Waveforms
Figure 145. SPI Slave Waveforms (SSCPHA= 0)
SS
(input)
TCLSH
TCHSH
TSLCH
TSLCL
TCHCH
TSHSL
TCLCH
SCK
(SSCPOL= 0)
(input)
TCHCX
TCLCX
TCHCL
SCK
(SSCPOL= 1)
(input)
TCLOX
TCHOX
TCLOV
TCHOV
TSLOV
TSHOX
MISO
(output)
(1)
SLAVE MSB OUT
TIVCH TCHIX
BIT 6
SLAVE LSB OUT
TIVCL
TCLIX
MOSI
(input)
MSB IN
BIT 6
LSB IN
Note:
1. Not Defined but generally the MSB of the character which has just been received.
Figure 146. SPI Slave Waveforms (SSCPHA= 1)
SS
(input)
TSLCH
TSLCL
TCLSH
TCHSH
TCHCH
TSHSL
TCLCH
SCK
(SSCPOL= 0)
(input)
TCHCX
TCLCX
TCHCL
SCK
(SSCPOL= 1)
(input)
TCHOV
TCLOV
TCHOX
TCLOX
TSLOV
TSHOX
MISO
(output)
(1)
SLAVE MSB OUT
BIT 6
SLAVE LSB OUT
TCHIX
TCLIX
TIVCH
TIVCL
MOSI
(input)
MSB IN
BIT 6
LSB IN
Note:
1. Not Defined but generally the LSB of the character which has just been received.
14
AT85C51SND3Bx
7632A–MP3–03/06
ATMEL [ ATMEL ]
