PIC18F25K20T-ISS Datasheet, PDF (392/456 Pages) Microchip Technology – 28/40/44-Pin Flash Microcontrollers with nanoWatt XLP Technology

PIC18F2XK20/4XK20
FIGURE 26-12: EXAMPLE SPI MASTER MODE TIMING (CKE = 0)
SS
SCK
(CKP = 0)
SCK
(CKP = 1)
70
71
72
78
79
SDO
80
MSb
79
78
bit 6 - - - - - -1
LSb
75, 76
SDI
MSb In
bit 6 - - - -1
Note:
74
73
Refer to Figure 26-4 for load conditions.
LSb In
TABLE 26-14: EXAMPLE SPI MODE REQUIREMENTS (MASTER MODE, CKE = 0)
Param
No.
Symbol
Characteristic
Min
Max Units Conditions
70
TssL2scH, SS  to SCK  or SCK  Input
TssL2scL
TCY
—
71
TscH
71A
SCK Input High Time
(Slave mode)
Continuous
Single Byte
1.25 TCY + 30 —
40
—
72
TscL
72A
SCK Input Low Time
(Slave mode)
Continuous
Single Byte
1.25 TCY + 30 —
40
—
73
TdiV2scH, Setup Time of SDI Data Input to SCK Edge
TdiV2scL
100
—
73A Tb2b
Last Clock Edge of Byte 1 to the 1st Clock Edge 1.5 TCY + 40 —
of Byte 2
74
TscH2diL, Hold Time of SDI Data Input to SCK Edge
TscL2diL
100
—
75
TdoR
SDO Data Output Rise Time
—
25
76
TdoF
SDO Data Output Fall Time
—
25
78
TscR
SCK Output Rise Time
(Master mode)
—
25
79
TscF
SCK Output Fall Time (Master mode)
—
25
80
TscH2doV, SDO Data Output Valid after SCK Edge
TscL2doV
—
50
Note 1: Requires the use of Parameter #73A.
2: Only if Parameter #71A and #72A are used.
ns
ns
ns (Note 1)
ns
ns (Note 1)
ns
ns (Note 2)
ns
ns
ns
ns
ns
ns
DS41303G-page 392
 2010 Microchip Technology Inc.