44.4.17 SPI Mode Requirements

Table 44-23. SPI Mode
Standard Operating Conditions (unless otherwise stated)
Param No. Sym. Characteristic Min. Typ. † Max. Units Conditions
SP70*

TSSL2SCH,

TSSL2SCL

 SDO to SCK↓ or SCK↑ input 2.25*TCY — — ns
SP71* TSCH SCK output high time TCY + 20 — 0.5 TSCK + 12 ns
SP72* TSCL SCK output low time TCY + 20 — 0.5 TSCK + 12 ns
SP73*

TDIV2SCH,

TDIV2SCL

 Setup time of SDI data input to SCK edge 85 — — ns
SP74*

TSCH2DIL,

TSCL2DIL

 Hold time of SDI data input to SCK edge 0 — — ns
Hold time of SDI data input to final SCK 0.5 TSCK ns CKE = 0,

SMP = 1
SP75* TDOR SDO data output rise time — 10 25 ns CL = 50 pF
SP76* TDOF SDO data output fall time — 10 25 ns CL = 50 pF
SP78* TSCR SCK output rise time — 10 25 ns CL = 50 pF
SP79* TSCF SCK output fall time — 10 25 ns CL = 50 pF
SP80*

TSCH2DOV,

TSCL2DOV

 SDO data output valid after SCK edge — — — ns CL = 50 pF
SP81*

TDOV2SCH,

TDOV2SCL

 SDO data output valid to first SCK edge 1 TCY — — ns

CL = 50 pF

CKE = 1
SP82* TSSL2DOV SDO data output valid after SS↓ edge — — 50 ns CL = 20 pF
SP83*

TSCH2SSH,

TSCL2SSH

 SS ↑ after last SCK edge 1.5 TCY + 40 — — ns

* These parameters are characterized but not tested.

† Data in “Typ” column is at 3.0V, 25°C unless otherwise stated. These parameters are for design guidance only and are not tested.

Note:
  1. The SMP bit in the SSPxSTAT register must be set and the slew rate control must be disabled on the clock and data pins (clear the corresponding bits in SLRCONx register) for SPI to operate over 4 MHz.
Figure 44-15. SPI Host Mode Timing (CKE = 0, SMP = 0)
Note: Refer to Figure 44-3 for load conditions.
Figure 44-16. SPI Host Mode Timing (CKE = 1, SMP = 1)
Note: Refer to Figure 44-3 for load conditions.
Figure 44-17. SPI Client Mode Timing (CKE = 0)
Note: Refer to Figure 44-3 for load conditions.
Figure 44-18. SPI Client Mode Timing (CKE = 1)
Note: Refer to Figure 44-3 for load conditions.