NXP Semiconductors MC9S08QD4VPC

Overview

MC9S08QD4VPC from NXP (formerly Freescale) is an 8-bit HCS08 microcontroller designed for cost-sensitive embedded control applications. It features a 16 MHz CPU, 4 KB flash memory, 256 bytes RAM, integrated 10-bit ADC with temperature sensor, and dual timer/PWM modules - all in an 8-pin SOIC package suitable for space-constrained industrial sensors and motor control interfaces.

For engineers reviewing the MC9S08QD4VPC datasheet, MC9S08QD4VPC pinout, MC9S08QD4VPC application, or MC9S08QD4VPC equivalent, key selection criteria include its single-wire background debug interface, internal clock source with ±2% FLL accuracy over voltage/temperature, low-power stop modes, and RoHS-compliant 8-pin SOIC packaging for legacy-compatible PCB layouts.

Technical Context

The MC9S08QD4VPC implements the HCS08 CPU core with HC08 instruction set extension including BGND, supporting up to 32 interrupt/reset sources and hardware breakpoint debugging via on-chip debug module. Its ICS module integrates a frequency-locked loop (FLL) with precision-trimmed internal reference enabling 0.2% resolution and ±2% deviation across operating voltage and temperature ranges.

Peripheral integration includes a 4-channel 10-bit ADC with automatic compare, asynchronous clocking, and RTI-triggered conversion; TIM1 (2-channel) and TIM2 (1-channel) timer/PWM modules supporting input capture, output compare, and edge-/center-aligned PWM; plus a 4-pin keyboard interrupt module with software-selectable edge/level sensitivity and internal pullups.

Key Specifications

Pinout & Package

MC9S08QD4VPC is housed in an 8-pin Small Outline Integrated Circuit (SOIC) package, RoHS compliant, with 1.27 mm pitch and standard JEDEC MS-012AC dimensions (4.9 mm × 3.9 mm × 1.75 mm). Pinout validated per NXP MC9S08QD4 Rev. 7 datasheet Section 2.1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08QD4VPC, MC9S08QG4CDTE offers expanded connectivity at the cost of larger footprint and higher pin count, while S9S08QD4F1VAC provides extended temperature operation and AEC-Q100 compliance - neither is pin-compatible, but both serve adjacent design requirements where MC9S08QD4VPC's 8-pin SOIC constraint does not apply.

Availability

MC9S08QD4VPC is available at Aetrix Electronics and suitable for industrial sensor nodes, small-appliance motor controllers, and legacy system upgrades requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MC9S08QD4VPC 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 company formed from the spin-off of Freescale Semiconductor and Philips' semiconductor division, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The MC9S08QD4VPC belongs to NXP's legacy HCS08 microcontroller family, engineered for ultra-low-cost, low-pin-count embedded control in space- and budget-constrained applications such as appliance sub-systems and sensor interfaces.

FAQ

What is the maximum operating frequency of the MC9S08QD4VPC?

The MC9S08QD4VPC features an HCS08 CPU core with a maximum bus frequency of 16 MHz, achieved via its internal clock source (ICS) module with frequency-locked loop (FLL). This frequency is maintained across the full operating voltage range (2.7–5.5 V) and temperature range (–40°C to 85°C), as specified in the Rev. 7 datasheet. The MC9S08QD4VPC does not require an external crystal to achieve this speed due to its trimmed internal reference.

Does the MC9S08QD4VPC support in-circuit debugging?

Yes, the MC9S08QD4VPC supports single-wire background debug (BDM) via the BKGD/MS pin, enabling full in-circuit programming, real-time register inspection, and breakpoint-based debugging without halting system operation. The on-chip debug module supports one active breakpoint plus two additional breakpoints, and the MC9S08QD4VPC retains debug capability even in Wait and Stop modes when BDM is enabled.

What are the power supply requirements for the MC9S08QD4VPC?

The MC9S08QD4VPC operates from a single supply voltage ranging from 2.7 V to 5.5 V, with guaranteed functionality across the full industrial temperature range (–40°C to +85°C). It includes integrated low-voltage detection (LVD) with configurable reset or interrupt output, and the internal ICS module maintains clock stability across this voltage range - eliminating the need for external voltage regulators in many battery- or rail-powered applications using the MC9S08QD4VPC.

Can the MC9S08QD4VPC perform analog-to-digital conversion without external components?

Yes, the MC9S08QD4VPC integrates a 4-channel, 10-bit ADC with internal voltage reference (bandgap), temperature sensor channel, and asynchronous clock source - enabling standalone analog measurement without external references or op-amps. The ADC supports hardware triggering via the RTI counter, and its automatic compare function allows threshold-based interrupts, making the MC9S08QD4VPC suitable for self-contained sensor processing tasks.

Is the MC9S08QD4VPC pin-compatible with other members of the QD series?

No, the MC9S08QD4VPC is not pin-compatible with higher-pin-count variants like the MC9S08QG4CDTE (16-pin TSSOP) or automotive S9S08QD4F1VAC (same 8-pin SOIC but different qualification). Within the 8-pin SOIC group, MC9S08QD4VPC shares identical pinout with MC9S08QD2VPC and S9S08QD4VAC, but differs in flash (4 KB vs. 2 KB) and temperature grade - firmware and layout remain interchangeable only within that subset, not across the broader QD family.