NXP Semiconductors MC9S08SE4MTG

Overview

MC9S08SE4MTG from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 4 KB flash, 256 bytes RAM, 10-bit ADC, dual TPM timers, SCI interface, and real-time counter - designed for cost-sensitive embedded control in automotive body electronics, industrial sensors, and appliance motor control.

For engineers reviewing the MC9S08SE4MTG datasheet, MC9S08SE4MTG pinout, MC9S08SE4MTG application, or MC9S08SE4MTG equivalent, this page delivers verified specifications, package mapping to 16-pin TSSOP (Case 948F-01), functional pin roles, low-power stop-mode current (76.1 µA max at 125°C), and validated alternative options for migration or sourcing continuity.

Technical Context

The MC9S08SE4MTG implements the HCS08 CPU core with 20 MHz maximum CPU clock and 10 MHz bus frequency, supporting HC08 instruction set plus BGND for background debug. Its internal clock source (ICS) uses a frequency-locked loop (FLL) with factory-trimmed 39.0625 kHz reference, enabling bus frequencies from 1–10 MHz without external crystal.

System-level protection includes computer operating properly (COP) watchdog with independent 1 kHz clock, low-voltage detection (LVD) thresholds at 2.48–4.2 V, illegal opcode/address reset, and single-wire background debug interface with breakpoint capability - all confirmed for the MC9S08SE4 variant per Rev. 4 datasheet.

Key Specifications

Pinout & Package

MC9S08SE4MTG is packaged in a 16-pin TSSOP (Case 948F-01), optimized for compact PCB layouts and automated assembly. Pin functions are fully defined in the MC9S08SE8 Series datasheet Rev. 4, with pin assignments validated for the 16-pin variant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08SE4MTG, the S9S08SG48E1MTJR offers greater memory and LIN capability but demands hardware revision, while the MC9RS08KA2CSCR reduces cost and size at the expense of timer resources and real-time functionality - making MC9S08SE4MTG the optimal balance for mid-tier embedded control.

Availability

MC9S08SE4MTG is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, and home appliance motor control requiring stable component supply and long-term production continuity.

Supply support for MC9S08SE4MTG 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 applications.

The MC9S08SE4MTG belongs to the HCS08 family - engineered for cost-effective, low-power embedded control in resource-constrained environments where reliability, debug simplicity, and mixed-signal integration are critical.

FAQ

What is the maximum bus frequency supported by the MC9S08SE4MTG?

The MC9S08SE4MTG supports a maximum bus frequency of 10 MHz, achieved via its internal clock source (ICS) with frequency-locked loop (FLL) when configured with appropriate trim and reference settings. This is confirmed in Section 3.8 of the Rev. 4 datasheet and applies across the full operating voltage (2.7–5.5 V) and temperature (–40 to 125°C) range. The MC9S08SE4MTG achieves this without requiring an external crystal if the internal reference is used.

Does the MC9S08SE4MTG include a hardware RTC module?

Yes, the MC9S08SE4MTG includes a dedicated real-time counter (RTC) module with binary- or decimal-based prescaler, as documented in the "Peripherals" section of the MC9S08SE8 Series datasheet Rev. 4. It operates independently in low-power modes including Stop2 and Stop3, enabling timekeeping during extended sleep periods without CPU intervention - a confirmed feature for the MC9S08SE4 variant.

What are the valid package options for the MC9S08SE4MTG?

The MC9S08SE4MTG is specified in the 16-pin TSSOP package (Case 948F-01), as explicitly listed in the "MC9S08SE8 Series" coverage table of the Rev. 4 datasheet. While the MC9S08SE8 variant supports 28-pin SOIC and PDIP, the MC9S08SE4MTG part number suffix 'MTG' denotes the 16-pin TSSOP variant - confirmed by Freescale's ordering information and mechanical drawings.

Can the MC9S08SE4MTG operate from an internal clock source only, without external crystals?

Yes, the MC9S08SE4MTG can operate entirely from its internal clock source (ICS) without external crystals or resonators. The ICS includes a factory-trimmed 39.0625 kHz reference and FLL, enabling stable bus frequencies from 1–10 MHz. External oscillation is optional and only required when higher accuracy or specific frequency stability is needed beyond ICS capabilities.

What is the ADC resolution and conversion time for the MC9S08SE4MTG?

The MC9S08SE4MTG features a 10-bit successive-approximation ADC with a typical conversion time of 2.5 µs, as specified in the "Peripherals" section of the Rev. 4 datasheet. It supports 10 input channels, automatic compare, internal bandgap reference, and temperature sensor readout - and remains operational in Stop3 mode, enabling low-power data acquisition.