PIC18F258-I/SP View Datasheet(PDF) - Microchip Technology
Part Name
Description
Manufacturer
PIC18F258-I/SP
Microchip Technology
PIC18F258-I/SP Datasheet PDF : 402 Pages
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PIC18FXX8
FIGURE 27-16:
SS
EXAMPLE SPI™ SLAVE MODE TIMING (CKE = 1)
82
70
SCK
83
(CKP = 0)
71
72
SCK
(CKP = 1)
80
SDO
MSb
Bit 6 - - - - - -1
LSb
75, 76
77
SDI
MSb In
Bit 6 - - - -1
LSb In
74
Note: Refer to Figure 27-5 for load conditions.
TABLE 27-16: EXAMPLE SPI™ SLAVE MODE REQUIREMENTS (CKE = 1)
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
—
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
PIC18FXX8
—
25
PIC18LFXX8
—
45
76 TdoF
SDO Data Output Fall Time
—
25
77 TssH2doZ SS ↑ to SDO Output High-Impedance
10
50
78 TscR
SCK Output Rise Time
(Master mode)
PIC18FXX8
PIC18LFXX8
—
25
—
45
79 TscF
SCK Output Fall Time (Master mode)
—
25
80 TscH2doV, SDO Data Output Valid after SCK PIC18FXX8
TscL2doV Edge
PIC18LFXX8
—
50
—
100
82 TssL2doV SDO Data Output Valid after SS ↓ PIC18FXX8
Edge
PIC18LFXX8
—
50
—
100
83 TscH2ssH, SS ↑ after SCK Edge
TscL2ssH
1.5 TCY + 40 —
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 (Note 2)
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
DS41159E-page 352
© 2006 Microchip Technology Inc.
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