R8C/20 Group, R8C/21 Group 20. Electrical Characteristics
Rev.2.00 Aug 27, 2008 Page 416 of 458
REJ09B0250-0200
Figure 20.4 I/O Timing of Clock Synchronous Serial I/O with Chip Select (Master)
VIH or VOH
VIH or VOH
tHI
tLO
tHI
tFALL
tRISE
tLO tSUCYC
tOD
tH
tSU
SCS (output)
SSCK (output)
(CPOS = 1)
SSCK (output)
(CPOS = 0)
SSO (output)
SSI (input)
4-wire bus communication mode, Master, CPHS = 1
VIH or VOH
VIH or VOH
tHI
tLO
tHI
tFALL
tRISE
tLO tSUCYC
tOD
tH
tSU
SCS (output)
SSCK (output)
(CPOS = 1)
SSCK (output)
(CPOS = 0)
SSO (output)
SSI (input)
4-wire bus communication mode, Master, CPHS = 0
CPHS, CPOS: Bits in SSMR register