ABRIDGED DATA SHEET DS2465 DeepCover Secure Authenticator with SHA-256 Coprocessor and 1-Wire Master Function General Description Features DeepCover embedded security solutions cloak sensi- S SHA-256 Engine to Operate a Symmetric-Key- tive data under multiple layers of advanced physical Based Bidirectional Secure Authentication Model security to provide the most secure key storage possible. S Two 32-Byte Pages of User EEPROM with Multiple The DeepCover Secure Authenticator (DS2465) is a Programmable Protection Options SHA-256 coprocessor with built-in 1-Wire master that S 1-Wire Master Port with Selectable Active or provides the SHA-256 and memory functionality required Passive 1-Wire Pullup by a host system to communicate with and operate a S Strong 1-Wire Pullup Provided by an Internal Low- 1-Wire SHA-256 slave. In addition, it performs protocol Impedance Signal Path 2 conversion between the I C master and any attached S 1-Wire Port Can Be Powered Down Under 1-Wire SHA-256 slaves. For 1-Wire line driving, internal user-adjustable timers relieve the system host processor Software Control from generating time-critical 1-Wire waveforms, support- 2 S I C Operating (Pullup) Voltage: 3.3V 10% ing both standard and overdrive 1-Wire communication S 8kV ESD Protection on IO to GND (JESD22-A114 speeds. The 1-Wire line can be powered down under HBM, Typical) software control. Strong pullup features support 1-Wire S Operating Range: 3.3V 10%, -40NC to +85NC power delivery to 1-Wire devices such as EEPROMs. When not in use, the DS2465 can be put in sleep mode S 6-Pin TSOC Package where power consumption is minimal. Applications Ordering Information appears at end of data sheet. Authentication of Consumables Secure Feature Control Typical Application Circuit 3V R P R = 1.1k P V CC 2 MAXIMUM I C BUS CAPACITANCE 320pF SDA 2 (I C PORT) SCL DS2465 C 1-Wire LINE SLPZ IO DS28E15 DS28E15 DS28E15 1 2 n DeepCover and 1-Wire are registered trademarks of Maxim Integrated Products, Inc. For pricing, delivery, and ordering information, please contact Maxim Direct at 219-0017 Rev 3 9/13 1-888-629-4642, or visit Maxim Integrateds website at www.maximintegrated.com.ABRIDGED DATA SHEET DS2465 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 2.97 3.3 3.63 V CC (Note 2) 750 Supply Current I FA CC Sleep mode (SLPZ pin low), V = 3.63V 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 375 500 750 1-Wire Weak Pullup Resistor R I WPU (Notes 3, 4) High range 750 1000 1350 1-Wire Output Low V V = 2.97V, 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 = 2.97V, 4mA load (Note 3) 60 I APU CC Standard 0.25 1 1-Wire Output Fall Time (Note 3) t Fs F Overdrive 0.05 0.2 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