10-8
M68000 8-/16-/32-BIT MICROPROCESSORS USER'S MANUAL
MOTOROLA
10.7 DC ELECTRICAL CHARACTERISTICS (VCC=5.0 VDC±5%; GND=0 VDC; TA=TL
TO T H) (Applies To All Processors Except The MC68EC000)
Characteristic
Symbol
Min
Max
Unit
Input High Voltage
VIH
2.0
VCC
V
Input Low Voltage
VIL
GND-0.3
0.8
V
Input Leakage Current
BERR , BGACK, BR , DTACK, CLK, IPL0—IPL2, VPA
@ 5.25 V
MODE, HALT, RESET
IIN
—
2.5
20
A
Three-State (Off State) Input Current
AS , A0—A23, D0—D15,
@ 2.4 V/0.4 V
FC0–FC2, LDS , R/ W, UDS, VMA
ITSI
—20
A
Output High Voltage
E, AS , A0–A23, BG, D0–D15,
FC0–FC2, LDS , R/ W, UDS, VMA
VOH
VCC –0.75
—
V
Output Low Voltage
(IOL = 1.6 mA)
HALT
(IOL = 3.2 mA)
A0—A23, BG, FC0-FC2
(IOL = 5.0 mA)
RESET
(IOL = 5.3 mA)
E, AS , D0—D15, LDS, R/ W, UDS, VMA
VOL
—
0.5
V
Current Dissipation*
f = 8 MHz
f = 10 MHz
f = 12.5 MHz
f = 16.67 MHz
f = 20 MHz
ID
—
25
30
35
50
70
mA
Power Dissipation
f = 8 MHz
f = 10 MHz
f = 12.5 MHz
f = 16.67 MHz
f = 20 MHz
PD
—
0.13
0.16
0.19
0.26
0.38
W
Capacitance (V in = 0 V, TA=25°C, Frequency=1 MHz)**
Cin
—
20.0
pF
Load Capacitance
HALT
All Others
CL
—
70
130
pF
* Current listed are with no loading.
** Capacitance is periodically sampled rather than 100% tested.
10.8 AC ELECTRICAL SPECIFICATIONS — CLOCK TIMING (See Figure 10-3)
(Applies To All Processors Except The MC68EC000 )
Num
Characteristic
8 MHz*
10 MHz*
12.5 MHz*
16.67 MHz
12F
16 MHz
20 MHZ **
Unit
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Frequency of Operation
4.0
8.0
4.0
10.0
4.0
12.5
8.0
16.7
8.0
16.7
8.0
20.0
MHz
1
Cycle Time
125
250
100
250
80
250
60
125
60
125
50
125
ns
2,3
Clock Pulse Width
(Measured from 1.5 V to 1.5
V for 12F)
55
125
45
125
35
125
27
62.5
27
62.5
21
62.5
ns
4,5
Clock Rise and Fall Times
—
10
—
10
—
5
—
5
—
5
—
4
ns
*These specifications represent an improvement over previously published specifications for the 8-, 10-, and 12.5 -
MHz MC68000 and are valid only for product bearing date codes of 8827 and later.
**This frequency applies only to MC68HC000 and MC68EC000 parts.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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