HCS360

© 1996 Microchip Technology Inc.

Preliminary

DS40152C-page 19

TABLE 8-4

CODE WORD TRANSMISSION TIMING PARAMETERS—PWM MODE

Commercial (C):Tamb = 0

°C to +70°C

Industrial (I):Tamb = -40

°C to +85°C

Code Words Transmitted

FAST1 = 0,

FAST0 = 0

FAST1 = 0,

FAST0 = 1

Symbol

Characteristic

Number

Min.

Typ.

Max.

Number

Min.

Typ.

Max.

Units

Basic pulse element

1

260

400

620

1

130

200

310

µs

PWM bit pulse width

3

780

1200

1860

3

390

600

930

µs

Preamble duration

32

8.3

12.8

19.8

32

4.2

6.4

9.9

ms

Header duration

10

2.6

4.0

6.2

10

1.3

2.0

3.1

ms

Hopping code duration

96

25.0

38.4

59.5

96

12.5

19.2

29.8

ms

Fixed code duration

105

27.3

42.0

65.1

105

13.7

21.0

32.6

ms

Guard Time (LNGRD = 0)

16

4.2

6.4

9.9

32

4.2

6.4

9.9

ms

—

Total transmit time

259

67.3

103.6 160.6

275

35.8

55.0

85.3

ms

—

PWM data rate

—

1282

833

538

—

2564

1667

1075

bps

Note:

The timing parameters are not tested but derived from the oscillator clock.

Commercial (C):Tamb = 0

°C to +70°C

Industrial (I):Tamb = -40

°C to +85°C

Code Words Transmitted

FAST1 = 1,

FAST0 = 0

FAST1 = 1,

FAST0 = 1

Symbol

Characteristic

Number

Min.

Typ.

Max.

Number

of Te

Min.

Typ.

Max.

Units

Basic pulse element

1

130

200

310

1

65

100

155

µs

PWM bit pulse width

3

390

600

930

3

195

300

465

µs

Preamble duration

32

4.2

6.4

9.9

32

2.1

3.2

5.0

ms

Header duration

10

1.3

2.0

3.1

10

0.7

1.0

1.6

ms

Hopping code duration

96

12.5

19.2

29.8

96

6.2

9.6

14.9

ms

Fixed code duration

105

13.7

21.0

32.6

105

6.8

10.5

16.3

ms

Guard Time (LNGRD = 0)

32

4.2

6.4

9.9

64

4.2

6.4

9.9

ms

—

Total transmit time

275

35.8

55.0

85.3

307

20.0

30.7

47.6

ms

—

PWM data rate

—

2564

1667

1075

—

5128

3333

2151

bps

Note:

The timing parameters are not tested but derived from the oscillator clock.