ABRIDGED DATA SHEET DS28E01-100 1Kb Protected 1-Wire EEPROM with SHA-1 Engine General Description Features The DS28E01-100 combines 1024 bits of EEPROM with 1024 Bits of EEPROM Memory Partitioned Into challenge-and-response authentication security imple- Four Pages of 256 Bits mented with the ISO/IEC 10118-3 Secure Hash On-Chip 512-Bit SHA-1 Engine to Compute 160- Algorithm (SHA-1). The 1024-bit EEPROM array is con- Bit Message Authentication Codes (MACs) and to figured as four pages of 256 bits with a 64-bit scratch- Generate Secrets pad to perform write operations. All memory pages can be write protected, and one page can be put in Write Access Requires Knowledge of the Secret EPROM-emulation mode, where bits can only be and the Capability of Computing and Transmitting changed from a 1 to a 0 state. Each DS28E01-100 has a 160-Bit MAC as Authorization its own guaranteed unique 64-bit ROM registration num- User-Programmable Page Write Protection for ber that is factory lasered into the chip. The DS28E01- Page 0, Page 3, or All Four Pages Together 100 communicates over the single-contact 1-Wire bus. The communication follows the standard 1-Wire protocol User-Programmable OTP EPROM Emulation Mode with the registration number acting as the node address for Page 1 (Write to 0) in the case of a multidevice 1-Wire network. Communicates to Host with a Single Digital Signal at 15.3kbps or 90.9kbps Using 1-Wire Applications Protocol Printer Cartridge Configuration and Monitoring Switchpoint Hysteresis and Filtering to Optimize Medical Sensor Authentication and Calibration Performance in the Presence of Noise System Intellectual Property Protection Reads and Writes Over 2.8V to 5.25V Voltage Range from -40C to +85C Typical Operating Circuit 6-Lead TSOC and TDFN or 2-Lead TO-92 and SFN Packages V CC Ordering Information R PUP IO PART TEMP RANGE PIN-PACKAGE DS28E01-100+ -40C to +85C 2 TO-92 DS28E01-100 C DS28E01P-100+ -40C to +85C 6 TSOC DS28E01P-100+T -40C to +85C 6 TSOC DS28E01G-100+T&R -40C to +85C 2 SFN GND 6 TDFN-EP* DS28E01Q-100+T&R -40C to +85C (2.5k pcs) +Denotes a lead(Pb)-free/RoHS-compliant package. T and T&R = Tape and reel. *EP = Exposed pad. Pin Configurations appear at end of data sheet. Note to readers: This document is an abridged version of the full data sheet. To request the full data sheet, go to www.maximintegrated.com/DS28E01 and click on Request Full Data Sheet. 1-Wire is a registered trademark of Maxim Integrated Products, Inc. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maximintegrated.com. 219-0007 Rev 9 7/20ABRIDGED DATA SHEET DS28E01-100 1Kb Protected 1-Wire EEPROM with SHA-1 Engine ABSOLUTE MAXIMUM RATINGS IO Voltage Range to GND .......................................-0.5V to +6V Soldering Temperature (reflow) IO Sink Current ...................................................................20mA TSOC, TDFN .................................................................+260C Operating Temperature Range ...........................-40C to +85C TO-92 ............................................................................+250C SFN.......Refer to Application Note 4132: Attachment Methods Junction Temperature......................................................+150C for the Electro-Mechanical SFN Package. Storage Temperature Range .............................-55C to +125C Lead Temperature (TSOC, TO-92, TDFN only soldering, 10s) ..............................................................+300C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (T = -40C to +85C.) (Note 1) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS IO PIN: GENERAL DATA 1-Wire Pullup Voltage V (Note 2) 2.8 5.25 V PUP 1-Wire Pullup Resistance R (Notes 2, 3) 0.3 2.2 k PUP Input Capacitance C (Notes 4, 5) 1000 pF IO Input Load Current I IO pin at V 0.05 6.7 A L PUP V - PUP High-to-Low Switching Threshold V (Notes 5, 6, 7) 0.46 V TL 1.8 Input Low Voltage V (Notes 2, 8) 0.5 V IL V - PUP Low-to-High Switching Threshold V (Notes 5, 6, 9) 1.0 V TH 1.1 Switching Hysteresis V (Notes 5, 6, 10) 0.21 1.70 V HY Output Low Voltage V At 4mA current load (Note 11) 0.4 V OL Standard speed, R = 2.2k 5 Recovery Time PUP t s REC (Notes 2,12) Overdrive speed, R = 2.2k 5 PUP Standard speed 0.5 5.0 Rising-Edge Hold-Off Time t s REH (Notes 5, 13) Overdrive speed Not applicable (0) Standard speed 65 Time Slot Duration t s SLOT (Notes 2, 14) Overdrive speed 11 IO PIN: 1-Wire RESET, PRESENCE-DETECT CYCLE Standard speed 480 640 Reset Low Time (Note 2) t s RSTL Overdrive speed 48 80 Standard speed 15 60 Presence-Detect High Time t s PDH Overdrive speed 2 6 Standard speed 60 240 Presence-Detect Low Time t s PDL Overdrive speed 8 24 Standard speed 60 75 Presence-Detect Sample Time t s MSP (Notes 2, 15) Overdrive speed 6 10 2 Maxim Integrated