R8C/35M Group
5. Electrical Characteristics
R01DS0021EJ0100 Rev.1.00
Jun 20, 2011
Notes:
1.
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.
2.
1tCYC = 1/f1(s)
Table 5.16
Timing Requirements of Synchronous Serial Communication Unit (SSU) (1) Symbol
Parameter
Conditions
Standard
Unit
Min.
Typ.
Max.
tSUCYC
SSCK clock cycle time
4
tHI
SSCK clock “H” width
0.4
0.6
tSUCYC
tLO
SSCK clock “L” width
0.4
0.6
tSUCYC
tRISE
SSCK clock rising
time
Master
1
Slave
1
s
tFALL
SSCK clock falling
time
Master
1
Slave
1
s
tSU
SSO, SSI data input setup time
100
ns
tH
SSO, SSI data input hold time
1
tLEAD
SCS setup time
Slave
1tCYC + 50
ns
tLAG
SCS hold time
Slave
1tCYC + 50
ns
tOD
SSO, SSI data output delay time
1
tSA
SSI slave access time
2.7 V
≤ VCC ≤ 5.5 V
1.5tCYC + 100
ns
1.8 V
≤ VCC < 2.7 V
1.5tCYC + 200
ns
tOR
SSI slave out open time
2.7 V
≤ VCC ≤ 5.5 V
1.5tCYC + 100
ns
1.8 V
≤ VCC < 2.7 V
1.5tCYC + 200
ns