HCS512T-P View Datasheet(PDF) - Microchip Technology

Part Name

Description

MFG CO.

HCS512T-P

KEELOQ® Code Hopping Decoder

Microchip Technology 

HCS512

FIGURE 6-2: PROGRAMMING WAVEFORMS

MCLR

TPS

CLK

(Clock)

DAT

(Data)

TPH1

TPH2

TCKL

TCKH

TACK

Bit0 Bit1

Bit78 Bit79

Ack

Enter Program Mode

80-bit Data Package

Acknowledge

pulse

TABLE 6-4: PROGRAMMING TIMING

REQUIREMENTS

Parameter

Symbol

Program mode setup time

Hold time 1

Hold time 2

Clock High Time

Clock Low Time

Acknowledge Time

Note: FOSC equals 4 MHz.

TPS

TPH1

TPH2

TCKH

TCKL

TACK

Min.

1

8

0.05

0.05

0.050

—

Max.

64

128

320

320

320

80

Units

ms

ms

ms

ms

ms

ms

DS40151C-page 10

© 1997 Microchip Technology Inc.

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