PIC18F2420 MICROCHIP [Microchip Technology], PIC18F2420 Datasheet - Page 351

• Manufacturer Part Number: PIC18F2420
• Description: 28/40/44-Pin Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

FIGURE 26-12:
TABLE 26-14: EXAMPLE SPI MODE REQUIREMENTS (MASTER MODE, CKE = 0)
 2004 Microchip Technology Inc.
70
71
71A
72
72A
73
73A
74
75
76
78
79
80
Note 1:
Param
No.
(CKP = 0)
(CKP = 1)
SDI
SCK
SDO
SS
SCK
Note:
2:
TssL2scH,
TssL2scL
TscH
TscL
TdiV2scH,
TdiV2scL
Tb2b
TscH2diL,
TscL2diL
TdoR
TdoF
TscR
TscF
TscH2doV,
TscL2doV
Requires the use of Parameter #73A.
Only if Parameter #71A and #72A are used.
Symbol
Refer to Figure 26-4 for load conditions.
EXAMPLE SPI MASTER MODE TIMING (CKE = 0)
SS
SCK Input High Time
(Slave mode)
SCK Input Low Time
(Slave mode)
Setup Time of SDI Data Input to SCK Edge
Last Clock Edge of Byte 1 to the 1st Clock Edge
of Byte 2
Hold Time of SDI Data Input to SCK Edge
SDO Data Output Rise Time
SDO Data Output Fall Time
SCK Output Rise Time
(Master mode)
SCK Output Fall Time (Master mode)
SDO Data Output Valid after
SCK Edge
70
to SCK
80
71
73
MSb In
or SCK
Characteristic
MSb
74
72
PIC18F2420/2520/4420/4520
Input
75, 76
Preliminary
Continuous
Single Byte
Continuous
Single Byte
PIC18FXXXX
PIC18LFXXXX
PIC18FXXXX
PIC18LFXXXX
PIC18FXXXX
PIC18LFXXXX
bit 6 - - - - - -1
bit 6 - - - -1
78
79
1.25 T
1.25 T
1.5 T
Min
T
100
100
CY
40
40
—
—
—
—
—
—
—
—
CY
CY
LSb
CY
79
78
LSb In
+ 40
+ 30
+ 30
Max Units
100
25
45
25
25
45
25
50
—
—
—
—
—
—
—
—
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
DS39631A-page 349
(Note 1)
(Note 1)
(Note 2)
V
V
V
Conditions
DD
DD
DD
= 2.0V
= 2.0V
= 2.0V