NXP Semiconductors MC9S08JE128CLK

Overview

MC9S08JE128CLK from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 128 KB flash, 12 KB RAM, and integrated USB 2.0 full-speed device interface. It operates up to 48 MHz at ≥2.4 V, supports ultra-low-power stop3 mode with 6 µs wake-up, and integrates ADC12 (12-bit, 8 SE/4 diff), DAC12, PDB, TPM, SCI, SPI, IIC, CMT, and TOD - deployed in automotive body control modules and industrial sensor hubs.

For engineers reviewing the MC9S08JE128CLK datasheet, MC9S08JE128CLK pinout, MC9S08JE128CLK application, or MC9S08JE128CLK equivalent, key selection criteria include its dual-oscillator clock architecture (XOSC1 for TOD, XOSC2 for USB/system), MCG PLL/FLL with 0.2% trimming resolution, on-chip voltage regulator (VUSB33), and hardware CRC engine - all validated across –40°C to +105°C.

Technical Context

The MC9S08JE128CLK implements the HCS08 CPU core with BGND instruction support and handles up to 32 interrupt/reset sources. Its Multipurpose Clock Generator (MCG) provides selectable FEI/FBI/FBE/PBE/PEE modes, enabling precise bus clock derivation from internal reference (±2% over voltage/temp) or external crystals (32.768 kHz for TOD, high-frequency for USB).

System-level protection includes COP watchdog with dedicated 1-kHz clock option, dual-threshold low-voltage detection (LVD/LVW), illegal opcode/address reset, flash block protection, and hardware CRC. Peripheral clock gating via SIM allows selective module disablement to reduce active current.

Key Specifications

Pinout & Package

MC9S08JE128CLK is available in three package variants: 80-pin LQFP (12 mm × 12 mm), 64-pin LQFP (10 mm × 10 mm), and 81-pin MAPBGA (10 mm × 10 mm). Pin functions are multiplexed per package; all variants share identical peripheral functionality and register mapping.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S9KEAZ128AMLH and MC9S08AC128CFUE, the MC9S08JE128CLK uniquely combines USB 2.0 device capability, hardware CRC, PDB-triggered ADC sequencing, and ultra-low-power TOD in a mature HCS08 platform - making it optimal for legacy-compatible, USB-enabled embedded control where minimal external components and deterministic timing are required.

Availability

MC9S08JE128CLK is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, USB HID devices, and smart energy meter interfaces requiring stable component supply across extended temperature ranges.

Supply support for MC9S08JE128CLK 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 delivering secure, connected, and intelligent solutions for automotive, industrial, IoT, and mobile applications.

The MC9S08JE128CLK belongs to NXP's HCS08 8-bit MCU family, designed specifically for cost-sensitive, low-power embedded control applications demanding USB connectivity, robust system protection, and extended temperature operation.

FAQ

What is the maximum operating frequency of the MC9S08JE128CLK and under what voltage conditions?

The MC9S08JE128CLK achieves up to 48 MHz CPU operation when supply voltage (VDD) is ≥2.4 V, 40 MHz at ≥2.1 V, and 20 MHz at ≥1.8 V - all across the full industrial temperature range of –40°C to +105°C. These ratings are specified in the Freescale MC9S08JE128 Rev. 3 datasheet Section 2.10 and validated by characterization across process corners.

Does the MC9S08JE128CLK support USB device functionality without external components?

Yes, the MC9S08JE128CLK integrates a full-speed USB 2.0 transceiver and on-chip 3.3 V regulator (VUSB33), enabling compliant USB device operation with only external series resistors and ESD protection diodes. No external PHY or LDO is required - confirmed in the "USB" peripheral section of the MC9S08JE128RM reference manual.

How does the Programmable Delay Block (PDB) interact with the ADC12 module in the MC9S08JE128CLK?

The PDB in the MC9S08JE128CLK provides eight hardware-trigger outputs that can initiate ADC12 conversions with precise timing intervals. It supports back-to-back and timed modes, enabling synchronized multi-channel sampling sequences and generating an interrupt upon sequence completion - directly documented in Section 27.4.3 of the MC9S08JE128RM.

What power-saving modes are available on the MC9S08JE128CLK and which peripherals remain active in stop3 mode?

The MC9S08JE128CLK offers two ultra-low-power stop modes, with stop3 enabling continued operation of the Time of Day (TOD) counter, PRACMP analog comparator, ADC12, and wake-up on SCI Rx edge or IRQ pin. Stop3 wake-up latency is 6 µs typical - verified in Section 5.3.2 of the MC9S08JE128 datasheet.

Is the MC9S08JE128CLK pin-compatible with other members of the MC9S08JE series such as the MC9S08JE64?

No, the MC9S08JE128CLK is not pin-compatible with the MC9S08JE64: the JE128 is offered in 81-pin MAPBGA, 80-pin LQFP, and 64-pin LQFP packages, while the JE64 uses only 64-pin and 80-pin LQFP variants with differing pin counts and assignments - as explicitly stated in Table 1 and Figure 2–4 of the MC9S08JE128 datasheet Rev. 3.