NXP Semiconductors MC68HC16Z1CPV16

Overview

MC68HC16Z1CPV16 from Freescale Semiconductor is a 16-bit microcontroller unit (MCU) featuring the CPU16 core, 16 KB on-chip SRAM, 512-byte internal 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 embedded control in industrial automation and automotive subsystems.

For engineers reviewing the MC68HC16Z1CPV16 datasheet, MC68HC16Z1CPV16 pinout, MC68HC16Z1CPV16 application, or MC68HC16Z1CPV16 equivalent, key selection criteria include CPU16 instruction compatibility with HC11, integrated QSPI/SCI for sensor/actuator interfacing, 10-bit ADC resolution with sample-and-hold, SRAM retention during STOP mode, and SIM-based clock management for low-power operation.

Technical Context

The MC68HC16Z1CPV16 implements the CPU16 architecture with 16-bit accumulators, 16-bit index registers, and 24-bit address extension for linear addressing up to 16 MB. Its System Integration Module (SIM) provides clock synthesis from crystal or external source, programmable chip-selects for memory mapping, and bus arbitration for multi-master systems.

It integrates a Queued Serial Module (QSM) combining QSPI and SCI peripherals-QSPI supports master/slave modes with command/receive/transmit RAM queues, while SCI offers asynchronous full-duplex communication with baud rate generation and framing error detection. The ADC subsystem includes multiplexer, sample capacitor, buffer amplifier, and successive approximation logic with configurable sample time and resolution.

Key Specifications

Pinout & Package

MC68HC16Z1CPV16 is housed in a 112-pin LQFP (Low-Profile Quad Flat Package) with 0.4 mm pitch, measuring 20 mm × 20 mm. Pin assignments are defined per Section 3.4 ("Pin Descriptions") and Figure 3-2 ("Pin Assignment Diagram") of the M68HC16Z Series User's Manual.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC68HC16Z2CPV16, the MC68HC16Z1CPV16 trades ROM capacity for flexibility in firmware updates; versus MC9328MX1CZP50, it delivers tighter real-time control with integrated analog and serial peripherals but lacks 32-bit performance and OS readiness.

Availability

MC68HC16Z1CPV16 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, PLC I/O modules, and medical infusion pump controllers requiring stable component supply and long-term lifecycle support.

Supply support for MC68HC16Z1CPV16 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 mixed-signal ICs for automotive, industrial, and networking markets.

The M68HC16Z series was developed as a high-integration 16-bit MCU family bridging HC11 legacy systems and advanced control requirements-emphasizing debug capability, low-power operation, and peripheral consolidation for cost-sensitive embedded designs.

FAQ

What is the maximum operating frequency of the MC68HC16Z1CPV16?

The MC68HC16Z1CPV16 operates at a maximum bus clock frequency of 16 MHz, as specified in the M68HC16Z Series User's Manual Section 5.3.2. This frequency is derived from the internal clock synthesizer and determines instruction execution speed, ADC conversion rate, and serial interface timing. Exceeding this limit may cause timing violations or undefined behavior in the CPU16 core or SIM peripherals.

Does the MC68HC16Z1CPV16 include on-chip flash or EEPROM memory?

No, the MC68HC16Z1CPV16 does not include on-chip flash or EEPROM. It contains 16 KB of static RAM (SRAM) and 512 bytes of masked ROM for boot code. Firmware must be loaded externally or stored in external non-volatile memory, as confirmed in Section 3.1.3 and 3.1.4 of the User's Manual. The Z2/Z3 variants add masked ROM; flash variants were not released in the Z-series.

Can the MC68HC16Z1CPV16 operate in low-power STOP mode with SRAM retention?

Yes, the MC68HC16Z1CPV16 supports STOP mode with full SRAM and register retention, as documented in Section 5.4.8 and Section 6.5 of the User's Manual. In STOP mode, the CPU and bus clocks halt, but SRAM remains powered and accessible upon wake-up via RESET, interrupt, or external event-enabling battery-backed operation in portable or energy-constrained systems.

What serial communication interfaces are integrated into the MC68HC16Z1CPV16?

The MC68HC16Z1CPV16 integrates a Queued Serial Module (QSM) comprising both QSPI (queued serial peripheral interface) and SCI (serial communication interface), as detailed in Sections 9.1–9.4 of the User's Manual. QSPI supports synchronous master/slave communication with command/data queues; SCI provides asynchronous full-duplex UART functionality with baud rate generation and error detection.

Is the MC68HC16Z1CPV16 pin-compatible with other members of the M68HC16Z family?

Yes, the MC68HC16Z1CPV16 shares the same 112-pin LQFP package and pinout with MC68HC16Z2CPV16, MC68HC16Z3CPV16, and MC68HC16Z4CPV16, as confirmed by identical pin assignment diagrams in Section 3.3 of the User's Manual. Functional differences (e.g., ROM size, ADC channels, MCCI presence) do not affect pin mapping, enabling hardware reuse across Z-series variants.