Chapter 14 Inter-Integrated Circuit (IICV3) Block Description
S12ZVHY/S12ZVHL Family Reference Manual Rev. 1.05
Freescale Semiconductor
547
Figure 14-5. SCL Divider and SDA Hold
The equation used to generate the divider values from the IBFD bits is:
SCL Divider = MUL x {2 x (s [(SCL_Tap -1) x tap2tap] + 2)}
The SDA hold delay is equal to the CPU clock period multiplied by the SDA Hold value shown in
. The equation used to generate the SDA Hold value from the IBFD bits is:
SDA Hold = MUL x {s [(SDA_Tap - 1) x tap2tap] + 3}
The equation for SCL Hold values to generate the start and stop conditions from the IBFD bits is:
SCL Hold(start) = MUL x [scl (SCL_Tap - 1) x tap2tap]
SCL Hold(stop) = MUL x [sc (SCL_Tap - 1) x tap2tap]
Table 14-7. IIC Divider and Hold Values (Sheet 1 of 6)
IBC[7:0]
(hex)
SCL Divider
(clocks)
SDA Hold
(clocks)
SCL Hold
(start)
SCL Hold
(stop)
MUL=1
SCL Divider
SDA Hold
SCL
SDA
SDA
SCL
START condition
STOP condition
SCL Hold(start)
SCL Hold(stop)
Содержание MC9S12ZVHL32
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Страница 788: ...Appendix A MCU Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 788 Freescale Semiconductor...
Страница 794: ...Appendix B ADC Electricals S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 794 Freescale Semiconductor...
Страница 798: ...Appendix D IRC Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 798 Freescale Semiconductor...
Страница 802: ...Appendix F MSCAN Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 802 Freescale Semiconductor...
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Страница 810: ...Appendix H BATS Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 810 Freescale Semiconductor...
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Страница 822: ...Appendix L SPI Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 822 Freescale Semiconductor...
Страница 826: ...Appendix M LINPHY Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 826 Freescale Semiconductor...
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