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32bit MCU line targets network-enabled appliances

Posted: 18 Mar 2005 ?? ?Print Version ?Bookmark and Share

Keywords:mb9140x? microcontroller? mcu? fujitsu microelectronics america? gma?

The MB9140x series of 32bit microcontrollers (MCUs) from Fujitsu Microelectronics America Inc. (FMA) pack a full range of networking security features, on-board ROM and RAM, and support for IPv6, the next-generation Internet protocol. Each device in the series incorporates all the basic functions needed to serve as a controller for an appliance, including a 32bit risc cpu, an FR core, timer, interrupt controller and UART.

Among the features of the new MB91403 is the on-chip encryption circuitry that supports the Advanced Data Encryption Standard (AES), Data Encryption Standard (DES), 3DES, and other established cryptographic systems. The encryption circuits are claimed to be 150 to 200 times faster than software-based encryption, and are complemented by authentication circuitry. The units also support the MD5 and SHAR1 authentication standards, key exchange methods DH 1/DH 2, and the Internet Key Exchange (IKE) protocol with hardware engine.

The MCU series also includes the MB91402, which is available for customers whose designs do not require security features. The series also contains the MB91401, a 32bit network system MCU that supports IPv6. All the new MCUs can operate as standalone systems or as companion chips for existing designs.

The MB9140x family incorporates 8KB of high-speed data RAM, 4KB instruction cache, along with 256KB ROM and 64KB RAM, which reduce the need for external memory chips, resulting in lower costs and more compact circuit boards. If more RAM is needed, SDRAMs can be added externally in applications where the device can serve as a buffer for a high-data-traffic application, or to cache data that is transmitted over the network.

The MB91403 supports IPv6 over Ethernet running at either 10Mbps or 100Mbps, enabling Internet-capable appliances to connect to the network using individual IP addresses. The chip's hardware-based layer-filtering functionality will admit only the appropriate packets, so the communication process runs effectively via an appliance's CPU. The MB91403 also supports IPv4.

The MB91401, MB91402 and MB91403 are manufactured using Fujitsu's 0.18?m CMOS process, and packaged in 144-pin LQFPs. Pricing for the MB91401 begins at $15.78, for the MB91402 at $9.92, and for the MB91403 at $12.86 each in 1,000-unit quantities.

- Marty Gold


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