PIC18F2331_07 Datasheet, PDF (362/400 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High Performance PWM and A/D

PIC18F2331/2431/4331/4431
FIGURE 25-11:
SS
SCK
(CKP = 0)
SCK
(CKP = 1)
SDO
EXAMPLE SPI MASTER MODE TIMING (CKE = 0)
70
71
72
78
79
80
MSb
79
bit 6 - - - - - -1
78
LSb
75, 76
SDI
MSb In
bit 6 - - - -1
74
73
Note: Refer to Figure 25-4 for load conditions.
LSb In
TABLE 25-11: 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
of Byte 2
1.5 TCY + 40
—
74
TscH2diL, Hold Time of SDI Data Input to SCK Edge
TscL2diL
100
—
75
TdoR
SDO Data Output Rise Time PIC18FXX31
—
25
PIC18LFXX31
—
45
76
TdoF
SDO Data Output Fall Time
—
25
78
TscR
SCK Output Rise Time
(Master mode)
PIC18FXX31
PIC18LFXX31
—
25
—
45
79
TscF
SCK Output Fall Time (Master mode)
—
25
80
TscH2doV, SDO Data Output Valid after PIC18FXX31
TscL2doV SCK Edge
PIC18LFXX31
—
50
—
100
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
ns
ns
ns
DS39616C-page 360
Preliminary
© 2007 Microchip Technology Inc.