R8C/36T-A Group 4. Electrical Characteristics
R01DS0055EJ0100 Rev.1.00 Page 49 of 58
Dec 09, 2011
4.5 AC Characteristics
Note:
1. 1t
CYC = 1/f1 (s)
Table 4.20 Timing Requirements of Clock Synchronous Serial I/O with Chip Select
(during Master Operation)
(Measurement conditions: Vcc = 1.8 V to 5.5 V, Topr = 20°C to 85°C (N version)/
40°C to 85°C (D version))
Symbol Parameter Conditions
Standard
Unit
Min. Typ. Max.
t
SUCYC SSCK clock cycle time 4.00 ――
t
CYC
(1)
tHI SSCK clock high width 0.40 ― 0.60 tSUCYC
tLO SSCK clock low width 0.40 ― 0.60 tSUCYC
tRISE SSCK clock rising time 2.7 V Vcc 5.5 V ――0.50
t
CYC
(1)
1.8 V Vcc 2.7 V ――1.00
t
CYC
(1)
tFALL SSCK clock falling time 2.7 V Vcc 5.5 V ――0.50
t
CYC
(1)
1.8 V Vcc 2.7 V ――1.00
t
CYC
(1)
tSU SSI, SSO data input setup time 4.5 V Vcc 5.5 V 60 ――ns
2.7 V
Vcc 4.5 V 70 ――ns
1.8 V
Vcc 2.7 V 100 ――ns
t
H SSI, SSO data input hold time 2.7 V Vcc 5.5 V 2.00 ――
t
CYC
(1)
1.8 V Vcc 2.7 V 2.00 ――
t
CYC
(1)
tLEAD
SCS-SCK output delay time
0.5 t
SUCYC - 1 tCYC ――ns
t
LAG
SCK -SCS output valid time
0.5 t
SUCYC - 1 tCYC ――ns
t
OD SSO data output delay time 2.7 V Vcc 5.5 V ――30.00 ns
1.8 V
Vcc 2.7 V ――1.00
t
CYC
(1)
