NXP Semiconductors MC68HC16Z1VEH16

Overview

MC68HC16Z1VEH16 from Freescale Semiconductor is a 16-bit microcontroller unit (MCU) featuring the CPU16 core, 16 KB on-chip SRAM, no on-chip ROM, 10-bit ADC with 8 channels, QSM serial interface (QSPI + SCI), and system integration module (SIM) with interrupt arbitration and clock synthesis. It operates at up to 16 MHz and targets industrial control and embedded instrumentation.

For engineers reviewing the MC68HC16Z1VEH16 datasheet, MC68HC16Z1VEH16 pinout, MC68HC16Z1VEH16 application, or MC68HC16Z1VEH16 equivalent, this page delivers verified technical context, package mapping, functional alternatives, and supply-ready availability details for design-in and procurement planning.

Technical Context

The MC68HC16Z1VEH16 implements the CPU16 architecture with 16-bit data/32-bit address capability, supporting extended addressing via address extension register and fields. Its SIM includes programmable chip-selects, bus arbitration, reset and interrupt control logic, and a clock synthesizer accepting external crystal or oscillator input.

It integrates a 10-bit successive-approximation ADC with sample-and-hold, configurable conversion timing, and internal reference options; the QSM provides independent QSPI master/slave operation and full-duplex SCI with baud rate generation - both accessible via dedicated pins and controlled through memory-mapped registers.

Key Specifications

Pinout & Package

MC68HC16Z1VEH16 is housed in a 112-pin LQFP (Low-Profile Quad Flat Package) with 0.4 mm pitch, thermally enhanced for industrial ambient operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with MC68HC16Z2VEH16, the MC68HC16Z1VEH16 trades integrated ROM for greater flexibility in firmware updates and lower cost; versus MC9328MX1CZK, it offers deterministic real-time latency and simpler power management at the expense of raw compute throughput.

Availability

MC68HC16Z1VEH16 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, motor drive feedback controllers, and energy meter data loggers requiring stable component supply across long product lifecycles.

Supply support for MC68HC16Z1VEH16 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

Freescale Semiconductor (now part of NXP Semiconductors) was a leading designer of embedded processors, analog, and connectivity solutions for automotive, industrial, and consumer markets.

The M68HC16Z series was developed as a high-integration, low-power 16-bit MCU family targeting deterministic real-time control in harsh industrial environments - emphasizing debuggability, peripheral flexibility, and long-term supply stability.

FAQ

What is the maximum operating frequency of the MC68HC16Z1VEH16?

The MC68HC16Z1VEH16 supports a maximum system clock frequency of 16 MHz, derived from an external crystal or oscillator input to the CLKIN pin. This frequency governs CPU instruction execution, ADC conversion timing, and QSPI/SCI baud rates. The internal clock synthesizer allows multiplication of lower-frequency crystals to achieve this rate, and all timing specifications in the datasheet assume operation at this rated speed.

Does the MC68HC16Z1VEH16 include on-chip program memory?

No, the MC68HC16Z1VEH16 contains 16 KB of on-chip SRAM but no integrated ROM or flash memory. Firmware must be loaded from external non-volatile memory such as EPROM, EEPROM, or flash via the external bus interface. This distinguishes it from variants like the MC68HC16Z2VEH16, which includes 32 KB of masked ROM for fixed-code applications.

How many analog input channels does the MC68HC16Z1VEH16 support?

The MC68HC16Z1VEH16 integrates a 10-bit successive-approximation ADC with eight dedicated analog input pins (AN0–AN7). These support single-ended measurements only and share the same internal reference structure. Channel selection is controlled via software-accessible ADC control registers, and conversions can be triggered manually or by timer events.

What debug interface does the MC68HC16Z1VEH16 provide?

The MC68HC16Z1VEH16 features a Background Debug Mode (BDM) interface compliant with Motorola's standard BDM protocol. It enables non-intrusive debugging via a two-wire serial connection (BKGD and VDD), supporting real-time register reads/writes, breakpoint setting, and opcode tracing - all without requiring dedicated debug hardware beyond a BDM pod or compatible emulator.

Is the MC68HC16Z1VEH16 pin-compatible with other members of the M68HC16Z series?

Yes, the MC68HC16Z1VEH16 shares identical pinout and package (112-pin LQFP) with other members of the M68HC16Z series, including MC68HC16Z2VEH16 and MC68HC16Z4VEH16. This allows direct PCB reuse across variants differing only in memory configuration or peripheral inclusion - though firmware and external circuitry must be validated for each specific variant's feature set.