R8C/1A Group, R8C/1B Group
19. Electrical Characteristics
Rev.1.30
Dec 08, 2006
Page 290 of 315
REJ09B0252-0130
Timing Requirements
(Unless otherwise specified: V
CC
= 5 V, V
SS
= 0 V at Ta = 25
°
C) [ V
CC
= 5 V ]
Figure 19.8
XIN
Input Timing Diagram when V
CC
= 5 V
Figure 19.9
CNTR0 Input, CNTR1 Input, INT1 Input Timing Diagram when V
CC
= 5 V
NOTES:
1.
When using timer C input capture mode, adjust the cycle time to (1/timer C count source frequency x 3) or above.
2.
When using timer C input capture mode, adjust the pulse width to (1/timer C count source frequency x 1.5) or above.
Figure 19.10
TCIN Input, INT3 Input Timing Diagram when V
CC
= 5 V
Table 19.16
XIN
Input
Symbol
Parameter
Standard
Unit
Min.
Max.
t
c(XIN)
XIN input cycle time
50
−
ns
t
WH(XIN)
XIN input “H” width
25
−
ns
t
WL(XIN)
XIN input “L” width
25
−
ns
Table 19.17
CNTR0 Input, CNTR1 Input, INT1 Input
Symbol
Parameter
Standard
Unit
Min.
Max.
t
c(CNTR0)
CNTR0 input cycle time
100
−
ns
t
WH(CNTR0)
CNTR0 input “H” width
40
−
ns
t
WL(CNTR0)
CNTR0 input “L” width
40
−
ns
Table 19.18
TCIN Input, INT3 Input
Symbol
Parameter
Standard
Unit
Min.
Max.
t
c(TCIN)
TCIN input cycle time
400
(1)
−
ns
t
WH(TCIN)
TCIN input “H” width
200
(2)
−
ns
t
WL(TCIN)
TCIN input “L” width
200
(2)
−
ns
t
WH(XIN)
t
c(XIN)
t
WL(XIN)
XIN input
V
CC
= 5 V
t
WH(CNTR0)
t
c(CNTR0)
t
WL(CNTR0)
CNTR0 input
V
CC
= 5 V
t
WH(TCIN)
t
c(TCIN)
t
WL(TCIN)
TCIN input
V
CC
= 5 V
