Datasheet

R8C/32C Group 5. Electrical Characteristics
R01DS0009EJ0100 Rev 1.00 Page 42 of 52
Aug. 24, 2010
Timing Requirements
(Unless Otherwise Specified: V
CC = 5 V, VSS = 0 V at Topr = 25°C)
Figure 5.8 External Clock
Input Timing Diagram when VCC = 5 V
Figure 5.9 TRAIO Input Timing Diagram when V
CC = 5 V
Table 5.18 External Clock Input (XOUT, XCIN)
Symbol Parameter
Standard
Unit
Min. Max.
t
c(XOUT) XOUT input cycle time 50 − ns
t
WH(XOUT) XOUT input “H” width 24 − ns
t
WL(XOUT) XOUT input “L” width 24 − 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 5.19 TRAIO Input
Symbol Parameter
Standard
Unit
Min. Max.
t
c(TRAIO) TRAIO input cycle time 100 − ns
t
WH(TRAIO) TRAIO input “H” width 40 − ns
t
WL(TRAIO) TRAIO input “L” width 40 − ns
External Clock
Input
tWH(XOUT),
tWH(XCIN)
tC(XOUT), tC(XCIN)
tWL(XOUT), tWL(XCIN)
VCC = 5 V
TRAIO input
VCC = 5 V
tC(TRAIO)
tWL(TRAIO)
tWH(TRAIO)