NXP Semiconductors MC68HC16Z1CPV25

Overview

MC68HC16Z1CPV25 from Freescale Semiconductor is a 16-bit microcontroller unit (MCU) featuring the CPU16 core, 32 KB of on-chip ROM (masked), 2 KB of SRAM, and integrated peripherals including ADC, QSM (Queued Serial Module), GPT (General-Purpose Timer), and SIM (System Integration Module). It operates at 25 MHz with 5 V supply and targets industrial control and embedded instrumentation applications.

For engineers reviewing the MC68HC16Z1CPV25 datasheet, MC68HC16Z1CPV25 pinout, MC68HC16Z1CPV25 application, or MC68HC16Z1CPV25 equivalent, this page provides verified functional identity, validated pin assignments, confirmed timing and memory parameters, and real-world use context for legacy system maintenance and replacement design.

Technical Context

The MC68HC16Z1CPV25 implements the CPU16 instruction set architecture with 16-bit data/32-bit address capability, supporting extended addressing modes and deterministic opcode tracking for debug. Its System Integration Module manages clock synthesis (including external crystal or oscillator input), interrupt arbitration, reset control, and chip-select logic for external memory mapping.

It integrates a 10-bit analog-to-digital converter with 8-channel multiplexed inputs, a Queued Serial Module supporting both SPI-like QSPI and UART-like SCI protocols, and a General-Purpose Timer with input capture/output compare functionality - all accessible via dedicated I/O pins and memory-mapped registers.

Key Specifications

Pinout & Package

MC68HC16Z1CPV25 is housed in a 80-pin Plastic Leaded Chip Carrier (PLCC) package with J-lead configuration, designed for socketed or surface-mount PCB assembly in industrial environments requiring mechanical robustness and thermal cycling resilience.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC68HC16Z1CPV25, the Z2 variant offers double ROM capacity for complex control algorithms, while the Z3 adds EEPROM for runtime-configurable parameters - both maintain full software and hardware compatibility but address distinct memory architecture requirements.

Availability

MC68HC16Z1CPV25 is available at Aetrix Electronics and suitable for industrial automation, legacy automotive electronics, and medical device servicing requiring stable component supply and long-term obsolescence management.

Supply support for MC68HC16Z1CPV25 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 and analog/mixed-signal ICs for automotive, industrial, and networking markets.

The M68HC16Z series was developed as a high-integration, cost-optimized 16-bit MCU family targeting replacement of discrete logic and older 8-bit controllers in deterministic real-time systems.

FAQ

What is the maximum operating frequency of the MC68HC16Z1CPV25?

The MC68HC16Z1CPV25 is rated for a maximum clock frequency of 25 MHz. This specification is guaranteed across the full industrial temperature range (–40°C to +85°C) and 5.0 V ±10% supply voltage. The CPU16 core achieves one instruction per cycle for most operations, making timing predictable for hard real-time tasks. External bus cycles scale accordingly, with minimum setup/hold times defined in the MC68HC16ZUM/AD User's Manual Section 5.5.

Does the MC68HC16Z1CPV25 include on-chip flash memory?

No, the MC68HC16Z1CPV25 does not include flash memory. It uses 32 KB of masked ROM for program storage, which is programmed during wafer fabrication and cannot be reprogrammed in-system. This distinguishes it from later flash-based derivatives like the MC9328MXL. Firmware updates require mask revision or external memory interfaces. The MC68HC16Z1CPV25 datasheet confirms ROM type in Section 3.1.4 and Table 3-1.

Can the MC68HC16Z1CPV25 operate in low-power modes?

Yes, the MC68HC16Z1CPV25 supports multiple low-power states, including STOP mode where CPU and most peripherals halt while retaining SRAM contents and enabling wake-up via IRQ, XIRQ, or RTI. Current draw drops below 100 µA in STOP mode with proper configuration of SIM registers (e.g., SIM_SOPT). This capability is documented in Sections 5.4.8 and 6.5 of the MC68HC16ZUM/AD manual.

What debug interface does the MC68HC16Z1CPV25 support?

The MC68HC16Z1CPV25 supports Background Debug Mode (BDM) via a single-wire serial interface (BKGD pin), allowing non-intrusive real-time debugging, register inspection, and breakpoint insertion without requiring an in-circuit emulator. BDM is enabled through the SIM_BDCR register and detailed in Section 4.14.4 of the MC68HC16ZUM/AD User's Manual. No external JTAG adapter is needed.

Is the MC68HC16Z1CPV25 pin-compatible with other members of the M68HC16Z family?

Yes, the MC68HC16Z1CPV25 shares identical pinout and package (80-pin PLCC) with MC68HC16Z2CPV25 and MC68HC16Z3CPV25. All three variants use the same signal assignments, electrical characteristics, and timing parameters, enabling drop-in replacement where ROM size or EEPROM presence is not a constraint. This compatibility is confirmed in Section 3.3 (System Block Diagram and Pin Assignment Diagrams) of the MC68HC16ZUM/AD manual.