HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 186

• Manufacturer Part Number: HD6412240
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 6 Bus Controller
Bit 5—External Address Enable (EAE): Selects whether addresses H'010000 to H'01FFFF are
to be internal addresses or external addresses.
This setting is invalid in normal mode.
Bit 5
EAE
0
1
Note:
Bits 4 and 3—Reserved: Only 1 should be written to these bits.
Bit 2—Area Partition Unit Select (ASS): Selects the area partition unit.
Bit 2
ASS
0
1
Bit 1—Reserved: Only 0 should be written to this bit.
Bit 0—WAIT Pin Enable (WAITE): Selects enabling or disabling of wait input by the WAIT
pin.
Bit 0
WAITE
0
1
Rev.3.00 Mar. 26, 2007 Page 144 of 772
REJ09B0355-0300
* Reserved areas should not be accessed.
Description
Addresses H'010000 to H'01FFFF are in on-chip ROM (H8S/2246 and H8S/2245) or
a reserved area* (H8S/2244, H8S/2243, H8S/2242, and H8S/2241).
Addresses H'010000 to H'01FFFF are external addresses (external expansion mode)
or a reserved area* (single-chip mode).
Description
Area partition unit is 128 kbytes (1 Mbit)
Area partition unit is 2 Mbytes (16 Mbits)
Description
Wait input by WAIT pin disabled. WAIT pin can be used as I/O port.
Wait input by WAIT pin enabled
(Initial value)
(Initial value)
(Initial value)