Datasheet

© 2007 Microchip Technology Inc. Preliminary DS70165E-page 331
dsPIC33F
FIGURE 26-15: SPIx MODULE MASTER MODE (CKE = 1) TIMING CHARACTERISTICS
TABLE 26-32: SPIx MODULE MASTER MODE (CKE = 1) TIMING REQUIREMENTS
SCKX
(CKP = 0)
SCK
X
(CKP = 1)
SDO
X
SDIX
SP36
SP30,SP31
SP35
MSb
MSb In
Bit 14 - - - - - -1
LSb In
Bit 14 - - - -1
LSb
Note: Refer to Figure 26-1 for load conditions.
SP11 SP10
SP20
SP21
SP21
SP20
SP40
SP41
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
(3)
TCY/2 — — ns —
SP11 TscH SCKx Output High Time
(3)
TCY/2 — — ns —
SP20 TscF SCKx Output Fall Time
(4)
— — — ns See parameter D032
SP21 TscR SCKx Output Rise Time
(4)
— — — ns See parameter D031
SP30 TdoF SDOx Data Output Fall
Time
(4)
— — — ns See parameter D032
SP31 TdoR SDOx Data Output Rise
Time
(4)
— — — ns See parameter D031
SP35 TscH2doV,
TscL2doV
SDOx Data Output Valid after
SCKx Edge
———ns —
SP36 TdoV2sc,
TdoV2scL
SDOx Data Output Setup to
First SCKx Edge
30 — — ns —
SP40 TdiV2scH,
TdiV2scL
Setup Time of SDIx Data
Input to SCKx Edge
20 — — ns —
SP41 TscH2diL,
TscL2diL
Hold Time of SDIx Data Input
to SCKx Edge
20 — — ns —
Note 1: These parameters are characterized but not tested in manufacturing.
2: Data in “Typ” column is at 5V, 25°C unless otherwise stated. Parameters are for design guidance only and
are not tested.
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.