Datasheet

R8C/1A Group, R8C/1B Group 5. Electrical Characteristics
Rev.1.40 Dec 08, 2006 Page 39 of 45
REJ03B0144-0140
i = 0 or 1
Figure 5.11 Serial Interface Timing Diagram when VCC = 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 5.12 External Interrupt INT0 Input Timing Diagram when VCC = 5 V
Table 5.19 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 5.20 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
tW(CKH)
tc(CK)
tW(CKL)
th(C-Q)
th(C-D)tsu(D-C)td(C-Q)
CLKi
TXDi
RXDi
VCC = 5 V
i = 0 or 1
tW(INL)
tW(INH)
INT0 input
VCC = 5 V