NXP Semiconductors MC68340PV16VE

Overview

MC68340PV16VE from Freescale Semiconductor (formerly Motorola) is a 32-bit integrated microprocessor with on-chip DMA controller, CPU32 core, and system integration module for embedded control applications. It operates at 16 MHz, supports 32-bit address/data bus, includes four chip selects, programmable periodic interrupt timer, and IEEE 1149.1 JTAG test access port - used in industrial controllers and communication protocol stacks requiring deterministic real-time response.

For engineers reviewing the MC68340PV16VE datasheet, MC68340PV16VE pinout, MC68340PV16VE application, or MC68340PV16VE equivalent, key selection criteria include CPU32 instruction set compatibility, integrated SIM/DMA/serial/timer peripherals, 16 MHz maximum clock frequency, and QFP-132 package mechanical constraints.

Technical Context

The MC68340PV16VE implements the CPU32 core - a 32-bit superset of the M68000 architecture with enhanced addressing modes, loop mode execution, and LPSTOP low-power instruction. Its System Integration Module (SIM) integrates external bus interface, clock synthesizer, chip select generation, interrupt handling, and software watchdog functionality.

The on-chip DMA controller supports two independent channels with programmable transfer size, source/destination addressing modes, and automatic chaining. The serial module provides dual asynchronous UART-like channels with RTS/CTS flow control, while four 16-bit timer channels support input capture, output compare, and pulse-width modulation.

Key Specifications

Pinout & Package

MC68340PV16VE is housed in a 132-pin PQFP (Plastic Quad Flat Package) with 0.65 mm lead pitch and standard JEDEC MO-118AC outline. Pin assignments follow Motorola MC68340UM/AD Rev. 1.0 signal descriptions and mechanical data.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC68340PV16VE, MC68332PV16 reduces peripheral integration for cost-sensitive control-only roles, while MC68360VR66B trades pin-count and power for packet-processing capability - neither is drop-in; both require firmware and hardware revalidation.

Availability

MC68340PV16VE is available at Aetrix Electronics and suitable for industrial PLC controllers, protocol gateways, motor drive units, and automated test equipment requiring stable component supply across long-lifecycle embedded programs.

Supply support for MC68340PV16VE 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, founded from Motorola's semiconductor division in 2004.

The MC68340 belongs to the M68300 family of integrated microprocessors targeting cost-sensitive, real-time industrial control applications - designed to replace discrete MPU + peripheral combinations with a single-chip solution.

FAQ

What is the maximum operating frequency of the MC68340PV16VE?

The MC68340PV16VE is rated for a maximum system clock frequency of 16 MHz, as specified in the MC68340P/D product brief and electrical characteristics section of the user's manual. This frequency applies to the CPU32 core and all on-chip peripherals including the SIM, DMA, serial, and timer modules. Operation above 16 MHz is not guaranteed and may result in timing violations or functional failure.

Does the MC68340PV16VE support external memory expansion?

Yes, the MC68340PV16VE supports external memory expansion via its 32-bit address bus (A31–A0) and 16-bit data bus (D15–D0), with four programmable chip select outputs (CS3–CS0) and wait-state generation logic in the SIM. Memory mapping is configured through SIM base address and address mask registers, enabling direct connection to SRAM, EPROM, or peripheral ASICs without external glue logic.

How many serial communication interfaces does the MC68340PV16VE integrate?

The MC68340PV16VE integrates two independent serial modules (Channel A and Channel B), each supporting full-duplex asynchronous communication with Rx/Tx, RTS/CTS handshaking, transmitter/receiver ready signals, and configurable baud rates. These are not UART peripherals per se but functionally equivalent serial I/O blocks mapped into the CPU32 address space and controlled via SIM registers.

Is the MC68340PV16VE pin-compatible with other members of the M68300 family?

No, the MC68340PV16VE is not pin-compatible with other M68300 family members such as the MC68332 or MC68360. While sharing the CPU32 core architecture, differences in peripheral sets (e.g., presence/absence of DMA, serial type, timer count) and package variants (132-pin PQFP vs. 114-pin QFP or 240-pin PBGA) result in distinct pinouts - verified against MC68340UM/AD signal descriptions and mechanical drawings.

What debug interface does the MC68340PV16VE provide?

The MC68340PV16VE provides an IEEE 1149.1-compliant Test Access Port (TAP) with TCK, TMS, TDI, and TDO signals, enabling boundary-scan testing and background debug mode (BDM) via external emulator. This interface supports non-intrusive program loading, breakpoint insertion, and register inspection without halting real-time peripheral operation - documented in Section 9 of the MC68340 User's Manual.