NXP Semiconductors MC9S08JS16LCWJ

Overview

MC9S08JS16LCWJ from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 16 KB flash, 512 bytes RAM, USB 2.0 full-speed interface, and 24-pin QFN package. It operates at up to 48 MHz CPU frequency with 24 MHz bus speed, supports crystal/resonator/external clock inputs via MCG, and integrates TPM, SCI, SPI, RTC, CRC, and keyboard interrupt modules. It targets embedded USB peripheral control in industrial sensors and diagnostic tools.

For engineers reviewing the MC9S08JS16LCWJ datasheet, MC9S08JS16LCWJ pinout, MC9S08JS16LCWJ application, or MC9S08JS16LCWJ equivalent, key selection criteria include USB transceiver integration with on-chip 3.3 V regulator, low-power stop modes with RTC wake-up, 24-pin QFN thermal performance (θJA = 92°C/W), and compatibility with legacy HCS08 toolchains and debug interfaces.

Technical Context

The MC9S08JS16LCWJ implements the HCS08 CPU core with 48 MHz maximum operation and a multi-purpose clock generator (MCG) supporting FLL and PLL modes. Its USB module includes a dedicated 3.3 V regulator (VUSB33), differential transceiver (USBDP/USBDN), and endpoint 0 plus six configurable endpoints - all compliant with USB 2.0 full-speed (12 Mbps) specification.

It features dual low-power stop modes (Stop2/Stop3) with sub-μA current draw, real-time counter with binary/decimal prescaler, hardware CRC16-CCITT engine, and programmable I/O drive strength, slew rate, and pullup/pulldown resistors (20–65 kΩ). The MCG provides internal reference trimming for ±0.5% DCO frequency stability over voltage and temperature.

Key Specifications

Pinout & Package

MC9S08JS16LCWJ uses a 24-pin quad flat no-lead (QFN) package per case number 98ASA00734D, with 4×4 mm body, 0.5 mm pitch, and exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08AC16CFGE and MC9S08GB60CFTE, the MC9S08JS16LCWJ delivers optimal balance of USB integration, compact 24-pin QFN packaging, and ultra-low-power stop modes - making it ideal for space-constrained, battery-operated USB peripherals where cost and component count are critical.

Availability

MC9S08JS16LCWJ is available at Aetrix Electronics and suitable for industrial sensor nodes, USB diagnostic tools, embedded USB peripherals, and low-cost USB HID devices requiring stable component supply and long-term lifecycle support.

Supply support for MC9S08JS16LCWJ 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 markets.

The MC9S08JS16LCWJ belongs to the HCS08 family, designed specifically for cost-sensitive, low-power embedded control applications requiring integrated USB connectivity and robust real-time performance in harsh environments.

FAQ

What is the maximum operating frequency of the MC9S08JS16LCWJ CPU core?

The MC9S08JS16LCWJ CPU core operates at a maximum frequency of 48 MHz. This is achieved using the MCG's PLL mode with an external crystal or resonator input. The internal bus frequency is limited to 24 MHz, ensuring reliable peripheral timing and deterministic instruction execution for real-time control tasks within the MC9S08JS16LCWJ architecture.

Does the MC9S08JS16LCWJ include an integrated USB transceiver and voltage regulator?

Yes, the MC9S08JS16LCWJ integrates a full-speed USB 2.0 transceiver with differential USBDP and USBDN pins, plus an on-chip 3.3 V regulator (VUSB33) dedicated to powering the USB PHY. This eliminates the need for external USB PHY ICs and discrete LDOs, reducing bill-of-materials cost and PCB area - a key feature distinguishing the MC9S08JS16LCWJ from non-USB HCS08 variants.

What low-power modes does the MC9S08JS16LCWJ support, and what is its minimum current draw?

The MC9S08JS16LCWJ supports Wait, Stop2, and Stop3 low-power modes. In Stop3 mode with all modules disabled, it draws just 1.5 μA at 5 V (typical). With RTC enabled, the current increases by only 300 nA - enabling multi-year battery operation in sensor and diagnostic applications. This ultra-low quiescent current is a defining characteristic of the MC9S08JS16LCWJ for energy-constrained designs.

What package type and pin count does the MC9S08JS16LCWJ use, and is it RoHS-compliant?

The MC9S08JS16LCWJ uses a 24-pin quad flat no-lead (QFN) package with 4×4 mm body and 0.5 mm pitch, per case number 98ASA00734D. It features an exposed thermal pad for improved heat dissipation. As a Freescale/NXP product released post-2006, the MC9S08JS16LCWJ is RoHS-compliant and lead-free, meeting EU Directive 2011/65/EU requirements for hazardous substance restrictions.

Can the MC9S08JS16LCWJ operate without an external crystal, and what clock accuracy can be expected?

Yes, the MC9S08JS16LCWJ can operate without an external crystal using its internal trimmed reference clock, which achieves ±0.5% frequency accuracy over voltage and temperature. This is sufficient for non-USB applications like general-purpose control or UART communication. However, USB full-speed operation requires ±0.25% accuracy, so an external 32 kHz or 1–16 MHz crystal is mandatory when USB functionality is enabled in the MC9S08JS16LCWJ.