Dc Electrical Characteristics; Ac Electrical Specifications-Clock Timing - Motorola M68000 User Manual

8-/16-/32-bit microprocessors
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10.7 DC ELECTRICAL CHARACTERISTICS

TO T
) (Applies To All Processors Except The MC68EC000)
H
Input High Voltage
Input Low Voltage
Input Leakage Current
@ 5.25 V
Three-State (Off State) Input Current
@ 2.4 V/0.4 V
Output High Voltage
Output Low Voltage
(I OL = 1.6 mA)
(I OL = 3.2 mA)
(I OL = 5.0 mA)
(I OL = 5.3 mA)
Current Dissipation*
Power Dissipation
Capacitance (V in = 0 V, T A =25 C, Frequency=1 MHz)**
Load Capacitance
* Current listed are with no loading.
** Capacitance is periodically sampled rather than 100% tested.
10.8 AC ELECTRICAL SPECIFICATIONS — CLOCK TIMING
(Applies To All Processors Except The MC68EC000)
Num
Characteristic
Frequency of Operation
1
Cycle Time
2,3
Clock Pulse Width
(Measured from 1.5 V to 1.5
V for 12F)
4,5
Clock Rise and Fall Times
*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.
10-8
M68000 8-/16-/32-BIT MICROPROCESSORS USER'S MANUAL
Freescale Semiconductor, Inc.
Characteristic
BERR , BGACK, BR , DTACK, CLK, IPL0—IPL2, VPA
AS , A0—A23, D0—D15,
FC0–FC2, LDS , R/ W, UDS, VMA
E, AS , A0–A23, BG, D0–D15,
FC0–FC2, LDS , R/ W, UDS, VMA
A0—A23, BG, FC0-FC2
E, AS , D0—D15, LDS, R/ W, UDS, VMA
8 MHz*
Min
Max
Min
4.0
8.0
4.0
125
250
100
55
125
45
55
125
45
10
10
For More Information On This Product,
Go to: www.freescale.com
(V
=5.0 VDC 5%; GND=0 VDC; T
CC
Symbol
MODE, HALT, RESET
HALT
RESET
f = 8 MHz
f = 10 MHz
f = 12.5 MHz
f = 16.67 MHz
f = 20 MHz
f = 8 MHz
f = 10 MHz
f = 12.5 MHz
f = 16.67 MHz
f = 20 MHz
HALT
All Others
16.67 MHz
10 MHz*
12.5 MHz*
Max
Min
Max
Min
10.0
4.0
12.5
8.0
250
80
250
60
125
35
125
27
125
35
125
27
10
5
10
5
A
Min
Max
V IH
2.0
V CC
V IL
GND-0.3
0.8
I IN
2.5
20
I TSI
20
V OH
V CC –0.75
V OL
0.5
0.5
0.5
0.5
I D
25
30
35
50
70
P D
0.13
0.16
0.19
0.26
0.38
C in
20.0
C L
70
130
(
See Figure 10-3)
16 MHz
20 MHZ
12F
Max
Min
Max
Min
16.7
8.0
16.7
8.0
125
60
125
50
62.5
27
62.5
21
62.5
27
62.5
21
5
5
5
5
MOTOROLA
=T
L
Unit
V
V
A
A
V
V
mA
W
pF
pF
**
Unit
Max
20.0
MHz
125
ns
62.5
ns
62.5
4
ns
4

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Mc68hc000Mc68hc001Mc68008Mc68010Mc68ec000

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