NXP Semiconductors MC9S08AW16CFGE

Overview

MC9S08AW16CFGE from NXP Semiconductors (formerly Freescale) 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 (1×2-channel, 1×6-channel), and KBI for embedded control in automotive body electronics and industrial sensors.

For engineers reviewing the MC9S08AW16CFGE datasheet, MC9S08AW16CFGE pinout, MC9S08AW16CFGE application, or MC9S08AW16CFGE equivalent, key selection criteria include QFN-48 package compatibility, single-wire BDM debug support, COP watchdog, low-voltage detect with interrupt/reset, and Flash block protection for secure firmware updates.

Technical Context

The MC9S08AW16CFGE implements the S08CPUV2 core with HC08 instruction set extension (including BGND), supporting 40-MHz CPU clock and 20-MHz internal bus. Its Internal Clock Generator (S08ICGV4) provides multiple modes - FEI, FEE, FBE - with NVM-trimmed internal reference and external crystal/resonator support up to 4 MHz.

Peripherals are memory-mapped and synchronized to the bus clock: the 10-bit ADC supports automatic compare and temperature sensor input; dual SCI modules each support 13-bit break detection; and TPM modules offer edge-aligned PWM, input capture, output compare, and buffered centered PWM (CPWM) on all channels.

Key Specifications

Pinout & Package

MC9S08AW16CFGE is housed in a 48-pin low-profile quad flat no-lead (QFN) package with exposed thermal pad (98ASA00466D), compatible with copper-wire interconnect process per Freescale QFN Addendum Rev. 0 (2014).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08AW16CFGE, S9KEAZ128AMLH offers greater compute headroom and modern peripherals but demands architecture rework, while MC9S08AC16CFGE retains full software compatibility at the cost of I/O and timer scalability.

Availability

MC9S08AW16CFGE is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, and smart appliance motor controllers requiring stable component supply across extended production lifecycles.

Supply support for MC9S08AW16CFGE 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

NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications.

The MC9S08AW16CFGE belongs to the legacy HCS08 microcontroller family designed for cost-sensitive, low-power embedded control in harsh environments - particularly where long-term availability, robust debug, and analog integration are essential.

FAQ

What is the maximum bus frequency supported by the MC9S08AW16CFGE?

The MC9S08AW16CFGE supports a maximum internal bus frequency of 20 MHz. This is achieved using the internal clock generator's FLL-engaged modes (FEI or FEE) with either an external crystal (up to 4 MHz) or the trimmed internal reference. The 20 MHz bus clock directly governs peripheral timing, including ADC conversion rate, TPM PWM resolution, and SCI baud generation - making it suitable for real-time control loops with sub-50 μs response requirements. The MC9S08AW16CFGE does not support overclocking beyond this specification.

Does the MC9S08AW16CFGE include an internal temperature sensor?

Yes, the MC9S08AW16CFGE integrates an internal temperature sensor connected to channel AN15 of its 16-channel 10-bit ADC. This sensor is factory-calibrated and documented in the MC9S08AW60 data sheet (Rev 2, Section 14.3.2), which covers the entire AW-series including MC9S08AW16CFGE. When enabled, it provides direct die-temperature readings with ±3°C accuracy over –40°C to +105°C, eliminating the need for external thermal monitoring components in space-constrained designs.

What debug interface does the MC9S08AW16CFGE support?

The MC9S08AW16CFGE supports single-wire Background Debug Mode (BDM) via the BKGD/MS pin. This interface enables full in-circuit debugging - including breakpoint setting, memory inspection, register read/write, and real-time trace - using standard Freescale/NXP BDM tools such as the DEMO9S08AW60 evaluation board or standalone POD-based debuggers. The MC9S08AW16CFGE implements the on-chip debug module with two additional breakpoints beyond the primary BDM breakpoint, and supports bus capture for up to ~50 instructions before/after trigger events.

Is the MC9S08AW16CFGE pin-compatible with other AW-series MCUs like the MC9S08AW60?

No, the MC9S08AW16CFGE is not pin-compatible with MC9S08AW60 despite sharing the same 48-pin QFN package option. The MC9S08AW60 offers up to 54 GPIOs across six ports (A–G), while the MC9S08AW16CFGE maps only 40 of those pins - with differing peripheral assignments (e.g., TPM channel allocation, ADC channel routing, and SCI signal placement). Pinouts are defined per device in Chapter 2 of the MC9S08AW60 data sheet, and the MC9S08AW16CFGE uses a subset optimized for its 16 KB FLASH configuration. Board layout must be verified against the specific MC9S08AW16CFGE pin assignment table.

What power-saving modes are available on the MC9S08AW16CFGE?

The MC9S08AW16CFGE supports Wait mode plus two Stop modes: Stop2 and Stop3. In Stop2, the COP watchdog remains active and LVD can generate interrupts; in Stop3, both COP and LVD are disabled to achieve minimum current draw (<1 μA typical). All modes retain RAM and register contents, and wake-up is supported via RESET, IRQ, BKGD, or peripheral interrupts (e.g., TPM overflow, ADC completion). These modes are controlled via the SPMSC1 and SPMSC2 registers and are fully documented in Chapter 3 of the MC9S08AW60 data sheet, applicable to MC9S08AW16CFGE.