Table of Contents
Advertisement
M16C/62P Group (M16C/62P, M16C/62PT)
Switching Characteristics
(V
= V
= 5V, V
CC1
CC2
Table 23.27 Memory Expansion and Microprocessor Modes
(for 1- to 3-wait setting and external area access)
S y m b o l
t
Address Output Delay Time
d ( B C L K - A D )
t
Address Output Hold Time (in relation to BCLK)
h ( B C L K - A D )
t
Address Output Hold Time (in relation to RD)
h ( R D - A D )
t
Address Output Hold Time (in relation to WR)
h ( W R - A D )
t
Chip Select Output Delay Time
d ( B C L K - C S )
t
Chip Select Output Hold Time (in relation to BCLK)
h ( B C L K - C S )
t
ALE Signal Output Delay Time
d ( B C L K - A L E )
t
ALE Signal Output Hold Time
h ( B C L K - A L E )
t
RD Signal Output Delay Time
d ( B C L K - R D )
t
RD Signal Output Hold Time
h(BCLK-RD)
t
WR Signal Output Delay Time
d ( B C L K - W R )
t
WR Signal Output Hold Time
h ( B C L K - W R )
t
Data Output Delay Time (in relation to BCLK)
d ( B C L K - D B )
t
Data Output Hold Time (in relation to BCLK)
h ( B C L K - D B )
t
Data Output Delay Time (in relation to WR)
d(DB-WR)
t
Data Output Hold Time (in relation to WR)
h(WR-DB)
t
HLDA Output Delay Time
d(BCLK-HLDA)
N O T E S :
1 . C a l c u l a t e d a c c o r d i n g t o t h e B C L K f r e q u e n c y a s f o l l o w s :
(n–0.5) X 10
f ( B C L K )
2 . C a l c u l a t e d a c c o r d i n g t o t h e B C L K f r e q u e n c y a s f o l l o w s :
0.5 X 10
f ( B C L K )
3 . T h i s s t a n d a r d v a l u e s h o w s t h e t i m i n g w h e n t h e o u t p u t i s o f f ,
a n d d o e s n o t s h o w h o l d t i m e o f d a t a b u s .
H o l d t i m e o f d a t a b u s v a r i e s w i t h c a p a c i t o r v o l u m e a n d p u l l - u p
( p u l l - d o w n ) r e s i s t a n c e v a l u e .
H o l d t i m e o f d a t a b u s i s e x p r e s s e d i n
t = – C R X l n ( 1 – V
b y a c i r c u i t o f t h e r i g h t f i g u r e .
F o r e x a m p l e , w h e n V
o f o u t p u t " L " l e v e l i s
t = – 3 0 p F X 1 k Ω X l n ( 1 – 0 . 2 V
= 6 . 7 n s .
R
e
. v
2
3 .
0
S
e
p
0
, 1
2
0
0
4
R
E
J
0
9
B
0
1
8
5
0 -
2
3
0
Z
= 0V, at Topr = – 20 to 85
SS
Parameter
9
– 40
[ns]
9
– 1 0
[ns]
/ V
)
O L
C C 2
, C = 3 0 p F , R = 1 k Ω , h o l d t i m e
= 0 . 2 V
O L
C C 2
page 285
f o
3
6
4
23. Electrical Characteristics (M16C/62P)
o
C / – 40 to 85
Measuring
Condition
See Figure
(3)
(3)
n i s " 1 " f o r 1 - w a i t s e t t i n g , " 2 " f o r 2 - w a i t
s e t t i n g a n d " 3 " f o r 3 - w a i t s e t t i n g .
W h e n n = 1 , f ( B C L K ) i s 1 2 . 5 M H z o r l e s s .
/ V
)
C C 2
C C 2
V
= V
CC1
o
C unless otherwise specified)
S t a n d a r d
M i n .
4
0
(NOTE 2)
4
– 4
23.2
0
0
4
(NOTE 1)
(NOTE 2)
= 5V
CC2
U n i t
M a x .
2 5
ns
ns
ns
ns
2 5
ns
ns
15
ns
ns
2 5
ns
ns
2 5
ns
ns
4 0
ns
ns
ns
ns
4 0
ns
R
DBi
C
Advertisement
Table of Contents
