NXP Semiconductors MC9S08QD2VSCR

Overview

MC9S08QD2VSCR from NXP (formerly Freescale) is an 8-bit HCS08 microcontroller designed for cost-sensitive embedded control in space-constrained applications. It features a 16 MHz CPU, 2048 bytes of on-chip Flash, 128 bytes of RAM, and integrated peripherals including a 4-channel 10-bit ADC, two timer/PWM modules (TIM1 and TIM2), and a 4-pin keyboard interrupt module - all in an 8-pin SOIC package rated for –40 °C to 125 °C operation.

For engineers reviewing the MC9S08QD2VSCR datasheet, MC9S08QD2VSCR pinout, MC9S08QD2VSCR application, or MC9S08QD2VSCR equivalent, this page delivers verified technical context, validated pin functions, real-world use cases, and confirmed alternative parts - all grounded in the official Rev. 7 (Aug 2022) MC9S08QD4 Series Data Sheet covering MC9S08QD2 devices.

Technical Context

The MC9S08QD2VSCR implements the HCS08 CPU core with HC08 instruction set extension (including BGND), background debugging support via single-wire BDM interface, and up to 32 interrupt/reset sources. Its Internal Clock Source (ICS) module integrates a frequency-locked loop (FLL) with precision-trimmed internal reference (±0.2% resolution, ±2% deviation over voltage/temperature).

System protection includes COP watchdog reset (with dedicated 32 kHz clock option), low-voltage detect (LVD) with reset/interrupt, illegal opcode/address detection, and flash block protection. Power management supports Wait mode plus three Stop modes (Stop1–Stop3), with peripheral retention and wake-up capability configurable per mode.

Key Specifications

Pinout & Package

MC9S08QD2VSCR is housed in an 8-pin SOIC package (3.9 mm × 4.9 mm, 1.27 mm pitch) compliant with RoHS and JEDEC MS-012 standards. Pin functions are validated per Section 2.1 ("Device Pin Assignment") and Table 2-1 of the MC9S08QD4 Series Data Sheet Rev. 7.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08QD2VSCR, MC9S08QD4VSCR offers scalable memory without layout impact, while S9S08QD2VTG provides automotive qualification at the cost of package incompatibility - making MC9S08QD2VSCR the optimal choice for cost-driven industrial and consumer control where AEC-Q100 is not mandated.

Availability

MC9S08QD2VSCR is available at Aetrix Electronics and suitable for motor control, smart power outlets, automotive cabin sensors, and industrial temperature monitors requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for MC9S08QD2VSCR 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, with roots in Freescale's embedded MCU heritage.

The MC9S08QD2VSCR belongs to the HCS08 QD-series - a family of ultra-compact, low-power 8-bit MCUs engineered for simple real-time control in space- and cost-constrained systems such as power supplies, appliance subsystems, and sensor nodes.

FAQ

What is the maximum operating frequency of the MC9S08QD2VSCR?

The MC9S08QD2VSCR features an HCS08 CPU core with a maximum bus frequency of 16 MHz, achieved via its integrated Internal Clock Source (ICS) with FLL. This frequency is sustained across the full industrial temperature range (–40 °C to 125 °C) and supply voltage (2.7–5.5 V), as specified in the Rev. 7 datasheet. The MC9S08QD2VSCR does not require an external crystal to reach this speed.

Does the MC9S08QD2VSCR support in-circuit debugging?

Yes, the MC9S08QD2VSCR includes a single-wire background debug module (BDM) accessible via the BKGD/MS pin. It supports breakpoint setting (one active breakpoint plus two more in the on-chip debug module), real-time register inspection, and flash programming - all without halting system operation. This capability is fully documented in Chapter 12 of the MC9S08QD4 Series Data Sheet.

What ADC features does the MC9S08QD2VSCR provide?

The MC9S08QD2VSCR integrates a 4-channel, 10-bit successive-approximation ADC with internal bandgap reference, dedicated temperature sensor channel, and hardware trigger capability from the Real-Time Interrupt (RTI) counter. It supports automatic compare functionality for threshold-based event generation - enabling autonomous sensor monitoring without CPU polling.

Is the MC9S08QD2VSCR pin-compatible with other QD-series MCUs?

Yes, the MC9S08QD2VSCR in 8-pin SOIC (VSCR) is pin-compatible with MC9S08QD4VSCR and S9S08QD2VSCR in the same package. All share identical pin assignments, electrical characteristics, and peripheral mapping - allowing direct substitution where memory or qualification requirements align. This compatibility is confirmed in Section 2.1 and Appendix B of the datasheet.

What power-saving modes are available on the MC9S08QD2VSCR?

The MC9S08QD2VSCR supports Wait mode plus three Stop modes (Stop1, Stop2, Stop3). Stop2 and Stop3 retain RAM and selected registers while reducing current draw to sub-1 µA. Wake-up is supported via IRQ, KBI, RTI, or LVD events. Mode selection and peripheral behavior in each state are defined in Chapter 3 of the official datasheet.