NXP Semiconductors MCF5307CAI90B

Overview

MCF5307CAI90B from Freescale Semiconductor is a ColdFire® v2 32-bit microprocessor with integrated DRAM controller, UARTs, I²C, timers, and DMA - operating at 90 MHz CPU clock, featuring 8 KB unified cache and 4 KB on-chip SRAM. It targets embedded networking, industrial control, and communications equipment requiring deterministic real-time processing and external memory interfacing.

For engineers reviewing the MCF5307CAI90B datasheet, MCF5307CAI90B pinout, MCF5307CAI90B application, or MCF5307CAI90B equivalent, key selection criteria include its 90 MHz ColdFire v2 core, integrated synchronous/asynchronous DRAM controller, IEEE 1149.1 JTAG debug support, and I²C peripheral compliance - all in a 256-pin PQFP package.

Technical Context

The MCF5307CAI90B implements the ColdFire v2 instruction set architecture with a two-stage pipeline (IFP/OEP), hardware MAC unit, and integer divide module. It integrates a System Integration Module (SIM) containing PLL clock generation, interrupt controller, chip-select logic, and JTAG test access port.

Its DRAM controller supports both synchronous (SDRAM) and asynchronous (SRAM/ROM) devices with programmable timing, while the dual UART modules support full-duplex RS-232/RS-485 operation and modem control signals - all managed via memory-mapped registers accessible in supervisor or user mode.

Key Specifications

Pinout & Package

256-pin PQFP (Plastic Quad Flat Package), 28 mm × 28 mm body, 0.65 mm lead pitch, JEDEC MS-026AC compliant. Thermal pad exposed on underside for enhanced heat dissipation in high-duty-cycle applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCF5307CAI90B, the MCF5235CVM66 offers reduced integration but lower power and cost, while the MCF5473CVM66 adds modern interfaces at the expense of ColdFire v2 software compatibility and increased complexity.

Availability

MCF5307CAI90B is available at Aetrix Electronics and suitable for industrial automation, network infrastructure, and medical device applications requiring stable component supply and long-term lifecycle support.

Supply support for MCF5307CAI90B 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 MCF5307CAI90B belongs to the ColdFire family - engineered for cost-effective, low-power 32-bit embedded control where integration of memory controllers and peripherals reduces system-level design effort.

FAQ

What is the maximum operating frequency of the MCF5307CAI90B?

The MCF5307CAI90B operates at a maximum CPU frequency of 90 MHz, achieved via its integrated Phase-Locked Loop (PLL) multiplying an external 4–50 MHz reference clock. This frequency is specified under commercial temperature range (0°C to +70°C) and nominal 3.3 V supply conditions per the Freescale MCF5307UM/D Rev. 2.0 datasheet.

Does the MCF5307CAI90B include on-chip memory?

Yes, the MCF5307CAI90B integrates 8 KB of unified instruction/data cache and 4 KB of on-chip SRAM. The SRAM is directly accessible as fast memory for boot code or critical variables, while the cache improves performance when accessing external memory - both configurable via dedicated control registers (CACR and RAMBAR).

Is the MCF5307CAI90B pin-compatible with other ColdFire processors?

No, the MCF5307CAI90B is not pin-compatible with other ColdFire families such as MCF52xx or MCF54xx. Its 256-pin PQFP footprint, signal assignment (e.g., DSACKn, PSTCLK), and peripheral mapping (e.g., dual UARTs with modem control pins) are unique to the MCF5307 series and require dedicated PCB layout.

What debug interfaces does the MCF5307CAI90B support?

The MCF5307CAI90B supports IEEE 1149.1 JTAG boundary-scan testing and Freescale's Background Debug Mode (BDM) via dedicated TMS/TDI/TDO/TCK pins. BDM enables real-time register inspection, memory read/write, and breakpoint insertion without halting the CPU - essential for validating time-critical embedded firmware on the MCF5307CAI90B.

Can the MCF5307CAI90B interface directly with SDRAM?

Yes, the MCF5307CAI90B includes a synchronous DRAM controller supporting standard SDRAM devices. It provides programmable row/column address timing, burst length, and refresh control - enabling direct connection to 16- or 32-bit SDRAM without external glue logic, as confirmed in Section 1.3.2 of the MCF5307UM/D manual.