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PIC18F87K22 Datasheet, PDF (514/548 Pages) Microchip Technology – 64/80-Pin, High-Performance, 1-Mbit Enhanced Flash Microcontrollers with 12-Bit A/D and nanoWatt XLP Technology | |||
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PIC18F87K22 FAMILY
FIGURE 31-18:
SSx
EXAMPLE SPI SLAVE MODE TIMING (CKE = 1)
82
70
SCKx
(CKPx = 0)
71
72
SCKx
(CKPx = 1)
80
SDOx
MSb
bit 6 - - - - - - 1
SDIx
MSb In
75, 76
bit 6 - - - - 1
74
Note: Refer to Figure 31-3 for load conditions.
LSb
LSb In
83
77
TABLE 31-19: EXAMPLE SPI SLAVE MODE REQUIREMENTS (CKE = 1)
Param
No.
Symbol
Characteristic
Min
Max Units Conditions
70 TSSL2SCH, SSx ï¯ to SCKx ï¯ or SCKx ï Input
TSSL2SCL
3 TCY
â
70A TSSL2WB SSx to write to SSPBUF
3 TCY
â
71
TSCH
71A
SCKx Input High Time
(Slave mode)
Continuous
Single Byte
1.25 TCY + 30 â
40
â
72
TSCL
72A
SCKx Input Low Time
(Slave mode)
Continuous
Single Byte
1.25 TCY + 30 â
40
â
73A TB2B
Last Clock Edge of Byte 1 to the First Clock Edge of Byte 2 1.5 TCY + 40 â
74 TSCH2DIL, Hold Time of SDIx Data Input to SCKx Edge
TSCL2DIL
40
â
75
TDOR
SDOx Data Output Rise Time
â
25
76
TDOF
SDOx Data Output Fall Time
â
25
77 TSSH2DOZ SSx ï to SDOx Output High-Impedance
10
50
78
TSCR
SCKx Output Rise Time (Master mode)
â
25
79
TSCF
SCKx Output Fall Time (Master mode)
â
25
80 TSCH2DOV, SDOx Data Output Valid after SCKx Edge
TSCL2DOV
â
50
82 TSSL2DOV SDOx Data Output Valid after SSx ï¯ Edge
â
50
83 TSCH2SSH, SSx ï after SCKx Edge
TSCL2SSH
1.5 TCY + 40 â
Note 1: Requires the use of Parameter #73A.
2: Only if Parameter #71A and #72A are used.
ns
ns
ns
ns (Note 1)
ns
ns (Note 1)
ns (Note 2)
ns
ns
ns
ns
ns
ns
ns
ns
ns
DS39960B-page 514
Preliminary
ï£ 2010 Microchip Technology Inc.
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