NXP Semiconductors S9S08QD4J1MSCR

Overview

S9S08QD4J1MSCR from NXP Semiconductors is an 8-bit HCS08 microcontroller with a 16 MHz CPU, 4 KB flash memory, 256 bytes RAM, and integrated ADC, dual timers (TIM1/TIM2), keyboard interrupt module, and internal clock source with FLL. It operates in automotive-grade temperature range (–40 °C to 125 °C) and targets low-cost embedded control in body electronics and sensor interfaces.

For engineers reviewing the S9S08QD4J1MSCR datasheet, S9S08QD4J1MSCR pinout, S9S08QD4J1MSCR application, or S9S08QD4J1MSCR equivalent, key selection criteria include flash/RAM size, 8-pin SOIC packaging, single-wire BDM debug support, automotive qualification, and integrated analog/peripheral resources for space-constrained MCU designs.

Technical Context

The S9S08QD4J1MSCR implements the HCS08 CPU core with HC08 instruction set plus BGND, supporting up to 32 interrupt/reset sources and background debugging with one hardware breakpoint plus two on-chip debug breakpoints. Its ICS module delivers precise clocking via FLL with 0.2% trimming resolution and ±2% deviation over voltage/temperature.

Peripherals include a 4-channel 10-bit ADC with hardware trigger (RTI), two independent timer/PWM modules (TIM1: 2-channel, TIM2: 1-channel), and a 4-pin keyboard interrupt module with software-selectable edge/level polarity. All I/Os support configurable pullups, slew rate, and drive strength - outputs rated at 10 mA per pin, 60 mA total.

Key Specifications

Pinout & Package

8-pin SOIC package (3.9 mm × 4.9 mm, 1.27 mm pitch), RoHS compliant, with exposed pad not present. Pin functions validated per MC9S08QD4 Rev. 7 datasheet Section 2.1 and Appendix B.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08QD4CPBE and S9S08QD2J1MSCR, the S9S08QD4J1MSCR uniquely combines automotive temperature rating, 4 KB flash, and 8-pin SOIC in a single orderable variant - making it the only option for production automotive body electronics requiring both space efficiency and AEC-Q100 alignment.

Availability

S9S08QD4J1MSCR is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, smart lighting controls, and appliance motor interfaces requiring stable component supply across long product lifecycles.

Supply support for S9S08QD4J1MSCR 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, IoT, mobile, and communication infrastructure markets.

The S9S08QD4J1MSCR belongs to the HCS08 QD-series - a family of ultra-low-cost, high-integration 8-bit MCUs designed specifically for entry-level automotive body control and industrial embedded applications where footprint, debug simplicity, and qualification matter more than raw performance.

FAQ

What is the maximum operating frequency of the S9S08QD4J1MSCR?

The S9S08QD4J1MSCR features an HCS08 CPU core with a maximum system clock frequency of 16 MHz. This is achieved using the internal clock source (ICS) module with its frequency-locked loop (FLL), which can be configured to deliver stable 16 MHz operation across the full –40 °C to +125 °C temperature range and 2.7–5.5 V supply voltage. The S9S08QD4J1MSCR does not support external crystal oscillators - all timing derives from the calibrated internal reference.

Does the S9S08QD4J1MSCR support in-circuit debugging?

Yes, the S9S08QD4J1MSCR supports single-wire background debug mode (BDM) via the BKGD/MS pin. This allows full in-circuit programming, real-time register inspection, and breakpoint-based debugging without halting peripheral operation. The on-chip debug module provides one hardware breakpoint plus two additional breakpoints managed by the debug host - all accessible through standard Freescale/NXP BDM tools and compatible IDEs like S32DS or legacy CodeWarrior.

What are the ADC capabilities of the S9S08QD4J1MSCR?

The S9S08QD4J1MSCR integrates a 10-bit successive-approximation ADC with four input channels (AD0–AD3), internal bandgap reference, temperature sensor channel, and automatic compare function. Conversions can be triggered by software, timer overflow, or the real-time interrupt (RTI) counter - enabling precise periodic sampling. The ADC supports asynchronous clocking and delivers 10-bit results in two 8-bit registers (ADCRH/ADCRL), with typical INL/DNL < ±1 LSB across the operating range.

Is the S9S08QD4J1MSCR qualified for automotive applications?

Yes, the S9S08QD4J1MSCR is explicitly qualified for automotive use, with a specified operating temperature range of –40 °C to +125 °C and compliance with AEC-Q100 stress test requirements. Its part number suffix "J1M" denotes automotive grade, and the device includes automotive-specific features such as enhanced ESD immunity, robust COP watchdog with dedicated 32 kHz clock, and flash block protection to safeguard calibration data in field deployments.

What power-saving modes does the S9S08QD4J1MSCR support?

The S9S08QD4J1MSCR supports Wait mode plus three Stop modes (Stop1, Stop2, Stop3), each progressively reducing power consumption. In Stop3 mode, current draw drops to ~1 µA while retaining RAM retention and allowing wake-up via IRQ, KBI, or RTI. The ICS module remains functional in Stop2/Stop3 to support fast wake-up and clock recovery. Low-voltage detect (LVD) and COP watchdog continue operating in all Stop modes - ensuring safety-critical behavior remains active during ultra-low-power states.