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NXP Semiconductors PXAG30KFBD,157
- Part No.:
- PXAG30KFBD,157
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 44-LQFP
- Datasheet:
-
PXAG30KFBD,157.pdf
- Description:
- IC MCU 16BIT ROMLESS 44LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,290
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Product details
Overview
PXAG30KFBD,157 from NXP Semiconductors (formerly Philips Semiconductors) is a 16-bit XA architecture microcontroller designed for high-performance embedded control. It features 512 B on-chip RAM, a watchdog timer, two enhanced UARTs, and operates across –40 °C to +85 °C in a 44-pin LQFP package. It supports 20-bit addressing (1 MB program/data space), 2.7–5.5 V supply, and three counter/timers - used in industrial automation interfaces requiring deterministic serial communication and external bus expansion.
For engineers reviewing the PXAG30KFBD,157 datasheet, PXAG30KFBD,157 pinout, PXAG30KFBD,157 application, or PXAG30KFBD,157 equivalent, key selection criteria include its extended 16-bit instruction set with 16×16 multiply/32÷16 divide, dual UART interrupt handling, programmable I/O port configurations, and compatibility with legacy 80C51 code migration paths.
Technical Context
The PXAG30KFBD,157 implements the XA (eXtended Architecture) core - a fully static 16-bit CPU with 24-bit address capability (configured to 20-bit in this variant), eight general-purpose 16-bit registers, and segmented memory support. Its architecture enables real-time multitasking via up to 32 vectored interrupts and banked registers for fast context switching.
It integrates two independent UARTs with 9-bit mode, automatic address recognition, and break detection; Timer 2 supports capture, auto-reload (up/down), and baud rate generation; and the watchdog timer uses a dedicated WDCON register with programmable timeout prescaling. All timers share a common TCLK source selectable as Osc/4, Osc/16, or Osc/64.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Architecture | 16-bit XA core with 20-bit address bus (1 MB program/data space); upward-compatible with 80C51 instruction set. |
| RAM | 512 bytes on-chip static RAM; supports banked data segments and indirect addressing modes. |
| Supply Voltage | 2.7 V to 5.5 V; enables operation in both battery-powered and industrial 5 V systems without level-shifting. |
| Timers | Three 16-bit timers: T0/T1 (80C51-compatible modes + enhanced Mode 0), T2 (capture/auto-reload/baud gen). |
| UARTs | Two full-duplex UARTs with separate control/status registers, 9-bit addressing, and multiprocessor communication support. |
| Operating Temp | –40 °C to +85 °C; qualified for extended-temperature industrial control and automotive under-hood auxiliary modules. |
| I/O Ports | Four 8-bit ports (P0–P3), each with user-configurable output types (quasi-bidirectional, push-pull, open-drain, input-only). |
Pinout & Package
Package: 44-pin LQFP (plastic low profile quad flat package), body size 10 × 10 × 1.4 mm, lead pitch 0.8 mm, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | TxD1 | Transmit data output for UART1; supports asynchronous serial communication at programmable baud rates. |
| 2 | T2 | Timer 2 external clock input or clock-out signal; enables precise event timing or waveform generation. |
| 3 | T2EX | Timer 2 reload/capture/counter direction control; used for gated counting or edge-triggered capture. |
| 4 | RST | Active-low reset input; initiates hardware reset, clearing SFRs and restarting execution from vector 0000H. |
| 5 | RxD0 | Receive data input for UART0; compatible with RS-232/RS-485 transceivers via level translation. |
| 7 | TxD0 | Transmit data output for UART0; supports simultaneous dual-serial channel operation (e.g., diagnostics + fieldbus). |
| 10 | T0 | Timer 0 external count input or overflow output; used for pulse-width measurement or periodic interrupt generation. |
| 11 | T1/BUSW | Timer 1 external count input or bus width select latch; defines 8-bit vs. 16-bit external data bus configuration at reset. |
| 12 | WRL | External data memory low-byte write strobe; active-low signal for 8-bit wide external RAM writes. |
| 13 | RD | External data memory read strobe; controls access timing to external peripherals or memory devices. |
| 14 | XTAL2 | Oscillator amplifier output; drives external crystal or ceramic resonator (typically 1–20 MHz). |
| 15 | XTAL1 | Oscillator amplifier input; completes Pierce oscillator circuit with external timing component. |
| 16 | VSS | Digital ground reference; requires low-impedance connection to PCB ground plane for noise immunity. |
| 17 | VDD | Primary power supply (2.7–5.5 V); decoupling capacitor (100 nF) required near pin for stable core operation. |
| 29 | EA/WAIT | External access enable / wait input; latched low at reset to force external program memory use; later functions as wait-state extension. |
| 30–37 | P0.7–P0.0 | Multiplexed address/data bus (AD7–AD0); provides lower 8 bits of address and data during external memory cycles. |
| 38 | VDD | Secondary power supply pin; improves power integrity for I/O sections and reduces voltage drop under load. |
| 39 | VSS | Secondary ground pin; separates analog-sensitive oscillator path from digital I/O return currents. |
| 40 | A0/WRH | Address bit 0 or high-byte write strobe; selects 8-bit vs. 16-bit external bus mode when BUSW = 0 or 1. |
| 44 | RxD1 | Receive data input for UART1; enables concurrent dual-serial protocol stacks (e.g., Modbus RTU + custom telemetry). |
Key Features
| Feature | Design Value |
|---|---|
| 16×16 Multiply / 32÷16 Divide | Hardware-accelerated arithmetic enables efficient motor control algorithms and real-time filtering without software emulation overhead. |
| Programmable I/O Port Configurations | Each port pin independently configurable as quasi-bidirectional, push-pull, open-drain, or input-only - simplifies interface to diverse peripherals (LEDs, sensors, optocouplers). |
| Dual UART with Multiprocessor Mode | Supports automatic address recognition and broadcast filtering - essential for distributed industrial networks with multiple slave nodes. |
| Watchdog with Programmable Timeout | WDCON register allows 3-bit prescaler selection (8–64× base timeout), enabling robust system recovery tuned to application-specific fault detection windows. |
| External Bus Interface | Configurable 8-/16-bit data bus with ALE, PSEN, RD, WRL, and WAIT signals - supports direct connection to SRAM, EPROM, or FPGA co-processors. |
Applications
| Industrial PLC I/O Module | Automotive Body Control Unit |
|---|---|
Use Scenario: Modular I/O expansion card in programmable logic controllers handling analog/digital sensor inputs and relay outputs. IC Role / Device Role / Timing Role: Main controller managing dual UART-based fieldbus (e.g., CAN-to-RS485 bridge), external EEPROM logging, and real-time GPIO scanning. Use Value: 20-bit addressing enables direct access to 1 MB of external configuration memory; dual UARTs allow simultaneous HMI and master network communication. | Use Scenario: Central body controller coordinating door locks, lighting, window lifts, and HVAC subsystems in entry-level vehicles. IC Role / Device Role / Timing Role: Real-time coordinator using Timer 2 for PWM dimming control and UART0 for diagnostic OBD-II messaging. Use Value: –40 °C to +85 °C rating ensures reliability in under-dash environments; watchdog timer prevents firmware lockup during EMI events. |
| Medical Infusion Pump Controller | Smart Energy Meter Communication Hub |
Use Scenario: Safety-critical infusion pump requiring precise motor timing, serial diagnostics, and non-volatile parameter storage. IC Role / Device Role / Timing Role: Primary MCU executing closed-loop flow control, driving stepper motor via Timer 2 PWM, and reporting status over UART1. Use Value: Hardware multiply/divide accelerates PID computation; watchdog ensures fail-safe shutdown if control loop stalls. | Use Scenario: Two-way communication module in smart electricity meters interfacing with AMI networks and local displays. IC Role / Device Role / Timing Role: Protocol translator between metrology ASIC (SPI) and RF/GPRS modem (UART0), with UART1 reserved for local debug port. Use Value: Dual UARTs eliminate need for external UART expanders; 2.7–5.5 V operation accommodates wide-range supercapacitor backup supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAF-XE164HN-40F80LAA | 32-bit C166-derived core, 80 MHz, 512 KB Flash, integrated CAN, no external bus interface. | Targets CAN-based automotive networks; lacks external memory interface and dual UART flexibility of PXAG30KFBD,157. | Select when CAN physical layer integration and higher compute throughput outweigh need for external bus expansion. |
| MC9S12XDP512MAL | 16-bit HCS12X core, 50 MHz, 512 KB Flash, 32 KB RAM, LIN/CAN, no external bus interface. | Optimized for automotive LIN/CAN clusters; lacks XA's 20-bit addressing and dual UART multiprocessor mode. | Prefer for cost-sensitive automotive body electronics where CAN/LIN compliance is mandatory and external memory not required. |
Compared with SAF-XE164HN-40F80LAA and MC9S12XDP512MAL, the PXAG30KFBD,157 uniquely combines 20-bit external memory addressing, dual UARTs with multiprocessor support, and programmable I/O configurations - making it optimal for industrial gateways and legacy-system upgrades requiring flexible peripheral interfacing.
Availability
PXAG30KFBD,157 is available at Aetrix Electronics and suitable for industrial automation interfaces, automotive body control units, and medical device controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PXAG30KFBD,157 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 company formed from the spin-off of Philips Semiconductors in 2006, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The PXAG30KFBD,157 belongs to the legacy XA 16-bit microcontroller product line, originally developed by Philips to provide an upward-compatible, high-performance migration path from 80C51 for industrial and automotive embedded applications requiring deterministic real-time control and external memory expansion.
FAQ
What is the operating voltage range supported by the PXAG30KFBD,157?
The PXAG30KFBD,157 operates over a supply voltage range of 2.7 V to 5.5 V. This wide range allows direct integration into both low-power battery-operated systems and standard 5 V industrial control rails without external regulators. The device maintains full functionality-including all timers, UARTs, and I/O configurations-across this entire range, as verified in the DC Electrical Characteristics section of the official datasheet.
Does the PXAG30KFBD,157 include on-chip program memory?
No, the PXAG30KFBD,157 does not include on-chip program memory. As confirmed in the EA/WAIT pin description and ordering information, the device requires external program memory, and the EA pin must be held low at reset to enable external code execution. This design enables flexible firmware updates and large application code storage using external EPROM or Flash, consistent with its role in industrial systems needing field-upgradable logic.
How many UART interfaces does the PXAG30KFBD,157 provide, and what advanced features do they support?
The PXAG30KFBD,157 provides two fully independent UART interfaces (UART0 and UART1). Each supports 9-bit addressing mode, automatic address recognition, multiprocessor communication, break detection, and separate transmit/receive interrupt flags. These features are implemented in dedicated SFRs (S0CON/S1CON, S0STAT/S1STAT) and enable robust multi-node serial networks-such as Modbus RTU or custom industrial protocols-without external UART expansion ICs.
What is the function of the BUSW pin (P3.5) on the PXAG30KFBD,157?
The BUSW pin (P3.5) on the PXAG30KFBD,157 determines the default external data bus width at reset: a logic low configures an 8-bit bus, while a logic high configures a 16-bit bus. Its value is latched during reset release and stored in the BCR register. This hardware-selectable bus width simplifies board design for varying memory/peripheral requirements and eliminates software configuration overhead during initialization.
Can the PXAG30KFBD,157 operate in low-power modes, and how is power reduction managed?
Yes, the PXAG30KFBD,157 supports low-power operation through dedicated IDLE and POWER DOWN modes controlled by the PCON register (bit PD = power down, bit IDL = idle). In IDLE mode, the CPU halts while peripherals (timers, UARTs, interrupts) remain active; in POWER DOWN mode, the oscillator stops entirely. Both modes are exited via interrupt or hardware reset. This capability is intrinsic to the XA architecture and documented in the Power Reduction Modes section of the datasheet.
PXAG30KFBD,157 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 44-LQFP
- Series:
- XA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- XA
- Core Size:
- 16-Bit
- Speed:
- 30MHz
- Connectivity:
- UART/USART
- Peripherals:
- PWM, WDT
- Number of I/O:
- 32
- Program Memory Size:
- -
- Program Memory Type:
- ROMless
- EEPROM Size:
- -
- RAM Size:
- 512 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- -
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
PXAG30KFBD,157 FAQ
1.How can I place an order for PXAG30KFBD,157 through Aetrix?
Please submit a Request for Quotation (RFQ) for PXAG30KFBD,157 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for PXAG30KFBD,157 reliable?
The price and inventory of PXAG30KFBD,157 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PXAG30KFBD,157 is usually 5 days.
3.What payment methods are accepted for PXAG30KFBD,157?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PXAG30KFBD,157 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PXAG30KFBD,157?
PXAG30KFBD,157 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PXAG30KFBD,157 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for PXAG30KFBD,157?
For technical support, including PXAG30KFBD,157 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PXAG30KFBD,157 requirements.
6.How does Aetrix verify that PXAG30KFBD,157 is sourced from the original manufacturer or authorized distributors?
All PXAG30KFBD,157 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PXAG30KFBD,157 meets industry standards.
7.What is the process for return or replacement of PXAG30KFBD,157?
All PXAG30KFBD,157 units undergo pre-shipment inspection (PSI). If there is an issue with PXAG30KFBD,157, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The PXAG30KFBD,157 part is unused and in its original packaging.
Return procedure for PXAG30KFBD,157:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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