Preliminary document
Specifications in this document are tentative and subject to change.
Under development
R8C/34W Group, R8C/34X Group, R8C/34Y Group, R8C/34Z Group
5. Electrical Characteristics
Timing requirements
(Unless Otherwise Specified: VCC = 3 V, VSS = 0 V at Topr =
−
40°
C to 85
°
C (J ver)/
−
40
°C to 125
°C (K ver))
Table 5.25
External clock input (XOUT)
Standard
Symbol
Parameter
Unit
Min.
Max.
tc(XOUT)
XOUT input cycle time
XOUT input “H” width
XOUT input “L” width
50
24
24
−
−
−
ns
ns
ns
tWH(XOUT)
tWL(XOUT)
tC(XOUT)
VCC = 3 V
tWH(XOUT)
External Clock Input
tWL(XOUT)
Figure 5.11
External Clock Input Timing Diagram when VCC = 3 V
Table 5.26
TRAIO Input
Standard
Symbol
Parameter
Unit
Min.
300
120
120
Max.
tc(TRAIO)
TRAIO input cycle time
TRAIO input “H” width
TRAIO input “L” width
−
−
−
ns
ns
ns
tWH(TRAIO)
tWL(TRAIO)
VCC = 3 V
tC(TRAIO)
tWH(TRAIO)
TRAIO input
tWL(TRAIO)
Figure 5.12
TRAIO Input Timing Diagram when VCC = 3 V
Table 5.27
Serial Interface
Standard
Symbol
Parameter
Unit
Min.
300
150
150
−
Max.
tc(CK)
CLKi input cycle time
CLKi input “H” width
CLKi Input “L” width
TXDi output delay time
TXDi hold time
−
−
ns
ns
ns
ns
ns
ns
ns
tW(CKH)
tW(CKL)
td(C-Q)
th(C-Q)
tsu(D-C)
th(C-D)
−
140
−
0
RXDi input setup time
RXDi input hold time
70
−
90
−
i = 0, 2
REJ03B0312-0010 Rev.0.10
Apr 09, 2010
Page 65 of 67