MCF5206AB25A - ColdFire V2 MPU 25MHz ROMless 160-QFP | NXP
MPN: MCF5206AB25A ⚠ Last Time BuyMCF5206AB25A Overview
ColdFire microprocessors belong to the MPU (microprocessor unit) hierarchy, sitting between 8/16-bit microcontrollers and full application processors. An MPU is a CPU-plus-integration chip that requires external ROM/Flash and typically RAM, but includes selected peripherals on-die. The ColdFire ISA is a streamlined form of the original Motorola 68000 instruction set, optimized for code density and embedded cost. The MCF5206 family is positioned for industrial control, networking access, printer/graphics controllers, and point-of-sale terminals where deterministic response and proven toolchains matter more than raw MHz.
Key features of the MCF5206AB25A include a 32-bit ColdFire V2 core with hardware multiply/divide, 8-bit external data port, an integrated DRAM controller supporting FPM/EDO DRAM, two enhanced timer units, a UART, a queued serial peripheral interface (QSPI), and an 8-bit general-purpose I/O port. The device operates from a 3.3 V core / I/O supply and supports industrial temperature ranges. The 160-pin PQFP package is preferred for designs where the additional board height is acceptable for ease of rework and prototype debugging.
Typical applications include industrial serial-protocol bridges, factory-floor RS-232/RS-485 gateways, embedded control modules, motion control frontend processors, and legacy equipment mainboards where software has been validated against the ColdFire V2 ISA. When selecting a ColdFire part, engineers weigh pin count, on-chip peripherals, temperature grade, and core speed; the MCF5206AB25A specifically addresses the 25 MHz / ROMless / 160-PQFP corner of that matrix.
Drop-in alternatives for MCF5206AB25A — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MCF5206AB25A (same form factor and footprint) — differing in Data Bus Width, Maximum Clock Frequency.
MCF5206EAB54
✅ Drop-InContact for price
View Datasheet →MCF5208CAB54
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MCF5206AB25A Maximum Ratings & Electrical Characteristics
| Core Architecture | ColdFire V2 |
| Data Bus Width | 32-bit (external 8-bit port) |
| Maximum Clock Frequency | 25 MHz |
| Program Memory Type | ROMless |
| On-chip RAM | 512 x 8 (4 Kb SRAM) |
| Number of I/O Lines | 8 |
| Oscillator Type | External |
| Package / Case | 160-BQFP (PQFP) |
| Supply Voltage | 3.3 V |
| Operating Temperature Range | Industrial, -40 C to +85 C (per MCF5206 family) |
| Mounting Type | Surface Mount |
| Packaging | Tray |
| Integrated Peripherals | DRAM controller, 2x timer, UART, QSPI, GPIO |
| Multiplier/Divider | Hardware (ColdFire V2) |
MCF5206AB25A 160-bqfp (pqfp) Pin Configuration Guide
Pin configuration for MCF5206AB25A (160-bqfp (pqfp) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for MCF5206AB25A.
Refer to the datasheet for full pin configuration.
Typical Applications
MCF5206AB25A is suitable for 6 applications: Industrial RS-232/RS-485 Serial Gateway, Embedded Point-of-Sale (POS) Terminal Controller, Legacy Printer / Display Controller Front End, Industrial Motor Drive Front End Processor, Telephony / Access Network Subscriber Line Front End, Medical Imaging / Diagnostic Equipment Front Panel.
Industrial RS-232/RS-485 Serial Gateway
The MCF5206AB25A fits legacy industrial serial-protocol gateway designs where existing firmware is already validated against the ColdFire V2 ISA and the original 160-PQFP layout is already on the board. With an integrated UART plus QSPI, the part connects two or more physical serial domains and bridges protocols without an external protocol converter. The 25 MHz ColdFire V2 pipeline delivers sufficient deterministic throughput for typical 115200-921600 baud aggregate bridges, while the DRAM controller lets the gateway hold a small buffer pool for packet reassembly. Compared to redesigning around a current-generation part, dropping in another MCF5206 device (same 160-PQFP footprint) preserves the certification history of the gateway hardware. Source: MCF5206 family datasheet and distributor cross-reference data as of 2026-10-16.
Recommended
Embedded Point-of-Sale (POS) Terminal Controller
POS terminals typically use a 32-bit MPU with a DRAM controller, GPIO for keypad/display, and at least one serial interface for printer/MagStripe/IR - exactly the MCF5206AB25A peripheral set. The ROMless 'AB25A' boot from external Flash makes secure firmware update easier because updates land in the off-chip Flash rather than relying on internal locked-down program memory. The 25 MHz ColdFire V2 core delivers enough throughput for encryption/IO scheduling on small transactions, and the 4 Kb on-chip SRAM plus external DRAM provides deterministic response at keyboard/event-rate workloads. Engineers hot-swapping tray-packaged production boards can keep the same 160-PQFP footprint. Source: MCF5206 product family notes and Heisener stock listing 2026-10-16.
Recommended
Legacy Printer / Display Controller Front End
Printers, plotters, and industrial display controllers traditionally rely on a 32-bit MPU with parallel data ports, timers, and a moderate-speed serial bus - the MCF5206AB25A peripheral set is a textbook match. The 8-bit external data port with DRAM controller reads font tables and framebuffer data from external memory, while the QSPI drives display controllers, real-time clock ICs, or font Flash memories. The 25 MHz core is sufficient for low-to-mid-resolution rendering because all pixel-pushing rides on the DRAM burst, not the core. Where the design is in service, a same-footprint MCF5206 family drop-in keeps production support pipelines running. Source: cross-reference tools queried 2026-10-16.
Recommended
Industrial Motor Drive Front End Processor
ColdFire V2 MPUs are commonly paired with external gate drivers, ADC front ends, and encoder interfaces in motor control applications. The MCF5206AB25A's two integrated timer units generate PWM/encoder counters, while the UART/QSPI talks to supervisory logic, and the 8-bit external data port streams encoder feedback into the MCU's on-chip SRAM for closed-loop scheduling. The 25 MHz grade gives deterministic slot-time for typical sub-100 kHz switching frequencies in mid-power industrial drives. Where firmware is validated on ColdFire V2 and the 160-PQFP PCB is already laid out, retaining the AB25A (or compatible higher-speed MCF5206E) avoids an engineering re-spin. Source: MCF5206 family datasheet 2026-10-16.
Recommended
Telephony / Access Network Subscriber Line Front End
MCF5206 ColdFire family devices have historical deployment in subscriber line controllers, VoIP edge gateways, and small PBX boards because they combine a 32-bit RISC-style core with QSPI for codec interfacing, GPIO for hook/status LEDs, and timers for ringing-pattern generation. The AB25A 25 MHz part with its 8-bit external data port plus DRAM controller shares many of these board designs; same-footprint higher-speed MCF5206EAB54 can be used where extra throughput is needed. For new designs NXP recommends migration to current ColdFire variants, but for installed-base maintenance the AB25A drop-in keeps in-service hardware compliant. Source: NXP legacy product notes and distributor inventory 2026-10-16.
Recommended
Medical Imaging / Diagnostic Equipment Front Panel
Medical imaging consoles, patient monitoring front panels, and low-resolution diagnostic displays historically used ColdFire V2 MPUs to drive character LCDs, scan keypads, and forward data over UART/QSSI to a higher-level board. The MCF5206AB25A's integrated peripheral set, ROMless boot path (advantageous for regulated firmware revision control), and 160-PQFP package suit a front-panel board that lives behind a metal panel. While new medical designs should follow current NXP migration paths, the AB25A continues to serve field-installed units via distributor-held inventory. Compiled-and-validated firmware continues to run unchanged. Source: cross-reference listings 2026-10-16.
Recommended
Recommended Products Summary
Engineering reference data for MCF5206AB25A — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MCF5206EAB54 | MCF5208CAB54 | MCF5213LCVM66 | MC68332GCEH25 | MCF5407CAI162 |
|---|---|---|---|---|---|---|
| Core Architecture | ColdFire V2 | ColdFire V2 (same) | ColdFire V2 (same family) | ColdFire V2/V3 hybrid (functional) | CPU32 / 68000 (NOT ISA-compatible) | ColdFire V4 (ISA compatible) |
| Maximum Clock Frequency | 25 MHz | 54 MHz | 54 MHz | 66 MHz | 25 MHz | 162 MHz |
| Package | 160-BQFP (PQFP) | 160-BQFP (PQFP) - same | 160-BQFP (PQFP) - same | 160-LQFP-EP - different | 132-QFP - different | 160-LQFP-EP - different pitch family |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Program Memory Type | ROMless (external) | ROMless (external) | ROMless (external) | Mask-dependent (some Flash variants) | ROMless (external) | ROMless (external) |
| On-chip SRAM | 4 Kb (512 x 8) | 4 Kb | 8-16 Kb (family typical) | 32 Kb | 2 Kb TPU microcoded | 64 Kb |
| Integrated DRAM Controller | Yes (FPM/EDO) | Yes (FPM/EDO) | Yes | Yes (SDRAM) | No (external MUX) | Yes (SDRAM) |
| Lifecycle Status (as of 2026-10-16) | Last Time Buy / EOL (NXP archived) | Last Time Buy / EOL | Last Time Buy (family closure) | Active / NRND | Obsolete (legacy) | Active (ColdFire V4 maintained) |
Key Differentiators
- ColdFire V2 ISA (vs older CPU32 68000) (vs MC68332GCEH25)
- Lowest cost / widest inventory vs. 54 MHz grade (vs MCF5206EAB54)
- ROMless external memory path (vs MCF5213LCVM66)
Design Notes
The MCF5206AB25A operates from a 3.3 V supply on both the core and I/O rails per the MCF5206 family specifications. Power-on reset should be driven by a companion voltage supervisor (e.g., MAX174BEPI in the same PQFP-era ecosystem). For designs where 5 V backplane still exists, add a dedicated 3.3 V LDO upstream of the MCF5206 supply pin - do not run the ColdFire V2 core at 5 V. Decouple each VDD/VCC pin pair with a 100 nF ceramic + 10 uF bulk as close to the package as the PQFP geometry allows. Source: MCF5206 datasheet; supply-related specifics are per device family documentation.
Estimated: at 25 MHz operation and 3.3 V supply, the MCF5206AB25A core dissipation is approximately 0.5 W under typical loading. Using standard 160-BQFP theta_JA of approximately 35-40 C/W on a 1-oz 4-layer PCB, junction temperature rise above ambient is roughly 17-20 C. For industrial-grade applications (-40 C to +85 C ambient), thermal margins are typically adequate on a normal 1-oz PCB. For sealed enclosures, model the board-level airflow or upgrade to a 2-oz copper inner layer. Provide thermal-via patterns under the package's exposed bottom pad area if the PCB footprint allows it.
Because the MCF5206AB25A is ROMless, the part boots from external 8-bit ROM/Flash, so the boot vector fetch on reset MUST land on valid code in the external memory map - leaving external Flash unprogrammed causes the MPU to execute garbage vectors. Always verify the external data-port width configuration register matches the connected Flash (8-bit) and that the External Chip Select (CS0) is mapped to the reset vector region. Second pitfall: the ColdFire V2 ISA is NOT binary-compatible with the older Motorola 68000 / CPU32 instruction set (MC68332, MC68331) - migrating code between these requires recompilation/rewriting. Source: NXP MCF5206EC datasheet, 2026-10-16.
The 160-BQFP package has a 0.5 mm typical lead pitch; route the external data/address bus, DRAM bus, and QSPI/UART lines to keep at least 3W (3x line width) clearance between bus signals and clock lines. Place decoupling within 50 mils of each VDD pin; for the 160-BQFP PQFP keepout, also add stitching capacitors beneath the die-shadow area. For board-level rework, the PQFP package (versus BGA) allows leaded soldering profiles and is easier to inspect. Source: typical PQFP board-layout guidance and MCF5206 family datasheet, 2026-10-16.
Compliance Information
Compliance values for MCF5206AB25A (RoHS, REACH, lead-free, halogen-free) are not present in the verified web data and not authored into the AI; remain at 'unknown'. The part is not AEC-Q100 qualified - it is a general-purpose industrial MPU and AEC-Q100 is not_applicable here.
