MCS3142 MCS3142 Memory Programming Specification This document includes the programming specifications for the following device: • MCS3142 1.0 OVERVIEW The MCS3142 contains 128 bytes of nonvolatile memory. This array is used to store the various encryption parameters and device configuration options. Details of the individual Configuration bits is described in the device data sheet. The device is programmed serially using a clock input and bidirectional data signal. A special entry sequence is used to prevent accidental Program mode entry. Further, the device can only be programmed immediately after power-up. TABLE 1-1: PIN DESCRIPTION DURING PROGRAMMING During Programming Pin Name 2.0 Function Type Description PGC Programming Clock I TTL Input PGD Programming Data I/O TTL Input/Output VDD Power P Power VSS Ground P Ground DEVICE PINOUTS FIGURE 2-1: 20-PIN DIAGRAM FOR MCS3142 TSSOP 1 20 VSS 2 19 SW0 SOSCO 3 18 SW1 SW3 4 17 SW2 PGC 5 16 LED PGD 6 MCS3142 VDD SOSCI 15 DATA_OUT 14 CTRL_OUT VSS 7 VDD 8 13 XTAL CTRL_IN 9 12 DATA_IN 10 11 VSS RFOUT 2013-2014 Microchip Technology Inc. Preliminary DS40001682B-page 1 MCS3142 3.0 MEMORY MAP The program memory map for this device begins at 0x00 and extends as shown in Table 3-1. As the device is being programmed, the address counter automatically increments to the next byte location after receiving a data byte. Data is sent Least Significant Byte (LSB) first. TABLE 3-1: MEMORY MAP Address Size (bytes) Description KEELOQ® 0x00 - 0x07 8 Classic 0x08 - 0x0F 8 Classic KEELOQ Seed Value 0x10 - 0x13 4 Classic KEELOQ Serial Number 0x14 - 0x15 2 Classic KEELOQ DISC Value 0x16 - 0x17 2 Classic KEELOQ Encoder Configuration 0x18 - 0x19 2 Classic KEELOQ Transmitter Configuration 0x1A 1 Classic KEELOQ Minimum Packet 0x1B - 0x1C 2 Classic KEELOQ Maximum Packet 0x1D 1 Classic KEELOQ TE PR2 Value 0x1E - 0x2D 16 Ultimate KEELOQ Encryption Key 0x2E - 0x3D 16 Ultimate KEELOQ Seed Value 0x3E - 0x41 4 Ultimate KEELOQ Serial Number 0x42 - 0x43 2 Reserved 0x44 - 0x53 16 Ultimate KEELOQ Authorization Key 0x54 - 0x55 2 Ultimate KEELOQ Encoder Configuration 0x56 - 0x57 2 Ultimate KEELOQ Transmitter Configuration 0x58 1 Ultimate KEELOQ Minimum Packet 0x59 - 0x5A 2 Ultimate KEELOQ Maximum Packet 0x5B 1 Ultimate KEELOQ TE PR2 Value 0x5C - 0x5E 3 Encoder Frequency Setting 0x5F - 0x60 2 Encoder Button Configuration 0x61 - 0x62 2 Seed Packet Button Configuration 0x63 - 0x65 3 Ultimate KEELOQ Synchronization Counter, Copy 1 0x66 1 Ultimate KEELOQ Synchronization Counter CRC, Copy 1 0x67 - 0x68 2 Classic KEELOQ Synchronization Counter, Copy 1 0x69 1 Classic KEELOQ Synchronization Counter CRC, Copy 1 0x6A - 0x6B 2 Ultimate KEELOQ Resynchronization Counter, Copy 1 0x6C 1 Ultimate KEELOQ Resynchronization Counter CRC, Copy 1 0x6D - 0x70 4 Ultimate KEELOQ Low-speed Timer, Copy 1 0x71 1 Ultimate KEELOQ Low-speed Timer CRC, Copy 1 0x72 - 0x74 3 Ultimate KEELOQ Synchronization Counter, Copy 2 0x75 1 Reserved 0x76 - 0x77 2 Classic KEELOQ Synchronization Counter, Copy 2 0x78 1 Reserved 0x79 - 0x7A 2 Ultimate KEELOQ Resynchronization Counter, Copy 2 0x7B 1 Reserved 0x7C - 0x7F 4 Ultimate KEELOQ Low-speed Timer, Copy 2 DS40001682B-page 2 Encryption Key Preliminary 2013-2014 Microchip Technology Inc. MCS3142 4.0 PROGRAMMING 4.1 Entering Programming Mode Programming is initiated by forcing the PGD line high after the PGC line has been held high for the appropriate length of time. The programming sequence must happen immediately after device power-up. See Figure 4-1 and Table 5-2 for details. A delay must be provided for the automatic Bulk Erase cycle to complete after entering the Program mode sequence. The device can then be programmed by clocking in 8 bits at a time, using PGC as the clock line and PGD as the data line. All configurable options are programmed serially via the PGD and PGC pins of the device. The programming cycle must include all 888 bits of programmable data, which is stored in the device’s nonvolatile memory upon completion. Device programming must begin within a specific window after device power-up. The PGD and PGC pins are configured as inputs upon Reset and, if the programming sequence is started, will remain as inputs until the Verify stage is reached. The device’s memory is only readable during the Verify stage. There is no procedure to read memory except immediately after programming. 4.2 Serial Program Mode Write cycles are performed a byte at a time throughout the entire programming sequence. A delay after each 8-bit byte is required for the internal program cycle to complete. Data bytes are sent Least Significant bit (LSb) first. See Figure 4-1. FIGURE 4-1: PROGRAMMING WAVEFORM Enter Program TPBW Mode TS TDS TCLKH PGC TCLKL TWC TDH TPS TPH1 bit 0 bit 1 bit 2 bit 3 PGD TPH2 2013-2014 Microchip Technology Inc. bit 6 bit 7 Data for byte 0 Repeat for each byte Preliminary bit 8 bit 9 Data for byte 1 DS40001682B-page 3 MCS3142 4.3 Serial Verify Mode A verify operation is available immediately following the programming operation. It must be completed at the end of the programming sequence, before exiting the Programming mode. The programmer must provide a delay time to allow for write cycle completion. Afterwards, the programmer can provide clock cycles to begin reading data. See Figure 4-2. FIGURE 4-2: VERIFY WAVEFORMS End of Programming Cycle Beginning of Verify Cycle Data from byte 0 TWC Data from byte 1 TRC PGC PGD bit n-1 bit n bit 0 bit 1 bit 2 bit 3 bit 6 bit 7 bit 8 bit 9 bit 10 TDV DS40001682B-page 4 Preliminary 2013-2014 Microchip Technology Inc. MCS3142 5.0 ELECTRICAL SPECIFICATIONS Refer to the device data sheet for absolute maximum ratings. TABLE 5-1: DC CHARACTERISTICS Symbol Item Min. Max. Units VDD — 2.1 3.6 V VIH Input High Level 0.25 VDD + 0.8 — V VIL Input Low Level — 0.15 VDD V VOH Output High Level VDD - 0.7 — V VOL Output Low Level — 0.6 V TABLE 5-2: PROGRAM/VERIFY TIMING REQUIREMENTS Parameter Entry Start-up Delay Program Mode Setup Time Symbol Min. Max. Units TS 10 — ms TPS 3.5 11.5 ms Hold time 1 TPH1 3.5 — ms Hold time 2 TPH2 3.5 — ms Bulk Write Time TPBW 11 — ms Program Cycle Time TWC 8 — ms TRC 5 — ms Clock Low Time TCLKL 50 — µs Clock High Time TCLKH 50 — µs Data Setup Time TDS 0 — µs Data Hold Time TDH 30 — µs Data Out Valid Time TDV — 30 µs Program Read Cycle 2013-2014 Microchip Technology Inc. Preliminary DS40001682B-page 5 MCS3142 APPENDIX A: REVISION HISTORY Revision A (08/2013) Initial release. Revision B (01/2014) Updated Table 3-1. DS40001682B-page 6 Preliminary 2013-2014 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, FlashFlex, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART, PIC32 logo, rfPIC, SST, SST Logo, SuperFlash 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, MTP, SEEVAL and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. Silicon Storage Technology is a registered trademark of Microchip Technology Inc. in other countries. Analog-for-the-Digital Age, Application Maestro, BodyCom, chipKIT, chipKIT logo, CodeGuard, dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN, ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial Programming, ICSP, Mindi, MiWi, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit, PICtail, REAL ICE, rfLAB, Select Mode, SQI, Serial Quad I/O, Total Endurance, TSHARC, UniWinDriver, WiperLock, ZENA and Z-Scale 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. GestIC and ULPP are registered trademarks of Microchip Technology Germany II GmbH & Co. KG, a subsidiary of Microchip Technology Inc., in other countries. All other trademarks mentioned herein are property of their respective companies. © 2013-2014, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. ISBN: 9781620778371 QUALITY MANAGEMENT SYSTEM CERTIFIED BY DNV == ISO/TS 16949 == 2013-2014 Microchip Technology Inc. Microchip received ISO/TS-16949:2009 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. 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