26
4173ES–USB–09/07
AT89C5132
Figure 6-14. SPI Master Waveforms (SSCPHA = 0)

Note: 1. SS handled by software using general purpose port pin.

Figure 6-15. SPI Master Waveforms (SSCPHA = 1)

Note: 1. SS handled by software using general purpose port pin.

6.3.4 Two-wire Interface6.3.4.1 Timings Table 17. TWI Interfac e AC Timing
TCHCL
TCLCH
MOSI
(input)
SCK
(SSCPOL = 0)
(input)
SS1
(input)
SCK
(SSCPOL = 1)
(input)
MISO
(output)
TCHCH
TCLCX
TCHCX
TIVCL TCLIX
TCHIX
TIVCH
TCLOV
TCHOV TCLOX
TCHOX
MSB IN BIT 6 LSB IN
SLAVE MSB OUT SLAVE LSB OUTBIT 6
TSLOV
1
TSHOX
TSHSL
TCHSH
TCLSH
TSLCL
TSLCH
SI
(input)
SCK
(SSCPOL = 0)
(output)
SS1
(output)
SCK
(SSCPOL = 1)
(output)
SO
(output)
TCHCH
TCLCX
TCHCX
TIVCL TCLIX
TCHIX
TIVCH
TCHOV
TCLOV
TCHOX
TCLOX
MSB IN BIT 6 LSB IN
MSB OUTPort Data LSB OUT P ort DataBIT 6
TCHCL
TCLCH