NXP Semiconductors MC9S08SE8CTGR

Overview

MC9S08SE8CTGR from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 8 KB flash, 512 bytes RAM, and integrated peripherals including SCI, 10-channel 10-bit ADC, two TPM modules, RTC, and KBI. It operates at up to 20 MHz CPU clock and 10 MHz bus frequency, supporting LIN communication and low-power stop modes. It is used in cost-sensitive industrial control and automotive body electronics.

For engineers reviewing the MC9S08SE8CTGR datasheet, MC9S08SE8CTGR pinout, MC9S08SE8CTGR application, or MC9S08SE8CTGR equivalent, this page delivers verified specifications, package mapping, functional pin roles, real-world use cases, and validated alternative options for design-in and supply continuity planning.

Technical Context

The MC9S08SE8CTGR implements the HCS08 CPU core with HC08 instruction set extension (BGND), supports up to 32 interrupt/reset sources, and features a flexible clock system combining internal ICS (FLL-based, 1–10 MHz bus) and external XOSC (31.25 kHz–16 MHz). Its memory subsystem includes block-protected flash with security options and on-chip RAM retaining data down to 0.6 V.

Peripheral integration includes full-duplex SCI with LIN master/slave break handling, 10-bit ADC with temperature sensor (1.7 mV/°C) and bandgap reference, dual TPM modules (TPM1: 2-channel, TPM2: 1-channel) supporting PWM, input capture, and buffered centered PWM, plus RTC with binary/decimal prescaler and 8-pin KBI.

Key Specifications

Pinout & Package

MC9S08SE8CTGR is packaged in a 16-pin TSSOP (Case 948F-01), pin-compatible with other MC9S08SE8 variants in same footprint. Pin functions are software-configurable per port register settings, with internal pullups on RESET, IRQ, and BKGD/MS pins to reduce BOM count.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08SE8CTGR, MC9S08SH8CTJ offers expanded serial connectivity in a larger package, while S9KEAZ128AMLH provides scalable 32-bit performance at the cost of increased layout complexity and active power - both require firmware adaptation and hardware revision.

Availability

MC9S08SE8CTGR is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, smart appliance control boards, and medical diagnostic handhelds requiring stable component supply and long-term lifecycle support.

Supply support for MC9S08SE8CTGR 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, IoT, and mobile applications, with deep heritage in microcontrollers dating back to Motorola and Freescale.

The MC9S08SE8 series belongs to NXP's legacy HCS08 portfolio, designed specifically for cost-optimized, low-power embedded control in automotive and industrial environments where reliability, small footprint, and LIN compatibility are critical.

FAQ

What is the maximum operating frequency of the MC9S08SE8CTGR CPU and bus?

The MC9S08SE8CTGR CPU supports up to 20 MHz operation, while the internal bus frequency is rated up to 10 MHz. This is achieved using either the internal ICS module (FLL-based, trimmed for ±0.2% resolution) or an external crystal/resonator (1–16 MHz). The bus clock must remain within specification to ensure reliable peripheral timing - exceeding 10 MHz may cause undefined behavior in TPM or ADC modules.

Does the MC9S08SE8CTGR support LIN communication natively?

Yes, the MC9S08SE8CTGR's SCI module supports LIN 2.x protocol natively: it generates extended breaks (13–18 bit dominant) in master mode and detects them in slave mode. The SCI also provides wakeup-on-active-edge capability, enabling low-power LIN slave operation. No external transceiver is required for basic LIN physical layer compliance - only a standard LIN transceiver IC (e.g., TJA1020) is needed for bus interfacing.

What power-saving modes does the MC9S08SE8CTGR offer, and what is the lowest current draw?

The MC9S08SE8CTGR supports Wait, Stop2, and Stop3 modes. Stop3 achieves the lowest active current: 1.61 μA typical at 5 V and –40 to 85 °C, with RTC running independently. An optional oscillator adder (S3IDDOSC = 5–8 μA) and LVD adder (S3IDDLVD = 122 μA) apply if those features are enabled. Stop3 is ideal for battery-backed applications requiring periodic wake-up without external timers.

Can the MC9S08SE8CTGR ADC operate during low-power modes?

Yes, the 10-bit ADC in the MC9S08SE8CTGR is explicitly specified to run in Stop3 mode, enabling analog measurements without exiting ultra-low-power state. It supports automatic compare, temperature sensing (1.7 mV/°C), and uses an internal bandgap reference channel (1.20 V ±10 mV). Conversion time remains 2.5 μs, and results are accessible via registers upon completion - critical for energy-constrained sensor polling.

Is the MC9S08SE8CTGR pin-compatible with other MC9S08SE8 package variants?

The MC9S08SE8CTGR (16-pin TSSOP) shares identical pin functions with the 28-pin SOIC/PDIP versions for pins 1–16, but lacks PTC0–PTC7, PTA6–PTA7, and PTC1–PTC6. Port mappings for PTA0–PTA5, PTB0–PTB3, and power pins are consistent. Software written for the 16-pin variant remains portable to larger packages, though hardware abstraction layers should isolate unused pin references to avoid runtime errors.