HCS360-ISLASHP datasheet(8/28 Pages) MICROCHIP

8 / 28 page

HCS360

DS40152D-page 8

 2001 Microchip Technology Inc.

3.5.4

DELM: DELAY MODE

If DELM = 1, delay transmission is enabled. A delayed

transmission is indicated by inverting the lower nibble

of the discrimination value. The delay mode is primarily

for compatibility with previous KEELOQ devices. If

DELM = 0, delay transmission is disabled (Table 3-4).

3.5.5

TIMO: TIME-OUT

If TIMO = 1, the time-out is enabled. Time-out can be

used to terminate accidental continuous transmissions.

When time-out occurs, the PWM output is set low and

the LED is turned off. Current consumption will be

higher than in standby mode since current will flow

through the activated input resistors. This state can be

exited only after all inputs are taken low. TIMO = 0, will

enable continuous transmission (Table 3-5).

TABLE 3-4:

TYPICAL DELAY TIMES

FAST1

FAST0

Number of Code

Words before Delay

Mode

Time Before Delay Mode

(MANCH = 0)

Time Ref Delay Mode

(MANCH = 1)

≈ 2.9s

≈ 5.1s

≈ 3.1s

≈ 6.4s

≈ 1.5s

≈ 3.2s

≈ 1.7s

≈ 4.5s

TABLE 3-5:

TYPICAL TIME-OUT TIMES

FAST 1

FAST 0

Maximum Number of

Code Words

Transmitted

Time Before Time-out

(MANCH = 0)

Time Before Time-out

(MANCH = 1)

256

≈ 26.5s

≈ 46.9

512

≈ 28.2s

≈ 58.4

256

≈ 14.1s

≈ 29.2

512

≈ 15.7s

≈ 40.7

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