Datasheet

R8C/36C Group 5. Electrical Characteristics
R01DS0018EJ0110 Rev.1.10 Page 55 of 59
Nov 02, 2010
Timing requirements (Unless Otherwise Specified: VCC = 2.2 V, VSS = 0 V, Topr = 25 °C)
Figure 5.18 External Clock Input Timing Diagram when VCC = 2.2 V
Figure 5.19 TRAIO Input Timing Diagram when V
CC = 2.2 V
Notes:
1. When using timer RF input capture mode, adjust the cycle time to (1/timer RF count source frequency × 3) or above.
2. When using timer RF input capture mode, adjust the pulse width to (1/timer RF count source frequency × 1.5) or above.
Figure 5.20 TRFI Input Timing Diagram when VCC = 2.2 V
Table 5.33 External Clock Input (XOUT, XCIN)
Symbol Parameter
Standard
Unit
Min. Max.
t
c(XOUT) XOUT input cycle time 200 — ns
t
WH(XOUT) XOUT input “H” width 90 — ns
t
WL(XOUT) XOUT input “L” width 90 — ns
t
c(XCIN) XCIN input cycle time 14 — µs
t
WH(XCIN) XCIN input “H” width 7 — µs
t
WL(XCIN) XCIN input “L” width 7—µs
Table 5.34 TRAIO Input
Symbol Parameter
Standard
Unit
Min. Max.
t
c(TRAIO) TRAIO input cycle time 500 — ns
t
WH(TRAIO) TRAIO input “H” width 200 — ns
t
WL(TRAIO) TRAIO input “L” width 200 — ns
Table 5.35 TRFI Input
Symbol Parameter
Standard
Unit
Min. Max.
t
c(TRFI) TRFI input cycle time
2000
(1)
—ns
t
WH(TRFI) TRFI input “H” width
1000
(2)
—ns
t
WL(TRFI) TRFI input “L” width
1000
(2)
—ns
External clock input
tWH(XOUT),
tWH(XCIN)
tC(XOUT), tC(XCIN)
tWL(XOUT), tWL(XCIN)
VCC = 2.2 V
TRAIO input
tC(TRAIO)
tWL(TRAIO)
tWH(TRAIO)
VCC = 2.2 V
tWH(TRFI)
tc(TRFI)
tWL(TRFI)
TRFI input
VCC = 2.2 V