NM95HS01 NSC [National Semiconductor], NM95HS01 Datasheet
NM95HS01
Available stocks
Related parts for NM95HS01
NM95HS01 Summary of contents
Page 1
... With this product each key can be designed to be both unique and highly secure 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 ...
Page 2
... These parameters are configured by the user in the 13-byte on-chip EEPROM ar- ray The NM95HS01 version of the device uses an RC network to clock the CKI input pin The CKO LED pin is not required for clocking but may be used for a visual indicator LED If ...
Page 3
... Top View See NS Package Number M08A (M8) or N08E (N) Ordering Information Commercial Temperature Range ( Extended Temperature Range ( Note Keys 3 and 4 available in 14-pin packages FlGURE 2 Operational Block Diagram of the NM95HS01 02 HiSeC Generator Pin Names Pin Description KEYn Key Input RFEN LED RF Enable LED ...
Page 4
... Clock LEDSEL RC XTAL XTAL Either the LED or RFEN outputs of the NM95HS01 02 can be used to indicate device transmis- sion The LED output is active during a pause whereas the RFEN output is active during frame transmission The IR Drive Current amplifier stage may be needed http ...
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 for future use Bit coding formats are selected by configuring four bits in ...
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
... These frames are transmitted through transmitter stage using the bit coding format selected The NM95HS01 02 transmits two types of data frames a normal data frame and a synchronization (sync) frame The format of each frame is similar but there are slight differenc- ...
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
... The field size is selected with the FixSize bit If FixSize the 24-bit field is selected If FixSize 0 the 20-bit field is e selected Since a full 24 bits are allowed in the Key ID regis- ter the NM95HS01 02 will transmit the most significant 20 bits if FixSize 0 The field is transmitted in the user-se- e lected bit coding format ...
Page 10
... The NM95HS01 02 timer block is shown in Figure 8 The purpose of the prescalers is to provide various timing signals to the state machines in the generator The IR clock is used as a time base for the various IR bit coding formats The RF clock is used for RF bit coding formats A program- ...
Page 11
... INITIALIZATION SYNCHRONIZATION Initialization is the process of synchronizing the gen- erator with its decoder for the first time The NM95HS01 02 uses the following procedure to initialize the device The user inserts a new battery into the HiSeC-based device which causes the LED to light The LED also has a second- ...
Page 12
... Security Aspects NORMAL OPERATION Once the NM95HS01 02 has been initialized the device will generate and transmit a new code each time a key is pressed If a key is held down the same frame (plus any pauses between frames) is transmitted repeatedly If the key is held down for longer than 80 seconds the generator ...
Page 13
... Generator Clock Design Parameters TABLE VII NM95HS01 02 EEPROM Array Configuration and Definitions Parameter Bits Address AutoResync 1 Byte 0 bit 7 LEDSEL 1 Byte 0 bit 6 BatteryType 1 Byte 0 bit 5 TIMEOUTEN 1 Byte 0 bit 4 Pause Length 2 Byte 0 bits 3–2 (Pause0 Pause1) FactoryDisableBit 1 Byte 0 bit 1 WriteDisableBit 1 Byte 0 bit 0 PreamblePresent ...
Page 14
... If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Ambient Storage Temperature Input or Output Voltages with Respect to Ground All except NM95HS01 02 DC and AC Electrical Characteristics (unless otherwise specified Symbol ...
Page 15
... Note 3 The clock rate used to program the NM95HS01 02 is generally less than the normal operating mode clock rate and should be temporarily reduced as necessary to meet the programming specifications shown here For example a generator might normally operate at 4 MHz but should be programmed at ...
Page 16
Timing Diagrams http www national com Write Mode Read Mode 12302 – 12302 – 22 ...
Page 17
... America 408-263-6667 800-967-4776 Device Programmer Taiwan 886-2-917-3015 BBS 408-262-6438 Hi-Lo ALL-07 Asia 886-2764-0215 America 510-623-3850 Evalutation kit support for NM95HS01 02 A demonstration kit for the HiSeC High Security Rolling Code Generator is available National Semiconductor NM95HSEV HiSeC Evaluation Board NM95HSPRO HiSeC Single Site Programmer ...
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 ...