NXP Semiconductors S9S08QD4J1CSCR

Overview

S9S08QD4J1CSCR from NXP Semiconductors is an 8-bit HCS08 microcontroller with 16 MHz CPU clock, 4 KB Flash, 256 B RAM, and integrated ADC, dual timers (TIM1/TIM2), keyboard interrupt (KBI), and internal clock source (ICS) with FLL. It targets low-cost automotive body electronics and industrial control where compact size, debug capability, and mixed-signal integration are critical.

For engineers reviewing the S9S08QD4J1CSCR datasheet, S9S08QD4J1CSCR pinout, S9S08QD4J1CSCR application, or S9S08QD4J1CSCR equivalent, key selection factors include its 8-pin SOIC package, single-wire background debug interface, 4-channel 10-bit ADC with hardware trigger, and support for Stop2/Stop3 low-power modes in automotive temperature range (–40 °C to 125 °C).

Technical Context

The S9S08QD4J1CSCR implements the HCS08 CPU core with BGND instruction and on-chip debug module supporting one active breakpoint plus two additional breakpoints. Its ICS module uses a frequency-locked loop (FLL) with precision-trimmed internal reference (0.2% resolution, ±2% deviation over voltage and temperature) to generate system clocks without external crystals.

Peripherals include a 4-channel 10-bit ADC with automatic compare, temperature sensor, and bandgap reference; TIM1 (2-channel) and TIM2 (1-channel) PWM/timer modules supporting edge-aligned and center-aligned PWM; and a 4-pin KBI with software-selectable edge/level sensitivity and internal pullups.

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. Designed for surface-mount assembly and thermal performance suitable for ambient temperatures up to 125 °C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08QD4CPBE and S9S08QD2J1CSCR, the S9S08QD4J1CSCR uniquely combines automotive-grade temperature range (–40 °C to 125 °C), 4 KB Flash for feature-rich firmware, and 8-pin SOIC for high-volume automated assembly - making it optimal for cost-sensitive, space-constrained automotive body controllers.

Availability

S9S08QD4J1CSCR is available at Aetrix Electronics and suitable for automotive door modules, industrial fan controllers, smart lighting switches, and appliance control panels requiring stable component supply across long production lifecycles.

Supply support for S9S08QD4J1CSCR 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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with leadership in microcontrollers, RF, and security ICs.

The S9S08QD4J1CSCR belongs to NXP's legacy HCS08 MCU family, designed specifically for cost-optimized, low-pin-count automotive body electronics and industrial control where debug capability, mixed-signal integration, and AEC-Q100 qualification are essential.

FAQ

What is the maximum operating frequency of the S9S08QD4J1CSCR?

The S9S08QD4J1CSCR features an HCS08 CPU core rated for up to 16 MHz operation. This frequency is achieved using the internal clock source (ICS) module with its frequency-locked loop (FLL), which can be configured to deliver stable system clocks without external components. The 16 MHz limit defines the upper bound for instruction execution speed and peripheral timing resolution in the S9S08QD4J1CSCR.

Does the S9S08QD4J1CSCR support in-circuit debugging?

Yes, the S9S08QD4J1CSCR includes a single-wire background debug interface (BDM) that supports full in-circuit programming and real-time debugging. It allows setting breakpoints (one active plus two in debug module), stepping through code, and reading/writing memory and registers without requiring dedicated JTAG pins. This capability is integral to the S9S08QD4J1CSCR design and requires only the BKGD/MS pin and ground connection.

What analog features are integrated into the S9S08QD4J1CSCR?

The S9S08QD4J1CSCR integrates a 4-channel, 10-bit analog-to-digital converter (ADC) with internal temperature sensor, bandgap voltage reference, and automatic compare function. Conversion can be triggered by software or hardware (e.g., RTI counter), and the ADC operates asynchronously from the main bus clock. These features are fully documented in the S9S08QD4J1CSCR datasheet Rev. 7 and are functional across the full –40 °C to 125 °C temperature range.

Is the S9S08QD4J1CSCR qualified for automotive applications?

Yes, the S9S08QD4J1CSCR is specified for operation from –40 °C to +125 °C and is part of NXP's automotive-qualified HCS08 QD series. While the datasheet does not explicitly cite AEC-Q100 certification for this exact variant, its marking suffix "J1" and inclusion in automotive-focused documentation (Rev. 7, Section 1.2.3) confirm its intended use in automotive body electronics. Designers should verify qualification status with NXP for specific production lots.

What power-saving modes does the S9S08QD4J1CSCR support?

The S9S08QD4J1CSCR supports Wait mode plus three Stop modes (Stop1, Stop2, Stop3), each offering progressively deeper power reduction. Stop2 and Stop3 retain RAM and certain peripheral registers while disabling the CPU and most clocks. LVD and COP watchdog remain functional in Stop modes, and the KBI or RTI can wake the device. These modes are implemented in silicon and verified across the full operating voltage (2.7–5.5 V) and temperature range of the S9S08QD4J1CSCR.