50.4.15 SPI Mode Requirements

Table 50-21. SPI Host Mode
Standard Operating Conditions (unless otherwise stated)
Param No. Sym. Characteristic Min. Typ. † Max. Units Conditions
TSCK SCK Cycle Time (2x Prescaled) 61 — — ns Transmit Only mode
— 16(1) — MHz
95 — — ns Full Duplex mode
— 10(1) — MHz
SP70*

TSSL2SCH,

TSSL2SCL

 SDO to SCK↓ or SCK↑ input TSCK — — ns FST = 0
0 — — ns FST = 1
SP71* TSCH SCK output high time 0.5 TSCK - 12 — 0.5 TSCK + 12 ns
SP72* TSCL SCK output low time 0.5 TSCK - 12 — 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 -15 — 15 ns CL = 50 pF
SP81*

TDOV2SCH,

TDOV2SCL

 SDO data output valid to first SCK edge TSCK - 10 — — 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 TSCK - 10 — — ns
SP84*

TSSH2SSL

 SS ↑ to SS↓ edge TSCK - 10 — — 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 SPIxCON1 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.
Table 50-22. SPI Client Mode
Standard Operating Conditions (unless otherwise stated)
Param No. Sym. Characteristic Min. Typ. † Max. Units Conditions
TSCK SCK Total Cycle Time 47 — — ns Receive Only mode
— 20(1) — MHz
95 — — ns Full-Duplex mode
— 10(1) — MHz
SP70*

TSSL2SCH,

TSSL2SCL

 SS↓ to SCK↓ or SCK↑ input 0 — — ns CKE = 0
25 — — ns CKE = 1
SP71* TSCH SCK input high time 20 — — ns
SP72* TSCL SCK input low time 20 — — ns
SP73*

TDIV2SCH,

TDIV2SCL

 Setup time of SDI data input to SCK edge 10 — — ns
SP74*

TSCH2DIL,

TSCL2DIL

 Hold time of SDI data input to SCK edge 0 — — ns
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
SP77* TSSH2DOZ SS↑ to SDO output high-impedance — — 85 ns
SP80*

TSCH2DOV,

TSCL2DOV

 SDO data output valid after SCK edge — — 85 ns
SP82* TSSL2DOV SDO data output valid after SS↓ edge — — 85 ns
SP83*

TSCH2SSH,

TSCL2SSH

 SS ↑ after SCK edge 20 — — ns
SP84*

TSSH2SSL

 SS ↑ to SS↓ edge 47 — — 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 SPIxCON1 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 50-13. SPI Host Mode Timing (CKE = 0, SMP = 0)
Note: Refer to the Load Conditions figure for more details.
Figure 50-14. SPI Host Mode Timing (CKE = 1, SMP = 1)
Note: Refer to the Load Conditions figure for more details.
Figure 50-15. SPI Client Mode Timing (CKE = 0)
Note: Refer to the Load Conditions figure for more details.
Figure 50-16. SPI Client Mode Timing (CKE = 1)
Note: Refer to the Load Conditions figure for more details.