Table of Contents
Advertisement
M16C/64A Group
31.2.4
Switching Characteristics (Memory Expansion Mode and Microprocessor
Mode)
(V
= V
= 5 V, V
CC1
CC2
31.2.4.1
In No Wait State Setting
Table 31.35
Memory Expansion Mode and Microprocessor Mode (in No Wait State Setting)
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)
t
Data output hold time (in relation to WR)
h(WR-DB)
Notes:
1.
Calculated according to the BCLK frequency as follows:
9
×
0.5 10
[
--------------------- - 40 ns
–
f
(
)
BCLK
2.
Calculated according to the BCLK frequency as follows:
9
×
0.5 10
[
--------------------- - 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 × ln(1 − V
by a circuit of the right figure.
For example, when V
low level is
t = − 30 pF × 1 k Ω × In(1 − 0.2V
= 6.7 ns.
R01UH0136EJ0210 Rev.2.10
Jul 31, 2012
= -20 ° C to 85 ° C/-40 ° C to 85 ° C unless otherwise specified)
= 0 V, at T
SS
opr
Parameter
]
f
is 12.5 MHz or less.
(BCLK)
]
/V
)
OL
CC2
, C = 30 pF, R = 1 k Ω , hold time of output
= 0.2V
OL
CC2
/V
)
CC2
CC2
Measuring
Condition
Figure 31.14
(3)
(3)
31. Electrical Characteristics
V
= V
CC1
Standard
Min.
Max.
25
0
0
(Note 2)
25
0
15
− 4
See
25
0
25
0
40
0
(Note 1)
(Note 2)
DBi
Page 723 of 800
= 5 V
CC2
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
R
C
Advertisement
Table of Contents
