Microchip HCS200T-/P Keeloq code hopping encoder Datasheet

HCS200
KEELOQ® Code Hopping Encoder
FEATURES
DESCRIPTION
Security
The HCS200 from Microchip Technology Inc. is a code
hopping encoder designed primarily for Remote Keyless Entry (RKE) systems. The device utilizes the
KEELOQ® code hopping technology, incorporating high
security, a small package outline and low cost. The
HCS200 is a perfect replacement of fixed code devices
in unidirectional remote keyless entry systems and
access control systems.
•
•
•
•
•
•
Programmable 28-bit serial number
Programmable 64-bit crypt key
Each transmission is unique
66-bit transmission code length
32-bit hopping code
28-bit serial number, 4-bit button status,
low battery indicator transmitted
• Crypt keys are read protected
Operating
3.5–13.0V operation
Three button inputs - seven functions available
Selectable baud rate
Automatic code word completion
Low battery signal transmitted to receiver
Non-volatile synchronization data
Other
•
•
•
•
•
PDIP, SOIC
S0
1
S1
2
S2
3
NC
4
Fixed code replacement
Automotive RKE systems
Automotive alarm systems
Automotive immobilizers
Gate and garage door openers
Identity tokens
Burglar alarm systems
© 2011 Microchip Technology Inc.
VDD
7
NC
6
PWM
5
VSS
Oscillator
EEPROM
PWM
Power
latching
and
switching
Controller
RESET circuit
Typical Applications
•
•
•
•
•
•
•
8
BLOCK DIAGRAM
Easy to use programming interface
On-chip EEPROM
On-chip oscillator and timing components
Button inputs have internal pull-down resistors
Low external component cost
The HCS200 is ideal for Remote Keyless Entry (RKE)
applications. These applications include:
HCS200
•
•
•
•
•
•
PACKAGE TYPES
Encoder
32-bit shift register
Vss
Button input port
VDD
S2 S1 S0
The HCS200 operates over a wide voltage range of
3.5 volts to 13.0 volts and has three button inputs in an
8-pin configuration. This allows the system designer
the freedom to implement up to seven functions. The
only components required for device operation are the
buttons and RF circuitry, allowing a very low
system cost.
DS40138D-page 1
HCS200
The HCS200 combines a 32-bit hopping code,
generated by a non-linear encryption algorithm, with a
28-bit serial number and 6 information bits to create a
66-bit code word. The code word length eliminates the
threat of code scanning and the code hopping mechanism makes each transmission unique, thus rendering
code capture and resend schemes useless.
The crypt key, serial number and configuration data are
stored in an EEPROM array which is not accessible via
any external connection. The EEPROM data is programmable but read-protected. The data can be verified only after an automatic erase and programming
operation. This protects against attempts to gain
access to keys or manipulate synchronization values.
The HCS200 provides an easy to use serial interface
for programming the necessary keys, system parameters and configuration data.
1.0
SYSTEM OVERVIEW
Key Terms
The following is a list of key terms used throughout this
data sheet. For additional information on KEELOQ and
Code Hopping, refer to Technical Brief 3 (TB003).
• RKE - Remote Keyless Entry
• Button Status - Indicates what button input(s)
activated the transmission. Encompasses the 4
button status bits S3, S2, S1 and S0 (Figure 4-2).
• Code Hopping - A method by which a code,
viewed externally to the system, appears to
change unpredictably each time it is transmitted.
• Code word - A block of data that is repeatedly
transmitted upon button activation (Figure 4-1).
• Transmission - A data stream consisting of
repeating code words (Figure 9-2).
• Crypt key - A unique and secret 64-bit number
used to encrypt and decrypt data. In a symmetrical block cipher such as the KEELOQ algorithm,
the encryption and decryption keys are equal and
will therefore be referred to generally as the crypt
key.
• Encoder - A device that generates and encodes
data.
• Encryption Algorithm - A recipe whereby data is
scrambled using a crypt key. The data can only be
interpreted by the respective decryption algorithm
using the same crypt key.
• Decoder - A device that decodes data received
from an encoder.
• Decryption algorithm - A recipe whereby data
scrambled by an encryption algorithm can be
unscrambled using the same crypt key.
DS40138D-page 2
• Learn – Learning involves the receiver calculating
the transmitter’s appropriate crypt key, decrypting
the received hopping code and storing the serial
number, synchronization counter value and crypt
key in EEPROM. The KEELOQ product family facilitates several learning strategies to be implemented on the decoder. The following are
examples of what can be done.
- Simple Learning
The receiver uses a fixed crypt key, common
to all components of all systems by the same
manufacturer, to decrypt the received code
word’s encrypted portion.
- Normal Learning
The receiver uses information transmitted
during normal operation to derive the crypt
key and decrypt the received code word’s
encrypted portion.
- Secure Learn
The transmitter is activated through a special
button combination to transmit a stored 60-bit
seed value used to generate the transmitter’s
crypt key. The receiver uses this seed value
to derive the same crypt key and decrypt the
received code word’s encrypted portion.
• Manufacturer’s code – A unique and secret 64bit number used to generate unique encoder crypt
keys. Each encoder is programmed with a crypt
key that is a function of the manufacturer’s code.
Each decoder is programmed with the manufacturer code itself.
The HCS200 code hopping encoder is designed specifically for keyless entry systems; primarily vehicles and
home garage door openers. The encoder portion of a
keyless entry system is integrated into a transmitter,
carried by the user and operated to gain access to a
vehicle or restricted area. The HCS200 is meant to be
a cost-effective yet secure solution to such systems,
requiring very few external components (Figure 2-1).
Most low-end keyless entry transmitters are given a
fixed identification code that is transmitted every time a
button is pushed. The number of unique identification
codes in a low-end system is usually a relatively small
number. These shortcomings provide an opportunity
for a sophisticated thief to create a device that ‘grabs’
a transmission and retransmits it later, or a device that
quickly ‘scans’ all possible identification codes until the
correct one is found.
The HCS200, on the other hand, employs the KEELOQ
code hopping technology coupled with a transmission
length of 66 bits to virtually eliminate the use of code
‘grabbing’ or code ‘scanning’. The high security level of
the HCS200 is based on the patented KEELOQ technology. A block cipher based on a block length of 32 bits
and a key length of 64 bits is used. The algorithm
obscures the information in such a way that even if the
transmission information (before coding) differs by only
one bit from that of the previous transmission, the next
© 2011 Microchip Technology Inc.
HCS200
coded transmission will be completely different. Statistically, if only one bit in the 32-bit string of information
changes, greater than 50 percent of the coded transmission bits will change.
As indicated in the block diagram on page one, the
HCS200 has a small EEPROM array which must be
loaded with several parameters before use; most often
programmed by the manufacturer at the time of production. The most important of these are:
The crypt key generation typically inputs the transmitter
serial number and 64-bit manufacturer’s code into the
key generation algorithm (Figure 1-1). The manufacturer’s code is chosen by the system manufacturer and
must be carefully controlled as it is a pivotal part of the
overall system security.
• A 28-bit serial number, typically unique for every
encoder
• A crypt key
• An initial 16-bit synchronization value
• A 16-bit configuration value
FIGURE 1-1:
CREATION AND STORAGE OF CRYPT KEY DURING PRODUCTION
Production
Programmer
HCS200
Transmitter
Serial Number
EEPROM Array
Serial Number
Crypt Key
Sync Counter
Manufacturer’s
Code
Key
Generation
Algorithm
The 16-bit synchronization counter is the basis behind
the transmitted code word changing for each transmission; it increments each time a button is pressed. Due
to the code hopping algorithm’s complexity, each increment of the synchronization value results in greater
than 50% of the bits changing in the transmitted code
word.
Figure 1-2 shows how the key values in EEPROM are
used in the encoder. Once the encoder detects a button
press, it reads the button inputs and updates the synchronization counter. The synchronization counter and
crypt key are input to the encryption algorithm and the
output is 32 bits of encrypted information. This data will
change with every button press, its value appearing
externally to ‘randomly hop around’, hence it is referred
to as the hopping portion of the code word. The 32-bit
hopping code is combined with the button information
and serial number to form the code word transmitted to
the receiver. The code word format is explained in
greater detail in Section 4.0.
Crypt
Key
.
.
.
A transmitter must first be ‘learned’ by the receiver
before its use is allowed in the system. Learning
includes calculating the transmitter’s appropriate crypt
key, decrypting the received hopping code and storing
the serial number, synchronization counter value and
crypt key in EEPROM.
In normal operation, each received message of valid
format is evaluated. The serial number is used to determine if it is from a learned transmitter. If from a learned
transmitter, the message is decrypted and the synchronization counter is verified. Finally, the button status is
checked to see what operation is requested. Figure 1-3
shows the relationship between some of the values
stored by the receiver and the values received from
the transmitter.
A receiver may use any type of controller as a decoder,
but it is typically a microcontroller with compatible firmware that allows the decoder to operate in conjunction
with an HCS200 based transmitter. Section 7.0
provides detail on integrating the HCS200 into a system.
© 2011 Microchip Technology Inc.
DS40138D-page 3
HCS200
FIGURE 1-2:
BUILDING THE TRANSMITTED CODE WORD (ENCODER)
EEPROM Array
KEELOQ®
Encryption
Algorithm
Crypt Key
Sync Counter
Serial Number
Button Press
Information
Serial Number
32 Bits
Encrypted Data
Transmitted Information
FIGURE 1-3:
BASIC OPERATION OF RECEIVER (DECODER)
1 Received Information
EEPROM Array
Button Press
Information
Serial Number
2
32 Bits of
Encrypted Data
Manufacturer Code
Check for
Match
Serial Number
Sync Counter
Crypt Key
3
KEELOQ®
Decryption
Algorithm
Decrypted
Synchronization
Counter
4
Check for
Match
Perform Function
5 Indicated by
button press
NOTE: Circled numbers indicate the order of execution.
DS40138D-page 4
© 2011 Microchip Technology Inc.
HCS200
2.0
ENCODER OPERATION
As shown in Figure 2-1, the HCS200 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 described in
Table 2-1.
Note:
When VDD > 9.0V and driving low capacitive loads, a resistor with a minimum value
of 50Ω should be used in line with VDD.
This prevents clamping of PWM at 9.0V in
the event of PWM overshoot.
FIGURE 2-1:
TYPICAL CIRCUITS
+12V
R (Note2)
B0
S0
B1
S1
NC
S2
PWM
NC
Vss
VDD
Tx out
The HCS200 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 button(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.
FIGURE 2-2:
ENCODER OPERATION
Power-Up
(A button has been pressed)
2 button remote control
RESET and Debounce Delay
(10 ms)
+12V
R (Note 2)
B3 B2 B1 B0
Sample Inputs
S0
Update Sync Info
VDD
S1
NC
S2
PWM
NC
Vss
Encrypt With
Crypt Key
Tx out
Load Transmit Register
4 button remote control (Note1)
Note
1: Up to 7 functions can be implemented by pressing
more than one button simultaneously or by using a
suitable diode array.
Transmit
2: Resistor (R) is recommended for current limiting.
Yes
TABLE 2-1:
Name
Pin
Number
S0
1
PIN DESCRIPTIONS
Buttons
Added
?
No
Description
Switch input 0
S1
2
Switch input 1
S2
3
Switch input 2/Clock pin when in
Programming mode
VSS
5
Ground reference
PWM
6
Pulse Width Modulation (PWM)
output pin/Data pin for Programming mode
VDD
8
Positive supply voltage
© 2011 Microchip Technology Inc.
No
All
Buttons
Released
?
Yes
Complete Code
Word Transmission
Stop
DS40138D-page 5
HCS200
3.0
EEPROM MEMORY
ORGANIZATION
3.4
SER_0, SER_1
(Encoder Serial Number)
The HCS200 contains 192 bits (12 x 16-bit words) of
EEPROM memory (Table 3-1). This EEPROM array is
used to store the crypt key information, synchronization
value, etc. Further descriptions of the memory array is
given in the following sections.
SER_0 and SER_1 are the lower and upper words of
the device serial number, respectively. Although there
are 32 bits allocated for the serial number, only the
lower order 28 bits are transmitted. The serial number
is meant to be unique for every transmitter.
TABLE 3-1:
3.5
WORD
ADDRESS
3.1
EEPROM MEMORY MAP
MNEMONIC
0
KEY_0
1
KEY_1
2
KEY_2
3
KEY_3
4
SYNC
5
6
Reserved
SER_0
7
SER_1
8
9
10
11
SEED_0
SEED_1
Reserved
CONFIG
DESCRIPTION
64-bit crypt key
(word 0) LSb’s
64-bit crypt key
(word 1)
64-bit crypt key
(word 2)
64-bit crypt key
(word 3) MSb’s
16-bit synchronization
value
Set to 0000H
Device Serial Number
(word 0) LSb’s
Device Serial Number
(word 1) MSb’s
Seed Value (word 0)
Seed Value (word 1)
Set to 0000H
Configuration Word
3.2
SYNC (Synchronization Counter)
This is the 16-bit synchronization value that is used to
create the hopping code for transmission. This value
will increment after every transmission.
3.3
The 2-word (32-bit) seed code will be transmitted when
all three buttons are pressed at the same time (see
Figure 4-2). This allows the system designer to implement the secure learn feature or use this fixed code
word as part of a different key generation/tracking process.
3.6
Reserved
Must be initialized to 0000H.
DS40138D-page 6
Configuration Word
The 16-bit Configuration Word stored in the EEPROM
array contains information required to form the
encrypted portion of the transmission, as well as the
device option configurations. The following sections
further explain these bits.
TABLE 3-2:
Bit Number
0
1
2
3
4
5
6
7
8
9
10
11
12
Key_0 - Key_3 (64-Bit Crypt Key)
The 64-bit crypt key is used to create the encrypted
message transmitted to the receiver. This key is calculated and programmed during production using a key
generation algorithm. The key generation algorithm
may be different from the KEELOQ algorithm. Inputs to
the key generation algorithm are typically the transmitter’s serial number and the 64-bit manufacturer’s code.
While the key generation algorithm supplied from
Microchip is the typical method used, a user may elect
to create their own method of key generation. This may
be done providing that the decoder is programmed with
the same means of creating the key for
decryption purposes.
SEED_0, SEED_1 (Seed Word)
13
14
15
3.6.1
CONFIGURATION WORD
Bit Description
Discrimination Bit 0
Discrimination Bit 1
Discrimination Bit 2
Discrimination Bit 3
Discrimination Bit 4
Discrimination Bit 5
Discrimination Bit 6
Discrimination Bit 7
Discrimination Bit 8
Discrimination Bit 9
Discrimination Bit 10
Discrimination Bit 11
Low Voltage Trip Point Select (VLOW
SEL)
Baudrate Select Bit 0 (BSL0)
Reserved, set to 0
Reserved, set to 0
DISCRIMINATION VALUE
(DISC0 TO DISC11)
The discrimination value aids the post-decryption
check on the decoder end. It may be any value, but in
a typical system it will be programmed as the 12 Least
Significant bits of the serial number. Values other than
this must be separately stored by the receiver when a
transmitter is learned. The discrimination bits are part
of the information that form the encrypted portion of
the transmission (Figure 4-2). After the receiver has
decrypted a transmission, the discrimination bits are
© 2011 Microchip Technology Inc.
HCS200
checked against the receiver’s stored value to verify
that the decryption process was valid. If the discrimination value was programmed as the 12 LSb’s of the
serial number then it may merely be compared to the
respective bits of the received serial number; saving
EEPROM space.
3.6.2
BAUD RATE SELECT BIT (BSL0)
BSL0 selects the speed of transmission and the code
word blanking. Table 3-3 shows how the bit is used to
select the different baud rates and Section 5.2 provides
detailed explanation in code word blanking.
TABLE 3-3:
BAUD RATE SELECT
BSL0
Basic Pulse
Element
Code Words
Transmitted
0
400 μs
All
1
200 μs
1 out of 2
3.6.3
LOW VOLTAGE TRIP POINT
SELECT (VLOW SEL)
The low voltage trip point select bit tells the HCS200
what VDD level is being used. This information will be
used by the device to determine when to send the voltage low signal to the receiver. When this bit is set to a
one, the VDD level is assumed to be operating from a
9.0 volt or 12.0 volt VDD level. If the bit is set to zero,
the VDD level is assumed to be 6.0 volts. Refer to
Figure 3-1 for voltage trip point.
FIGURE 3-1:
VOLTAGE TRIP POINTS
BY CHARACTERIZATION
Volts (V)
VLOW
5.5
VLOW SEL = 0
5.0
Max
4.5
4.0
3.5
3.0
Min
2.5
9.0
4.0
TRANSMITTED WORD
4.1
Code Word Format
The HCS200 code word is made up of several parts
(Figure 4-1). Each code word contains a 50% duty
cycle preamble, a header, 32 bits of encrypted data and
34 bits of fixed data followed by a guard period before
another code word can begin. Refer to Table 9-3 for
code word timing.
4.2
Code Word Organization
The HCS200 transmits a 66-bit code word when a
button is pressed. The 66-bit word is constructed from
a Fixed Code portion and an Encrypted Code portion
(Figure 4-2).
The 32 bits of Encrypted Data are generated from 4
button bits, 12 discrimination bits and the 16-bit sync
value. The encrypted portion alone provides up to four
billion changing code combinations.
The 34 bits of Fixed Code Data are made up of 1 status bit, 1 fixed bit, 4 button bits and the 28-bit serial
number. The fixed and encrypted sections combined
increase the number of code combinations to 7.38 x
1019.
4.3
Synchronous Transmission Mode
Synchronous Transmission mode can be used to clock
the code word out using an external clock.
To enter Synchronous Transmission mode, the Programming mode start-up sequence must be executed
as shown in Figure 4-3. If either S1 or S0 is set on the
falling edge of S2, the device enters Synchronous
Transmission mode. In this mode it functions as a normal transmitter, with the exception that the timing of the
PWM data string is controlled externally and that 16
extra reserved bits are transmitted at the end of the
code word. The reserved bits can be ignored. The button code will be the S0, S1 value at the falling edge of
S2. The timing of the PWM data string is controlled by
supplying a clock on S2 and should not exceed 20 kHz.
When in Synchronous Transmission mode S2 should
not be toggled until all internal processing has been
completed as shown in Figure 4-3.
VLOW SEL = 1
8.5
Max
8.0
7.5
7.0
Min
-40 -20
0
20
40
60
80 100
Temp (C)
© 2011 Microchip Technology Inc.
DS40138D-page 7
HCS200
FIGURE 4-1:
CODE WORD FORMAT
TE TE TE
LOGIC ‘0’
LOGIC ‘1’
Bit
Period
50% Duty Cycle
Preamble
TP
FIGURE 4-2:
Header
TH
Encrypted Portion
of Transmission
THOP
Guard
Time
TG
CODE WORD ORGANIZATION
34 bits of Fixed Portion
Fixed
(1-bit)
Fixed Portion of
Transmission
TFIX
VLOW
(1-bit)
MSb
Button
Status
S2 S1 S0 S3
32 bits of Encrypted Portion
Serial Number
(28 bits)
Button
Status
S2 S1 S0 S3
Discrimination
bits
(12 bits)
Sync Counter
(16 bits)
LSb
66 Data bits
Transmitted
LSb first.
Fixed
(1-bit)
MSb
VLOW
(1-bit)
Button
Status
1 1 1 1
Serial Number
(28 bits)
SEED
(32 bits)
LSb
SEED replaces Encrypted Portion when all button inputs are activated at the same time.
FIGURE 4-3:
SYNCHRONOUS TRANSMISSION MODE
TPS TPH1 TPH2
t = 50 ms
Preamble
Header
Data
PWM
S2
S[1:0]
FIGURE 4-4:
“01,10,11”
CODE WORD ORGANIZATION (SYNCHRONOUS TRANSMISSION MODE)
Fixed Portion
Reserved
(16 bits)
MSb
DS40138D-page 8
Padding
(2 bits)
Button
Status
S2 S1 S0 S3
Encrypted Portion
Serial Number
(28 bits)
Button
Status
S2 S1 S0 S3
Discrimination bits
(12 bits)
Sync Counter
(16 bits)
82 Data bits
Transmitted
LSb first.
LSb
© 2011 Microchip Technology Inc.
HCS200
5.0
SPECIAL FEATURES
5.1
Code Word Completion
Enabling the BACW option may likewise allow the user
to transmit a higher amplitude transmission as the time
averaged power is reduced. BACW effectively halves
the RF on time for a given transmission so the RF output power could theoretically be doubled while maintaining the same time averaged output power.
The code word completion feature ensures that entire
code words are transmitted, even if the button is
released before the code word is complete. If the button is held down beyond the time for one code word,
multiple code words will result. If another button is activated during a transmission, the active transmission
will be aborted and a new transmission will begin using
the new button information.
5.2
5.3
In order to increase the level of security in a system, it
is possible for the receiver to implement what is known
as a secure learn function. This can be done by utilizing
the seed value stored in EEPROM, transmitted only
when all three button inputs are pressed at the same
time (Table 5-1). Instead of the normal key generation
inputs being used to create the crypt key, this seed
value is used.
Blank Alternate Code Word
Federal Communications Commission (FCC) part 15
rules specify the limits on worst case average fundamental power and harmonics that can be transmitted in
a 100 ms window. For FCC approval purposes, it may
therefore be advantageous to minimize the transmission duty cycle. This can be achieved by minimizing the
duty cycle of the individual bits as well as by blanking
out consecutive code words. Blank Alternate Code
Word (BACW) may be used to reduce the average
power of a transmission by transmitting only every second code word (Figure 5-1). This is a selectable feature
that is determined in conjunction with the baud rate
selection bit BSL0.
FIGURE 5-1:
Seed Transmission
5.4
VLOW: Voltage LOW Indicator
The VLOW signal is transmitted so the receiver can give
an indication to the user that the transmitter battery is
low. The VLOW bit is included in every transmission
(Figure 4-2 and Figure 9-5) and will be transmitted as a
zero if the operating voltage is above the low voltage
trip point. Refer to Figure 4-2. The trip point is selectable based on the battery voltage being used. See Section 3.6.3 for a description of how the low voltage trip
point is configured.
BLANK ALTERNATE CODE WORD (BACW)
Transmission Amplitude = A
BACW Disabled
(All words transmitted)
A
BACW Enabled
(1 out of 2 transmitted)
2A
TABLE 5-1:
Code Word
Code Word
Code Word
Code
Word
Code
Word
Code
Word
Code Word
Code
Word
PIN ACTIVATION TABLE
External
Standby
Hopping Code
Transmission
Seed Transmission
Internal
S2
S1
S0
S3
S2
S1
S0
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
1
1
1
0
1
0
1
0
0
0
1
© 2011 Microchip Technology Inc.
DS40138D-page 9
HCS200
6.0
PROGRAMMING THE HCS200
word is sent, a programming delay of TWC is required
for the internal program cycle to complete. At the end
of the programming cycle, the device can be verified
(Figure 6-2) by reading back the EEPROM. Reading is
done by clocking the S2 line and reading the data bits
on PWM. The falling edge of S2 initiates the reading.
For security reasons, it is not possible to execute a Verify function without first programming the EEPROM. A
Verify operation can only be done immediately following the Program cycle.
When using the HCS200 in a system, the user will have
to program some parameters into the device, such as
the serial number and crypt key, before it can be used.
The programming cycle allows the user to input all 192
bits in a serial data stream, which are then stored internally in EEPROM. Programming will be initiated by
forcing the PWM line high, after the S2 line has been
held high for the appropriate length of time (Table 6-1
and Figure 6-1). After the Program mode is entered, a
delay must be provided for the automatic bulk write
cycle to complete. This will write all locations in the
EEPROM to zeros. The device can then be programmed by clocking in 16 bits at a time, using S2 as
the clock line and PWM as the data in line; data is
clocked in on the falling edge of S2. After each 16-bit
FIGURE 6-1:
Note:
To ensure that the device does not accidentally enter Programming mode (resulting in a bulk erase), PWM should never be
pulled high by the circuit connected to it.
Special care should be taken when driving
PNP RF transistors.
PROGRAMMING WAVEFORMS
Enter Program
Mode
TPBW
TDS
TCLKH
TWC
S2
(Clock)
TPS TPH1
TDH
TCLKL
PWM
(Data)
Bit 0
Bit 1
Bit 2
Bit 3
Bit 14
Bit 15
Bit 16
Data for Word 1
Data for Word 0 (KEY_0)
Repeat for each word (12 times)
TPH2
Bit 17
Note 1: Unused button inputs to be held to ground during the entire programming sequence.
2: The VDD pin must be taken to ground after a Program/Verify cycle.
FIGURE 6-2:
VERIFY WAVEFORMS
End of Programming Cycle
Beginning of Verify Cycle
Data from Word 0
PWM
(Data)
Bit190 Bit191
Bit 0
TWC
Bit 1 Bit 2
Bit 3
Bit 14
Bit 15
Bit 16 Bit 17
Bit190 Bit191
TDV
S2
(Clock)
Note: If a Verify operation is to be done, then it must immediately follow the Program cycle.
DS40138D-page 10
© 2011 Microchip Technology Inc.
HCS200
TABLE 6-1:
PROGRAMMING/VERIFY TIMING REQUIREMENTS
VDD = 5.0V ± 10%, 25°C ± 5 °C
Parameter
Program mode setup time
Hold time 1
Hold time 2
Bulk Write time
Program delay time
Program cycle time
Clock low time
Clock high time
Data setup time
Data hold time
Data out valid time
Symbol
Min.
Max.
Units
TPS
TPH1
TPH2
TPBW
TPROG
TWC
TCLKL
TCLKH
TDS
TDH
TDV
3.5
3.5
50
4.0
4.0
50
50
50
0
30
—
4.5
—
—
—
—
—
—
—
—
—
30
ms
ms
μs
ms
ms
ms
μs
μs
μs (1)
μs (1)
μs (1)
Note 1: Typical values - not tested in production.
© 2011 Microchip Technology Inc.
DS40138D-page 11
HCS200
7.0
INTEGRATING THE HCS200
INTO A SYSTEM
An HCS200 based system requires a compatible
decoder. The decoder is typically a microcontroller with
compatible firmware. Microchip provides, via a license
agreement, firmware routines that will receive and
authenticate HCS200 transmissions. These routines
provide designers the means to develop their own
decoding system.
7.1
Learning a Transmitter to a
Receiver
A transmitter must first be 'learned' by a decoder before
its use is allowed in the system. Several learning strategies are possible, Figure 7-1 details a typical learn
sequence. Core to each, the decoder must minimally
store each learned transmitter's serial number and current synchronization counter value in EEPROM. Additionally, the decoder typically stores each transmitter's
unique crypt key. The maximum number of learned
transmitters will therefore be relative to the available
EEPROM.
A transmitter's serial number is transmitted in the clear
but the synchronization counter only exists in the code
word's encrypted portion. The decoder obtains the
counter value by decrypting using the same key used
to encrypt the information. The KEELOQ algorithm is a
symmetrical block cipher so the encryption and decryption keys are identical and referred to generally as the
crypt key. The encoder receives its crypt key during
manufacturing. The decoder is programmed with the
ability to generate a crypt key as well as all but one
required input to the key generation routine; typically
the transmitter's serial number.
Figure 7-1 summarizes a typical learn sequence. The
decoder receives and authenticates a first transmission; first button press. Authentication involves generating the appropriate crypt key, decrypting, validating
the correct key usage via the discrimination bits and
buffering the counter value. A second transmission is
received and authenticated. A final check verifies the
counter values were sequential; consecutive button
presses. If the learn sequence is successfully complete, the decoder stores the learned transmitter's
serial number, current synchronization counter value
and appropriate crypt key. From now on the crypt key
will be retrieved from EEPROM during normal operation instead of recalculating it for each transmission
received.
FIGURE 7-1:
TYPICAL LEARN SEQUENCE
Enter Learn
Mode
Wait for Reception
of a Valid Code
Generate Key
from Serial Number
Use Generated Key
to Decrypt
Compare Discrimination
Value with Fixed Value
Equal
?
No
Yes
Wait for Reception
of Second Valid Code
Use Generated Key
to Decrypt
Compare Discrimination
Value with Fixed Value
Equal
?
No
Yes
Counters
Sequential
?
Yes
No
Learn successful.
Store:
Serial number
Crypt key
Synchronization counter
Learn
Unsuccessful
Exit
Certain learning strategies have been patented and
care must be taken not to infringe.
DS40138D-page 12
© 2011 Microchip Technology Inc.
HCS200
7.2
Decoder Operation
7.3
Figure 7-2 summarizes normal decoder operation. The
decoder waits until a transmission is received. The
received serial number is compared to the EEPROM
table of learned transmitters to first determine if this
transmitter's use is allowed in the system. If from a
learned transmitter, the transmission is decrypted
using the stored crypt key and authenticated via the
discrimination bits for appropriate crypt key usage. If
the decryption was valid the synchronization value is
evaluated.
FIGURE 7-2:
TYPICAL DECODER
OPERATION
Start
No
Transmission
Received
?
Yes
No
Is
Decryption
Valid
?
Yes
No
Is
Counter
Within 16
?
Yes
No
No
Is
Counter
Within 32K
?
Yes
Save Counter
in Temp Location
© 2011 Microchip Technology Inc.
The KEELOQ technology patent scope includes a
sophisticated synchronization technique that does not
require the calculation and storage of future codes. The
technique securely blocks invalid transmissions while
providing transparent resynchronization to transmitters
inadvertently activated away from the receiver.
Figure 7-3 shows a 3-partition, rotating synchronization
window. The size of each window is optional but the
technique is fundamental. Each time a transmission is
authenticated, the intended function is executed and
the transmission's synchronization counter value is
stored in EEPROM. From the currently stored counter
value there is an initial "Single Operation" forward window of 16 codes. If the difference between a received
synchronization counter and the last stored counter is
within 16, the intended function will be executed on the
single button press and the new synchronization counter will be stored. Storing the new synchronization
counter value effectively rotates the entire synchronization window.
A "Double Operation" (resynchronization) window further exists from the Single Operation window up to 32K
codes forward of the currently stored counter value. It
is referred to as "Double Operation" because a transmission with synchronization counter value in this window will require an additional, sequential counter
transmission prior to executing the intended function.
Upon receiving the sequential transmission the
decoder executes the intended function and stores the
synchronization counter value. This resynchronization
occurs transparently to the user as it is human nature
to press the button a second time if the first was unsuccessful.
Does
Serial Number
Match
?
Yes
Decrypt Transmission
No
Synchronization with Decoder
(Evaluating the Counter)
Execute
Command
and
Update
Counter
The third window is a "Blocked Window" ranging from
the double operation window to the currently stored
synchronization counter value. Any transmission with
synchronization counter value within this window will
be ignored. This window excludes previously used,
perhaps code-grabbed transmissions from accessing
the system.
Note:
The synchronization method described in
this section is only a typical implementation
and because it is usually implemented in
firmware, it can be altered to fit the needs
of a particular system.
DS40138D-page 13
HCS200
FIGURE 7-3:
SYNCHRONIZATION WINDOW
Entire Window
rotates to eliminate
use of previously
used codes
Blocked
Window
(32K Codes)
Double Operation
(resynchronization)
Window
(32K Codes)
DS40138D-page 14
Stored
Synchronization
Counter Value
Single Operation
Window
(16 Codes)
© 2011 Microchip Technology Inc.
HCS200
8.0
DEVELOPMENT SUPPORT
The PIC® microcontrollers and dsPIC® digital signal
controllers are supported with a full range of software
and hardware development tools:
• Integrated Development Environment
- MPLAB® IDE Software
• Compilers/Assemblers/Linkers
- MPLAB C Compiler for Various Device
Families
- HI-TECH C for Various Device Families
- MPASMTM Assembler
- MPLINKTM Object Linker/
MPLIBTM Object Librarian
- MPLAB Assembler/Linker/Librarian for
Various Device Families
• Simulators
- MPLAB SIM Software Simulator
• Emulators
- MPLAB REAL ICE™ In-Circuit Emulator
• In-Circuit Debuggers
- MPLAB ICD 3
- PICkit™ 3 Debug Express
• Device Programmers
- PICkit™ 2 Programmer
- MPLAB PM3 Device Programmer
• Low-Cost Demonstration/Development Boards,
Evaluation Kits, and Starter Kits
8.1
MPLAB Integrated Development
Environment Software
The MPLAB IDE software brings an ease of software
development previously unseen in the 8/16/32-bit
microcontroller market. The MPLAB IDE is a Windows®
operating system-based application that contains:
• A single graphical interface to all debugging tools
- Simulator
- Programmer (sold separately)
- In-Circuit Emulator (sold separately)
- In-Circuit Debugger (sold separately)
• A full-featured editor with color-coded context
• A multiple project manager
• Customizable data windows with direct edit of
contents
• High-level source code debugging
• Mouse over variable inspection
• Drag and drop variables from source to watch
windows
• Extensive on-line help
• Integration of select third party tools, such as
IAR C Compilers
The MPLAB IDE allows you to:
• Edit your source files (either C or assembly)
• One-touch compile or assemble, and download to
emulator and simulator tools (automatically
updates all project information)
• Debug using:
- Source files (C or assembly)
- Mixed C and assembly
- Machine code
MPLAB IDE supports multiple debugging tools in a
single development paradigm, from the cost-effective
simulators, through low-cost in-circuit debuggers, to
full-featured emulators. This eliminates the learning
curve when upgrading to tools with increased flexibility
and power.
© 2011 Microchip Technology Inc.
DS40138D-page 15
HCS200
8.2
MPLAB C Compilers for Various
Device Families
The MPLAB C Compiler code development systems
are complete ANSI C compilers for Microchip’s PIC18,
PIC24 and PIC32 families of microcontrollers and the
dsPIC30 and dsPIC33 families of digital signal controllers. These compilers provide powerful integration
capabilities, superior code optimization and ease of
use.
For easy source level debugging, the compilers provide
symbol information that is optimized to the MPLAB IDE
debugger.
8.3
HI-TECH C for Various Device
Families
The HI-TECH C Compiler code development systems
are complete ANSI C compilers for Microchip’s PIC
family of microcontrollers and the dsPIC family of digital
signal controllers. These compilers provide powerful
integration capabilities, omniscient code generation
and ease of use.
For easy source level debugging, the compilers provide
symbol information that is optimized to the MPLAB IDE
debugger.
The compilers include a macro assembler, linker, preprocessor, and one-step driver, and can run on multiple
platforms.
8.4
MPASM Assembler
The MPASM Assembler is a full-featured, universal
macro assembler for PIC10/12/16/18 MCUs.
The MPASM Assembler generates relocatable object
files for the MPLINK Object Linker, Intel® standard HEX
files, MAP files to detail memory usage and symbol
reference, absolute LST files that contain source lines
and generated machine code and COFF files for
debugging.
The MPASM Assembler features include:
8.5
MPLINK Object Linker/
MPLIB Object Librarian
The MPLINK Object Linker combines relocatable
objects created by the MPASM Assembler and the
MPLAB C18 C Compiler. It can link relocatable objects
from precompiled libraries, using directives from a
linker script.
The MPLIB Object Librarian manages the creation and
modification of library files of precompiled code. When
a routine from a library is called from a source file, only
the modules that contain that routine will be linked in
with the application. This allows large libraries to be
used efficiently in many different applications.
The object linker/library features include:
• Efficient linking of single libraries instead of many
smaller files
• Enhanced code maintainability by grouping
related modules together
• Flexible creation of libraries with easy module
listing, replacement, deletion and extraction
8.6
MPLAB Assembler, Linker and
Librarian for Various Device
Families
MPLAB Assembler produces relocatable machine
code from symbolic assembly language for PIC24,
PIC32 and dsPIC devices. MPLAB C Compiler uses
the assembler to produce its object file. The assembler
generates relocatable object files that can then be
archived or linked with other relocatable object files and
archives to create an executable file. Notable features
of the assembler include:
•
•
•
•
•
•
Support for the entire device instruction set
Support for fixed-point and floating-point data
Command line interface
Rich directive set
Flexible macro language
MPLAB IDE compatibility
• Integration into MPLAB IDE projects
• User-defined macros to streamline
assembly code
• Conditional assembly for multi-purpose
source files
• Directives that allow complete control over the
assembly process
DS40138D-page 16
© 2011 Microchip Technology Inc.
HCS200
8.7
MPLAB SIM Software Simulator
The MPLAB SIM Software Simulator allows code
development in a PC-hosted environment by simulating the PIC MCUs and dsPIC® DSCs on an instruction
level. On any given instruction, the data areas can be
examined or modified and stimuli can be applied from
a comprehensive stimulus controller. Registers can be
logged to files for further run-time analysis. The trace
buffer and logic analyzer display extend the power of
the simulator to record and track program execution,
actions on I/O, most peripherals and internal registers.
The MPLAB SIM Software Simulator fully supports
symbolic debugging using the MPLAB C Compilers,
and the MPASM and MPLAB Assemblers. The software simulator offers the flexibility to develop and
debug code outside of the hardware laboratory environment, making it an excellent, economical software
development tool.
8.8
MPLAB REAL ICE In-Circuit
Emulator System
MPLAB REAL ICE In-Circuit Emulator System is
Microchip’s next generation high-speed emulator for
Microchip Flash DSC and MCU devices. It debugs and
programs PIC® Flash MCUs and dsPIC® Flash DSCs
with the easy-to-use, powerful graphical user interface of
the MPLAB Integrated Development Environment (IDE),
included with each kit.
The emulator is connected to the design engineer’s PC
using a high-speed USB 2.0 interface and is connected
to the target with either a connector compatible with incircuit debugger systems (RJ11) or with the new highspeed, noise tolerant, Low-Voltage Differential Signal
(LVDS) interconnection (CAT5).
The emulator is field upgradable through future firmware
downloads in MPLAB IDE. In upcoming releases of
MPLAB IDE, new devices will be supported, and new
features will be added. MPLAB REAL ICE offers
significant advantages over competitive emulators
including low-cost, full-speed emulation, run-time
variable watches, trace analysis, complex breakpoints, a
ruggedized probe interface and long (up to three meters)
interconnection cables.
© 2011 Microchip Technology Inc.
8.9
MPLAB ICD 3 In-Circuit Debugger
System
MPLAB ICD 3 In-Circuit Debugger System is Microchip's most cost effective high-speed hardware
debugger/programmer for Microchip Flash Digital Signal Controller (DSC) and microcontroller (MCU)
devices. It debugs and programs PIC® Flash microcontrollers and dsPIC® DSCs with the powerful, yet easyto-use graphical user interface of MPLAB Integrated
Development Environment (IDE).
The MPLAB ICD 3 In-Circuit Debugger probe is connected to the design engineer's PC using a high-speed
USB 2.0 interface and is connected to the target with a
connector compatible with the MPLAB ICD 2 or MPLAB
REAL ICE systems (RJ-11). MPLAB ICD 3 supports all
MPLAB ICD 2 headers.
8.10
PICkit 3 In-Circuit Debugger/
Programmer and
PICkit 3 Debug Express
The MPLAB PICkit 3 allows debugging and programming of PIC® and dsPIC® Flash microcontrollers at a
most affordable price point using the powerful graphical
user interface of the MPLAB Integrated Development
Environment (IDE). The MPLAB PICkit 3 is connected
to the design engineer's PC using a full speed USB
interface and can be connected to the target via an
Microchip debug (RJ-11) connector (compatible with
MPLAB ICD 3 and MPLAB REAL ICE). The connector
uses two device I/O pins and the reset line to implement in-circuit debugging and In-Circuit Serial Programming™.
The PICkit 3 Debug Express include the PICkit 3, demo
board and microcontroller, hookup cables and CDROM
with user’s guide, lessons, tutorial, compiler and
MPLAB IDE software.
DS40138D-page 17
HCS200
8.11
PICkit 2 Development
Programmer/Debugger and
PICkit 2 Debug Express
The PICkit™ 2 Development Programmer/Debugger is
a low-cost development tool with an easy to use interface for programming and debugging Microchip’s Flash
families of microcontrollers. The full featured
Windows® programming interface supports baseline
(PIC10F,
PIC12F5xx,
PIC16F5xx),
midrange
(PIC12F6xx, PIC16F), PIC18F, PIC24, dsPIC30,
dsPIC33, and PIC32 families of 8-bit, 16-bit, and 32-bit
microcontrollers, and many Microchip Serial EEPROM
products. With Microchip’s powerful MPLAB Integrated
Development Environment (IDE) the PICkit™ 2
enables in-circuit debugging on most PIC® microcontrollers. In-Circuit-Debugging runs, halts and single
steps the program while the PIC microcontroller is
embedded in the application. When halted at a breakpoint, the file registers can be examined and modified.
The PICkit 2 Debug Express include the PICkit 2, demo
board and microcontroller, hookup cables and CDROM
with user’s guide, lessons, tutorial, compiler and
MPLAB IDE software.
8.12
MPLAB PM3 Device Programmer
The MPLAB PM3 Device Programmer is a universal,
CE compliant device programmer with programmable
voltage verification at VDDMIN and VDDMAX for
maximum reliability. It features a large LCD display
(128 x 64) for menus and error messages and a modular, detachable socket assembly to support various
package types. The ICSP™ cable assembly is included
as a standard item. In Stand-Alone mode, the MPLAB
PM3 Device Programmer can read, verify and program
PIC devices without a PC connection. It can also set
code protection in this mode. The MPLAB PM3
connects to the host PC via an RS-232 or USB cable.
The MPLAB PM3 has high-speed communications and
optimized algorithms for quick programming of large
memory devices and incorporates an MMC card for file
storage and data applications.
DS40138D-page 18
8.13
Demonstration/Development
Boards, Evaluation Kits, and
Starter Kits
A wide variety of demonstration, development and
evaluation boards for various PIC MCUs and dsPIC
DSCs allows quick application development on fully functional systems. Most boards include prototyping areas for
adding custom circuitry and provide application firmware
and source code for examination and modification.
The boards support a variety of features, including LEDs,
temperature sensors, switches, speakers, RS-232
interfaces, LCD displays, potentiometers and additional
EEPROM memory.
The demonstration and development boards can be
used in teaching environments, for prototyping custom
circuits and for learning about various microcontroller
applications.
In addition to the PICDEM™ and dsPICDEM™ demonstration/development board series of circuits, Microchip
has a line of evaluation kits and demonstration software
for analog filter design, KEELOQ® security ICs, CAN,
IrDA®, PowerSmart battery management, SEEVAL®
evaluation system, Sigma-Delta ADC, flow rate
sensing, plus many more.
Also available are starter kits that contain everything
needed to experience the specified device. This usually
includes a single application and debug capability, all
on one board.
Check the Microchip web page (www.microchip.com)
for the complete list of demonstration, development
and evaluation kits.
© 2011 Microchip Technology Inc.
HCS200
9.0
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings(†)
VDD Supply voltage ......................................................................................................................................-0.3 to 13.3V
VIN Input voltage ............................................................................................................................................ -0.3 to 13.3
VOUT Output voltage ........................................................................................................................... -0.3 to VDD + 0.3V
IOUT Max output current ......................................................................................................................................... 25 mA
TSTG Storage temperature (Note) .............................................................................................................. -55 to +125°C
TLSOL Lead soldering temp (Note)......................................................................................................................... 300°C
VESD ESD rating .....................................................................................................................................................4000V
†
NOTICE: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the
device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operation listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.
TABLE 9-1:
DC CHARACTERISTICS
Commercial(C):Tamb = 0°C to +70°C
Industrial(I):Tamb = -40°C to +85°C
3.5V < VDD < 13.0V
Parameter
Operating Current (avg)
Sym.
Min
ICC
Typ*
Max
Unit
Conditions
0.6
1.5
8.0
1.0
3.0
12.0
mA
VDD = 3.5V
VDD = 6.6V
VDD = 13.0V
1
10
μA
Standby Current
ICCS
High Level Input Voltage
VIH
0.4 VDD
VDD+
0.3
V
Low Level Input Voltage
VIL
-0.3
0.15 VDD
V
High Level Output Voltage
VOH
0.5 VDD
Low Level Output Voltage
VOL
V
IOH = -2.0 mA
0.08 VDD
V
IOL = 2.0 mA
Pull-Down Resistance;
S0-S2
RS0-2
40
60
80
KΩ
VIN = 4.0V
Pull-Down Resistance;
PWM
RPWM
80
120
160
KΩ
VIN = 4.0V
Note:
Typical values are at 25°C.
© 2011 Microchip Technology Inc.
DS40138D-page 19
HCS200
FIGURE 9-1:
TYPICAL ICC CURVE OF HCS200 WITH EXTERNAL RESISTORS
50Ω
12.0
10.0
mA
8.0
6.0
4.0
2.0
0.0
2
3
4
5
6
7
8
9
10
11
12
13
9
10
11
12
13
9
10
11
12
13
VBAT [V]
1K External
12.0
10.0
mA
8.0
6.0
4.0
2.0
0.0
2
3
4
5
6
7
8
VBAT [V]
2K External
12.0
10.0
mA
8.0
6.0
4.0
2.0
0.0
2
3
4
5
6
7
8
VBAT [V]
LEGEND
Typical
Maximum
Minimum
DS40138D-page 20
© 2011 Microchip Technology Inc.
HCS200
FIGURE 9-2:
POWER-UP AND TRANSMIT TIMING
Button Press
Detect
Multiple Code Word Transmission
TBP
TTD
TDB
PWM
Output
Code
Word
1
Code
Word
2
Code
Word
3
Code
Word
4
Code
Word
n
TTO
Button
Input
Sn
POWER-UP AND TRANSMIT TIMING(2)
TABLE 9-2:
VDD = +3.5 to 13.0V
Commercial(C): Tamb = 0°C to +70°C
Industrial(I): Tamb = -40°C to +85°C
Symbol
TBP
Parameter
Min
Max
Unit
Remarks
Time to second button press
10 + Code 26 + Code
ms
(Note 1)
Word
Word
Transmit delay from button detect
10
26
ms
TTD
TDB
Debounce Delay
6
15
ms
Auto-shutoff time-out period
20
120
s
TTO
Note 1: TBP is the time in which a second button can be pressed without completion of the first code word and the
intention was to press the combination of buttons.
2: Typical values - not tested in production.
FIGURE 9-3:
CODE WORD FORMAT
TE TE TE
LOGIC ‘0’
LOGIC ‘1’
Bit Period
TBP
50% Duty Cycle
Preamble
TP
© 2011 Microchip Technology Inc.
Header
TH
Encrypted Portion
of Transmission
THOP
Fixed Portion of
Transmission
TFIX
Guard
Time
TG
DS40138D-page 21
HCS200
FIGURE 9-4:
CODE WORD FORMAT: PREAMBLE/HEADER PORTION
P1
P12
23 TE 50% Duty Cycle Preamble
FIGURE 9-5:
MSB LSB
LSB
Bit 0 Bit 1
MSB
Button Code
Status
S3
S0
S1
S2
VLOW RPT
Guard
Time
Fixed Portion
CODE WORD TIMING
VDD = +3.5 to 13.0V
Commercial(C):Tamb = 0°C to +70°C
Industrial(I):Tamb = -40°C to +85°C
Symbol
Data Bits
Bit 30 Bit 31 Bit 32 Bit 33 Bit 58 Bit 59 Bit 60 Bit 61 Bit 62 Bit 63 Bit 64 Bit 65
Encrypted Portion
TABLE 9-3:
10 TE Header
CODE WORD FORMAT: DATA PORTION
Serial Number
Header
Bit 0 Bit 1
Characteristic
Code Words Transmitted
All
1 out of 2
Number
of TE
Min.
Typ.
Max.
Min.
Typ.
Max.
Units
1
280
400
620
140
200
310
μs
TE
Basic pulse element
TBP
PWM bit pulse width
3
840
1200
1860
420
600
930
μs
TP
Preamble duration
23
6.4
9.2
14.3
3.2
4.6
7.1
ms
TH
Header duration
10
2.8
4.0
6.2
1.4
2.0
3.1
ms
THOP
Hopping code duration
96
26.9
38.4
59.5
13.4
19.2
29.8
ms
TFIX
Fixed code duration
102
28.6
40.8
63.2
14.3
20.4
31.6
ms
TG
Guard Time
39
10.9
15.6
24.2
5.5
7.8
12.1
ms
—
Total Transmit Time
270
75.6
108.0
167.4
37.8
54.0
83.7
ms
—
PWM data rate
—
1190
833
538
2381
1667
1075
bps
Note:
The timing parameters are not tested but derived from the oscillator clock.
DS40138D-page 22
© 2011 Microchip Technology Inc.
HCS200
FIGURE 9-6:
HCS200 TE VS. TEMP (BY CHARACTERIZATION)
1.7
1.6
1.5
1.4
TE Max.
VDD = 3.5V
1.3
TE
1.2
1.1
1.0
0.9
0.8
0.7
VDD = 5.0V
Typical
VDD = 5.0V
TE Min.
0.6
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
TEMPERATURE °C
© 2011 Microchip Technology Inc.
DS40138D-page 23
HCS200
10.0
PACKAGING INFORMATION
10.1
Package Marking Information
8-Lead PDIP
Example
XXXXXXXX
XXXXXNNN
YYWW
HCS200
XXXXXNNN
0025
8-Lead SOIC
Example
XXXXXXX
XXXYYWW
NNN
HCS200
XXX0025
NNN
Legend:
Note:
*
XX...X
Y
YY
WW
NNN
Customer specific information*
Year code (last digit of calendar year)
Year code (last 2 digits of calendar year)
Week code (week of January 1 is week ‘01’)
Alphanumeric traceability code
In the event the full Microchip part number cannot be marked on one line, it will
be carried over to the next line thus limiting the number of available characters
for customer specific information.
Standard PIC® MCU device marking consists of Microchip part number, year code, week code, and
traceability code. For PIC MCU device marking beyond this, certain price adders apply. Please check
with your Microchip Sales Office. For QTP devices, any special marking adders are included in QTP
price.
DS40138D-page 24
© 2011 Microchip Technology Inc.
HCS200
10.2
Package Details
3 & ' !&" & 4# *!( !!& 4 %& &#&
&& 255***' '5 4
N
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© 2011 Microchip Technology Inc.
* ,<1
DS40138D-page 25
HCS200
Note:
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
DS40138D-page 26
© 2011 Microchip Technology Inc.
HCS200
Note:
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
© 2011 Microchip Technology Inc.
DS40138D-page 27
HCS200
! ""#$%& !'
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DS40138D-page 28
© 2011 Microchip Technology Inc.
HCS200
APPENDIX A:
ADDITIONAL
INFORMATION
Microchip’s Secure Data Products are covered by
some or all of the following:
Code hopping encoder patents issued in European
countries and U.S.A.
Secure learning patents issued in European countries,
U.S.A. and R.S.A.
REVISION HISTORY
Revision D (June 2011)
• Updated the following sections: Development Support, The Microchip Web Site, Reader Response
and HCS200 Product Identification System
• Added new section Appendix A
• Minor formatting and text changes were incorporated
throughout the document
© 2011 Microchip Technology Inc.
DS40138D-page 29
HCS200
THE MICROCHIP WEB SITE
CUSTOMER SUPPORT
Microchip provides online support via our WWW site at
www.microchip.com. This web site is used as a means
to make files and information easily available to
customers. Accessible by using your favorite Internet
browser, the web site contains the following
information:
Users of Microchip products can receive assistance
through several channels:
• Product Support – Data sheets and errata,
application notes and sample programs, design
resources, user’s guides and hardware support
documents, latest software releases and archived
software
• General Technical Support – Frequently Asked
Questions (FAQ), technical support requests,
online discussion groups, Microchip consultant
program member listing
• Business of Microchip – Product selector and
ordering guides, latest Microchip press releases,
listing of seminars and events, listings of
Microchip sales offices, distributors and factory
representatives
•
•
•
•
•
Distributor or Representative
Local Sales Office
Field Application Engineer (FAE)
Technical Support
Development Systems Information Line
Customers
should
contact
their
distributor,
representative or field application engineer (FAE) for
support. Local sales offices are also available to help
customers. A listing of sales offices and locations is
included in the back of this document.
Technical support is available through the web site
at: http://microchip.com/support
CUSTOMER CHANGE NOTIFICATION
SERVICE
Microchip’s customer notification service helps keep
customers current on Microchip products. Subscribers
will receive e-mail notification whenever there are
changes, updates, revisions or errata related to a
specified product family or development tool of interest.
To register, access the Microchip web site at
www.microchip.com. Under “Support”, click on
“Customer Change Notification” and follow the
registration instructions.
DS40138D-page 30
© 2011 Microchip Technology Inc.
HCS200
READER RESPONSE
It is our intention to provide you with the best documentation possible to ensure successful use of your Microchip
product. If you wish to provide your comments on organization, clarity, subject matter, and ways in which our
documentation can better serve you, please FAX your comments to the Technical Publications Manager at
(480) 792-4150.
Please list the following information, and use this outline to provide us with your comments about this document.
TO:
Technical Publications Manager
RE:
Reader Response
Total Pages Sent ________
From: Name
Company
Address
City / State / ZIP / Country
Telephone: (_______) _________ - _________
FAX: (______) _________ - _________
Application (optional):
Would you like a reply?
Y
N
Device: HCS200
Literature Number: DS40138D
Questions:
1. What are the best features of this document?
2. How does this document meet your hardware and software development needs?
3. Do you find the organization of this document easy to follow? If not, why?
4. What additions to the document do you think would enhance the structure and subject?
5. What deletions from the document could be made without affecting the overall usefulness?
6. Is there any incorrect or misleading information (what and where)?
7. How would you improve this document?
© 2011 Microchip Technology Inc.
DS40138D-page 31
HCS200
HCS200 PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.
HCS200 -
/P
Package:
Temperature
Range:
Device:
DS40138D-page 32
P = Plastic DIP (300 mil Body), 8-lead)
SN = Plastic SOIC (150 mil Body), 8-lead
Blank = 0°C to +70°C
I = –40°C to +85°C
HCS200 = Code Hopping Encoder
HCS200T = Code Hopping Encoder (Tape and Reel)
© 2011 Microchip Technology Inc.
Note the following details of the code protection feature on Microchip devices:
•
Microchip products meet the specification contained in their particular Microchip Data Sheet.
•
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
•
Microchip is willing to work with the customer who is concerned about the integrity of their code.
•
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
the buyer’s risk, and the buyer agrees to defend, indemnify and
hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights.
Trademarks
The Microchip name and logo, the Microchip logo, dsPIC,
KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART,
PIC32 logo, rfPIC and UNI/O are registered trademarks of
Microchip Technology Incorporated in the U.S.A. and other
countries.
FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor,
MXDEV, MXLAB, SEEVAL and The Embedded Control
Solutions Company are registered trademarks of Microchip
Technology Incorporated in the U.S.A.
Analog-for-the-Digital Age, Application Maestro, CodeGuard,
dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial
Programming, ICSP, Mindi, MiWi, MPASM, MPLAB Certified
logo, MPLIB, MPLINK, mTouch, Omniscient Code
Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit,
PICtail, REAL ICE, rfLAB, Select Mode, Total Endurance,
TSHARC, UniWinDriver, WiperLock and ZENA are
trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.
SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
© 2011, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
ISBN: 978-1-61341-221-3
Microchip received ISO/TS-16949:2002 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
© 2011 Microchip Technology Inc.
DS40138D-page 33
Worldwide Sales and Service
AMERICAS
ASIA/PACIFIC
ASIA/PACIFIC
EUROPE
Corporate Office
2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Tel: 480-792-7200
Fax: 480-792-7277
Technical Support:
http://www.microchip.com/
support
Web Address:
www.microchip.com
Asia Pacific Office
Suites 3707-14, 37th Floor
Tower 6, The Gateway
Harbour City, Kowloon
Hong Kong
Tel: 852-2401-1200
Fax: 852-2401-3431
India - Bangalore
Tel: 91-80-3090-4444
Fax: 91-80-3090-4123
India - New Delhi
Tel: 91-11-4160-8631
Fax: 91-11-4160-8632
Austria - Wels
Tel: 43-7242-2244-39
Fax: 43-7242-2244-393
Denmark - Copenhagen
Tel: 45-4450-2828
Fax: 45-4485-2829
India - Pune
Tel: 91-20-2566-1512
Fax: 91-20-2566-1513
France - Paris
Tel: 33-1-69-53-63-20
Fax: 33-1-69-30-90-79
Japan - Yokohama
Tel: 81-45-471- 6166
Fax: 81-45-471-6122
Germany - Munich
Tel: 49-89-627-144-0
Fax: 49-89-627-144-44
Atlanta
Duluth, GA
Tel: 678-957-9614
Fax: 678-957-1455
Boston
Westborough, MA
Tel: 774-760-0087
Fax: 774-760-0088
Chicago
Itasca, IL
Tel: 630-285-0071
Fax: 630-285-0075
Cleveland
Independence, OH
Tel: 216-447-0464
Fax: 216-447-0643
Dallas
Addison, TX
Tel: 972-818-7423
Fax: 972-818-2924
Detroit
Farmington Hills, MI
Tel: 248-538-2250
Fax: 248-538-2260
Indianapolis
Noblesville, IN
Tel: 317-773-8323
Fax: 317-773-5453
Los Angeles
Mission Viejo, CA
Tel: 949-462-9523
Fax: 949-462-9608
Santa Clara
Santa Clara, CA
Tel: 408-961-6444
Fax: 408-961-6445
Toronto
Mississauga, Ontario,
Canada
Tel: 905-673-0699
Fax: 905-673-6509
Australia - Sydney
Tel: 61-2-9868-6733
Fax: 61-2-9868-6755
China - Beijing
Tel: 86-10-8569-7000
Fax: 86-10-8528-2104
China - Chengdu
Tel: 86-28-8665-5511
Fax: 86-28-8665-7889
China - Chongqing
Tel: 86-23-8980-9588
Fax: 86-23-8980-9500
Korea - Seoul
Tel: 82-2-554-7200
Fax: 82-2-558-5932 or
82-2-558-5934
China - Hangzhou
Tel: 86-571-2819-3180
Fax: 86-571-2819-3189
Malaysia - Kuala Lumpur
Tel: 60-3-6201-9857
Fax: 60-3-6201-9859
China - Hong Kong SAR
Tel: 852-2401-1200
Fax: 852-2401-3431
Malaysia - Penang
Tel: 60-4-227-8870
Fax: 60-4-227-4068
China - Nanjing
Tel: 86-25-8473-2460
Fax: 86-25-8473-2470
Philippines - Manila
Tel: 63-2-634-9065
Fax: 63-2-634-9069
China - Qingdao
Tel: 86-532-8502-7355
Fax: 86-532-8502-7205
Singapore
Tel: 65-6334-8870
Fax: 65-6334-8850
China - Shanghai
Tel: 86-21-5407-5533
Fax: 86-21-5407-5066
Taiwan - Hsin Chu
Tel: 886-3-6578-300
Fax: 886-3-6578-370
China - Shenyang
Tel: 86-24-2334-2829
Fax: 86-24-2334-2393
Taiwan - Kaohsiung
Tel: 886-7-213-7830
Fax: 886-7-330-9305
China - Shenzhen
Tel: 86-755-8203-2660
Fax: 86-755-8203-1760
Taiwan - Taipei
Tel: 886-2-2500-6610
Fax: 886-2-2508-0102
China - Wuhan
Tel: 86-27-5980-5300
Fax: 86-27-5980-5118
Thailand - Bangkok
Tel: 66-2-694-1351
Fax: 66-2-694-1350
Italy - Milan
Tel: 39-0331-742611
Fax: 39-0331-466781
Netherlands - Drunen
Tel: 31-416-690399
Fax: 31-416-690340
Spain - Madrid
Tel: 34-91-708-08-90
Fax: 34-91-708-08-91
UK - Wokingham
Tel: 44-118-921-5869
Fax: 44-118-921-5820
China - Xian
Tel: 86-29-8833-7252
Fax: 86-29-8833-7256
China - Xiamen
Tel: 86-592-2388138
Fax: 86-592-2388130
China - Zhuhai
Tel: 86-756-3210040
Fax: 86-756-3210049
DS40138D-page 34
Korea - Daegu
Tel: 82-53-744-4301
Fax: 82-53-744-4302
05/02/11
© 2011 Microchip Technology Inc.