NXP Semiconductors MC9S08SH16VTJ

Overview

MC9S08SH16VTJ from NXP (formerly Freescale) is an 8-bit HCS08 microcontroller with 16 KB Flash, 1 KB RAM, and integrated peripherals including 10-bit ADC, dual TPM PWM timers, SCI, SPI, I²C, ACMP, RTC, and background debug interface. It operates at up to 20 MHz bus frequency and supports stop3 mode for ultra-low-power operation in battery-powered sensor nodes and industrial controls.

For engineers reviewing the MC9S08SH16VTJ datasheet, MC9S08SH16VTJ pinout, MC9S08SH16VTJ application, or MC9S08SH16VTJ equivalent, this page delivers verified specifications, package mapping to 20-TSSOP, validated peripheral capabilities (ADC conversion time, RTC wake-up, COP watchdog), and two confirmed alternative parts with documented functional and packaging differences.

Technical Context

The MC9S08SH16VTJ implements the HCS08 CPU core with HC08 instruction set plus BGND, supporting up to 32 interrupt/reset sources and executing instructions at 40 MHz internal clock rate (20 MHz bus). Its memory subsystem includes 16 KB on-chip Flash with block protection and 1 KB RAM secured by hardware security circuitry.

Power management integrates two very low-power stop modes (Stop2/Stop3), reduced-power wait mode, and a dedicated 1 kHz real-time counter that remains active across all modes. Clock generation combines an external crystal oscillator (31.25 kHz–16 MHz) and an internal clock source (ICS) with FLL, enabling ±0.2% trimming resolution and 2% deviation over voltage/temperature.

Key Specifications

Pinout & Package

MC9S08SH16VTJ is housed in a 20-pin Thin Shrink Small Outline Package (20-TSSOP), measuring 6.5 mm × 4.4 mm × 1.2 mm, with 0.65 mm lead pitch and exposed thermal pad. Pin assignments are defined per Freescale MC9S08SH32 Series Data Sheet Rev. 3 (covers MC9S08SH16).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08SH16VTJ, MC9S08SH32VTJ provides direct Flash capacity upgrade within identical footprint and firmware compatibility, while S9KEAZ128AMLH represents a next-generation architectural shift - trading pin compatibility for performance, memory, and modern toolchain advantages.

Availability

MC9S08SH16VTJ is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, smart appliance subsystems, and portable medical diagnostics requiring stable component supply and long-term lifecycle support.

Supply support for MC9S08SH16VTJ 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.

The MC9S08SH16VTJ belongs to the legacy HCS08 microcontroller family designed for cost-sensitive, ultra-low-power embedded control in resource-constrained environments where deterministic real-time response and minimal BOM count are critical.

FAQ

What is the maximum bus frequency supported by the MC9S08SH16VTJ?

The MC9S08SH16VTJ supports a maximum bus frequency of 20 MHz, achieved via its Internal Clock Source (ICS) module with Frequency-Locked Loop (FLL). This frequency is derived from either an internal trimmed reference or an external crystal, and it directly governs the timing of peripherals including TPM, ADC, and communication modules. The underlying CPU core runs at 40 MHz internally, ensuring sufficient margin for instruction execution at full bus speed. MC9S08SH16VTJ maintains timing compliance across its full operating voltage (2.7–5.5 V) and temperature range (−40°C to +105°C).

Does the MC9S08SH16VTJ include hardware security features to protect firmware?

Yes, the MC9S08SH16VTJ integrates hardware security circuitry that prevents unauthorized access to both Flash and RAM contents via the background debug interface. Security is enforced through lock bits in the Flash configuration registers (FOPT/NVOPT), which, once set, disable read-out of protected memory regions. This feature is active immediately after reset and persists across power cycles. MC9S08SH16VTJ does not require external encryption co-processors - firmware IP protection is implemented entirely on-die, meeting baseline requirements for proprietary algorithm safeguarding in consumer and industrial devices.

Can the MC9S08SH16VTJ operate in ultra-low-power modes while maintaining real-time wake-up capability?

Yes, the MC9S08SH16VTJ supports Stop3 mode - its deepest low-power state - where the 1 kHz real-time counter (RTC) continues running independently using an on-chip oscillator, enabling precise wake-up intervals without external components. In Stop3, the ADC can also remain active for periodic sampling, and selected I/O pins retain interrupt capability. Current consumption drops below 1 μA under typical conditions. MC9S08SH16VTJ's RTC wake-up functionality is fully documented in Section 13 of the MC9S08SH32 Series Data Sheet (Rev. 3), which explicitly covers the MC9S08SH16 variant.

What communication interfaces are integrated into the MC9S08SH16VTJ?

The MC9S08SH16VTJ integrates three synchronous/asynchronous serial interfaces: SCI (UART with LIN extensions), SPI (full-duplex or single-wire, master/slave), and I²C (up to 100 kbps, multi-master, 7- or 10-bit addressing). All are register-configurable, interrupt-driven, and operational in Run, Wait, and Stop3 modes. SCI supports LIN master break generation and slave break detection; SPI includes double-buffered TX/RX; I²C supports broadcast mode and programmable slave address. MC9S08SH16VTJ does not include CAN, USB, or Ethernet controllers - those interfaces require external components or higher-tier MCUs.

Is the MC9S08SH16VTJ pin-compatible with other members of the HCS08 SH-series?

Yes, the MC9S08SH16VTJ in 20-TSSOP is pin-compatible with the MC9S08SH32VTJ (32 KB Flash) in the same package, sharing identical pin functions, electrical characteristics, and memory map layout. This allows direct substitution without PCB modification. However, it is not pin-compatible with 28-TSSOP or SOIC variants of the SH-series, nor with unrelated families such as S08AW or RS08. MC9S08SH16VTJ's pin compatibility is confirmed in Freescale's MC9S08SH32 Series Data Sheet Rev. 3, Appendix B, which lists mechanical drawings and cross-package signal alignment for VTJ-suffixed parts.