PIC18F2331_10 Datasheet, PDF (356/392 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High-Performance PWM and A/D

PIC18F2331/2431/4331/4431
FIGURE 26-14:
SS
EXAMPLE SPI SLAVE MODE TIMING (CKE = 1)
82
70
SCK
(CKP = 0)
83
71
72
SCK
(CKP = 1)
80
SDO
SDI
MSb
bit 6 - - - - - -1
LSb
75, 76
77
MSb In
bit 6 - - - -1
LSb In
74
TABLE 26-14: 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
SCK Input High Time
Continuous
1.25 TCY + 30 —
71A
Single byte
40
—
72
TscL
SCK Input Low Time
Continuous
1.25 TCY + 30 —
72A
Single byte
40
—
73A TB2B
Last Clock Edge of Byte 1 to the First Clock Edge of Byte 2 1.5 TCY + 40 —
74
TscH2diL, Hold Time of SDI Data Input to SCK Edge
TscL2diL
40
—
75
TdoR
SDO Data Output Rise Time
PIC18FXX31
—
25
PIC18LFXX31
—
45
76
TdoF
SDO Data Output Fall Time
—
25
77
TssH2doZ SS  to SDO Output High-Impedance
10
50
80
TscH2doV, SDO Data Output Valid after SCK PIC18FXX31
TscL2doV Edge
PIC18LFXX31
—
50
—
100
82
TssL2doV SDO Data Output Valid after SS  PIC18FXX31
Edge
PIC18LFXX31
—
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
DS39616D-page 356
 2010 Microchip Technology Inc.