NXP Semiconductors PXAS30KBA,512

Overview

PXAS30KBA,512 from NXP Semiconductors is a 16-bit OTP-based microcontroller with 32 KB on-chip program memory, 1 KB RAM, 8-channel 8-bit A/D converter (4.46 µs conversion at 30 MHz), I²C interface, dual UARTs, and 16 MB external address space - used in industrial motor control, sensor data acquisition, and embedded instrumentation requiring low-voltage operation (2.7–5.5 V) and deterministic timing.

For engineers reviewing the PXAS30KBA,512 datasheet, PXAS30KBA,512 pinout, PXAS30KBA,512 application, or PXAS30KBA,512 equivalent, key selection considerations include its 68-pin PLCC package, 30 MHz max clock, OTP programmability, integrated PCA (5-channel), watchdog timer, and support for both 8-bit and 10-bit A/D modes with automatic channel scanning.

Technical Context

The PXAS30KBA,512 implements an enhanced XA CPU core with 24-bit external addressing capability, enabling direct access to up to 16 MB of off-chip memory via multiplexed address/data bus (Port 0/2/4/6). Its A/D subsystem supports single-scan and continuous-scan modes with software-configurable resolution (8- or 10-bit), while the Programmable Counter Array provides five independent 16-bit capture/compare modules for PWM, time-stamping, and frequency measurement.

It integrates two fully independent UARTs with separate baud rate generators, an I²C master/slave controller with byte-oriented protocol handling, and three standard timers plus Timer 2 with reload/capture functionality - all operating within the same 2.7–5.5 V supply range and supporting Idle/Power-down low-power modes with wake-up via external interrupt.

Key Specifications

Pinout & Package

68-pin PLCC (SOT188-2) package with 50 general-purpose I/O pins, dedicated analog power/ground (AVDD/AVSS), reference inputs (AVREF+/AVREF−), and external bus interface signals including A0–A23, RD, WRH/WRL, PSEN, ALE, and EA/WAIT/VPP.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with MB90F387G and HD64F3687F, the PXAS30KBA,512 offers native I²C support, faster 30 MHz operation, and OTP security - making it optimal for new designs needing robust serial peripheral integration and firmware protection without external memory.

Availability

PXAS30KBA,512 is available at Aetrix Electronics and suitable for industrial motor control, sensor data acquisition, and embedded instrumentation requiring stable component supply, long-term lifecycle assurance, and commercial-temperature-grade reliability.

Supply support for PXAS30KBA,512 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

NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications.

The PXAS30KBA,512 belongs to the XA-S3 family of high-performance 16-bit microcontrollers designed for deterministic real-time control in resource-constrained embedded systems with mixed-signal requirements.

FAQ

What is the maximum operating frequency of the PXAS30KBA,512?

The PXAS30KBA,512 operates at up to 30 MHz across its full 2.7–5.5 V supply range. This frequency is supported by internal timing architecture that maintains stable instruction execution and peripheral synchronization, including A/D conversion completion in 4.46 µs and consistent UART baud rate generation. The PXAS30KBA,512 achieves this performance without requiring external PLL circuitry.

Does the PXAS30KBA,512 support hardware I²C communication?

Yes, the PXAS30KBA,512 includes a dedicated I²C-bus serial I/O port with full master and slave functionality, implemented on P5.6 (SCL) and P5.7 (SDA). It supports byte-oriented transfers, arbitration, and clock stretching per I²C specification. The PXAS30KBA,512's I²C controller is register-mapped and does not require bit-banging, enabling reliable communication with sensors, EEPROMs, and other I²C peripherals.

How many analog input channels does the PXAS30KBA,512 have, and what resolution options are available?

The PXAS30KBA,512 features eight analog input channels (AD0–AD7) on Port 5, with selectable 8-bit or 10-bit conversion resolution. In 8-bit mode, conversion completes in 4.46 µs at 30 MHz; 10-bit mode provides higher precision at the cost of longer conversion time and requires reading LSBs from the ADRSL register. The PXAS30KBA,512 requires external AVREF+ and AVREF− references for accurate A/D operation.

What package type is used for the PXAS30KBA,512, and is it pin-compatible with other XA-S3 variants?

The PXAS30KBA,512 uses a 68-pin Plastic Leaded Chip Carrier (PLCC) package per SOT188-2 mechanical drawing. It shares identical pinout and electrical characteristics with other 68-pin XA-S3 OTP variants (e.g., PXAS33KBA, PXAS37KBA), differing only in maximum clock rating (30/33/37 MHz). The PXAS30KBA,512 is not pin-compatible with the 80-pin PQFP variants (e.g., PXAS30KBBE) due to different pin counts and layout.

Can the PXAS30KBA,512 operate from a 3.3 V supply, and what are the implications for I/O and A/D performance?

Yes, the PXAS30KBA,512 operates over 2.7–5.5 V, including standard 3.3 V systems. At 3.3 V, all digital I/O remains 5 V tolerant only if explicitly configured per datasheet DC characteristics; analog performance depends on AVDD = 3.3 V and AVREF+ ≤ AVDD. The PXAS30KBA,512's A/D accuracy and conversion speed remain specified across the full voltage range, and the 30 MHz maximum frequency is guaranteed at 3.3 V per manufacturer characterization data.