HCS201 datasheet(5/36 Pages) MICROCHIP

Part #	HCS201

Description	KEELOQ짰 Code Hopping Encoder 34-bit fixed code (28-bit serial number

Download	36 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

Logo

5 / 36 page

DS41098D-page 5

HCS201

2.0

ENCODER OPERATION

As shown in the typical application circuits (Figure 2-1),

the HCS201 is a simple device to use. It requires only

the addition of buttons and RF circuitry for use as the

transmitter in your security application. A description of

each pin is given in Table 2-1.

FIGURE 2-1:

TYPICAL CIRCUITS

TABLE 2-1:

PIN DESCRIPTIONS

The HCS201 will wake-up upon detecting a button

press and delay approximately 10 ms for button

debounce (Figure 2-2). The synchronization counter,

discrimination value and button information will be

encrypted to form the hopping code. The hopping code

portion will change every transmission, even if the

same button is pushed again. A code word that has

been transmitted will not repeat for more than 64K

transmissions. This provides more than 18 years of use

before a code is repeated; based on 10 operations per

day. Overflow information sent from the encoder can be

used to extend the number of unique transmissions to

more than 192K.

If in the transmit process it is detected that a new but-

ton(s) has been pressed, a RESET will immediately

occur and the current code word will not be completed.

Please note that buttons removed will not have any

effect on the code word unless no buttons remain

pressed; in which case the code word will be completed

and the power-down will occur.

VDD

B0

Tx out

S0

S1

S2

VDDB

STEP

VDD

DATA

VSS

Two button remote control

B1

Tx out

S0

S1

S2

STEP

VDD

DATA

VSS

Four button remote control

B3 B2 B1 B0

Note:

Up to 7 functions can be implemented by pressing

more than one button simultaneously or by using a

suitable diode array.

S0

S1

S2

STEP

VDD

DATA

VSS

VDDB

VDD

Tx out

Three button remote control with Step up regulator

VDD

2.0-6.0V

External components sample values:

R = 5.1 K

Ω

L = 390 uH

Q = 2N3904

C = 1.0 uF

D = ZHCS400CT (40V 0.4A Zetex)

(see Section 5.6 for a description of the Step Up circuit)

R

L

D

C

Q

Name

Number

Pin Description

S0

1

Switch input 0

S1

2

Switch input 1

S2

3

Switch input 2 / Clock pin for

Programming mode

VDDB

4

Battery input pin, supplies power

to the step up control circuitry

VSS

5

Ground reference connection

DATA

6

Pulse Width Modulation (PWM)

output pin / Data pin for

Programming mode

STEP

7

Step up regulator switch control

VDD

8

Positive supply voltage

Similar Part No. - HCS201

Manufacturer	Part #	Datasheet	Description
Microchip Technology	HCS201	383Kb / 28P	KEELOQ Code Hopping Encoder 2001
Microchip Technology	HCS201	395Kb / 28P	Memory Programming Specification 2004

More results

Similar Description - HCS201

Manufacturer	Part #	Datasheet	Description
Microchip Technology	HCS200	728Kb / 34P	KEELOQ짰 Code Hopping Encoder 32-bit hopping code 2011
	HCS360	421Kb / 28P	KEELOQ짰 Code Hopping Encoder 2001
	HCS320	740Kb / 38P	KEELOQ짰 Code Hopping Encoder Automatic code word completion 2011
	HCS410	481Kb / 36P	KEELOQ짰 Code Hopping Encoder and Transponder 2001
	HCS512	317Kb / 26P	KEELOQ짰 Code Hopping Decoder 2002
	HCS410	1Mb / 46P	KEELOQ짰 Code Hopping Encoder and Transponder 2-bit CRC, 2-bit queue 2011
	HCS361	814Kb / 42P	KEELOQ짰 Code Hopping Encoder incorporates high security, 2011
	HCS500	529Kb / 42P	KEELOQ짰 Code Hopping Decoder 01/27/15
	HCS360	800Kb / 40P	KEELOQ짰 Code Hopping Encoder outline and low cost, 2011
	HCS362	867Kb / 46P	KEELOQ짰 Code Hopping Encoder Non-volatile synchronization data 2011

More results

HCS201 Datasheet(PDF) 5 Page - Microchip Technology

HCS201 Datasheet(HTML) 5 Page - Microchip Technology

Similar Part No. - HCS201

Similar Description - HCS201

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

Datasheet Download

Link URL