MCP2558FD datasheet(15/36 Pages) MICROCHIP

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 2016 Microchip Technology Inc.

DS20005533A-page 15

MCP2557FD/8FD

Propagation Delay TXD to

RXD

Worst Case of tLOOP(R)

and tLOOP(F) Figure 2-9

tTXD - RXD

—90

120

—

115

150

RL = 150

,

CL = 200 pF(Note 1)

Propagation Delay,

Rising Edge

tLOOP(R)

—

120

Propagation Delay,

Falling Edge

tLOOP(F)

—

120

Recessive Bit Time on

RXD – 1 Mbps,

Loop Delay Symmetry

(Note 2)

tBIT(RXD), 1M

900

985

1100

tBIT(TXD) = 1000 ns

(Figure 2-9)

800

960

1255

tBIT(TXD) = 1000 ns

(Figure 2-9), RL = 150

,

CL = 200 pF (Note 1)

Recessive Bit Time on

RXD – 2 Mbps,

Loop Delay Symmetry

tBIT(RXD), 2M

450

490

550

tBIT(TXD)= 500 ns

(Figure 2-9)

400

460

550

tBIT(TXD)= 500 ns

(Figure 2-9), RL = 150

,

CL = 200 pF

(Note 1)

Recessive Bit Time on

RXD – 5 Mbps,

Loop Delay Symmetry

tBIT(RXD), 5M

160

190

220

tBIT(TXD)= 200 ns

(Figure 2-9)

Recessive Bit Time on

RXD – 8 Mbps,

Loop Delay Symmetry

(Note 2)

tBIT(RXD), 8M

100

135

tBIT(TXD)= 120 ns

(Figure 2-9) (Note 1)

Delay Silent to Normal

Mode

tWAKE

—

µs

Negative edge on S

Permanent Dominant

Detect Time

tPDT

0.8

1.9

TXD =0V

Permanent Dominant

Timer Reset

tPDTR

—

The shortest recessive

pulse on TXD or CAN bus

to reset Permanent

Dominant Timer

13a

Transmitted Bit Time on

Bus – 1 Mbps (Note 2)

tBIT(BUS), 1M

870

1000

1060

tBIT(TXD) = 1000 ns

(Figure 2-9)

870

1000

1060

tBIT(TXD) = 1000 ns

(Figure 2-9),

RL = 150

, CL =200 pF

(Note 1)

13b

Transmitted Bit Time on

Bus – 2 Mbp

tBIT(BUS), 2M

435

515

530

tBIT(TXD)= 500 ns

(Figure 2-9)

435

480

550

tBIT(TXD)= 500 ns

(Figure 2-9) RL = 150

,

CL = 200 pF (Note 1)

TABLE 2-2:

AC CHARACTERISTICS (CONTINUED)

AC Characteristics

Electrical Characteristics: Unless otherwise indicated, TAMB = -40°C to

+150°C; VDD = 4.5V to 5.5V, VIO = 1.7V to 5.5V (Note 2), RL = 60

CL = 100 pF.

Maximum VDIFF(D)(I)= 3V.

Param.

No.

Parameter

Sym.

Min.

Typ.

Max.

Units

Conditions

Note 1: Characterized, not 100% tested.

2: Not in ISO/DIS-11898-2:2015, but needs to be characterized.

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