ST10R172L Datasheet, PDF (67/68 Pages) STMicroelectronics – 16-BIT LOW VOLTAGE ROMLESS MCU

ST10R172L - ELECTRICAL CHARACTERISTICS
t₂₀₀
1)
SSPCLK
t₂₀₅
SSPCEx
t₂₀₂
t₂₀₁
2)
t₂₀₃
t₂₀₄
t₂₀₆
3)
SSPDAT
t₂₀₇
t₂₀₇
t₂₀₈
1st Bit
2nd Bit
t₂₀₇
t₂₀₉
Last Bit
Figure 26 SSP write timing
1)
SSPCLK
SSPCEx
SSPDAT
t₂₁₀
t₂₀₉
last Wr. Bit
2)
t₂₁₁
1st.In Bit
t₂₀₆
3)
t₂₁₂
Lst.In Bit
Figure 27 SSP read timing
1 The transition of shift and latch edge of SSPCLK is programmable. This figure uses the
falling edge as shift edge (drawn bold).
2 The bit timing is repeated for all bits to be transmitted or received.
3 The active level of the chip enable lines is programmable. This figure uses an active low
CE (drawn bold). At the end of a transmission or reception the CE signal is disabled in sin-
gle transfer mode. In continuous transfer mode it remains active.
67/68
1