W79E659A40FL

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The W79E659A40FL microcontroller is widely used in embedded applications and is a powerful example of recent advancements in embedded processing architecture. Developed by Winbond Electronics Corporation, the W79E659A40FL is a 32-bit processor that combines a Harvard Architecture with a RISC-like instruction set. At its heart lies a 32-bit ARM7TDMI-S core, capable of operating at up to 80 MHz and supporting a wide range of on-chip peripherals. In addition, the microcontroller also has 256 Kbytes of dual-ported internal SRAM, 16 Kbytes of EEPROM, 32 Kbytes of ROM and 16 channels of general-purpose I/Os.

Application Field

The W79E659A40FL microcontroller is ideal for applications where high performance, low cost and low power consumption are required. It is especially suited for real-time systems, for example in the automotive, consumer and industrial markets. The microcontroller can be used for a range of activities from motor control, waveform manipulation and audio processing, to communications, data acquisition, medical and gaming applications. The microcontroller’s extensive range of peripherals also allows it to be used in security and access control, networking and metering, while its connectivity components make integration into other systems much easier.

Working Principle

The W79E659A40FL is based on a factored, Harvard architecture design that makes use of a modified ARM7TDMI-S core and provides a robust, unified 32-bit instruction set. It also provides several reliable bus resources, including a local bus, multi-layer interconnect and a flexible, integrated address space. This enables the CPU to operate in a variety of modes, including a real-time constraints operation mode, and allows the user to define different interrupt priorities.

The microcontroller also incorporates a memory protection unit (MPU) to protect internal and external memories from unauthorized access. The MPU guarantees that only authorized access is permitted to the memory as it supports core-local memory operations and interrupts, and can be used to divide the memory into a number of isolated regions. Additionally, the microcontroller features integrated debug peripherals, including an on-chip ROM emulator and breakpoint logic, and supports a wide range of communications interfaces including USB, UART, SPI, I2C and CAN.

Power consumption is also a very important consideration with microcontroller- based systems and the W79E659A40FL provides a low voltage core in order to reduce power draw during operation. As a result, the microcontroller can operate at up to 25 MHz (at 1.8V) and is designed to meet the low power requirements of battery operated and low-cost systems.

The W79E659A40FL is an extremely versatile microcontroller, with an extensive range of integrated peripherals, high-performance hardware architecture, low power consumption and a large memory. This highly reliable and feature rich microcontroller is well suited to a wide range of embedded applications, from automotive control systems to consumer devices.

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