HCS512T-I/SO(2002) View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

HCS512T-I/SO
(Rev.:2002)

KEELOQ® Code Hopping Decoder

Microchip Technology 

FIGURE 6-2: PROGRAMMING WAVEFORMS

HCS512

MCLR

TPS

CLK

(Clock)

DAT

(Data)

TPH1

TPH2

TCKL

TCKH

TACK

TACKH

Bit0 Bit1

Bit78 Bit79

Ack

Enter Program Mode

80-bit Data Package

Acknowledge

pulse

TABLE 6-4: PROGRAMMING TIMING REQUIREMENTS

Parameter

Symbol

Min.

Program mode setup time

Hold time 1

Hold time 2

Clock High Time

Clock Low Time

Acknowledge Time

Acknowledge duration

Note: FOSC equals 4 MHz.

TPS

TPH1

TPH2

TCKH

TCKL

TACK

TACKH

1

8

0.05

0.05

0.050

—

1

Max.

64

128

320

320

320

80

—

Units

ms

ms

ms

ms

ms

ms

ms

© 2002 Microchip Technology Inc.

DS40151D-page 11

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