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PIC17C7XX_13 Datasheet, PDF (256/306 Pages) Microchip Technology – High-Performance 8-bit CMOS EPROM Microcontrollers with 10-bit A/D | |||
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PIC17C7XX
FIGURE 20-15: SPI SLAVE MODE TIMING (CKE = 0)
SS
70
SCK
(CKP = 0)
71
72
78
SCK
(CKP = 1)
SDO
80
MSb
79
BIT6 - - - - - -1
SDI
Note:
75, 76
MSb IN
BIT6 - - - -1
74
73
Refer to Figure 20-5 for load conditions.
83
79
78
LSb
77
LSb IN
TABLE 20-10: SPI MODE REQUIREMENTS (SLAVE MODE TIMING, CKE = 0)
Param.
No.
Symbol
Characteristic
Min
70 TssL2scH, SSï¯ to SCKï¯ or SCKï input
Tcy
TssL2scL
71 TscH
71A
SCK input high time
(Slave mode)
Continuous
Single Byte
1.25TCY + 30
40
72 TscL
72A
SCK input low time
(Slave mode)
Continuous
Single Byte
1.25TCY + 30
40
73 TdiV2scH, Setup time of SDI data input to SCK edge
100
TdiV2scL
73A TB2B
Last clock edge of Byte1 to the 1st clock edge
of Byte2
1.5TCY + 40
74 TscH2diL, Hold time of SDI data input to SCK edge
100
TscL2diL
75 TdoR
SDO data output rise time
â
76 TdoF
SDO data output fall time
â
77 TssH2doZ SSï to SDO output hi-impedance
10
78 TscR
SCK output rise time (Master mode)
â
79 TscF
SCK output fall time (Master mode)
â
80 TscH2doV, SDO data output valid after SCK edge
â
TscL2doV
83 TscH2ssH, SS ï after SCK edge
TscL2ssH
1.5TCY + 40
â
Data in "Typ" column is at 5V, 25°C unless otherwise stated.
Note 1: Specification 73A is only required if specifications 71A and 72A are used.
Typâ Max Units Conditions
â â ns
â â ns
â â ns (Note 1)
â â ns
â â ns (Note 1)
â â ns
â â ns (Note 1)
â â ns
10 25 ns
10 25 ns
â 50 ns
10 25 ns
10 25 ns
â 50 ns
â â ns
DS30289C-page 256
ï£ 1998-2013 Microchip Technology Inc.
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