MC68000 MOTOROLA [Motorola, Inc], MC68000 Datasheet - Page 293

• Manufacturer Part Number: MC68000
• Manufacturer: MOTOROLA [Motorola, Inc]

6.6 DC ELECTRICAL CHARACTERISTICS—NMSI1 IN IDL MODE
6.7 AC ELECTRICAL SPECIFICATIONS—CLOCK TIMING
MOTOROLA
NOTE:
1. CLKO loading is 50 pF max.
2. CLKO skew from the rising and falling edges of EXTAL will not differ from each other by more than 1 ns, if the
3. You may not stop the clock input at any time.
Input Low Level Voltage
Input High Level Voltage
Input Low Level Current
Input High Level Current
Output Low Level Voltage
Output High Level Voltage
Num.
2, 3
4, 5
EXTAL rise time equals the EXTAL fall time.
5a
1
(see Figure 6-1, Figure 6-2, Figure 6-3, and Figure 6-4)
Characteristic
Frequency of Operation
Clock Period (EXTAL) (See note 3)
Clock Pulse Width (EXTAL)
Clock Rise and Fall Times (EXTAL)
EXTAL to CLKO Delay (See Notes 1 and 2)
EXTAL
CLKO
V
CIL
Characteristic
V
CIH
= 0.6V
Input Pin Characteristics: L1CLK, L1SY1, L1RXD, L1GR
Output Pin Characteristics: L1TXD, SDS1- SDS2, L1RQ
= 4V
Figure 6-1. Clock Timing Diagram
Symbol
V
V
V
V
II
II
OH
OL
IH
IL
H
L
MC68302 USER’S MANUAL
5
V
V
DD
DD
-10%
Min
—
—
0
- 20%
- 1.0
Symbol
2
t
CL
t
Cr
t
t
5a
cyc
CD
, t
, t
f
CH
Cf
1
V
Min
16.67 MHz
60
25
—
DD
8
2
+ 20%
Max
V
1.0
+ 10%
DD
10
10
4
16.67
3
Max
62.5
125
11
5a
5
Min
50
21
—
8
2
20 MHz
Unit
Electrical Characteristics
V
V
V
V
A
A
Max
62.5
125
20
4
9
Min
40
16
—
8
2
25 MHz
I
I
OH
OL
Condition
(% of V
V
V
in
in
= 5.0 mA
= 400 A
Max
62.5
125
= V
25
= V
4
7
DD
DD
ss
)
MHz
Unit
ns
ns
ns
ns
6-5