nm95hs02 National Semiconductor Corporation, nm95hs02 Datasheet

no-image

nm95hs02

Manufacturer Part Number
nm95hs02
Description
Hisec-tm High Security Rolling Code Generator
Manufacturer
National Semiconductor Corporation
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
nm95hs02N14
Manufacturer:
NS
Quantity:
2 225
Part Number:
nm95hs02N14
Manufacturer:
NS/国半
Quantity:
20 000
C 1996 National Semiconductor Corporation
NM95HS01 NM95HS02
HiSeC
General Description
The NM95HS01 02 HiSeC Rolling Code Generator is a
small footprint monolithic CMOS device designed to pro-
vide a complete low-cost high security solution to the prob-
lem of generating encrypted signals for remote keyless en-
try (RKE) applications
The NM95HS01 02 generates a fully encoded bit stream
each time one of (up to) 4 switch inputs is activated The
patented
grammable coding combinations and features high linear
complexity and correlation immunity High security is guar-
anteed by generating a unique (rolling) code for each trans-
mission and can be further enhanced by creating custom-
ized algorithms for individual customers With this product
each key can be designed to be both unique and highly
secure
The NM95HS01 02 supports either an IR or RF signal
transmitter and can be clocked with either an RC clock
(NM95HS01) or a crystal oscillator (NM95HS02) The de-
vice operates over a voltage range of 2 2V to 6 5V and
offers a low power standby mode (
cations The product is available in both 8-pin and 14-pin SO
packages with 2 or 4 key switch inputs that can be used for
customer presets such as seat positions and vehicle oper-
ating functions such as car door locking unlocking
Functional Block Diagram
Note Signals shown are internal logic signals
HiSeC
Patents Pending
TM
and MICROWIRE
coding scheme utilizes 2
TM
TM
High Security Rolling Code Generator
are trademarks of National Semiconductor Corporation
TL D 12302
k
1 mA) for battery appli-
48
possible user-pro-
FIGURE 1
Features
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Applications
Y
Y
Y
Y
Relevant Documents
Y
Y
Y
High security coding scheme with 2
High linear complexity and correlation immunity
2 2V to 6 5V operation
Less than 1 mA standby current
Full resynchronization capability
Unique customized algorithm option
13 bytes on-chip non-volatile configuration memory
RC or XTAL clock options for to 4 1 MHz operation
Supports both IR and RF signal transmission
Selection of bit coding and transmission frame formats
Space saving narrow body SO8 or SO14 packages
Up to 4 key switch inputs on SO14 package
Remote Keyless Entry (RKE) applications
Burglar alarms garage door openers
Individualized recognition transmission systems
Personalized consumer automotive applications
MM57HS01 datasheet
Designing and Programming a Complete HiSeC
based RKE System
HiSeC Remote Keyless Entry Solution Encoder Decod-
er Chip Set User’s Manual
RRD-B30M66 Printed in U S A
48
TL D 12302 – 1
combinations
February 1996
AN-985
AN-355
TM
-

Related parts for nm95hs02

nm95hs02 Summary of contents

Page 1

... The NM95HS01 02 supports either signal transmitter and can be clocked with either an RC clock (NM95HS01 crystal oscillator (NM95HS02) The de- vice operates over a voltage range and offers a low power standby mode ( 1 mA) for battery appli- ...

Page 2

... RKE applica- tion The NM95HS01 can be clocked with an RC circuit while the NM95HS02 can be clocked with a crystal oscilla- tor General Device Operation The Functional Block Diagram (Figure 1) shows the internal ...

Page 3

... NM95HS01N NM95HS02N NM95HS01M NM95HS02M NM95HS01MT14 NM95HS02MT14 NM95HS01N14 NM95HS02N14 Order Number NM95HS01EM8 NM95HS02EM8 NM95HS01EN NM95HS02EN NM95HS01EM NM95HS02EM NM95HS01EN14 NM95HS02EN14 3 14-Pin SO Package (M14) and 14-Pin Dual-In-Line Package (N14) 14-Pin TSSOP Package (MT14 12302 – 5 Top View See NS Package Number ...

Page 4

General Transmitter Circuit Configurations Figure 3 shows several typical circuit configurations for a HiSeC based RKE system transmitter Note that all circuits require few external components beyond a battery and transmitter stage IR and RF bit timing may be optimized ...

Page 5

Bit Coding Formats The NM95HS01 02 HiSeC Generator supports eleven-bit coding formats which may be used for IR and RF transmis- sion Seven-bit formats are available for RF applications and four are available for IR applications One-bit format is reserved ...

Page 6

Bit Transmission Coding Formats RF Bit Coding Format 7 (Low Duty Cycle IR Bit Coding Format 1 (5 Pulses IR Bit Coding Format 2 (8 Pulses IR Bit Coding Format 3 (5 Pulses IR Bit Coding Format 4 (8 Pulses ...

Page 7

Programmable Signal Output Polarity The transmit (TX) output pin signal polarity and quiescent state output is controlled by the TxPol bit which may be configured in EEPR0M If TxPol 0 the TX output pin will logic ...

Page 8

Data Frame Fields (Continued) The preamble has a fixed format of two bit times at system logic high then one-bit time at system logic low then eight zeroes using the user-selected bit coding format This ar- rangement is clearly shown ...

Page 9

Data Frame Fields (Continued) KEY ID FIELD The key ID field is another user option Both its presence and the length of its field can be configured in EEPROM If FixPresent 0 no key ID field will be transmitted with ...

Page 10

Data Frame Fields (Continued) TRANSMISSION INDICATION Both the LED and RFEN signals can be used to indicate HiSeC rolling code transmission The LED output is active low during the transmission of a pause whereas the RFEN output is active low ...

Page 11

Operational Timing Issues As an example consider the following situation A designer wishes to design an RF data transmitter using RF bit coding format 5 with a bit time The designer also wishes to use a 3 ...

Page 12

... RC clocked generator (NM95HS01) and the crystal (XTAL) (NM95HS02) The component values shown in the tables have been cho- sen for low cost general availability and reliable operation Components are referenced to the circuit schematics shown in Figure 3 Though there is some flexibility in select- ...

Page 13

... Function Allows user to send a sync frame by holding a key down for Determines whether RFEN LED or CKO LED is the LED connect pin for the NM95HS02 Selects between 3V and 6V battery voltage Disables data transmission if key is depressed Sets the pause time between data frames during data transmission ...

Page 14

... Read Time Low WLR t Start Read Time CKIHSR http www national com (Note 1) Lead Temperature (Soldering 10 sec ) ESD Rating Ambient Operating Temperature 150 C NM95HS01 NM95HS02 NM95HS01E NM95HS02E Power Supply ( 13V b a Conditions (Note 2) CKI 0 MHz ...

Page 15

NM95HS01 02 DC and AC Electrical Characteristics (unless otherwise specified) (Continued Symbol Parameter t Clock Period Time CKI (Note 4) t Clock High Time CKIH (Note 4) t Clock Low Time CKIL ...

Page 16

Timing Diagrams http www national com Write Mode Read Mode 12302 – 12302 – 22 ...

Page 17

... K2 clock the CKI pin to latch the bit When all bits of the first byte have been latched in set output pin for a logic low NM95HS01 02 has written the byte to memory Repeat this sequence to program the remainder of the bytes When all 13 bytes have been programmed set K1 and ...

Page 18

... Physical Dimensions inches (millimeters) unless otherwise noted 8-Lead (0 150 Wide) Molded Small Outline Package JEDEC Order Number NM95HS01M8 or NM95HS02M8 14-Lead (0 150 Wide) Molded Small Outline Package JEDEC Order Number NM95HS01M14 or NM95HS02M14 http www national com NS Package Number M08A NS Package Number M14A ...

Page 19

... Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Order Number NM95HS01N NM95HS01EN NM95HS02N or NM95HS02EN 14-Lead (0 300 Wide) Molded Dual-In-Line Package Order Number NM95HS01N14 or NM95HS02N14 8-Lead Dual-In-Line Package NS Package Number N08E NS Package Number N14A 19 http www national com ...

Page 20

... Physical Dimensions all dimensions are in millimeters (Continued) 14-Lead Molded Thin Shrink Small Outline Package JEDEC Order Number NM95HS01MT14 NM95HS02MT14 LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL ...

Related keywords