Datasheet

PIC32MX3XX/4XX
DS61143H-page 174 © 2011 Microchip Technology Inc.
FIGURE 29-13: SPIx MODULE SLAVE MODE (CKE = 1) TIMING CHARACTERISTICS
SSx
SCKx
(CKP = 0)
SCKx
(CKP = 1)
SDOx
SDI
SP50
SP60
SDIx
SP30,SP31
MSb
Bit 14 - - - - - -1 LSb
SP51
MSb In Bit 14 - - - -1 LSb In
SP35
SP52
SP73
SP72
SP72
SP73
SP71 SP70
SP40
SP41
Note: Refer to Figure 29-1 for load conditions.
TABLE 29-31: SPIx MODULE SLAVE MODE (CKE = 1) TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C ≤ TA ≤ +85°C for Industrial
-40°C ≤ TA ≤ +105°C for V-Temp
Param.
No.
Symbol Characteristics
(1)
Min. Typical
(2)
Max. Units Conditions
SP70 T
SCL SCKx Input Low Time
(3)
TSCK/2
——ns —
SP71 TSCH SCKx Input High Time
(3)
TSCK/2 — — ns —
SP72 T
SCF SCKx Input Fall Time — 5 10 ns —
SP73 T
SCR SCKx Input Rise Time —
510
ns —
SP30 TDOF SDOx Data Output Fall Time
(4)
———ns
See parameter DO32
SP31 TDOR SDOx Data Output Rise Time
(4)
———ns
See parameter DO31
SP35 TSCH2DOV,
T
SCL2DOV
SDOx Data Output Valid after
SCKx Edge
——
20
ns
V
DD > 2.7V
——
30
ns
VDD < 2.7V
SP40 T
DIV2SCH,
TDIV2SCL
Setup Time of SDIx Data Input
to SCKx Edge
10
——ns —
SP41 T
SCH2DIL,
T
SCL2DIL
Hold Time of SDIx Data Input
to SCKx Edge
10
——ns —
SP50 T
SSL2SCH,
T
SSL2SCL
SSx
↓ to SCKx ↓ or SCKx ↑
Input
175 — — ns —
SP51 T
SSH2DOZ SSx ↑ to SDOX Output
High-Impedance
(4)
5 — 25 ns —
SP52 T
SCH2SSH
T
SCL2SSH
SSx
↑ after SCKx Edge TSCK +
20
——ns —
SP60 T
SSL2DOV SDOx Data Output Valid after
SSx
Edge
——
25
ns —
Note 1: These parameters are characterized, but not tested in manufacturing.
2: Data in “Typical” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only
and are not tested.
3: The minimum clock period for SCKx is 40 ns.
4: Assumes 50 pF load on all SPIx pins.