MC81F4x16
7.7 Serial I/O Characteristics
(T = - 40 C to + 85 C, V
A
= 2.2 V to 5.5 V)
DD
Parameter
Symbol
Conditions
Min
1,000
1,000
500
Typ Max Units
External SCK source
Internal SCK source
External SCK source
Internal SCK source
External SCK source
Internal SCK source
External SCK source
Internal SCK source
External SCK source
Internal SCK source
t
SCK cycle time
nS
KCY
t
, t
SCK high, low width
nS
KH KL
t
/2–50
KCY
–
–
250
250
400
400
SI setup time
to SCK high
t
nS
nS
nS
SIK
SI hold time to SCK
High
t
KSI
300
250
Output delay for
SCK to SOUT
t
–
–
KSO
t
,
INTH
All interrupt, V = 5 V
Interrupt input, high, low width
RESETB input low width
200
10
–
–
–
–
nS
uS
DD
t
INTL
t
Input, V = 5 V
RSL
DD
tINTH
tINTH
0.8 VDD
0.2 VDD
External
Interrupt
Figure 7-1 Input Timing for External Interrupts
tRSL
RESETB
0.2 VDD
Figure 7-2 Input Timing for RESETB
October 19, 2009 Ver.1.35
37
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