MC68HC68 MOTOROLA [Motorola, Inc], MC68HC68 Datasheet - Page 4

• Manufacturer Part Number: MC68HC68
• Description: Real-Time Clock plus RAM with Serial Interface
• Manufacturer: MOTOROLA [Motorola, Inc]

MC68HC68T1
4
AC ELECTRICAL CHARACTERISTICS
TIMING REQUIREMENTS
Symbol
Symbol
t w(H) ,
t PLH ,
t TLH ,
f SCK
t PLZ ,
t PHZ
t PZL ,
t PZH
t PHL
t THL
t w(L
t rec
t r , t f
C in
t su
t su
t w
t h
t h
)
Maximum Clock Frequency (Refer to SCK t w , below)
Maximum Propagation Delay, SCK to MISO
Maximum Propagation Delay, SS to MISO
Maximum Propagation Delay, SCK to MISO
Maximum Output Transition Time, Any Output (Measured Between 70% V DD
and 20% V DD )
Maximum Input Capacitance
Minimum Setup Time, SS to SCK
Minimum Setup Time, MOSI to SCK
Minimum Hold Time, SCK to SS
Minimum Hold Time, SCK to MOSI
Minimum Recovery Time, SCK
Minimum Pulse Width, SCK
Minimum Pulse Width, POR
Maximum Input Rise and Fall Times (Except XTAL in and POR) (Measured
Between 70% V DD and 20% V DD )
(T A = – 40 to + 85 _ C, Input t r = t f = 6 ns, Voltages Referenced to V SS )
(T A = – 40 to + 85 _ C, C L = 200 pF, Input t r = t f = 6 ns, Voltages Referenced to V SS )
Parameter
Parameter
Figure
Figure
1, 2, 3
2, 3
2, 4
2, 4
2, 3
1, 2
1, 2
1, 2
1, 2
1, 2
1, 2
1, 2
No.
No.
V DD
V DD
3.0
4.5
6.0
3.0
4.5
6.0
3.0
4.5
6.0
3.0
4.5
6.0
3.0
4.5
6.0
3.0
4.5
6.0
3.0
4.5
6.0
3.0
4.5
6.0
3.0
4.5
6.0
3.0
4.5
6.0
3.0
4.5
6.0
3.0
4.5
6.0
3.0
4.5
6.0
—
V
V
Guaranteed
Guaranteed
Limit
Limit
200
100
100
200
100
100
200
100
100
200
100
100
200
100
100
200
100
100
250
125
125
200
100
100
200
200
200
400
200
200
100
100
2.1
2.1
10
—
—
—
2
2
MOTOROLA
MHz
Unit
Unit
pF
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
m
s