HCS515 查看數據表（PDF） - Microchip Technology

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HCS515

KEELOQ Code Hopping Decoder

Microchip Technology 

HCS515

8.1.8 LEARN STATUS STRING

Standard Operating Conditions (unless otherwise specified):

Commercial (C): 0°C ≤ TA ≤ +70°C

Industrial (I):

-40°C ≤ TA ≤ +85°C

Symbol

Parameters

Min

Typ

Max

Units

TDHI Command request time

—

—

500

ms

TCLA

Microcontroller command

request time

0.005

—

500

ms

TACT Decoder request acknowledge time

—

—

10

µs

TCLH Clock high hold time

1.2

ms

TCLL Clock low hold time

0.020

—

1.2

ms

TCLKH Clock high time

20

—

1000

µs

TCLKL Clock low time

20

—

1000

µs

FCLK Clock frequency

500

—

25000

Hz

TDS Data hold time

—

—

5

µs

Note: These parameters are characterized but not tested.

8.1.9 PROGRAMMING COMMAND

Standard Operating Conditions (unless otherwise specified):

Commercial (C): 0°C ≤ TA ≤ +70°C

Industrial (I):

-40°C ≤ TA ≤ +85°C

Symbol

Parameters

Min

Typ

Max

Units

TPP1 Command request time

—

TPP2 Decoder acknowledge time

—

TPP3

Start command mode to first

command bit

20

TPP4 Data line low before tri-stated

—

TCLKH Clock high time

20

TCLKL Clock low time

20

FCLK Clock frequency

500

TDS Data hold time

—

TCMD Command validate time

—

TACK Command acknowledge time

30

TWT2 Acknowledge respond time

20

TALW Data low after clock low

—

Note: These parameters are characterized but not tested.

—

500

ms

—

1

ms

—

1000

µs

—

5

µs

—

1000

µs

—

1000

µs

—

25000

Hz

—

5

µs

—

10

µs

—

240

ms

—

1000

µs

—

10

µs

DS40183A-page 22

Preliminary

© 1998 Microchip Technology Inc.

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