Datasheet

R8C/32D Group 5. Electrical Characteristics
REJ03B0288-0100 Rev.1.00 Feb 26, 2010
Page 36 of 42
Timing requirements
(Unless Otherwise Specified: VCC = 3 V, VSS = 0 V at Topr = 25°C)
Figure 5.8 External Clock Input Timing Diagram when VCC = 3 V
Figure 5.9 TRAIO Input Timing Diagram when VCC = 3 V
Table 5.21 External Clock Input (XOUT, XCIN)
Symbol Parameter
Standard
Unit
Min. Max.
tc(XOUT) XOUT input cycle time 50 − ns
tWH(XOUT) XOUT input “H” width 24 − ns
tWL(XOUT) XOUT input “L” width 24 − ns
tc(XCIN) XCIN input cycle time 14 −µs
tWH(XCIN) XCIN input “H” width 7 −µs
tWL(XCIN) XCIN input “L” width 7 −µs
Table 5.22 TRAIO Input
Symbol Parameter
Standard
Unit
Min. Max.
tc(TRAIO) TRAIO input cycle time 300 − ns
tWH(TRAIO) TRAIO input “H” width 120 − ns
tWL(TRAIO) TRAIO input “L” width 120 − ns
VCC = 3 V
External Clock Input
tWH(XOUT),
tWH(XCIN)
tC(XOUT), tC(XCIN)
tWL(XOUT), tWL(XCIN)
TRAIO input
VCC = 3 V
tC(TRAIO)
tWL(TRAIO)
tWH(TRAIO)