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M16C/62P Group (M16C/62P, M16C/62PT)
Switching Characteristics
(V
= V
= 5V, V
CC1
CC2
SS
Table 23.28
Memory Expansion and Microprocessor Modes (for 1- to 3-wait setting and external
area access)
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
(
)x10
n 0.5
–
----------------------------------- - 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 1kΩ X In(1−0.2V
= 6.7ns.
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
n is "1" for 1-wait setting, "2" for 2-wait setting
[
]
–
and "3" for 3-wait setting.
(BCLK) is 12.5MHz or less.
[
]
/ V
)
OL
CC2
= 0.2V
, C = 30pF, R = 1kΩ, hold time
OL
CC2
/ V
)
CC2
CC2
Page 318 of 390
提供单片机解密、IC解密、芯片解密业务
See
Figure 23.2
(3)
(3)
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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