MCP2003AT-ESLASHP datasheet(15/34 Pages) MICROCHIP

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DS20002230F-page 15

MCP2003/4/3A/4A

2.4

AC Specifications

AC Characteristics

Electrical Characteristics:

Unless otherwise indicated, all limits are specified for

VBB = 6.0V to 27.0V; TA = -40°C to +125°C

Parameter

Sym.

Min.

Typ.

Max.

Units

Test Conditions

Bus Interface – Constant Slope Time Parameters

Slope Rising and Falling Edges

tSLOPE

3.5

—

22.5

µs

7.3V <= VBB <= 18V

Propagation Delay of

Transmitter

tTRANSPD

——

4.0

µs

tTRANSPD = max (tTRANSPDR or

tTRANSPDF)

Propagation Delay of Receiver

tRECPD

——

6.0

µs

tRECPD = max (tRECPDR or tRECPDF)

Symmetry of Propagation

Delay of Receiver Rising Edge

w.r.t. Falling Edge

tRECSYM

-2.0

—

2.0

µs

tRECSYM = max (tRECPDF – tRECPDR)

RRXD 2.4

 to VCC, CRXD 20 pF

Symmetry of Propagation

Delay of Transmitter Rising

Edge w.r.t. Falling Edge

tTRANSSYM

-2.0

—

2.0

µs

tTRANSSYM = max (tTRANSPDF -

tTRANSPDR)

Time to Sample of FAULT/TXE

for Bus Conflict Reporting

tFAULT

——

32.5

µs

tFAULT = max (tTRANSPD + tSLOPE +

tRECPD)

Duty Cycle 1 @20.0 kbit/sec

0.396

—

CBUS; RBUS conditions:

1nF; 1 k

 | 6.8 nF; 660 | 10 nF; 500

THREC(MAX) = 0.744 x VBB,

THDOM(MAX) = 0.581 x VBB,

VBB =7.0V – 18V; tBIT = 50 µs

D1 = tBUS_REC(MIN)/2 x tBIT)

Duty Cycle 2 @20.0 kbit/sec

—

0.581

—

CBUS; RBUS conditions:

1nF; 1 k

 | 6.8 nF; 660 | 10 nF; 500

THREC(MAX) = 0.284 x VBB,

THDOM(MAX) = 0.422 x VBB,

VBB =7.6V – 18V; tBIT = 50 µs

D2 = tBUS_REC(MAX)/2 x tBIT)

Duty Cycle 3 @10.4 kbit/sec

0.417

—

CBUS; RBUS conditions:

1nF; 1 k

 | 6.8 nF; 660 | 10 nF; 500

THREC(MAX) = 0.778 x VBB,

THDOM(MAX) = 0.616 x VBB,

VBB =7.0V – 18V; tBIT = 96 µs

D3 = tBUS_REC(MIN)/2 x tBIT)

Duty Cycle 4 @10.4 kbit/sec

—

0.590

—

CBUS; RBUS conditions:

1nF; 1 k

 | 6.8 nF; 660 | 10 nF; 500

THREC(max) = 0.251 x VBB,

THDOM(MAX) = 0.389 x VBB,

VBB =7.6V – 18V; tBIT = 96 µs

D4 = tBUS_REC(MAX)/2 x tBIT)

Wake-up Timing

Bus Activity Debounce time

tBDB

—

µs

MCP2003/2004

125

µs

MCP2003A/2004A

Bus Activity to VREN on

tBACTVE

—

150

µs

MCP2003/2004

µs

MCP2003A/2004A

WAKE to VREN on

tWAKE

——

150

µs

Chip Select to VREN on

tCSOR

——

150

µs

VREN floating

Chip Select to VREN off

tCSPD

—

µs

VREN floating

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