
R8C/14 Group, R8C/15 Group 19. Electrical Characteristics
Rev.2.10 Jan 19, 2006 Page 225 of 253
REJ09B0164-0210
Figure 19.5 I/O Timing of Clock Synchronous Serial I/O (SSU) with Chip Select (Slave)
VIH or VOH
VIH or VOH
SCS(Input)
SSCK(Input)
(CPOS = “1”)
SSCK(Input)
(CPOS = “0”)
SSO(Input)
SSI(Output)
4-wire bus communication mode, Slave, CPHS = “1”
VIH or VOH
VIH or VOH
tHI
tLO
tHI
tFALL
tRISE
tLO tSUCYC
tH
tSU
SCS(Input)
SSCK(Input)
(CPOS = “1”)
SSCK(Input)
(CPOS = “0”)
SSO(Input)
SSI(Output)
4-wire bus communication mode, Slave, CPHS = “0”
tOD
tLEAD
tSA
tLAG
tOR
tHI
tLO
tHI
tFALL
tRISE
tLO tSUCYC
tH
tSU
tOD
tLEAD
tSA
tLAG
tOR
CPHS, CPOS : Bits in SSMR register
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