
5. Electrical Characteristics
REJ03B0243-0030 Rev.0.30
Jan 21, 2009
R8C/L35A Group, R8C/L36A Group, R8C/L38A Group, R8C/L3AA Group,
R8C/L35B Group, R8C/L36B Group, R8C/L38B Group, R8C/L3AB Group
Under development Preliminary specification
Specifications in this manual are tentative and subject to change.
i = 0 to 2
Figure 5.10
Input and Output Timing of Serial Interface
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.
Figure 5.11
Input Timing of External Interrupt INTi and Key Input Interrupt KIi
Table 5.28
Timing Requirements of Serial Interface
(VCC = 1.8 to 5.5 V, VSS = 0 V, and Topr =
20 to 85°C (N version) / 40 to 85°C (D version),
unless otherwise specified.)
Symbol
Parameter
Standard
Unit
VCC = 2.2V, Topr = 25
°CVCC = 3V, Topr = 25°CVCC = 5V, Topr = 25°C
Min.
Max.
Min.
Max.
Min.
Max.
tc(CK)
CLKi input cycle time
800
300
200
ns
tW(CKH)
CLKi input “H” width
400
150
100
ns
tW(CKL)
CLKi input “L” width
400
150
100
ns
td(C-Q)
TXDi output delay time
200
80
50
ns
th(C-Q)
TXDi hold time
0
0
0
ns
tsu(D-C)
RXDi input setup time
150
70
50
ns
th(C-D)
RXDi input hold time
90
90
90
ns
Table 5.29
Timing Requirements of External Interrupt INTi (i = 0 to 7) and Key Input Interrupt KIi
(i = 0 to 7)
(VCC = 1.8 to 5.5 V, VSS = 0 V, and Topr =
20 to 85°C (N version) / 40 to 85°C (D version),
unless otherwise specified.)
Symbol
Parameter
Standard
Unit
VCC = 2.2V, Topr = 25
°CVCC = 3V, Topr = 25°CVCC = 5V, Topr = 25°C
Min.
Max.
Min.
Max.
Min.
Max.
tW(INH)
INTi input “H” width, KIi input “H” width
ns
tW(INL)
INTi input “L” width, KIi input “L” width
ns
tW(CKH)
tC(CK)
tW(CKL)
th(C-Q)
th(C-D)
tsu(D-C)
td(C-Q)
CLKi
TXDi
RXDi
i = 0 to 2
INTi input
(i = 0 to 7)
tW(INL)
tW(INH)
KIi input
(i = 0 to 7)