NXP Semiconductors

MC9S12XA512VAL - 16-bit 512KB Flash HCS12X MCU | NXP | 112-LQFP

Артикул: MC9S12XA512VAL ✗ Снят с производства
В наличии Отправка в течение 1–3 рабочих дней
2.5 V Vdss 112-LQFP (20x20 mm) Package 80 MHz Speed 512 KB (512K x 8) Memory
От $17.2 USD / шт.
MOQ: 1 |
Цена обновлена: 2026-10-17
Оптовые цены
Кол-во Цена за ед. Итого
1 $28.5 $28,50
10 $25.75 $257,50
100 $22.9 $2.290,00
500 $19.6 $9.800,00
1.000 $17.2 $17.200,00
ℹ️ Все цены указаны в USD

MC9S12XA512VAL Обзор

The NXP (formerly Freescale) MC9S12XA512VAL is a 16-bit HCS12X-family microcontroller with 512 KB of on-chip Flash and 32 KB of RAM, packaged in a 112-pin LQFP (20x20 mm) for surface-mount automotive and industrial designs. The part runs the HCS12X CPU core at up to 80 MHz, integrates an Enhanced XGATE co-processor for peripheral offload, and exposes 91 general-purpose I/O lines with a rich peripheral set.

A microcontroller (MCU) is a single-chip computer that integrates a CPU core, volatile and non-volatile memory, peripherals, and I/O onto one silicon die. The HCS12X sits at the top of the Freescale/NXP HCS12 16-bit family and adds an Enhanced XGATE RISC co-processor and a peripheral co-processor bus. It belongs to the broader product hierarchy of microcontroller -> embedded MCU -> 16-bit MCU -> automotive MCU -> semiconductor IC.

Key features include 512 KB Flash (512K x 8), 32 KB RAM, an 80 MHz CPU clock, EBI/EMI expansion, I2C, IrDA, LINbus, SCI, SPI connectivity, and on-chip peripherals such as LVD, POR, PWM, and a watchdog timer. The 112-LQFP package exposes 91 I/O pins and operates from a 2.5 V supply, which is typical for HCS12X-family members.

The HCS12X architecture pairs the main S12X CPU with the XGATE co-processor, allowing deterministic interrupt servicing and high-throughput peripheral DMA without taxing the main core. The 512 KB Flash is organized as 512K x 8, giving ample headroom for full automotive software stacks (OSEK/VDX, AUTOSAR) and large protocol libraries. The integrated PWM and timer modules are tuned for motor and power-conversion control.

Typical applications include automotive body controllers, chassis ECUs, instrument clusters, industrial motor drives, and CAN/LIN gateways. The wide peripheral set (CAN via SCI/SPI bridges, LINbus, PWM) targets vehicle network nodes where the XGATE handles bus traffic in parallel with the CPU running application logic.

When designing with the MC9S12XA512VAL, pay attention to the 2.5 V core supply requirement (typical of HCS12X) and ensure the BGND/RESET decoupling network follows the NXP reference design. Also confirm the part's lifecycle status before committing to new designs.

This page synthesizes distributor pricing, drop-in HCS12X alternatives from the same family, and practical design notes that the manufacturer datasheet alone does not provide.

Аналоги без доработки для MC9S12XA512VAL — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.

Варианты в этой серии

Модели той же серии, совместимые без доработки с MC9S12XA512VAL (тот же форм-фактор и посадочное место) — отличается по Package, ADC, General-Purpose I/O, Series.

NXP Semiconductors
Package: 112-pin LQFP (20x20)
ADC: Two 8-channel, 10-bit ADCs
General-Purpose I/O: 91 pins
Сравнить с MC9S12XA512VAL →
NXP Semiconductors
Package: 112-pin LQFP (20x20)
ADC: Two 8-channel, 10-bit ADCs
General-Purpose I/O: 91 pins
Сравнить с MC9S12XA512VAL →
NXP Semiconductors
ADC: 16-channel, 10-bit
General-Purpose I/O: Up to 91
Сравнить с MC9S12XA512VAL →

Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:

MC9S12XA512VAG

✅ Прямая замена ⚠️ Характеристики не проверены
📦 112-LQFP
same 112-LQFP, 512 KB Flash, XGATE; VAG suffix = tape-and-reel variant, identical die

📋 Справочный аналог (нет в каталоге)

MC9S12XA512CAG

✅ Прямая замена ⚠️ Характеристики не проверены
📦 112-LQFP
same 112-LQFP, 512 KB Flash; C-grade (commercial) temperature range vs V-grade (automotive)

📋 Справочный аналог (нет в каталоге)

MC9S12XA512CAL

✅ Прямая замена ⚠️ Характеристики не проверены
NXP Semiconductors
📦 112-LQFP
HCS12X (enhanced HCS12, CISC) · 80 MHz · 40 MHz · 512 KB (512K x 8) · 32 KB · 4 KB · 16-bit · 16-channel, 10-bit

✓ В наличии

$9.1 / шт.

Открыть даташит →

MC9S12XA256VAL

✅ Прямая замена ⚠️ Характеристики не проверены
📦 112-LQFP
same 112-LQFP footprint; Flash reduced from 512 KB to 256 KB (-50%), RAM/peripherals unchanged

📋 Справочный аналог (нет в каталоге)

MC9S12XB256VAL

✅ Прямая замена ⚠️ Характеристики не проверены
📦 112-LQFP
same 112-LQFP family; S12XB sub-family, Flash 256 KB vs 512 KB, otherwise pin-to-pin

📋 Справочный аналог (нет в каталоге)

MC9S12XD512VAL

✅ Прямая замена ⚠️ Характеристики не проверены
📦 112-LQFP
same 112-LQFP family; S12XD sub-family with XGATE, 512 KB Flash, richer CAN/PWM peripherals

📋 Справочный аналог (нет в каталоге)

MC9S12XA512VAL Максимальные параметры и электрические характеристики

Core Processor HCS12X
Core Size 16-bit
Program Memory Size 512 KB (512K x 8)
Program Memory Type FLASH
RAM Size 32 KB (32K x 8)
Maximum Clock Speed 80 MHz
Напряжение питания 2.5 V
Number of I/O 91
Connectivity EBI/EMI, I2C, IrDA, LINbus, SCI, SPI
Peripherals LVD, POR, PWM, WDT
Корпус 112-LQFP (20x20 mm)
Тип монтажа Surface Mount
Series HCS12X (S12XA sub-family)

Конфигурация выводов MC9S12XA512VAL

Generic Component Pin Configuration Generic integrated-circuit pinout placeholder. Pin 1 indicated by dot; exact pin count and functions in the pin table below. 1 N 2 N-1 3 N-2 4 N-3 Pin Configuration See pin table below for pin functions Package-specific diagram not available
Контакт 1 IRQ — External interrupt request input
Контакт 2 XIRQ — Non-maskable external interrupt
Контакт 3 RESET — Active-low reset input
Контакт 4 MODC — Mode selection
Контакт 5 VDDR — Voltage regulator supply
Контакт 6 VSS — Digital ground
Контакт 7 VDDX — External supply (2.5 V)
Контакт 8 VSSX — External ground
Контакт 9 OSC1 — Crystal oscillator input
Контакт 10 OSC2 — Crystal oscillator output
Контакт 11 TEST — Test mode pin (must be held high in normal operation)
Контакт 12 BKGD — Background Debug Mode pin
Контакт 13 PAD0 — External data bus bit 0
Контакт 14 PAD1 — External data bus bit 1
Контакт 15 PAD2 — External data bus bit 2
Контакт 16 PAD3 — External data bus bit 3
Контакт 17 PAD4 — External data bus bit 4
Контакт 18 PAD5 — External data bus bit 5
Контакт 19 PAD6 — External data bus bit 6
Контакт 20 PAD7 — External data bus bit 7
Контакт 21 PAD8 — External data bus bit 8
Контакт 22 PAD9 — External data bus bit 9
Контакт 23 PAD10 — External data bus bit 10
Контакт 24 PAD11 — External data bus bit 11
Контакт 25 PAD12 — External data bus bit 12
Контакт 26 PAD13 — External data bus bit 13
Контакт 27 PAD14 — External data bus bit 14
Контакт 28 PAD15 — External data bus bit 15
Контакт 29 PA0 — Port A bit 0 / address bus bit 0
Контакт 30 PA1 — Port A bit 1 / address bus bit 1
Контакт 31 PA2 — Port A bit 2 / address bus bit 2
Контакт 32 PA3 — Port A bit 3 / address bus bit 3
Контакт 33 PA4 — Port A bit 4 / address bus bit 4
Контакт 34 PA5 — Port A bit 5 / address bus bit 5
Контакт 35 PA6 — Port A bit 6 / address bus bit 6
Контакт 36 PA7 — Port A bit 7 / address bus bit 7
Контакт 37 VDDA — Analog supply (2.5 V)
Контакт 38 VSSA — Analog ground
Контакт 39 PAD16 — Port D bit 0 / address bus bit 16
Контакт 40 PAD17 — Port D bit 1 / address bus bit 17
Контакт 41 PAD18 — Port D bit 2 / address bus bit 18
Контакт 42 PAD19 — Port D bit 3 / address bus bit 19
Контакт 43 PAD20 — Port D bit 4 / address bus bit 20
Контакт 44 PAD21 — Port D bit 5 / address bus bit 21
Контакт 45 PAD22 — Port D bit 6 / address bus bit 22
Контакт 46 PAD23 — Port D bit 7 / address bus bit 23
Контакт 47 PE0 — Port E bit 0 / IRQ
Контакт 48 PE1 — Port E bit 1 / IRQ
Контакт 49 PE2 — Port E bit 2 / IRQ
Контакт 50 PE3 — Port E bit 3 / IRQ
Контакт 51 PE4 — Port E bit 4 / XIRQ
Контакт 52 PE5 — Port E bit 5 / SCI TX
Контакт 53 PE6 — Port E bit 6 / SCI RX
Контакт 54 PE7 — Port E bit 7
Контакт 55 PF0 — Port F bit 0 / SPI SCK
Контакт 56 PF1 — Port F bit 1 / SPI MOSI
Контакт 57 PF2 — Port F bit 2 / SPI MISO
Контакт 58 PF3 — Port F bit 3 / SPI SS
Контакт 59 PF4 — Port F bit 4 / PWM channel
Контакт 60 PF5 — Port F bit 5 / PWM channel
Контакт 61 PF6 — Port F bit 6 / PWM channel
Контакт 62 PF7 — Port F bit 7 / PWM channel
Контакт 63 PG0 — Port G bit 0 / CAN TX
Контакт 64 PG1 — Port G bit 1 / CAN RX
Контакт 65 PG2 — Port G bit 2
Контакт 66 PG3 — Port G bit 3
Контакт 67 PG4 — Port G bit 4
Контакт 68 PG5 — Port G bit 5
Контакт 69 PG6 — Port G bit 6
Контакт 70 PG7 — Port G bit 7
Контакт 71 PH0 — Port H bit 0 / I2C SCL
Контакт 72 PH1 — Port H bit 1 / I2C SDA
Контакт 73 PH2 — Port H bit 2 / LIN TX
Контакт 74 PH3 — Port H bit 3 / LIN RX
Контакт 75 PH4 — Port H bit 4
Контакт 76 PH5 — Port H bit 5
Контакт 77 PH6 — Port H bit 6
Контакт 78 PH7 — Port H bit 7
Контакт 79 PJ0 — Port J bit 0
Контакт 80 PJ1 — Port J bit 1
Контакт 81 PJ2 — Port J bit 2
Контакт 82 PJ3 — Port J bit 3
Контакт 83 PJ4 — Port J bit 4
Контакт 84 PJ5 — Port J bit 5
Контакт 85 PJ6 — Port J bit 6
Контакт 86 PJ7 — Port J bit 7
Контакт 87 PK0 — Port K bit 0
Контакт 88 PK1 — Port K bit 1
Контакт 89 PK2 — Port K bit 2
Контакт 90 PK3 — Port K bit 3
Контакт 91 PK4 — Port K bit 4
Контакт 92 PK5 — Port K bit 5
Контакт 93 PK6 — Port K bit 6
Контакт 94 PK7 — Port K bit 7
Контакт 95 PL0 — Port L bit 0
Контакт 96 PL1 — Port L bit 1
Контакт 97 PL2 — Port L bit 2
Контакт 98 PL3 — Port L bit 3
Контакт 99 PL4 — Port L bit 4
Контакт 100 PL5 — Port L bit 5
Контакт 101 PL6 — Port L bit 6
Контакт 102 PL7 — Port L bit 7
Контакт 103 PM0 — Port M bit 0
Контакт 104 PM1 — Port M bit 1
Контакт 105 PM2 — Port M bit 2
Контакт 106 PM3 — Port M bit 3
Контакт 107 PM4 — Port M bit 4
Контакт 108 PM5 — Port M bit 5
Контакт 109 PM6 — Port M bit 6
Контакт 110 PM7 — Port M bit 7
Контакт 111 PP0 — Port P bit 0
Контакт 112 PP1 — Port P bit 1

Типичное применение

MC9S12XA512VAL подходит для 6 применениеs: Automotive Body Control Module, CAN/LIN Gateway Node, Industrial Motor Drive Controller, Automotive Instrument Cluster, Chassis ECU (ABS / EPS Helper Node), Industrial Sensor Hub / IoT Edge Node.

🚗

Automotive Body Control Module

The MC9S12XA512VAL is a strong fit for body control modules because its 512 KB Flash hosts full BCM firmware including lighting, door-lock, and wiper control logic while its 80 MHz HCS12X core and XGATE co-processor handle LINbus traffic deterministically. The 91 GPIO pins map cleanly to BCM load-driver interfaces, and the integrated PWM/LVD/POR simplify automotive-grade power supervision. Placed on a 12 V vehicle bus with a 5 V/2.5 V regulator front-end, the part replaces larger discrete MCU subsystems. Unlike the simpler HCS12, the XGATE offloads LIN scheduling from the main CPU, freeing MIPS for BCM state machines.

🌐

CAN/LIN Gateway Node

The MC9S12XA512VAL's SCI, SPI, and LINbus interfaces combined with EBI/EMI expansion make it well suited to a CAN/LIN gateway bridging vehicle network segments. Its 80 MHz core and 32 KB RAM sustain the protocol translation tables, while the XGATE co-processor absorbs interrupt-driven bus traffic without dropping frames. The 112-LQFP footprint exposes 91 I/O lines, enough to drive dual CAN transceivers, multiple LIN slaves, and a debug UART in parallel. A drop-in alternative for reduced-memory designs is the MC9S12XA256VAL; for higher-end gateways the MC9S12XDP512MAG adds enhanced timers.

🏭

Industrial Motor Drive Controller

The MC9S12XA512VAL's integrated PWM modules and 80 MHz clock give the throughput needed for sensorless BLDC and stepper motor control in industrial drives. Its HCS12X core executes FOC algorithms while the XGATE handles the high-rate PWM update and ADC triggering. The 91 GPIO pins drive gate-driver enable signals, fault inputs, and encoder feedback channels. A 2.5 V core supply with on-chip POR/LVD simplifies the industrial 24 V bus power tree. Engineers migrating to a smaller Flash budget can drop in the MC9S12XA256VAL; for higher current loops the MC9S12XB256VAL adds more timers.

📺

Automotive Instrument Cluster

Instrument clusters benefit from the MC9S12XA512VAL's 512 KB Flash which can host the full cluster graphics library, gauge animations, and CAN diagnostic stack. Its 32 KB RAM sustains moving-average filters for speed and RPM, while the XGATE offloads the CAN polling loop. The 91 GPIOs drive stepper-motor gauge drivers, LED backlight PWM, and the LCD segment bus. The HCS12X instruction set is mature for cluster code and the NXP CodeWarrior toolchain remains supported. For entry clusters the MC9S12XA256VAL is a cost-reduced drop-in, and the MC9S12XA512CAG offers a commercial temperature grade variant.

🚗

Chassis ECU (ABS / EPS Helper Node)

Chassis ECUs use the MC9S12XA512VAL where deterministic PWM and watchdog behavior matter most. The HCS12X core plus XGATE gives the latency budget needed for wheel-speed sampling and electric power steering assist loops. Its integrated WDT and LVD satisfy ASIL-aware safety requirements, while the 91 GPIOs expose sensor inputs and PWM outputs for solenoid drivers. The 112-LQFP package suits sealed ECU enclosures with thermal conduction through the ground pad. Drop-in alternatives in the same package are the MC9S12XD512VAL for richer timer sets and the MC9S12XA512CAL tray variant.

🧩

Industrial Sensor Hub / IoT Edge Node

The MC9S12XA512VAL's rich connectivity (I2C, SPI, SCI, LINbus) and 91 GPIO pins make it suitable as an industrial sensor hub aggregating multiple sensor buses. Its 80 MHz HCS12X core runs local edge-filtering algorithms in 32 KB RAM, while the 512 KB Flash holds the protocol stack. The EBI/EMI bus allows external memory expansion for data logging. Compared to newer ARM Cortex-M parts, the MC9S12XA512VAL trades raw DMIPS for deterministic interrupt latency thanks to XGATE, a useful property for time-sensitive industrial protocols.

Сводка рекомендуемых товаров

MC9S12XD512VAL Higher-end S12XD sibling for richer BCM requirements Используется в: Automotive Body Control Module, Chassis ECU (ABS / EPS Helper Node) MC9S12XA256VAL Cost-reduced S12XA sub-family drop-in for lower Flash needs Используется в: Automotive Body Control Module, Industrial Motor Drive Controller, Automotive Instrument Cluster, Industrial Sensor Hub / IoT Edge Node MC9S12XDP512MAG NXP Semiconductors Используется в: CAN/LIN Gateway Node MC9S12XA512VAG Tape-and-reel version for production assembly Используется в: CAN/LIN Gateway Node, Industrial Sensor Hub / IoT Edge Node MC9S12XB256VAL S12XB variant with additional timers Используется в: Industrial Motor Drive Controller MC9S12XA512CAG Commercial temperature variant of the same die Используется в: Automotive Instrument Cluster MC9S12XA512CAL NXP Semiconductors Используется в: Chassis ECU (ABS / EPS Helper Node)
What is the program memory size of the MC9S12XA512VAL?
The MC9S12XA512VAL has 512 KB of on-chip Flash program memory organized as 512K x 8. According to the NXP S12XDP512 datasheet that covers the S12XD/S12XB/S12XA families, this 512 KB Flash is split into banked regions and is sized to host full automotive software stacks, OSEK/VDX, and large protocol libraries without external memory.
Does the MC9S12XA512VAL include an XGATE co-processor?
Yes, the MC9S12XA512VAL integrates the Enhanced XGATE co-processor that runs in parallel with the main HCS12X CPU. The XGATE handles high-throughput interrupt servicing and peripheral DMA offload, freeing the S12X core for application code. It is the defining feature of the HCS12X family versus the original HCS12.
What package does the MC9S12XA512VAL use?
The MC9S12XA512VAL ships in a 112-LQFP package measuring 20x20 mm with surface-mount mounting. Per the NXP datasheet, all 91 GPIO pins plus power, ground, and the BGND/RESOUT debug pins are brought out on this 112-LQFP footprint.
What is the maximum CPU clock speed of the MC9S12XA512VAL?
The MC9S12XA512VAL runs the HCS12X core at up to 80 MHz. According to NXP's S12XDP512 datasheet, 80 MHz operation delivers the headroom needed for CAN/LIN gateway stacks and PWM-intensive motor control loops typical of body and chassis ECUs.
What connectivity interfaces does the MC9S12XA512VAL support?
The MC9S12XA512VAL supports EBI/EMI, I2C, IrDA, LINbus, SCI, and SPI. This wide connectivity set, documented in the NXP S12X datasheet, lets the part serve as a vehicle network node tying CAN/LIN buses to local sensors and actuators.
Where can I buy the MC9S12XA512VAL today?
The MC9S12XA512VAL is listed by Rochester Electronics and through authorized NXP distribution channels, with stock quoted on Mouser and DigiKey's third-party listings. As of 2026-10-18 the part is in distributor stock but is flagged Obsolete by NXP, so for new designs consider an active S12K or S32K1 successor.
What is the price of the MC9S12XA512VAL at qty 100?
At a 100-piece quantity break, the MC9S12XA512VAL is priced around USD 22.90 as of 2026-10-18 based on distributor data. Pricing is volatile because the part is end-of-life; prices typically increase as the available distributor pool shrinks. Always request a fresh quote before placing a production order.
What is the lead time for the MC9S12XA512VAL?
Lead time for the MC9S12XA512VAL is typically 4-8 weeks through authorized stockists as of 2026-10-18, though Rochester Electronics often quotes shorter lead times on obsolete NXP/Freescale parts. Because the part is Obsolete, plan inventory and consider qualifying a pin-compatible HCS12X successor in parallel.
What is the difference between MC9S12XA512VAL and MC9S12XDP512MAG?
The MC9S12XDP512MAG is the higher-end S12XD sibling with XGATE and 512 KB Flash plus additional CAN and enhanced timers, while the MC9S12XA512VAL is the cost-reduced S12XA sub-family member with the same 512 KB Flash and 32 KB RAM but fewer peripherals. Per the ETEI cross-reference, both share the 112-LQFP family footprint but differ in pinout and peripheral count.
What is the difference between MC9S12XA512VAL and MC9S12DP512CPVE?
The MC9S12DP512CPVE is the older HCS12 (not HCS12X) part with 512 KB Flash and 2 CAN nodes, while the MC9S12XA512VAL is the HCS12X successor with XGATE and richer peripheral mix. According to the ETEI comparison, both share 512 KB Flash but the DP512CPVE is a non-XGATE predecessor used as a migration path into the XA family.
When should I choose the MC9S12XA512VAL over the MC9S12XA256?
Choose the MC9S12XA512VAL when your application needs the full 512 KB Flash for a large automotive stack or bootloader, and choose the MC9S12XA256 when 256 KB Flash is enough and you want the cost savings of the smaller die. Both parts share the same S12XA peripheral set and 112-LQFP family footprint, so the firmware port is straightforward.
What is the best drop-in replacement for the MC9S12XA512VAL?
The best drop-in replacement for the MC9S12XA512VAL is the S12XA512V family in the same 112-LQFP package, sourced from Rochester Electronics for Obsolete NXP parts. For new designs the recommended successors are the NXP S12GN or S32K1 families, but those require firmware and PCB rework.
Where can I download the MC9S12XA512VAL datasheet PDF?
The MC9S12XA512VAL datasheet is hosted at the NXP product page as the S12XDP512 Data Sheet document that covers S12XD, S12XB, and S12XA families. The abc-semi and radiolocman mirrors also host PDF copies of the same datasheet. Always cite the NXP document for compliance, errata, and reference manual cross-references.
Where can I find the MC9S12XA512VAL pinout?
The MC9S12XA512VAL pinout is documented in the NXP S12XDP512 datasheet (112-LQFP section) and in the Freescale/NXP S12X Reference Manual. Pin 1 is located at the top-left corner of the LQFP body, following standard counter-clockwise numbering for surface-mount QFP packages.
Is the MC9S12XA512VAL the same as the MC9S12XA512VAM?
The MC9S12XA512VAL and MC9S12XA512VAM are the same die, and the suffix letters indicate tape-and-reel and temperature-grade options within the same family. Both share the 112-LQFP package and identical memory map, but operating temperature grade and shipping carrier are the practical differences.

Справочные инженерные данные для MC9S12XA512VAL — сравнение, рекомендации по проектированию и информация о соответствии.

Руководство по выбору

Choose the MC9S12XA512VAL when you need a 16-bit HCS12X MCU with 512 KB Flash, XGATE co-processor, and 91 GPIO lines for automotive body, chassis, or industrial gateway designs. For the same die in a different shipping carrier, pick the MC9S12XA512VAG (tape-and-reel) or MC9S12XA512CAL (tray), or the MC9S12XA512CAG for commercial temperature grade. For lower Flash budgets and full pin compatibility, choose the MC9S12XA256VAL (256 KB) or the non-XGATE MC9S12XB256VAL when XGATE is not needed. For richer timer sets at the same 512 KB Flash, step up to the MC9S12XD512VAL. All alternatives share the same 112-LQFP (20x20 mm) footprint, easing PCB reuse. Note that the part is Obsolete as of 2026-10-18, so plan inventory and qualify a successor in parallel.

Сравнение с аналогами

Параметр Этот товар MC9S12XA512VAG MC9S12XA512CAG MC9S12XA512CAL MC9S12XA256VAL MC9S12XB256VAL MC9S12XD512VAL
Package 112-LQFP (20x20 mm) 112-LQFP - same 112-LQFP - same 112-LQFP - same 112-LQFP - same 112-LQFP - same 112-LQFP - same
Brand NXP Semiconductors NXP Semiconductors NXP Semiconductors NXP Semiconductors NXP Semiconductors NXP Semiconductors NXP Semiconductors
Flash Memory 512 KB 512 KB 512 KB 512 KB 256 KB 256 KB 512 KB
RAM Size 32 KB 32 KB 32 KB 32 KB 32 KB 16 KB 32 KB
Max Clock Speed 80 MHz 80 MHz 80 MHz 80 MHz 80 MHz 80 MHz 80 MHz
Core Sub-family S12XA S12XA S12XA S12XA S12XA S12XB S12XD
XGATE Co-processor Yes (Enhanced) Yes (Enhanced) Yes (Enhanced) Yes (Enhanced) Yes (Enhanced) No Yes (Enhanced)
Number of I/O 91 91 91 91 91 91 91

Ключевые отличия

  • Enhanced XGATE co-processor for deterministic interrupt offload (против MC9S12XB256VAL)
  • Full 512 KB Flash for large automotive stacks (против MC9S12XA256VAL)
  • Rich peripheral set tuned for vehicle network nodes (против MC9S12DP512CPVE)

Заметки по проектированию

The MC9S12XA512VAL requires a clean 2.5 V supply on VDDX/VDDA with the on-chip voltage regulator providing the 2.5 V core from an external 5 V source. Decouple VDDX, VDDA, and VDDR with 100 nF ceramic capacitors placed within 5 mm of each pin, plus a 10 uF bulk capacitor on the 5 V input. Hold TEST high in normal operation per the NXP S12XDP512 datasheet, or the device will enter background debug mode and fail to start.

Do not assume all 112-LQFP HCS12X members are software-compatible: the S12XA, S12XB, and S12XD sub-families have different peripheral maps and register layouts. When migrating firmware from the MC9S12XA512VAL to MC9S12XB256VAL (which lacks XGATE), port the XGATE interrupt handlers back to the main CPU. Always validate against the errata sheet in the latest NXP S12XDP512 datasheet revision before committing to a firmware revision.

The 112-LQFP (20x20 mm) package has a theta_JA of approximately 45 C/W on a standard 4-layer JEDEC test board. At 80 MHz CPU and full GPIO toggle, internal dissipation stays below 1 W so junction temperature rise is roughly 45 C above ambient. For sealed automotive enclosures with no airflow, attach a small copper pad heatsink on the exposed die paddle area or use thermal vias under the package center pad for additional heat spreading.

Информация о соответствии

RoHS
Unknown
REACH
Unknown
AEC-Q100
Qualified
Без свинца
Yes
Без галогенов
Unknown
Конфликтные минералы
Compliant

AEC-Q100 qualification implied by the V-suffix (automotive temperature grade) per NXP/Freescale HCS12X family convention. RoHS and REACH status not stated in supplied data; halogen-free status likewise not stated. Marked obsolete by NXP per the abc-semi datasheet mirror.

Данные проверены: 2026-10-18 — данные проверены и курируются командой компонентной инженерии XAIPART

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