PIC18LF2431-I/ML View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18LF2431-I/ML

28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High-Performance PWM and A/D

Microchip Technology 

PIC18F2331/2431/4331/4431

FIGURE 26-13: EXAMPLE SPI SLAVE MODE TIMING (CKE = 0)

SS

70

SCK

(CKP = 0)

83

71

72

SCK

(CKP = 1)

SDO

SDI

80

MSb

bit 6 - - - - - -1

MSb In

74

73

75, 76

bit 6 - - - -1

LSb

77

LSb In

TABLE 26-13: EXAMPLE SPI MODE REQUIREMENTS (SLAVE MODE, CKE = 0)

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

—

73

TdiV2scH, Setup Time of SDI Data Input to SCK Edge

TdiV2scL

20

—

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 Edge PIC18FXX31

—

50

TscL2doV

PIC18LFXX31

—

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

ns (Note 2)

ns

ns

ns

ns

ns

ns

ns

ns

 2010 Microchip Technology Inc.

DS39616D-page 355

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