HD6412332 RENESAS [Renesas Technology Corp], HD6412332 Datasheet - Page 173

• Manufacturer Part Number: HD6412332
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Bit 5
EAE
0
1
Notes: 1. Do not access a reserved area.
Bit 4—Reserved: Only 1 should be written to this bit.
Bit 3—DACK Timing Select (DDS): Selects the DMAC single address transfer bus timing for
the DRAM interface.
Bit 3
DDS
0
1
Bit 2—Reserved: Only 1 should be written to this bit.
Bit 1—Write Data Buffer Enable (WDBE): Selects whether or not the write buffer function is
used for an external write cycle or DMAC single address cycle.
Bit 1
WDBE
0
1
Bit 0—WAIT Pin Enable (WAITE): Selects enabling or disabling of wait input by the WAIT
pin.
Bit 0
WAITE
0
1
2. Addresses H'010000 to H'05FFFF in the H8S/2339.
On-chip ROM
Addresses H'010000 to H'03FFFF are external addresses in external expanded mode
or reserved area *
H8S/2339, H8S/2338
Description
When DMAC single address transfer is performed in DRAM space, full access is
always executed. DACK signal goes low from Tr or T1 cycle
Burst access is possible when DMAC single address transfer is performed in DRAM
space. DACK signal goes low from Tc1 or T2 cycle
Description
Write data buffer function not used
Write data buffer function used
Description
Wait input by WAIT pin disabled. WAIT pin can be used as I/O port
Wait input by WAIT pin enabled
1
in single-chip mode
on-chip ROM or addresses H'020000
to H'03FFFF are reserved area *
H8S/2337
Addresses H'010000 to H'01FFFF are
Description
Rev.4.00 Sep. 07, 2007 Page 143 of 1210
1
Reserved area *
H8S/2332
REJ09B0245-0400
(Initial value)
(Initial value)
(Initial value)
1