Datasheet

dsPIC33FJXXXGPX06/X08/X10
DS70286C-page 276 © 2009 Microchip Technology Inc.
FIGURE 25-9: SPIx MODULE MASTER MODE (CKE = 0) TIMING CHARACTERISTICS
SCKx
(CKP = 0)
SCKx
(CKP = 1)
SDOx
SDIx
SP11 SP10
SP40
SP41
SP21
SP20
SP35
SP20
SP21
MSb LSb
Bit 14 - - - - - -1
MSb In
LSb In
Bit 14 - - - -1
SP30
SP31
Note: Refer to Figure 25-1 for load conditions.
TABLE 25-28: SPIx MASTER MODE (CKE = 0) TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 3.0V to 3.6V
(unless otherwise stated)
Operating temperature -40°C ≤ TA ≤ +85°C
Param
No.
Symbol Characteristic
(1)
Min Typ
(2)
Max Units Conditions
SP10 TscL SCKx Output Low Time TCY/2 — — ns
See Note 3
SP11 TscH SCKx Output High Time T
CY/2 — — ns See Note 3
SP20 TscF SCKx Output Fall Time — — — ns See parameter D032
and Note 4
SP21 TscR SCKx Output Rise Time — — — ns See parameter D031
and Note 4
SP30 TdoF SDOx Data Output Fall Time — — — ns See parameter D032
and Note 4
SP31 TdoR SDOx Data Output Rise Time — — — ns See parameter D031
and Note 4
SP35 TscH2doV,
TscL2doV
SDOx Data Output Valid after
SCKx Edge
—620ns —
SP40 TdiV2scH,
TdiV2scL
Setup Time of SDIx Data Input
to SCKx Edge
23 — — ns —
SP41 TscH2diL,
TscL2diL
Hold Time of SDIx Data Input
to SCKx Edge
30 — — ns —
Note 1: These parameters are characterized but not tested in manufacturing.
2: Data in “Typ” column is at 3.3V, 25°C unless otherwise stated.
3: The minimum clock period for SCKx is 100 ns. Therefore, the clock generated in Master mode must not
violate this specification.
4: Assumes 50 pF load on all SPIx pins.