NXP Semiconductors MC9S08AW16MFDE

Overview

MC9S08AW16MFDE from Freescale Semiconductor is an 8-bit HCS08 microcontroller with 16 KB on-chip FLASH, 1 KB RAM, and a 20 MHz bus frequency. It integrates dual SCI, SPI, I²C, 16-channel 10-bit ADC, two 16-bit TPM modules (2- and 6-channel), KBI, and single-wire background debug interface - deployed in automotive body control modules and industrial sensor nodes requiring compact footprint and low-power operation.

For engineers reviewing the MC9S08AW16MFDE datasheet, MC9S08AW16MFDE pinout, MC9S08AW16MFDE application, or MC9S08AW16MFDE equivalent, key selection criteria include QFN-48 package compatibility, COP watchdog support, LVD reset/interrupt capability, and real-time ICE debugging with bus capture buffer.

Technical Context

The MC9S08AW16MFDE implements the S08CPUV2 core with HC08 instruction set extension including BGND, operating at up to 40 MHz CPU clock and 20 MHz internal bus frequency. Its Internal Clock Generator (S08ICGV4) supports multiple modes - FEI, FEE, FBE, and SCM - with NVM-trimmed internal reference and external crystal/resonator options.

Peripheral integration includes two independent SCI modules with 13-bit break support, a full-duplex SPI, I²C compliant with 100 kbps standard-mode timing, and dual Timer/PWM (TPM) modules offering input capture, output compare, edge-aligned and centered PWM on all channels - all accessible via software-configurable I/O ports with slew rate, drive strength, and pull-up controls.

Key Specifications

Pinout & Package

MC9S08AW16MFDE is housed in a 48-pin QFN package (case outline 98ASA00466D), measuring 7 mm × 7 mm × 0.85 mm with 0.5 mm pitch and thermally enhanced exposed pad. The package supports copper-wire bonding per Freescale QFN migration addendum Rev. 0 (July 2014).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit microcontroller applications.

Compared with MC9S08AW16MFDE, MC9S08AC16CFUE offers identical peripheral set but older packaging and no temperature sensor, while S9KEAZ128AMLH delivers significantly higher compute throughput and memory at the cost of increased power, size, and software migration effort.

Availability

MC9S08AW16MFDE is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, home appliance control panels, and medical handheld diagnostics requiring stable component supply across extended product lifecycles.

Supply support for MC9S08AW16MFDE includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Freescale Semiconductor (now part of NXP Semiconductors) is a fabless semiconductor company specializing in microcontrollers, analog, and RF solutions for automotive, industrial, and consumer markets.

The HCS08 family - including MC9S08AW16MFDE - was designed for cost-sensitive, low-power embedded control applications demanding high integration, robust debug capability, and long-term manufacturability in automotive and industrial environments.

FAQ

What is the maximum bus frequency supported by the MC9S08AW16MFDE?

The MC9S08AW16MFDE supports a maximum bus frequency of 20 MHz, which governs peripheral timing, interrupt response, and instruction execution speed. This value is derived from the internal clock generator's FLL-engaged modes and is confirmed in the MC9S08AW60 data sheet Rev 2 (December 2006), which covers the MC9S08AW16 series. The 20 MHz bus clock ensures deterministic timing for SCI, SPI, I²C, and TPM modules in the MC9S08AW16MFDE.

Does the MC9S08AW16MFDE include an integrated temperature sensor?

Yes, the MC9S08AW16MFDE includes an integrated temperature sensor connected to the ADC subsystem, as documented in the MC9S08AW60 data sheet Rev 2 (December 2006) under Section 14 "Analog-to-Digital Converter". This sensor is accessible via dedicated ADC channel and calibrated using factory-trimmed NVM values - enabling accurate ambient temperature monitoring without external components in the MC9S08AW16MFDE.

What debug interface does the MC9S08AW16MFDE support?

The MC9S08AW16MFDE supports a single-wire background debug mode (BDM) interface via the BKGD/MS pin, enabling in-circuit programming and real-time emulation without dedicated JTAG pins. It provides breakpoint capability (one active + two in on-chip debug module) and full ICE functionality with bus capture buffer - all detailed in the MC9S08AW60 data sheet Rev 2. This debug architecture is integral to the MC9S08AW16MFDE's development workflow.

Is the MC9S08AW16MFDE pin-compatible with other AW-series devices like MC9S08AW60?

No, the MC9S08AW16MFDE is not pin-compatible with MC9S08AW60 despite sharing the same QFN-48 package outline (98ASA00466D). Pin assignments differ due to reduced peripheral count and memory size - e.g., fewer ADC channels and TPM resources - as specified in Chapter 2 "Pins and Connections" of the MC9S08AW60 data sheet Rev 2. Layout reuse requires verification against the MC9S08AW16MFDE-specific pin map.

What power-saving modes are available on the MC9S08AW16MFDE?

The MC9S08AW16MFDE supports Wait mode plus two Stop modes (Stop2 and Stop3), each with configurable peripheral retention and wake sources. Stop3 achieves the lowest current consumption with selected modules disabled and LVD active - verified in Appendix A "Electrical Characteristics" of the MC9S08AW60 data sheet Rev 2. These modes are essential for extending battery life in portable applications using the MC9S08AW16MFDE.