NXP Semiconductors MC68SEC000AA10R2

Overview

MC68SEC000AA10R2 from Motorola (later Freescale) is a static 32-bit embedded microprocessor designed for ultra-low-power portable systems. It delivers pin-for-pin and object-code compatibility with the MC68EC000, operates at 10 MHz, supports 3.3V/5.0V supply, features 24-bit address/16-bit data bus, and achieves 0.5 µA standby current - enabling use in battery-powered PDAs, handheld test equipment, and electronic games.

For engineers reviewing the MC68SEC000AA10R2 datasheet, MC68SEC000AA10R2 pinout, MC68SEC000AA10R2 application, or MC68SEC000AA10R2 equivalent, key selection criteria include static operation capability, dual-voltage support, interrupt-level handling (IPL0–IPL2), autovectoring (AVEC), and compatibility with M68000-family development tools and legacy codebases.

Technical Context

The MC68SEC000AA10R2 implements a fully static HCMOS version of the M68000 architecture, enabling clock stoppage without state loss. Its bus controller supports asynchronous transfers via AS, DTACK, UDS/LDS, and R/W signals, with programmable 8-/16-bit data width selected by the MODE pin.

It provides seven interrupt levels (including nonmaskable Level 7), automatic vectoring via AVEC input, and three-state function code outputs (FC2–FC0) indicating supervisor/user mode and address space. The processor maintains full M68000 instruction set compatibility - 56 instruction types, 14 addressing modes, and memory-mapped I/O - while targeting cost-sensitive, low-power embedded designs.

Key Specifications

Pinout & Package

MC68SEC000AA10R2 is supplied in a 64-lead Thin Quad Flat Pack (TQFP) with 0.5 mm lead pitch and 10.0 mm × 10.0 mm body size - optimized for portable, battery-operated applications requiring minimal footprint and thermal mass.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC68EC000RC16, the MC68SEC000AA10R2 enables true zero-power sleep states; compared with MC68332ACPV16, it preserves legacy software investment and simplifies external memory expansion - making it optimal for cost-sensitive, battery-constrained M68000 ecosystem upgrades.

Availability

MC68SEC000AA10R2 is available at Aetrix Electronics and suitable for handheld test equipment, portable digital assistants, electronic gaming consoles, and industrial handheld terminals requiring stable component supply and long-term obsolescence management.

Supply support for MC68SEC000AA10R2 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

Motorola Semiconductor (later Freescale Semiconductor) was a pioneering developer of 32-bit embedded microprocessors and communications ICs, known for the M68000 family and automotive-grade controllers.

The MC68SEC000AA10R2 belongs to Motorola's static embedded processor line, engineered specifically to extend battery life in portable consumer and industrial electronics while maintaining full software and hardware compatibility with the widely deployed MC68EC000 platform.

FAQ

What is the operating voltage range supported by the MC68SEC000AA10R2?

The MC68SEC000AA10R2 supports dual-supply operation at either 3.3 V or 5.0 V nominal - allowing direct integration into both modern low-voltage systems and legacy 5V designs without level-shifting circuitry. This flexibility is confirmed in the official Motorola product brief and ordering information table, where both voltage options are explicitly listed for the AA10R2 speed grade.

Is the MC68SEC000AA10R2 pin-compatible with the MC68EC000?

Yes, the MC68SEC000AA10R2 is pin-for-pin compatible with the MC68EC000 in the 64-lead plastic QFP and TQFP packages. This compatibility is explicitly stated in the Motorola product brief under "Direct Replacement" features and verified in the shared package diagram (Figure 3), which applies identically to both parts. Signal names, pin positions, and electrical characteristics align across both devices.

What is the significance of the "static" architecture in the MC68SEC000AA10R2?

The static architecture of the MC68SEC000AA10R2 allows the internal clock to be stopped indefinitely while retaining full register and memory state - enabling true zero-power standby. This is distinct from dynamic CMOS processors that require periodic refresh. The product brief confirms typical standby current of just 0.5 µA at 3.3 V, directly enabled by this static design.

Does the MC68SEC000AA10R2 support 8-bit or 16-bit data bus operation?

The MC68SEC000AA10R2 supports both 8-bit and 16-bit data bus configurations, selected statically via the MODE pin. When MODE = high, the full 16-bit data bus (D15–D0) is active; when MODE = low, only D7–D0 are used. This is documented in the "Signal Description" section and enables flexible interfacing with either 16-bit memories or legacy 8-bit peripherals.

What interrupt capabilities does the MC68SEC000AA10R2 provide?

The MC68SEC000AA10R2 provides seven priority-encoded interrupt levels (IPL0–IPL2 inputs), including a nonmaskable Level 7. It supports automatic vectoring via the AVEC input, eliminating software-based vector table lookups. These features are detailed in the "Interrupt Control" section of the product brief and enable deterministic, low-latency response to real-time events in embedded control applications.