ABRIDGED DATA SHEET DS24L65 DeepCover Secure Authenticator with SHA-256 Coprocessor and 1-Wire Master Function General Description Features DeepCover embedded security solutions cloak sensitive S SHA-256 Engine to Operate a Symmetric-Key- data under multiple layers of advanced physical security to Based Bidirectional Secure Authentication Model provide the most secure key storage possible. S Two 32-Byte Pages of User EEPROM with Multiple The DeepCover Secure Authenticator (DS24L65) is a SHA- Programmable Protection Options 256 coprocessor with built-in 1-Wire master that provides S 1-Wire Master Port with Selectable Active or the SHA-256 and memory functionality required by a host Passive 1-Wire Pullup system to communicate with and operate a 1-Wire SHA-256 S Strong 1-Wire Pullup Provided by an Internal Low- slave. In addition, it performs protocol conversion between Impedance Signal Path 2 the I C master and any attached 1-Wire SHA-256 slaves. For S 1-Wire Port Can Be Powered Down Under 1-Wire line driving, internal user-adjustable timers relieve the system host processor from generating time-critical 1-Wire Software Control waveforms, supporting both standard and overdrive 1-Wire 2 S I C Operating (Pullup) Voltage: 1.8V 5% communication speeds. The 1-Wire line can be powered S 8kV ESD Protection on IO to GND (JESD22-A114 down under software control. Strong pullup features support HBM, Typical) 1-Wire power delivery to 1-Wire devices such as EEPROMs. S Operating Range: 1.8V 5%, -40NC to +85NC When not in use, the DS24L65 can be put in sleep mode where power consumption is minimal. S 6-Pin TSOC Package Applications Ordering Information appears at end of data sheet. Authentication of Consumables Secure Feature Control Typical Application Circuit 1.8V R P R = 820 P V CC 2 MAXIMUM I C BUS CAPACITANCE 400pF SDA 2 (I C PORT) SCL DS24L65 C 1-Wire LINE SLPZ IO DS28EL15 DS28EL22 DS28EL25 DeepCover and 1-Wire are registered trademarks of Maxim Integrated Products, Inc. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrateds website at www.maximintegrated.com. 219-0026 Rev 1 9/13ABRIDGED DATA SHEET DS24L65 DeepCover Secure Authenticator with SHA-256 Coprocessor and 1-Wire Master Function ABSOLUTE MAXIMUM RATINGS Voltage Range on Any Pin Relative to GND ........-0.5V to +4.0V Storage Temperature Range ............................ -55NC to +125NC Maximum Current into Any Pin ...........................................20mA Lead Temperature (soldering, 10s) ................................+300NC Operating Temperature Range ......................... -40NC to +85NC Soldering Temperature (reflow) .....................................+260NC Junction Temperature .....................................................+150NC Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional opera- tion 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 = -40NC to +85NC, unless otherwise noted.) (Note 1) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage V 1.71 1.8 1.89 V CC (Note 2) 750 Supply Current I FA CC Sleep mode (SLPZ pin low), V = 1.89V 0.5 1.0 CC Power-On Reset Trip Point V (Note 3) 1.0 1.4 V POR 0.6 O 1-Wire Input High V V IH1 V CC 0.2 O 1-Wire Input Low V V IL1 V CC Low range 375 500 775 1-Wire Weak Pullup Resistor R I WPU (Notes 3, 4) High range 650 1000 1350 1-Wire Output Low V V = 1.71V, 8mA sink current 0.25 OL1 CC Active Pullup On Threshold V (Note 3) 0.95 1.2 V IAPO 1-Wire time slot Equal to t REC0 Active Pullup On Time t 1-Wire reset standard speed 2.375 2.5 2.625 Fs APU (Notes 3, 5) 1-Wire reset overdrive speed 0.475 0.5 0.525 Active Pullup Impedance R V = 1.71V, 4mA load (Note 3) 60 I APU CC Standard 0.25 2 1-Wire Output Fall Time (Note 3) t Fs F Overdrive 0.05 0.45 IO PIN: 1-Wire TIMING (Note 6) Standard See Reset Low Time t -5% +9% Fs RSTL Table 6 Overdrive Reset High Time t Standard and overdrive Equal to t Fs RSTH RSTL Standard See Presence-Detect Sample Time t -5% +9% Fs MSP Table 6 Overdrive Standard 7.6 8 8.72 Sampling for Short and Interrupt t Fs SI Overdrive 1.9 2 2.18 Standard 7.6 8 8.72 Write-1/Read Low Time t Fs W1L See Overdrive -5% +9% Table 6 Maxim Integrated 2