Datasheet

R8C/24 Group, R8C/25 Group 5. Electrical Characteristics
Rev.3.00 Feb 29, 2008 Page 33 of 51
REJ03B0117-0300
NOTES:
1. V
CC = 2.2 to 5.5 V, VSS = 0 V at Topr = -20 to 85°C (N version) / -40 to 85°C (D version), unless otherwise specified.
2. 1t
CYC = 1/f1(s)
Table 5.13 Timing Requirements of Clock Synchronous Serial I/O with Chip Select
(1)
Symbol Parameter Conditions
Standard Unit
Min. Typ. Max.
t
SUCYC SSCK clock cycle time 4 −−
t
CYC
(2)
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
(2)
Slave −− 1 µs
t
FALL SSCK clock falling
time
Master −− 1
t
CYC
(2)
Slave −− 1 µs
t
SU SSO, SSI data input setup time 100 −− ns
t
H SSO, SSI data input hold time 1 −−
t
CYC
(2)
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
(2)
tSA SSI slave access time 2.7 V ≤ VCC ≤ 5.5 V −−1.5tCYC + 100 ns
2.2 V ≤ V
CC < 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
2.2 V ≤ V
CC < 2.7 V −−1.5tCYC + 200 ns