/3437SF (Single-power-supply flash memory only)
0 Flash memory control registers are in unselected state (Initial value)
1 Flash memory control registers are in selected state
Clock Double
0 Supporting module clock frequency is not divided (ø_P = ø) (initial value)
1 Supporting module clock frequency is divided by two (ø_P = ø/2)
RAM Select and RAM Area Select
H8/3434F (Dual-power-supply flash memory only)
RAMS, RAM0
RAM Area
ROM Area
00
None
—
01
H'FC80 to H'FCFF
H'0080 to H'00FF
10
H'FC80 to H'FD7F
H'0080 to H'017F
11
H'FC00 to H'FC7F
H'0000 to H'007F
H8/3437F
RAMS, RAM0
00
01
10
11
RAM Area
None
H'F880 to H'F8FF
H'F880 to H'F97F
H'F800 to H'F87F
ROM Area
—
H'0080 to H'00FF
H'0080 to H'017F
H'0000 to H'007F
655