MC9S08LH64CLH

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MC9S08LH64CLH application field and working principle

The Freescale MC9S08LH64CLH is a microcontroller that is part of the 8-bit S08 family. This microcontroller adds the latest HCS08 CPU core specifically designed for cost sensitive applications, thus providing a low cost solution for a given application.

The HCS08 core of the MC9S08LH64CLH has a wide architecture that ranges from 8-bit single-cycle instructions up to 21-bit single-cycle operations. It also provides a multiply accumulate rapid execution, allowing developers to work with higher speed. This microcontroller works at speeds up to 40 MHz allowing it to operate quickly enabling application compromise time necessaries.

The MC9S08LH64CLH implements the HCS08 CPU architecture, however it also provides two levels of supervisory function with interrupts, the Supervisor Call (SVC) and the System Management Mode (SMM). These two functions allow developers to configure I/O ports without affecting the rest of the program. This microcontroller also provides a 64KB Flash block plus a 2KB RAM with a built-in BSD-hardware breakpoint.

Applications

The MC9S08LH64CLH has a vast array of applications, such as non-critical parts of industrial automation, low-cost smart appliances, low cost radios, and low-cost communication systems (e.g. Zigbee and Bluetooth LE applications). It is also used in many consumer products such as remote control toys and white goods, such as washing machines, clothes dryers etc.

Working Principle

The MC9S08LH64CLH works based on the HCS08 CPU architecture. This operates with 8-bit operations and a wide architecture. This microcontroller can be operated by several clock frequencies, such as 8 MHz and 40 MHz. The 8 MHz frequency is used to reduce the power consumption of the device, while the 40 MHz frequency is used to obtain a higher performance.

The MC9S08LH64CLH has an integrated RAM of 2 kB and a flash memory of 64kB. It also has a BSD-hardware breakpoint designed to abort operations when a specific point in the code is reached. This microcontroller also provides two levels of supervisory functions such as the Supervisor Call (SVC) and the System Management Mode (SMM).

This microcontroller also provides several peripherals, such as a Digital‑to‑Analog converter (DAC), a UART, an SPI module, an IIC module, an LCD controller, a direct memory access (DMA) controller, a real-time clock (RTC), a 10/12‑bit analog-digital converter (ADC) module, an Enhanced Capture Timer (ECT), a serial communications interface (SCI), two low-power timers (LPT), and a 5-channel timer (TPM).

Conclusion

The MC9S08LH64CLH is a low cost microcontroller from the 8-bit S08 family. This microcontroller has 8-bit operations, a wide architecture, 64kB Flash block, 2KB RAM and a BSD-hardware breakpoint. This microcontroller can operate at speeds up to 40 MHz and provides a plethora of peripherals. It is ideally suited for consumer applications such as remote control toys and white goods, and can be used in the non-critical parts of industrial automation, low-cost smart appliances, low cost radios, and low-cost communication systems (e.g. Zigbee and Bluetooth LE applications).

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