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Freescale expands 8bit S08 MCU line

Posted: 04 Dec 2007 ?? ?Print Version ?Bookmark and Share

Keywords:8bit MCU? industrial control? flash memory?

Freescale Semiconductor Inc. has added 30 highly integrated MCUs to its 8bit S08 portfolio for embedded industrial control, consumer appliance and in-vehicle applications.

Eight MC9S08JM60 devices add higher performance and integration to Freescale's 8bit embedded USB portfolio. They feature a full-speed USB device controller that enables customers to upgrade and standardize serial communications quickly. Offering 24MHz bus frequency, up to 60KB of flash memory, and a 12-channel, 12bit ADC, the devices also include an integrated USB transceiver to help customers save cost, development time and board space by eliminating off-chip components.

The S08JM60 family includes system protection features such as lowVoltage detection and a computer operating properly (COP) module. These features make the USB devices ideal for low-end industrial control applications that require high reliability and connectivity, such as PC peripherals, building and lighting control systems, testing and measurement equipment, and medical monitoring devices.

Freescale also offers extensive USB application notes and a complimentary "USB-Lite" software stack by CMX. This easy-to-use USB software helps developers get their USB applications up and running in minutes. Source code for the USB stack is also available, enabling developers to easily modify the software for their application needs.

Featuring 12 devices, the MC9S08SH8/4 family brings increased flexibility and a wide breadth of package offerings to Freescale's 5V low-end 8bit MCU portfolio. These low-pin-count controllers feature a 20MHz internal clock source, include a useful ganged output capability that enables developers to achieve higher current drive by toggling multiple pins using one bit, analog capabilities, a comprehensive set of serial modules, an on-chip temperature sensor and robust memory options. They are ideal for general-purpose, tethered consumer and industrial applications in the 2.7V to 5.5V range.

Entry-level automotive MCUs
The S08SG family includes four 8bit MCUs designed for LIN slave, general market and space-constrained automotive applications. The core operates at up to 40MHz, stretching the boundaries of 8bit performance into the range of 16bit MCUs. They offer on-chip emulation/debug that helps reduce development time by enabling developers to make software changes in real-time. High level on-chip integration helps reduce development cost, saves board space and enhances system-level quality by eliminating the need for peripheral board components, such as external clock sources. Other notable features include low voltage inhibit circuits, voltage regulators, I/O multiplexers, watchdog circuits and ADCs.

Ideal peripherals for motor control
Integrating Freescale's industry-leading 0.25? flash technology, the MCUs in the MC9S08AC16 family offer an upward migration path to MC9S08AW-based applications requiring higher performance, enhanced peripherals, additional memory and improved system security. The MC9S08AC16 adds a third timer PWM module, giving designers added clocking flexibility. Improvements to the serial communications interface (SCI) satisfy the designer's need for integrated LIN functionality. The addition of a 1kHz oscillator to the COP/watchdog timer provides two additional timeout options, which help enhance system security.

Additional noteworthy features include enhanced low-voltage warning, two SCIs, a serial peripheral interface, an I?C, a 10bit ADC, and ten programmable 16bit timer channels with center-aligned pulse-width modulation (PWM) capability. The combination of high performance and on-chip integration makes the MC9S08AC16 family a perfect fit for many general embedded industrial control and consumer appliance applications.

These MCUs are available. The suggested resale prices for 10,000-unit quantities are S08JM60: $2.90; S08SH8/4: $0.96; S08SG8/4: $1.35; and S08AC16: $1.56

Development support
Freescale's CodeWarrior Development Studio provides an array of built-in features and utilities to help developers speed delivery of higher quality products to market. For example, the Processor Expert rapid application design tool included in the CodeWarrior tool suite helps simplify the migration process between other Freescale MCUs. To ease board design, Freescale offers full-featured evaluation and cost-effective demonstration kits for the JM, SH, SG and AC families. These kits are designed to help developers quickly learn about the MCUs and jumpstart application development. Development tools are available at suggested resale prices of JM60 demonstration board (DEMOJMSKT): $99; SH8 demonstration board (DEMO9S08SH8): $59; SG8 demonstration board (DEMO9S08SG8): $59; LIN daughter board (DEMO9S08LIN): $35; and AC16 demonstration board (DEMO9S08AC60): $85.

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