MC9S08SH16MTJ

The MC9S08SH16MTJ is a general-purpose 8-bit microcontroller from NXP Semiconductors, built on the enhanced HCS08 CPU core. As part of the S08SH family, it is specifically designed to serve cost-sensitive 5V applications, offering pin, tool, and software compatibility with the S08SG family for maximum design flexibility. With 16KB of in-application programmable Flash memory and 1KB of RAM, this device provides ample code space for small to medium embedded applications. The integrated Flash memory supports fast byte-writable programming (as fast as 20µs/byte) and is rated for up to 100,000 write/erase cycles with 100 years typical data retention. A rich peripheral set includes a 12-channel 10-bit analog-to-digital converter (ADC) with automatic compare function, an analog comparator module (ACMP), two 16-bit timer/PWM modules, and multiple serial communication interfaces (SCI/UART, SPI, I²C). The internal clock source (ICS) provides a precision-trimmed reference, eliminating the need for external crystal components in many applications. Operating from 2.7V to 5.5V, with automotive AEC-Q100 qualification and a -40°C to +125°C operating range, the MC9S08SH16MTJ in its 20-pin TSSOP package is an excellent choice for automotive body electronics, industrial control systems, home appliances, and general-purpose embedded control applications.

The MC9S08SH16MTJ is built around the enhanced HCS08 8-bit central processing unit (CPU), which executes the HC08 instruction set with added BGND (background debug) instruction. The CPU supports up to 32 interrupt/reset sources and operates at bus speeds up to 20MHz (40MHz CPU clock), providing a minimum instruction time of 50ns. Program execution is managed through a fetch-decode-execute pipeline, with most instructions executing in one or two bus cycles. The internal clock source (ICS) module contains a frequency-locked loop (FLL) controlled by a trimmed internal reference, providing a stable system clock without external crystal components. The reference can be trimmed to achieve ±0.5% accuracy across temperature and voltage variations. The 10-bit SAR ADC converts analog voltages to digital values using a successive approximation algorithm, with automatic compare hardware that can wake the MCU from low-power modes when a threshold is crossed. The two TPM (Timer/PWM) modules support input capture, output compare, and pulse-width modulation modes for motor control, timing measurement, and general-purpose timing functions. System protection is provided by a COP watchdog timer, low-voltage detect (LVD), and illegal opcode/address detection, ensuring reliable operation in noisy environments.

Note: Pins are multiplexed with multiple peripheral functions including ADC channels, timer/PWM outputs, serial communication, and keyboard interrupt. Exact pin function is configured through port control registers.

• Automotive Body Electronics: Used in door modules, seat controllers, and lighting control units requiring reliable 5V operation and AEC-Q100 qualification
• Industrial Sensor Interfaces: Serves as a sensor signal conditioner and controller in industrial automation, with 10-bit ADC and multiple communication options
• Home Appliances: Deployed in washing machines, refrigerators, and microwave ovens for motor control, user interface, and system monitoring
• Power Supply Control: Implements digital control in DC-DC converters, battery chargers, and power management units
• Motor and Fan Control: Provides PWM-based speed control for brushed DC motors and fans in HVAC and appliance applications
• Smart Metering: Used in energy meters and monitoring devices for measurement, display control, and communication interfaces
• Keypad and Display Controllers: Serves as a dedicated controller for user interfaces with matrix keypads and LED/LCD displays
• Battery Management: Implements charge control, monitoring, and protection functions in battery-powered devices and chargers