PIC18F23K20-ESLASHP datasheet(392/456 Pages) MICROCHIP

392 / 456 page

PIC18F2XK20/4XK20

DS41303G-page 392

 2010 Microchip Technology Inc.

FIGURE 26-12:

EXAMPLE SPI MASTER MODE TIMING (CKE = 0)

TABLE 26-14: EXAMPLE SPI MODE REQUIREMENTS (MASTER MODE, CKE = 0)

SCK

(CKP = 0)

SCK

(CKP = 1)

SDO

SDI

75, 76

MSb

LSb

bit 6 - - - - - -1

MSb In

LSb In

bit 6 - - - -1

Note:

Refer to Figure 26-4 for load conditions.

Param

No.

Symbol

Characteristic

Min

Max Units

Conditions

TssL2scH,

TssL2scL

 to SCK  or SCK  Input

TCY

—ns

TscH

SCK Input High Time

(Slave mode)

Continuous

1.25 TCY + 30

—

71A

Single Byte

—

(Note 1)

TscL

SCK Input Low Time

(Slave mode)

Continuous

1.25 TCY + 30

—

72A

Single Byte

—

(Note 1)

TdiV2scH,

TdiV2scL

Setup Time of SDI Data Input to SCK Edge

100

—

73A

Tb2b

Last Clock Edge of Byte 1 to the 1st Clock Edge

of Byte 2

1.5 TCY + 40

—

(Note 2)

TscH2diL,

TscL2diL

Hold Time of SDI Data Input to SCK Edge

100

—

TdoR

SDO Data Output Rise Time

—

TdoF

SDO Data Output Fall Time

—

TscR

SCK Output Rise Time

(Master mode)

—25

TscF

SCK Output Fall Time (Master mode)

—

TscH2doV,

TscL2doV

SDO Data Output Valid after SCK Edge

—

Note 1:

Requires the use of Parameter #73A.

Only if Parameter #71A and #72A are used.

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