MB91F525KSBPMC1-GSE2

Program Memory Size:	832KB (832K x 8)
Supplier Device Package:	144-LQFP (20x20)
Package / Case:	144-LQFP
Operating Temperature:	-40°C ~ 105°C (TA)
Oscillator Type:	External
Data Converters:	A/D 48x12b, D/A 2x8b
Voltage - Supply (Vcc/Vdd):	2.7 V ~ 5.5 V
RAM Size:	102K x 8
EEPROM Size:	64K x 8
Program Memory Type:	FLASH
Series:	FR MB91520
Number of I/O:	120
Peripherals:	DMA, LVD, POR, PWM, WDT
Connectivity:	CANbus, CSIO, EBI/EMI, I²C, LINbus, SPI, UART/USART
Speed:	80MHz
Core Size:	32-Bit
Core Processor:	FR81S
Part Status:	Last Time Buy
Packaging:	Tray

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MB91F525KSBPMC1-GSE2: Application Field and Working Principle

The MB91F525KSBPMC1-GSE2 is a device from Renesas Electronics that combines security features and memory on a single chip. It is targeted at various application fields such as automotive, industrial and consumer solutions. The device is more specifically used as a security microcontroller for authentication and data encryption/decryption, and as a memory for secure storage and program code execution. This article will provide an overview of the MB91F525KSBPMC1-GSE2 device, examining its application fields and discussing its underlying working principle.

Application Field

The MB91F525KSBPMC1-GSE2 is a highly secure, low-power and low-cost solution with several applications in different areas. In the automotive sector, the device’s symmetric encryption engine is used to secure access to ECU data. In the industrial sector, it is used in equipment authentication and IP protection solutions, as well as in authentication of manufacturing processes. It is also used in consumer products such as mobile phones, smart cards and access control systems where it is used for secure authentication, data protection and code execution. In addition, its code memory is used in safety-critical applications such as the automotive and aerospace sectors, where its controllable execution time is an important feature.

Working Principle

The MB91F525KSBPMC1-GSE2 uses a symmetric encryption engine to secure sensitive data, providing strong authentication features for data and code execution. The symmetric encryption engine in the device is based on a cipher algorithm that processes data in blocks of 8 bytes, which is then encrypted or decrypted by the engine. The symmetric encryption engine employs a key that is stored in a secure portion of the device\'s memory. This key is used to authenticate both data and code access and can be programmed individually for each application.The MB91F525KSBPMC1-GSE2 also has a public-key encryption engine which is based on the RSA algorithm. This algorithm generates public and private keys for each application, ensuring that confidential data is encrypted in a secure manner. The public key encryption engine supports a wide range of RSA key sizes from 512 bits to 4096 bits.Furthermore, the MB91F525KSBPMC1-GSE2 is equipped with a code memory which is used to store and execute code in a secure environment. This code is executed in a controlled/deterministic manner, allowing for safety-critical applications. The code memory is protected by the symmetric encryption engine, ensuring that only authenticated code can be executed. This code memory is divided into two sections: the ROM section and the RAM section. The ROM section is used to store the device\'s bootloader code, while the RAM section is used to store data, code, and parameters.

Conclusion

The MB91F525KSBPMC1-GSE2 from Renesas Electronics is a device that combines security features and memory on a single chip. It specifically targets various application fields ranging from automotive, industrial to consumer solutions. Its symmetric encryption engine is used to secure data, while its public-key encryption engine is based on the RSA algorithm. In addition, the device comes with a code memory that is used to store and execute code in a secure and controlled manner. This provides the MB91F525KSBPMC1-GSE2 with a wide range of applications, making it a powerful, low-cost and secure device across different sectors.

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