Analog Devices Inc./Maxim Integrated

As Internet connectivity and greater intelligence get integrated into more products, these products can also boast more potential points of vulnerability if left unprotected. Embedded security technologies, such as security supervisors, can safeguard these designs from hacking, counterfeiting, and other security breaches faced by Internet of things (IoT) designs. The MAX36010/MAX36011 are low-power security supervisors designed for fiscal memory, internet security, and IP protection applications that require certificate-based or other public key cryptography schemes. The devices also incorporate sophisticated security mechanisms to protect sensitive information in secure memory, two pairs of external sensor input, and environmental monitors (temperature and voltage sensors) that erase the secure memory when an attack condition is detected.One SPI, one I²C, and one UART interfaces are provided for secure, flexible communication to external system nodes. Device control and configuration are performed through a SPI, I²C, or UART interface.The MAX36010/MAX36011 include on-chip 1KB secure memory that is always protected by dynamic sensors and environmental sensors. When there is a tamper event, the 1KB secure memory is erased in less than 1μs after the DRS has been completed. Tamper source and time of tamper is recorded in battery-backed registers. The MAX36010/MAX36011 enter a reset state until the tamper source is removed.A real-time clock (RTC) is used to keep the current date and time. It is also useful when a tamper event happens, the tamper time is recorded and stored in a battery-backed register. The RTC has an alarm function. An alarm can be set 12 days in advance. The application can use the alarm to trigger the host processor on a daily basis for regular status monitoring and time adjusting between the host and MAX36010/MAX36011. When an alarm event happens, an output pulse is sent to the ALM pin. The RTC comes with a trim function. Certain number of clocks could be added or subtracted from RTC counter so as to compensate the time drift caused by temperature change on external crystal.The MAX36010/MAX36011 support high-speed encryption with hardware accelerators for AES, RSA, ECDSA, SHA-1, SHA-224, SHA-256, DES, and 3DES. The hardware accelerator has an individual clock that is generated from a 65MHz internal ring oscillator. The MAX36010/MAX36011 act as coprocessors to encrypt data for the host processor. A true hardware random number generator is included for key generation and challenge generation. The MAX36010/MAX36011 provide side-channel attack countermeasures along with cryptography function. The MAX36010 supports symmetric key generation for AES and DES/3DES; whereas the MAX36011 supports both symmetric and asymmetric key generation for AES, DES/3DES, RSA, and ECDSA.Sensitive information can be stored in the 1KB NV SRAM. Sensitive data transfer is in cipher text mode. Data in NVSRAM is encrypted by an AES-128 key before data is sent over SPI, I²C, or UART. The host processor must decrypt the data with the corresponding AES-128 key to retrieve useful information.The device is powered by a 3.3V supply. A battery connection is provided for applications that want to maintain secure memory data for years without draining the main power supply. In battery-backed mode, the secure memory and security sensors consume less than 750nA (typ).ApplicationsElectronic Signature GenerationGaming MachinesInternet SecurityIP ProtectionPoints of SalesSecure Access ControlSecurity and Banking TokensSmart Control Systems for Home AutomationSmart Factory for Industrial 4.0Smart Grid Security

The MAX361/MAX362 are precision, quad, single-pole single-throw (SPST) analog switches. The MAX361 has four normally closed (NC) switches, and the MAX362 has four normally open (NO) switches. Both parts offer low channel on resistance (less than 85Ω), guaranteed to match within 3Ω between channels and to remain flat over the analog signal range (Δ9Ω max). Both parts also offer low leakage (less than 500pA at +25°C and less than 4nA at +85°C) and fast switching (turn-on time less than 250ns and turn-off time less than 170ns).The MAX361/MAX362 are fabricated with Maxim's new improved 44V silicon-gate process. Design improvements guarantee extremely low charge injection (10pC), low power consumption (35µW), and electrostatic discharge (ESD) greater than 2000V. The 44V maximum breakdown voltage allows rail-to-rail analog signal handling capability.These monolithic switches operate with a single positive supply (+10V to +30V) or with split supplies (±4.5V to ±20V) while retaining CMOS-logic input compatibility and fast switching. CMOS inputs provide reduced input loading.ApplicationsBattery-Powered ApplicationsCommunication SystemsGuidance and Control SystemsHeads-Up DisplaysPBX, PABXSample-and-Hold CircuitsTest Equipment

As Internet connectivity and greater intelligence get integrated into more products, these products can also boast more potential points of vulnerability if left unprotected. Embedded security technologies, such as security supervisors, can safeguard these designs from hacking, counterfeiting, and other security breaches faced by Internet of things (IoT) designs. The MAX36210 is a low-power security supervisor designed for fiscal memory, internet security and IP protection applications that require certificate-based or other public key cryptography schemes. The device also incorporates a sophisticated security mechanism to protect sensitive information in secure memory; two pairs of external sensor input and environmental monitors (temperature, voltage, and die shield sensors) erase the on-chip secure memory when an attack condition is detected.SPI, I²C, and UART interfaces (one each) are provided for secure, flexible communication to external system nodes. Device control and configuration are performed through an SPI, I²C, or UART interface.The MAX36210 includes 1KB of battery-backed nonvolatile SRAM that is always protected by dynamic sensors and environmental sensors. This memory is provided for secure data storage where data is automatically encrypted/decrypted by a AES-256 master key upon access. When there is a tamper event, it causes the device to instantly wipe the AES-256 master key as well as other sensitive contents. Tamper source and time of tamper are recorded in battery-backed registers. In addition, the MAX36210 enters into a reset state until the source of the tamper is removed. With the combination of the above features and tamper detection circuit, the MAX36210 supports active tamper resistance, which is required by FIPS140 and PCI standards.The MAX36210 also includes 4KB of flash for storing less critical information that the content needs to remain intact upon a tamper attack.Sensitive data (such as secret keys and private keys) transfer between the MAX36210 and a host processor is protected by a AES-128 root key. Sensitive data in NVSRAM or flash is encrypted by the AES-128 root key before data is sent over SPI, I²C, or UART. The host processor must decrypt the data with the corresponding AES-128 root key to retrieve useful information.The communication link between the MAX36210 and a host processor can also be secured by using an integrated authentication protocol as an additional layer of security to ensure the MAX36210 responds only to an authenticated device. Authentication is optional, but once it is enabled, it cannot be disabled.A true random number generator (TRNG) is included for key generation and challenge generation. An SP800-90A compliant process is applied on the TRNG output.A real-time clock (RTC) records the current date and time. When a tamper event occurs, the tamper time is read from the RTC and stored in a battery-backed register. The RTC has an alarm function. An alarm can be set 12 days in advance. Application could use the alarm to trigger the host processor on a daily-basis for regular checkups, status monitoring and time adjustment between the host processor and the MAX36210. When an alarm event occurs, an output pulse is sent to the ALM pin for external processing. The RTC comes with a trim function whereby clock cycles can be added or subtracted from the RTC counter for any time drift compensations required, such as when the external crystal is exposed to significant temperature changes.The MAX36210 supports high-speed hardware accelerators for AES, DES, RSA, ECDSA, and SHA. The device acts as a coprocessor to perform encryption, decryption, signature generation and signature verification operations. To prevent cryptographic key hacking, side channel attack countermeasures are built into the device.The device is powered by a 3.3V voltage supply. A battery connection is provided for applications that want to maintain secure memory data for years without draining the main power supply. In battery-backed mode, the secure memory and security sensors consume 2.9µA (typ).ApplicationsElectronic Signature GenerationGaming MachinesInternet SecurityIP ProtectionPoint of SalesSecure Access ControlSecurity and Banking TokensSmart Control Systems for Home AutomationSmart Factory for Industrial 4.0Smart Grid Security

The MAX364/MAX365 are precision, quad, single-pole single-throw (SPST) analog switches. The MAX364 has four normally closed (NC), and the MAX365 has four normally open (NO) switches. Both parts offer low-channel on-resistance (less than 85Ω), guaranteed to match within 2Ω between channels and to remain flat over the analog signal range (∆9Ω max). Both parts also offer low leakage (less than 500pA at +25°C and less than 4nA at +85°C) and fast switching (turn-on time less than 250ns and turn-off time less than 170ns).The MAX364/MAX365 are fabricated with Maxim's new improved 44V silicon-gate process. Design improvements guarantee extremely low charge injection (10pC), low power consumption (35µW), and electrostatic discharge (ESD) greater than 2000V. The 44V maximum breakdown voltage allows rail-to-rail analog signal handling capability.These monolithic switches operate with a single positive supply (+10V to +30V) or with split supplies (±4.5V to ±20V) while retaining CMOS-logic input compatibility and fast switching. CMOS inputs provide reduced input loading.ApplicationsBattery-Operated SystemsCommunication SystemsGuidance and Control SystemsHeads-Up DisplaysMilitary RadiosPBX, PABXSample-and-Hold CircuitsTest Equipment