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
Table 5.20
Serial Interface
Standard
Symbol
Parameter
Unit
Min.
200
100
100
−
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)
−
90
−
0
RXDi input setup time
RXDi input hold time
50
−
90
−
i = 0, 2
VCC = 5 V
tC(CK)
tW(CKH)
CLKi
tW(CKL)
th(C-Q)
TXDi
RXDi
td(C-Q)
tsu(D-C)
th(C-D)
i = 0, 2
Figure 5.9
Serial Interface Timing Diagram when VCC = 5 V
Table 5.21
External Interrupt INTi (i = 0 to 4) Input, Key Input Interrupt KIi (i = 0 to 3)
Standard
Symbol
Parameter
Unit
Min.
Max.
(1)
tW(INH)
tW(INL)
−
−
ns
ns
250
250
INTi input “H” width, KIi input “H” width
INTi input “L” width, KIi input “L” width
(2)
Notes:
1. When selecting the digital filter by the INTi input filter select bit, use an INTi input HIGH width of either (1/digital filter clock
frequency × 3) or the minimum value of standard, whichever is greater.
2. When selecting the digital filter by the INTi input filter select bit, use an INTi input LOW width of either (1/digital filter clock
frequency × 3) or the minimum value of standard, whichever is greater.
VCC = 5 V
INTi input
(i = 0 to 4)
tW(INL)
KIi input
(i = 0 to 3)
tW(INH)
Figure 5.10
Input Timing for External Interrupt INTi and Key Input Interrupt KIi when Vcc = 5 V
REJ03B0312-0010 Rev.0.10
Apr 09, 2010
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