HCS360 datasheet(10/40 Pages) MICROCHIP

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HCS360

DS40152F-page 10

3.5.10

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 and is

not recommended for new designs.

If DELM = 0, delay transmission is disabled (Table 3-

6).

TABLE 3-6:

TYPICAL DELAY TIMES

3.5.11

TIMO: TIME-OUT

OR AUTO-SHUTOFF

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 3-7).

TABLE 3-7:

TYPICAL TIME-OUT TIMES

BSEL 1

BSEL 0

Number of Code

Words before Delay

Mode

Time Before Delay Mode

(MOD = 0)

Time Before Delay Mode

(MOD = 1)

≈ 2.9s

≈ 5.1s

≈ 3.1s

≈ 6.4s

≈ 1.5s

≈ 3.2s

≈ 1.7s

≈ 4.5s

BSEL 1

BSEL 0

Maximum Number of

Code Words

Transmitted

Time Before Time-out

(MOD = 0)

Time Before Time-out

(MOD = 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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