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M16C/62P Group (M16C/62P, M16C/62PT)
Switching Characteristics
(V
= V
= 3V, V
CC1
CC2
Table 23.45 Memory Expansion, Microprocessor Modes (for setting with no wait)
S y m b o l
t
Address Output Delay Time
d(BCLK-AD)
t
Address Output Hold Time (in relation to BCLK)
h(BCLK-AD)
t
Address Output Hold Time (in relation to RD)
h(RD-AD)
t
Address Output Hold Time (in relation to WR)
h(WR-AD)
t
Chip Select Output Delay Time
d(BCLK-CS)
t
Chip Select Output Hold Time (in relation to BCLK)
h(BCLK-CS)
t
ALE Signal Output Delay Time
d(BCLK-ALE)
t
ALE Signal Output Hold Time
h(BCLK-ALE)
t
RD Signal Output Delay Time
d(BCLK-RD)
t
RD Signal Output Hold Time
h(BCLK-RD)
t
WR Signal Output Delay Time
d(BCLK-WR)
t
WR Signal Output Hold Time
h(BCLK-WR)
t
Data Output Delay Time (in relation to BCLK)
d(BCLK-DB)
t
Data Output Hold Time (in relation to BCLK)
h(BCLK-DB)
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)
NOTES:
1. Calculated according to the BCLK frequency as follows:
0.5 X 10
f ( B C L K )
2. Calculated according to the BCLK frequency as follows:
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 .
Figure 23.12 Ports P0 to P14 Measurement Circuit
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
P a r a m e t e r
9
– 4 0
[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
C C 2
P0
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P13
P14
page 301
f o
3
6
4
23. Electrical Characteristics (M16C/62P)
o
o
C / – 40 to 85
Measuring
Condition
See Figure
23.12
(3)
(3)
f(BCLK) is 12.5MHz or less.
/ V
)
C C 2
30pF
V
= V
CC1
CC2
C unless otherwise specified)
Standard
M i n .
M a x .
3 0
4
0
( N O T E 2 )
3 0
4
2 5
– 4
3 0
0
3 0
0
4 0
4
( N O T E 1 )
(NOTE 2)
4 0
D B i
= 3V
U n i t
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
R
C
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