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PDF HCS101 Data sheet ( Hoja de datos )
| Número de pieza | HCS101 | |
| Descripción | Fixed Code Encoder | |
| Fabricantes | Microchip | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de HCS101 (archivo pdf) en la parte inferior de esta página. Total 20 Páginas | ||
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HCS101
Fixed Code Encoder
FEATURES
Operating
• 2 Programmable 32-bit serial numbers
• 10-bit serial number
• 66-bit transmission code length
• Non-volatile 16-bit counter
• 3.5V -13.3V operation
• 3 inputs, 7 functions available
• Selectable baud rate
• Automatic code word completion
• Battery low signal transmitted to receiver
Other
• Pin-out compatible with most KEELOQ® Encoders
• Simple programming interface
• On-chip EEPROM
• On-chip oscillator and timing components
• Button inputs have internal pull-down resistors
• Minimum External Components required
Typical Applications
The HCS101 is ideal for remote control applications.
These applications include:
• Low-end automotive alarm systems
• Low-end automotive immobilizers
• Gate and garage door openers
• Identity tokens
• Low-end burglar alarm systems
• Fan and lighting controls
• Toys
DESCRIPTION
The HCS101 from Microchip Technology Inc. is a fixed
code encoder designed for remote control systems. It
provides a small package outline and low cost to make
this device a perfect solution for unidirectional remote
control systems.
It is also pin compatible with Microchip’s HCS201 Code
Hopping Encoder allowing easy upgrading to a more
secure remote keyless entry (RKE) system.
The 8-pin HCS101 operates over a wide voltage range
of 3.5V to 13.3V and has three button inputs allowing
the system designer the freedom to utilize up to 7 func-
tions. The only components required for device opera-
tion are the buttons and RF circuitry, allowing a very low
system cost.
PACKAGE TYPES
PDIP, SOIC
S0 1
8 VDD
S1 2
7 NC
S2 3
NC 4
6 DATA
5 VSS
HCS101 BLOCK DIAGRAM
Oscillator
RESET Circuit
Controller
Power
latching
and
switching
DATA
VSS
VDD
EEPROM
Transmit register
Button input port
S2 S1 S0
1999-2013 Microchip Technology Inc.
Preliminary
DS41115D-page 1
1 page  
4.0 EEPROM MEMORY
ORGANIZATION
The HCS101 contains 192 bits (12 x 16-bit words) of
EEPROM memory as shown in Table 4-1. Further
descriptions of the memory array are given in the fol-
lowing sections.
TABLE 4-1: EEPROM MEMORY MAP
WORD
ADDRESS
MNEMONIC
DESCRIPTION
0 RESERVED
Set to 0000H
1 RESERVED
Set to 0000H
2 RESERVED
Set to 0000H
3 RESERVED
Set to 0000H
4 CNTR
Counter
5 RESERVED
Set to 0000H
6 SER_1 Device Serial Number 1
(word 0) 16 LSb’s
7 SER_1 Device Serial Number 1
(word 1) 16 MSb’s
8 SER_2 Device Serial Number 2
(word 0) 16 LSb’s
9 SER_2 Device Serial Number 2
(word 1) 16 MSb’s
10 SER_3 Device Serial Number 3
11 CONFIG
Config Word
4.1 CNTR (Counter)
This is the 16-bit gray code counter value that can be
used to track the number of times a transmitter has
been activated.
4.2 SER_1, SER_2, SER_3 (Encoder
Serial Number)
SER_1, and SER_2 are the 32-bit device serial num-
bers. SER_3 is an additional 10-bit serial number trans-
mitted with every transmission. The most significant 6
bits of the 16-bit SER_3 word are reserved and should
be set to zero.
4.3 Configuration Word
The configuration word is a 16-bit word stored in the
EEPROM array that is used by the device to store the
status configuration options. Further explanations of
each of the bits are described in the following sections.
HCS101
TABLE 4-2: CONFIGURATION WORD
Bit Number
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Bit Name
OSC0
OSC1
OSC2
OSC3
VLOWS
BRS
MTX4
TXEN
S3SET
XSER
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
4.3.1
OSCILLATOR TUNING BITS
(OSC0 TO OSC3)
These bits are used to tune the nominal frequency of
the HCS101 to within ±10% of its nominal value over
temperature and voltage.
4.3.2
LOW VOLTAGE TRIP POINT
SELECT (VLOWS)
The low voltage trip point select bit (VLOWS) and the S3
setting bit (S3SET) are used to determine the voltage
level for the low voltage detector.
VLOWS
S3SET*
00
01
10
11
* See also Section 4.3.6
Trip Point
4.4
4.4
9
6.75
4.3.3 BAUDRATE SELECT BITS (BRS)
BRS selects the speed of transmission and the code
word blanking. Table 4-3 shows how the bit is used to
select the different baud rates and Section 5.2 provides
a detailed explanation of code word blanking.
TABLE 4-3: BAUDRATE SELECT
BRS
0
1
Basic Pulse
Element
400µs
200µs
Code Words
Transmitted
All
1 out of 2
1999-2013 Microchip Technology Inc.
Preliminary
DS41115D-page 5
5 Page 
HCS101
TABLE 7-3: CODE WORD TRANSMISSION TIMING REQUIREMENTS
VDD = +3.5 to 13.3V
Commercial (C):TAMB = 0C to +70C
Industrial (I):TAMB = -40C to +85C
Code Words Transmitted
All 1 out of 2
Symbol
Characteristic
Number of TE Min. Typ. Max. Min.
TE
TBP
TP
TH
THOP
TFIX
TG
Note:
Basic pulse element
1 360 400 440 180
PWM bit pulse width
3 —3——
Preamble duration
24 8.64 9.6 10.56 4.32
Header duration
10 3.6 4.0 4.4 1.8
Hopping code duration
96 34.56 38.4 42.24 17.28
Fixed code duration
102 36.72 40.8 44.88 18.36
Guard Time
39 14.04 15.6 17.16 7.02
Total Transmit Time
271 97.56 108.4 119.24 48.78
PWM data rate
925 833 757 1851
The timing parameters are not tested but derived from the oscillator clock.
Typ.
200
3
4.8
2.0
19.2
20.4
7.8
54.2
1667
Max.
220
—
5.28
2.2
21.12
22.44
8.58
59.62
1515
Units
µs
ms
ms
ms
ms
ms
ms
ms
bps
1999-2013 Microchip Technology Inc.
Preliminary
DS41115D-page 11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet HCS101.PDF ] | |
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