Datasheet
R8C/L35C Group, R8C/L36C Group, R8C/L38C Group, R8C/L3AC Group 5. Electrical Characteristics
R01DS0095EJ0101 Rev.1.01 Page 62 of 72
Apr 15, 2011
5.5 AC Characteristics
Note:
1. 1t
CYC = 1/f1(s)
Table 5.23 Timing Requirements of Synchronous Serial Communication Unit (SSU)
(V
CC = 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 Conditions
Standard
Unit
Min. Typ. Max.
t
SUCYC SSCK clock cycle time
4— —
t
CYC
(1)
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
t
CYC
(1)
Slave — — 1 µs
t
FALL SSCK clock falling
time
Master
—— 1
t
CYC
(1)
Slave — — 1 µs
t
SU SSO, SSI data input setup time 100 — — ns
t
H SSO, SSI data input hold time
1— —
t
CYC
(1)
tLEAD
SCS setup time
Slave
1t
CYC + 50 — — ns
t
LAG
SCS hold time
Slave
1t
CYC + 50 — — ns
t
OD SSO, SSI data output delay time
—— 1
t
CYC
(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
t
OR 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