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M16C/62P Group (M16C/62P, M16C/62PT)
Switching Characteristics
(V
= V
= 5V, V
CC1
CC2
SS
Table 23.27
Memory Expansion and Microprocessor Modes (for setting with no wait)
Symbol
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)
th(WR-DB)
Data Output Hold Time (in relation to WR)
t
HLDA Output Delay Time
d(BCLK-HLDA)
NOTES:
1. Calculated according to the BCLK frequency as follows:
9
0.5x10
----------------------- - 40 ns
–
(
)
f BCLK
2. Calculated according to the BCLK frequency as follows:
9
0.5x10
----------------------- - 10 ns
–
(
)
f BCLK
3. This standard value shows the timing when the output is off, and
does not show hold time of data bus.
Hold time of data bus varies with capacitor volume and pull-up
(pull-down) resistance value.
Hold time of data bus is expressed in
t = −CR X ln (1−V
by a circuit of the right figure.
For example, when V
of output "L" level is
t = −30pF X 1k Ω X In(1−0.2V
= 6.7ns.
Figure 23.2
Ports P0 to P14 Measurement Circuit
Rev.2.41
Jan 10, 2006
REJ09B0185-0241
http://www.xinpian.net
= −20 to 85°C / −40 to 85°C unless otherwise specified)
= 0V, at T
opr
Parameter
[
]
f(BCLK) is 12.5MHz or less.
[
]
/ V
)
OL
CC2
= 0.2V
, C = 30pF, R = 1kΩ, hold time
OL
CC2
/ V
)
CC2
CC2
Page 317 of 390
提供单片机解密、IC解密、芯片解密业务
See
Figure 23.2
(3)
(3)
P0
P1
P2
30pF
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P13
P14
23. Electrical Characteristics
V
=V
=5V
CC1
CC2
Standard
Unit
Min.
Max.
25
ns
4
ns
0
ns
(NOTE 2)
ns
25
ns
4
ns
15
ns
−4
ns
25
ns
0
ns
25
ns
0
ns
40
ns
4
ns
(NOTE 1)
ns
(NOTE 2)
ns
40
ns
R
DBi
C
010-62245566 13810019655
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