m5m51016btp Renesas Electronics Corporation., m5m51016btp Datasheet - Page 354

• Manufacturer Part Number: m5m51016btp
• Description: Renesas 16-bit Single-chip Microcomputer M16c Family / M16c/20 Series
• Manufacturer: Renesas Electronics Corporation.

M30245 Group
Rev.2.00 Oct 16, 2006
REJ09B0340-0200
Figure 4.4.4. Example of RDY circuit holding state of bus for 1 BCLK (f(X
(2) RDY function usage
BCLK
1Q
2 Q
R D Y
C S 0
RD
To use the RDY function, set a software wait.
The RDY function operates when the BCLK signal falls with the RDY pin at “L”; the bus does not vary
for 1 BCLK, and the state at that moment is held.
The RDY function holds the state of bus for the period in which the RDY pin is at “L”, and releases it
when the BCLK signal falls with the RDY pin at “H”. Figure 4.4.4 shows an example of RDY circuit
(f(X
________
B C L K
( 1 ) R D Y a c c e p t e d
( 2 ) R D Y c l e a r e d
IN
_______
CS0
R D
_______
)=10MHz) that holds the state of bus for 1 BCLK.
T h e s t a t e o f d a t a b u s a n d t h a t o f a d d r e s s b u s a r e h e l d f o r t h e p e r i o d b e t w e e n ( 1 ) a n d ( 2 ) .
_______
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________
C K
D
(1)
S
R
1Q
1Q
_______
(2)
(1)
CK
D
S
R
_______
( 2 )
2Q
2Q
_______
IN
)=10MHz)
4. External Buses
_______
RDY