NXP Semiconductors MC9S08QG4CDNE

Overview

MC9S08QG4CDNE from Freescale Semiconductor is an 8-bit HCS08 microcontroller featuring a 20-MHz CPU, 4 Kbytes of FLASH memory, 256 bytes of RAM, and integrated peripherals including 8-channel 10-bit ADC, SCI, SPI, I²C, TPM, ACMP, and MTIM - deployed in cost-sensitive industrial control and sensor interface applications.

For engineers reviewing the MC9S08QG4CDNE datasheet, MC9S08QG4CDNE pinout, MC9S08QG4CDNE application, or MC9S08QG4CDNE equivalent, key selection criteria include its 16-pin QFN package, internal clock source with FLL (1–10 MHz bus), low-voltage detection, COP watchdog, and single-wire background debug interface.

Technical Context

The MC9S08QG4CDNE implements the S08CPUV2 core with HC08 instruction set extension (BGND), supporting up to 32 interrupt/reset sources and hardware breakpoint capability via an on-chip debug module with two comparators and nine trigger modes. Its ICS module integrates a frequency-locked loop (FLL) with factory-trimmed internal reference (±2% deviation over voltage/temperature) and supports bus frequencies from 1 MHz to 10 MHz.

Peripherals are tightly coupled to the CPU via a unified memory map: ADC uses asynchronous clocking and hardware RTI triggering; ACMP output can route to TPM for event synchronization; SCI supports 13-bit break detection; and TPM provides dual-channel PWM with edge- and center-aligned modes. All modules retain defined behavior in Wait and Stop3 modes.

Key Specifications

Pinout & Package

MC9S08QG4CDNE is housed in a 16-pin quad flat no-lead (QFN) package with exposed thermal pad (98ASA00671D), measuring 4 mm × 4 mm × 0.85 mm, RoHS-compliant, and optimized for thermal dissipation in space-constrained designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08QG4CDNE, MC9S08QG8CDNE offers double FLASH/RAM in identical 16-pin QFN packaging for seamless scalability, while S9KEAZ128AMLH represents a full architectural upgrade with ARM ecosystem advantages but requires PCB and firmware redesign.

Availability

MC9S08QG4CDNE is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat interfaces, motor feedback units, and legacy equipment retrofit programs requiring stable component supply and long-term manufacturability.

Supply support for MC9S08QG4CDNE 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

Freescale Semiconductor (now part of NXP Semiconductors) is a pioneer in embedded microcontrollers, delivering scalable, automotive-qualified silicon with strong toolchain and ecosystem support.

The MC9S08QG4CDNE belongs to the HCS08 family - designed specifically for cost-sensitive, low-power industrial and consumer control applications where small footprint, debug simplicity, and peripheral integration outweigh raw processing throughput.

FAQ

What is the maximum operating frequency of the MC9S08QG4CDNE CPU?

The MC9S08QG4CDNE features a 20-MHz HCS08 CPU core, supporting instruction execution at up to 20 million cycles per second. Its internal clock source (ICS) with frequency-locked loop (FLL) enables stable bus frequencies from 1 MHz to 10 MHz, and the CPU executes instructions in one to five bus cycles depending on addressing mode. This makes the MC9S08QG4CDNE suitable for deterministic real-time tasks in resource-constrained systems.

Does the MC9S08QG4CDNE support in-circuit debugging, and what interface is used?

Yes, the MC9S08QG4CDNE supports in-circuit debugging via a single-wire background debug interface using the BKGD/MS pin. This interface enables full read/write memory access, breakpoint setting (one hardware + two debug-module breakpoints), and real-time bus capture without requiring additional pins or headers. The MC9S08QG4CDNE debug module includes two comparators and nine trigger modes, making it ideal for field diagnostics and firmware validation.

What are the supported package types for the MC9S08QG4CDNE, and which one is indicated by the 'DNE' suffix?

The 'DNE' suffix in MC9S08QG4CDNE specifies the 16-pin QFN package with exposed thermal pad (case outline 98ASA00671D). While the MC9S08QG4 family also supports 8-pin PDIP and SOIC variants, only the DNE variant uses the 4 mm × 4 mm QFN. This package provides superior thermal performance and board-area efficiency compared to through-hole alternatives, aligning with modern compact industrial PCB layouts.

Can the MC9S08QG4CDNE operate from a battery for extended periods, and what low-power features enable this?

Yes, the MC9S08QG4CDNE is engineered for ultra-low-power operation: Stop3 mode draws ≤1 µA typical at 25°C, and its real-time interrupt (RTI) module can wake the device periodically without external components. Combined with programmable low-voltage detection (LVD) and COP watchdog running from a dedicated 1-kHz internal clock, the MC9S08QG4CDNE sustains reliable operation in battery-powered sensor nodes for over 18 months - a key advantage in remote monitoring deployments.

What analog peripherals are integrated into the MC9S08QG4CDNE, and how are they typically used together?

The MC9S08QG4CDNE integrates an 8-channel 10-bit ADC with internal bandgap reference and temperature sensor, plus a dual-channel analog comparator (ACMP) whose output can route directly to the TPM module. This enables tightly coupled analog-digital workflows - for example, using ACMP to detect overvoltage thresholds and trigger TPM input capture for timestamped event logging, while the ADC concurrently samples system temperature for compensation. All analog blocks share common VDDAD/VSSAD rails and support hardware triggering via RTI, ensuring synchronized, CPU-efficient measurement sequences.