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 26-14:

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.

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