R8C/1A Group, R8C/1B Group
19. Electrical Characteristics
Rev.1.30
Dec 08, 2006
Page 291 of 315
REJ09B0252-0130
i = 0 or 1
Figure 19.11
Serial Interface Timing Diagram when V
CC
= 5 V
NOTES:
1.
When selecting the digital filter by the INT0 input filter select bit, use an INT0 input HIGH width of either (1/digital filter clock
frequency x 3) or the minimum value of standard, whichever is greater.
2.
When selecting the digital filter by the INT0 input filter select bit, use an INT0 input LOW width of either (1/digital filter clock
frequency x 3) or the minimum value of standard, whichever is greater.
Figure 19.12
External Interrupt INT0 Input Timing Diagram when V
CC
= 5 V
Table 19.19
Serial Interface
Symbol
Parameter
Standard
Unit
Min.
Max.
t
c(CK)
CLKi input cycle time
200
−
ns
t
W(CKH)
CLKi input “H” width
100
−
ns
t
W(CKL)
CLKi input “L” width
100
−
ns
t
d(C-Q)
TXDi output delay time
−
50
ns
t
h(C-Q)
TXDi hold time
0
−
ns
t
su(D-C)
RXDi input setup time
50
−
ns
t
h(C-D)
RXDi input hold time
90
−
ns
Table 19.20
External Interrupt INT0 Input
Symbol
Parameter
Standard
Unit
Min.
Max.
t
W(INH)
INT0 input “H” width
250
(1)
−
ns
t
W(INL)
INT0 input “L” width
250
(2)
−
ns
t
W(CKH)
t
c(CK)
t
W(CKL)
t
h(C-Q)
t
h(C-D)
t
su(D-C)
t
d(C-Q)
CLKi
TXDi
RXDi
V
CC
= 5 V
i = 0 or 1
t
W(INL)
t
W(INH)
INT0 input
V
CC
= 5 V
