H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 162
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H8S-2350
Manufacturer Part Number
H8S-2350
Description
16-Bit Single-Chip Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.H8S-2350.pdf
(1025 pages)
- Current page: 162 of 1025
- Download datasheet (6Mb)
Section 6 Bus Controller
6.2.3
WCRH and WCRL are 8-bit readable/writable registers that select the number of program wait
states for each area.
In normal mode, only part of area is 0 is enabled, and bits W01 and W00 select the number of
program wait states for the external space. The settings of bits W71, W70 to W11, and W10 have
no effect on operation.
Program waits are not inserted in the case of on-chip memory or internal I/O registers.
WCRH and WCRL are initialized to H'FF by a power-on reset and in hardware standby mode.
They are not initialized by a manual reset or in software standby mode.
(1) WCRH
Bits 7 and 6—Area 7 Wait Control 1 and 0 (W71, W70): These bits select the number of
program wait states when area 7 in external space is accessed while the AST7 bit in ASTCR is set
to 1.
Rev. 3.00 Sep 15, 2006 page 128 of 988
REJ09B0330-0300
Bit 7
W71
0
1
Bit
Initial value
R/W
Wait Control Registers H and L (WCRH, WCRL)
Bit 6
W70
0
1
0
1
:
:
:
W71
R/W
7
1
Description
Program wait not inserted when external space area 7 is accessed
1 program wait state inserted when external space area 7 is accessed
2 program wait states inserted when external space area 7 is accessed
3 program wait states inserted when external space area 7 is accessed
W70
R/W
6
1
W61
R/W
5
1
W60
R/W
4
1
W51
R/W
3
1
W50
R/W
2
1
W41
R/W
1
1
(Initial value)
W40
R/W
0
1
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