Motorola M68000 - AC Electrical Specifications-Clock Timing; DC Electrical Characteristics

10-8 M68000 8-/16-/32-BIT MICROPROCESSORS USER'S MANUAL MOTOROLA
10.7 DC ELECTRICAL CHARACTERISTICS (V
CC
=5.0 VDC±5%; GND=0 VDC; T
A
=T
L
TO T
H
) (Applies To All Processors Except The MC68EC000)
Characteristic Symbol Min Max Unit
Input High Voltage V
IH
2.0 V
CC
V
Input Low Voltage V
IL
GND-0.3 0.8 V
Input Leakage Current BERR , BGACK, BR, DTACK, CLK, IPL0—IPL2, VPA
@ 5.25 V MODE, HALT, RESET
I
IN
—
—
2.5
20
µA
Three-State (Off State) Input Current AS , A0—A23, D0—D15,
@ 2.4 V/0.4 V FC0–FC2, LDS, R/ W, UDS, VMA
I
TSI
—20µA
Output High Voltage E, AS , A0–A23, BG, D0–D15,
FC0–FC2, LDS, R/W, UDS, VMA
V
OH
V
CC
–0.75 — V
Output Low Voltage
(I
OL
= 1.6 mA) HALT
(I
OL
= 3.2 mA) A0—A23, BG, FC0-FC2
(I
OL
= 5.0 mA) RESET
(I
OL
= 5.3 mA) E, AS , D0—D15, LDS, R/W, UDS, VMA
V
OL
—
—
—
—
0.5
0.5
0.5
0.5
V
Current Dissipation* f = 8 MHz
f = 10 MHz
f = 12.5 MHz
f = 16.67 MHz
f = 20 MHz
I
D
—
—
—
—
—
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
P
D
— 0.13
0.16
0.19
0.26
0.38
W
Capacitance (V
in
= 0 V, T
A
=25°C, Frequency=1 MHz)** C
in
— 20.0 pF
Load Capacitance HALT
All Others
C
L
—
—
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
55
125
125
45
45
125
125
35
35
125
125
27
27
62.5
62.5
27
27
62.5
62.5
21
21
62.5
62.5
ns
4,5 Clock Rise and Fall Times —
—
10
10
—
—
10
10
—
—
5
5
—
—
5
5
—
—
5
5
—
—
4
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.
Frees
cale Semiconductor,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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