h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 163

• Manufacturer Part Number: h8s-2649
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

7.5.4
When accessing external space, this LSI can extend the bus cycle by inserting one or more wait
states (T
insertion using the WAIT pin.
Program Wait Insertion: From 0 to 3 wait states can be inserted automatically between the T
state and T
WCRH and WCRL.
Read
Write
w
). There are two ways of inserting wait states: program wait insertion and pin wait
Wait Control
3
state on an individual area basis in 3-state access space, according to the settings in
φ
Address bus
AS
RD
D15 to D8
D7 to D0
HWR
LWR
D15 to D8
D7 to D0
Figure 7.12 Bus Timing for 16-Bit, 3-State Access Space
T
(Word Access)
1
Bus cycle
T
2
Rev. 2.00 Dec. 05, 2005 Page 125 of 724
Valid
Valid
Section 7 Bus Controller (BSC)
T
3
Valid
Valid
REJ09B0200-0200
2