NXP Semiconductors MCF5307AI90B

Overview

MCF5307AI90B from Freescale Semiconductor is a ColdFire® v2 32-bit microprocessor with integrated system peripherals, operating at 90 MHz CPU frequency, featuring an 8-Kbyte unified cache, 4-Kbyte on-chip SRAM, and hardware MAC unit. It serves as the central processing unit in embedded networking and industrial control systems requiring deterministic real-time response and low-power operation.

For engineers reviewing the MCF5307AI90B datasheet, MCF5307AI90B pinout, MCF5307AI90B application, or MCF5307AI90B equivalent, this page delivers verified technical context, validated pin assignments, confirmed peripheral integration (I²C, UART, DMA, PLL), and real-world use-case mappings for rapid architecture evaluation and BOM validation.

Technical Context

The MCF5307AI90B implements the ColdFire v2 core with dual-pipeline execution (IFP/OEP), integer divide unit, and clock-multiplied architecture enabling 90 MHz operation from a 15 MHz crystal input via its integrated PLL. Its System Integration Module (SIM) provides chip-select logic, interrupt controller, watchdog timer, and JTAG debug interface.

Peripheral integration includes two UART modules supporting asynchronous serial communication, an I²C module compliant with Philips I²C specification, a 3-channel DMA controller, and a programmable 16-bit parallel port. All peripherals are memory-mapped and accessible via the 32-bit address/data multiplexed external bus interface.

Key Specifications

Pinout & Package

Package: 256-pin Plastic Ball Grid Array (PBGA), 27 mm × 27 mm, 1.27 mm pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCF5307AI90B, MCF5307CZQ90 offers identical functionality in a thermally enhanced package, while MCF5235CAG120 delivers higher clock rate and cache but demands full hardware/software requalification - making the former a drop-in replacement and the latter a next-generation migration path.

Availability

MCF5307AI90B is available at Aetrix Electronics and suitable for industrial automation, network infrastructure, and medical device applications requiring stable component supply across long product lifecycles.

Supply support for MCF5307AI90B 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 MCF5307AI90B belongs to the ColdFire family - a line of cost-optimized 32-bit microprocessors targeting deterministic real-time control in resource-constrained embedded systems.

FAQ

What is the maximum operating frequency of the MCF5307AI90B?

The MCF5307AI90B operates at a maximum CPU frequency of 90 MHz. This speed is achieved using an internal phase-locked loop (PLL) that multiplies a 15 MHz crystal input by a factor of six. The device's electrical specifications guarantee timing compliance up to this rated frequency under specified voltage (3.3 V ±0.3 V) and temperature (0°C to +85°C) conditions. The MCF5307AI90B does not support overclocking beyond 90 MHz.

Does the MCF5307AI90B include on-chip memory, and how is it mapped?

Yes, the MCF5307AI90B integrates 4-Kbyte of on-chip SRAM, mapped contiguously from address 0x0000_0000 to 0x0000_0FFF. This memory is directly accessible by the CPU with zero-wait-state performance and is commonly used for stack, heap, and critical real-time variables. In addition, the MCF5307AI90B features an 8-Kbyte unified cache supporting both instruction and data storage, configurable in write-through or copyback mode. Both memory resources are integral to the MCF5307AI90B architecture and require no external components.

Can the MCF5307AI90B operate without external DRAM or Flash memory?

The MCF5307AI90B can execute code from external memory only - it lacks internal non-volatile program storage. While its 4-Kbyte SRAM and 8-Kbyte cache support runtime data and temporary code buffering, boot code must be loaded from external Flash (via chip-select CS0–CS7) or fetched over the external bus from a host. The MCF5307AI90B includes a DRAM controller but does not mandate DRAM usage; systems may rely solely on SRAM and Flash if application size permits. No internal ROM or Flash exists in the MCF5307AI90B.

What debug interfaces does the MCF5307AI90B support?

The MCF5307AI90B supports IEEE 1149.1 JTAG Test Access Port (TAP) for boundary-scan testing and Background Debug Mode (BDM) for real-time in-circuit debugging. BDM enables non-intrusive code download, breakpoint insertion, register inspection, and memory read/write without halting peripheral operation. The MCF5307AI90B uses dedicated BDM pins (BKPT, TDI, TDO, TMS, TCK) compatible with standard Freescale BDM cables and third-party debug probes. This debug capability is built into the silicon and requires no additional firmware or bootloader support in the MCF5307AI90B.

Is the MCF5307AI90B pin-compatible with other ColdFire processors like the MCF5206 or MCF5407?

No, the MCF5307AI90B is not pin-compatible with the MCF5206 or MCF5407 families. It uses a unique 256-ball PBGA footprint with distinct signal assignments, power distribution, and peripheral mapping. For example, the MCF5206 employs a 176-pin PQFP package with different UART and I²C pin locations, while the MCF5407 uses a 272-ball PBGA with incompatible memory bus signaling and clocking architecture. Migration between these families requires PCB redesign and full software revalidation. The MCF5307AI90B's pinout is specific to its ColdFire v2 implementation and documented in Section 15 ("Mechanical Data") of the MCF5307UM/D manual.