NXP Semiconductors

S912XEQ512J3VAG - 16-Bit 50MHz S12X MCU, 512KB Flash | NXP

Référence : S912XEQ512J3VAG ✓ Actif
En stock Expédié sous 1 à 3 jours ouvrés
1.8 V / 2.8 V / 5 V Vdss 144-LQFP (20x20 mm) Package 50 MHz Speed 512 KB (512K x 8) Memory
À partir de $10.75 USD / unité
MOQ : 1 |
Prix mis à jour : 2026-10-19
Tarifs dégressifs
Qté Prix unitaire Total
1 $18.45 $18,45
10 $16.2 $162,00
100 $13.85 $1 385,00
500 $12.1 $6 050,00
1 000 $10.75 $10 750,00
ℹ️ Tous les prix sont en USD

S912XEQ512J3VAG Présentation

The NXP S912XEQ512J3VAG is a 16-bit HCS12X microcontroller (MCU) running at up to 50 MHz core frequency, integrating 512 KB of on-chip Flash and an XGATE co-processor, housed in a 144-pin LQFP (20x20 mm) package. The device operates from a wide 1.8 V / 2.8 V / 5 V supply rail set and is qualified to the AEC-Q100 automotive standard, targeting harsh-environment body and chassis applications.

An MCU (microcontroller) is a single-chip computer that integrates a CPU core, program and data memory, and a rich set of programmable peripherals into one device. The HCS12X family is NXP's enhanced 16-bit CISC core architecture used in automotive body electronics, combining deterministic interrupt handling with the XGATE peripheral co-processor that offloads interrupt-driven tasks and emulates additional virtual peripherals. Within the broader taxonomy, this part sits as: HCS12X CPU -> 16-bit MCU -> microcontroller -> embedded processor -> semiconductor IC.

Key features include 512 KB Flash, 32 KB SRAM, 4 KB EEPROM, an XGATE co-processor for offloading interrupt service routines, a memory protection unit with supervisor/user modes, and a flexible peripheral set including CAN, SCI/SPI, PWM, timers, and an 8/10/12-bit ADC. The 50 MHz CPU provides up to 50 MIPS throughput for real-time control loops, while wide supply flexibility allows direct connection to 3.3 V or 5 V automotive buses.

Typical applications include automotive body controllers, gateway modules, instrument clusters, HVAC control modules, and industrial PLC nodes where deterministic 16-bit performance and automotive qualification matter. A 144-pin LQFP footprint gives generous I/O access for multi-CAN and LIN networks plus analog sensor inputs. Use external NPN/PNP drivers when controlling LEDs, solenoids, or relays since the I/O pins source/sink only modest current. Verify QSPI timing with the bus clock and place bulk decoupling capacitors within 5 mm of the power pins to ride out cranking transients on the 12 V supply.

Alternatives de remplacement direct pour S912XEQ512J3VAG — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.

Variantes de cette série

Modèles de la même série directement compatibles avec S912XEQ512J3VAG (même facteur de forme et même empreinte) — différant par Package, Operating Temperature, Core, EEPROM, Mounting Type.

NXP Semiconductors
Package: 80-pin LQFP (14x14 mm)
Operating Temperature: -40C to +85C (MAA suffix)
Comparer avec S912XEQ512J3VAG →
NXP Semiconductors
Package: 144-pin LQFP (20x20 mm)
Operating Temperature: -40C to +125C (automotive)
Core: HCS12X (16-bit)
Comparer avec S912XEQ512J3VAG →
NXP Semiconductors
Package: 112-LQFP (20x20 mm)
Operating Temperature: -40 C to +85 C (industrial, J grade)
Core: S12X (16-bit HCS12X family)
Comparer avec S912XEQ512J3VAG →
NXP Semiconductors
Package: 144-terminal QFP, square, gull-wing
Operating Temperature: -40 C to +125 C
Core: S12X (HCS12X) 16-bit
Comparer avec S912XEQ512J3VAG →
NXP Semiconductors
Package: LQFP-112 (20 mm x 20 mm, 0.65 mm pitch)
Operating Temperature: -40 °C to +125 °C
Core: S12XE (16-bit CISC main CPU + XGATE co-processor)
Comparer avec S912XEQ512J3VAG →
NXP Semiconductors
Operating Temperature: -40C to +125C (automotive grade)
EEPROM: Hardware-emulated via Flash
Mounting Type: Surface Mount (LFQFP, gull-wing)
Comparer avec S912XEQ512J3VAG →
NXP Semiconductors
EEPROM: Hardware-emulated, programmable (size per datasheet)
Comparer avec S912XEQ512J3VAG →

Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :

S912XEQ512J2MAL

✅ Remplacement direct
NXP Semiconductors
📦 144-LQFP
S12XE (16-bit CISC main CPU + XGATE co-processor) · 512 KB · 50 MHz · 1.8 V / 2.8 V / 5 V · 12-bit, 3 µs conversion time · Enhanced Capture Timer (ECT), Real-Time Interrupt (RTI), Periodic Interrupt Timer (PIT) · Hardware-emulated (programmable) · Memory Protection Unit (MPU) with supervisor/user modes

✓ En stock

$17.95 / unité

Voir la fiche technique →

S912XET512J3MAG

✅ Remplacement direct
NXP Semiconductors
📦 144-LQFP
HCS12X (S12XE family) · 16-bit S12X CPU with XGATE co-processor · 50 MHz · 512 KB Flash (512K x 8) · 32 KB · Hardware-emulated via Flash · 12-bit · 3 microseconds

✓ En stock

$16.4 / unité

Voir la fiche technique →

S912XEQ384J3CALR

✅ Remplacement direct
NXP Semiconductors
📦 144-LQFP
S12X (16-bit HCS12X family) · 50 MHz · 384 KB (384K x 8) · 24 KB · Yes (hardware-emulated EEE) · 91 · 112-LQFP (20x20 mm) · Surface Mount

✓ En stock

$11.4 / unité

Voir la fiche technique →

MC9S12XEQ512MAG

✅ Remplacement direct
NXP Semiconductors
📦 144-LQFP
HCS12X (16-bit) · XGATE (RISC peripheral engine) · 50 MHz · 512 KB · Hardware-emulated EEPROM via Flash · 12-bit, 3 us conversion time · ECT, PIT, RTI

✓ En stock

$9.75 / unité

Voir la fiche technique →

MC9S12XEG128MAA

✅ Remplacement direct
NXP Semiconductors
📦 144-LQFP
HCS12X (S12X CPU + XGATE co-processor) · 16-bit CISC · 50 MHz · 128 KB (128K x 8) · 12 KB · 2 KB · 1.8V / 2.8V / 5V (single supply 5V) · 12-bit, 16 channels, 3 us conversion time

✓ En stock

$8.9 / unité

Voir la fiche technique →

S912XEQ512J3VAG Valeurs maximales et caractéristiques électriques

Core Architecture HCS12X (16-bit CISC)
Maximum CPU Frequency 50 MHz
Program Memory (Flash) 512 KB (512K x 8)
XGATE Co-processor Yes
Memory Protection Unit Yes (supervisor/user modes)
Operating Voltage 1.8 V / 2.8 V / 5 V
Plage de température de fonctionnement -40 C to +105 C (Automotive Grade 1)
Boîtier 144-LQFP (20x20 mm)
Type de montage Surface Mount
AEC-Q100 Qualification Qualified
Statut RoHS Compliant

Configuration des broches de S912XEQ512J3VAG

LQFP-144 Package Pinout Diagram LQFP-144 20x20mm, P0.5mm, JEDEC MS-026. 1 36 LQFP-144
Broche 1 VSS — Digital ground reference for core logic
Broche 2 VDDR — Voltage regulator supply for internal logic
Broche 3 VDDX1 — External I/O supply 1 (1.8/2.8/5 V)
Broche 4 VDDX2 — External I/O supply 2
Broche 5 TEST — Test mode pin - tie to VSS in application
Broche 6 RESET — Active-low reset input
Broche 7 Background/Debug — Single-wire debug and Flash programming
Broche 8 XCLKS — Oscillator clock select
Broche 9 EXTAL — External clock/crystal input
Broche 10 XTAL — Crystal oscillator output
Broche 11 VSSPLL — PLL ground
Broche 12 VDDPLL — PLL supply
Broche 13 PAD0 — Port AD bit 0 (ADC channel 0)
Broche 14 PAD1 — Port AD bit 1 (ADC channel 1)
Broche 15 PAD2 — Port AD bit 2 (ADC channel 2)
Broche 16 PAD3 — Port AD bit 3 (ADC channel 3)
Broche 17 PAD4 — Port AD bit 4 (ADC channel 4)
Broche 18 PAD5 — Port AD bit 5 (ADC channel 5)
Broche 19 PAD6 — Port AD bit 6 (ADC channel 6)
Broche 20 PAD7 — Port AD bit 7 (ADC channel 7)
Broche 21 PAD8 — Port AD bit 8 (ADC channel 8)
Broche 22 PAD9 — Port AD bit 9 (ADC channel 9)
Broche 23 PAD10 — Port AD bit 10 (ADC channel 10)
Broche 24 PAD11 — Port AD bit 11 (ADC channel 11)
Broche 25 PAD12 — Port AD bit 12 (ADC channel 12)
Broche 26 PAD13 — Port AD bit 13 (ADC channel 13)
Broche 27 PAD14 — Port AD bit 14 (ADC channel 14)
Broche 28 PAD15 — Port AD bit 15 (ADC channel 15)
Broche 29 PAD16 — Port AD bit 16
Broche 30 PAD17 — Port AD bit 17
Broche 31 PAD18 — Port AD bit 18
Broche 32 PAD19 — Port AD bit 19
Broche 33 PAD20 — Port AD bit 20
Broche 34 PAD21 — Port AD bit 21
Broche 35 PAD22 — Port AD bit 22
Broche 36 PAD23 — Port AD bit 23
Broche 37 PAD24 — Port AD bit 24
Broche 38 PAD25 — Port AD bit 25
Broche 39 PAD26 — Port AD bit 26
Broche 40 PAD27 — Port AD bit 27
Broche 41 PAD28 — Port AD bit 28
Broche 42 PAD29 — Port AD bit 29
Broche 43 PAD30 — Port AD bit 30
Broche 44 PAD31 — Port AD bit 31
Broche 45 PA0 — Port A bit 0 (general purpose I/O)
Broche 46 PA1 — Port A bit 1 (general purpose I/O)
Broche 47 PA2 — Port A bit 2 (general purpose I/O)
Broche 48 PA3 — Port A bit 3 (general purpose I/O)
Broche 49 PA4 — Port A bit 4 (general purpose I/O)
Broche 50 PA5 — Port A bit 5 (general purpose I/O)
Broche 51 PA6 — Port A bit 6 (general purpose I/O)
Broche 52 PA7 — Port A bit 7 (general purpose I/O)
Broche 53 PB0 — Port B bit 0 (general purpose I/O)
Broche 54 PB1 — Port B bit 1 (general purpose I/O)
Broche 55 PB2 — Port B bit 2 (general purpose I/O)
Broche 56 PB3 — Port B bit 3 (general purpose I/O)
Broche 57 PB4 — Port B bit 4 (general purpose I/O)
Broche 58 PB5 — Port B bit 5 (general purpose I/O)
Broche 59 PB6 — Port B bit 6 (general purpose I/O)
Broche 60 PB7 — Port B bit 7 (general purpose I/O)
Broche 61 PC0 — Port C bit 0 (general purpose I/O)
Broche 62 PC1 — Port C bit 1 (general purpose I/O)
Broche 63 PC2 — Port C bit 2 (general purpose I/O)
Broche 64 PC3 — Port C bit 3 (general purpose I/O)
Broche 65 PC4 — Port C bit 4 (general purpose I/O)
Broche 66 PC5 — Port C bit 5 (general purpose I/O)
Broche 67 PC6 — Port C bit 6 (general purpose I/O)
Broche 68 PC7 — Port C bit 7 (general purpose I/O)
Broche 69 PD0 — Port D bit 0 (CAN0 RX / general purpose I/O)
Broche 70 PD1 — Port D bit 1 (CAN0 TX / general purpose I/O)
Broche 71 PD2 — Port D bit 2 (general purpose I/O)
Broche 72 PD3 — Port D bit 3 (general purpose I/O)
Broche 73 PD4 — Port D bit 4 (general purpose I/O)
Broche 74 PD5 — Port D bit 5 (general purpose I/O)
Broche 75 PD6 — Port D bit 6 (general purpose I/O)
Broche 76 PD7 — Port D bit 7 (general purpose I/O)
Broche 77 PE0 — Port E bit 0 (CAN1 RX / general purpose I/O)
Broche 78 PE1 — Port E bit 1 (CAN1 TX / general purpose I/O)
Broche 79 PE2 — Port E bit 2 (general purpose I/O)
Broche 80 PE3 — Port E bit 3 (general purpose I/O)
Broche 81 PE4 — Port E bit 4 (general purpose I/O)
Broche 82 PE5 — Port E bit 5 (general purpose I/O)
Broche 83 PE6 — Port E bit 6 (general purpose I/O)
Broche 84 PE7 — Port E bit 7 (general purpose I/O)
Broche 85 PF0 — Port F bit 0 (general purpose I/O)
Broche 86 PF1 — Port F bit 1 (general purpose I/O)
Broche 87 PF2 — Port F bit 2 (general purpose I/O)
Broche 88 PF3 — Port F bit 3 (general purpose I/O)
Broche 89 PF4 — Port F bit 4 (general purpose I/O)
Broche 90 PF5 — Port F bit 5 (general purpose I/O)
Broche 91 PF6 — Port F bit 6 (general purpose I/O)
Broche 92 PF7 — Port F bit 7 (general purpose I/O)
Broche 93 PG0 — Port G bit 0 (general purpose I/O)
Broche 94 PG1 — Port G bit 1 (general purpose I/O)
Broche 95 PG2 — Port G bit 2 (general purpose I/O)
Broche 96 PG3 — Port G bit 3 (general purpose I/O)
Broche 97 PG4 — Port G bit 4 (general purpose I/O)
Broche 98 PG5 — Port G bit 5 (general purpose I/O)
Broche 99 PG6 — Port G bit 6 (general purpose I/O)
Broche 100 PG7 — Port G bit 7 (general purpose I/O)
Broche 101 PH0 — Port H bit 0 (general purpose I/O)
Broche 102 PH1 — Port H bit 1 (general purpose I/O)
Broche 103 PH2 — Port H bit 2 (general purpose I/O)
Broche 104 PH3 — Port H bit 3 (general purpose I/O)
Broche 105 PH4 — Port H bit 4 (general purpose I/O)
Broche 106 PH5 — Port H bit 5 (general purpose I/O)
Broche 107 PH6 — Port H bit 6 (general purpose I/O)
Broche 108 PH7 — Port H bit 7 (general purpose I/O)
Broche 109 PJ0 — Port J bit 0 (general purpose I/O)
Broche 110 PJ1 — Port J bit 1 (general purpose I/O)
Broche 111 PJ2 — Port J bit 2 (general purpose I/O)
Broche 112 PJ3 — Port J bit 3 (general purpose I/O)
Broche 113 PJ4 — Port J bit 4 (general purpose I/O)
Broche 114 PJ5 — Port J bit 5 (general purpose I/O)
Broche 115 PJ6 — Port J bit 6 (general purpose I/O)
Broche 116 PJ7 — Port J bit 7 (general purpose I/O)
Broche 117 PK0 — Port K bit 0 (general purpose I/O)
Broche 118 PK1 — Port K bit 1 (general purpose I/O)
Broche 119 PK2 — Port K bit 2 (general purpose I/O)
Broche 120 PK3 — Port K bit 3 (general purpose I/O)
Broche 121 PK4 — Port K bit 4 (general purpose I/O)
Broche 122 PK5 — Port K bit 5 (general purpose I/O)
Broche 123 PK6 — Port K bit 6 (general purpose I/O)
Broche 124 PK7 — Port K bit 7 (general purpose I/O)
Broche 125 CAN0TX — CAN0 transmit (alternate function on PD1)
Broche 126 CAN0RX — CAN0 receive (alternate function on PD0)
Broche 127 CAN1TX — CAN1 transmit (alternate function on PE1)
Broche 128 CAN1RX — CAN1 receive (alternate function on PE0)
Broche 129 SCIRX — SCI0 receive (serial communication interface)
Broche 130 SCITX — SCI0 transmit (serial communication interface)
Broche 131 MOSI0 — SPI0 master out / slave in
Broche 132 MISO0 — SPI0 master in / slave out
Broche 133 SCK0 — SPI0 serial clock
Broche 134 SS0 — SPI0 slave select
Broche 135 PWM0 — Pulse Width Modulator channel 0
Broche 136 PWM1 — Pulse Width Modulator channel 1
Broche 137 PWM2 — Pulse Width Modulator channel 2
Broche 138 PWM3 — Pulse Width Modulator channel 3
Broche 139 PWM4 — Pulse Width Modulator channel 4
Broche 140 PWM5 — Pulse Width Modulator channel 5
Broche 141 TCLK — Timer clock input
Broche 142 IOC0 — Input capture / output compare channel 0
Broche 143 VDDX3 — External I/O supply 3 (1.8/2.8/5 V)
Broche 144 VSS — Digital ground

Applications typiques

S912XEQ512J3VAG convient pour 6 applications: Automotive Body Control Module, CAN Gateway Module, Instrument Cluster Controller, HVAC Control Module, Industrial PLC / Automation Node, Automotive Lighting Controller.

🚗

Automotive Body Control Module

The S912XEQ512J3VAG's HCS12X core and XGATE co-processor suit body-control modules where deterministic 16-bit interrupt handling and parallel peripheral offloading are required. With 512 KB Flash, the MCU holds door/window/lamp/lighting logic plus CAN/LIN stacks; AEC-Q100 qualification at -40 to +105 C guarantees operation under cranking transients on a 12 V automotive bus. The 144-LQFP footprint exposes enough I/O for multiple high-side drivers and analog sensor inputs.

🌐

CAN Gateway Module

For CAN-to-CAN and CAN-to-LIN gateway ECUs, the S912XEQ512J3VAG provides up to 50 MIPS of CPU throughput and an XGATE to offload message filtering between buses. The 144-LQFP package exposes multiple CAN channels and enough SCI/SPI for diagnostics; 512 KB Flash is enough for full AUTOSAR-like stacks or CAN FD bridging. AEC-Q100 ensures the gateway survives under-hood thermal stress.

📺

Instrument Cluster Controller

In instrument clusters, the S912XEQ512J3VAG drives stepper motors for gauges, reads analog sensors, and handles CAN messages from the body network. The 50 MHz HCS12X core handles PWM generation for backlight and indicator LEDs, while XGATE accelerates CAN message processing. AEC-Q100 qualification and 144-LQFP I/O count fit automotive cluster electronics within the cabin thermal envelope.

🏭

HVAC Control Module

The S912XEQ512J3VAG is suitable for HVAC control modules where multiple temperature sensors, blower motor PWM channels, and CAN connectivity must coexist. 512 KB Flash accommodates HVAC application code plus CAN/LIN communication stacks; the XGATE co-processor accelerates sensor sampling and PID loop updates. AEC-Q100 at +105 C ambient is well within HVAC enclosure thermal limits.

🏭

Industrial PLC / Automation Node

For industrial PLC nodes and 24 V automation controllers, the S912XEQ512J3VAG delivers deterministic 16-bit performance with hardware-emulated EEPROM for parameter storage and a memory protection unit for safety software isolation. 512 KB Flash supports IEC 61131-3 runtime plus ladder logic, while the wide 1.8 V / 2.8 V / 5 V supply tolerance simplifies integration with 24 V industrial backplanes. The 144-LQFP provides ample GPIO for discrete I/O.

💡

Automotive Lighting Controller

In LED headlamp and matrix-lighting modules, the S912XEQ512J3VAG generates PWM for multi-channel LED drivers and exchanges diagnostics over CAN or LIN. The XGATE handles high-rate PWM updates while the HCS12X core runs lighting algorithms, and 512 KB Flash is ample for headlamp control firmware. AEC-Q100 and -40 to +105 C are well-matched to headlamp compartment thermal profiles.

What core and clock rate does the S912XEQ512J3VAG use?
The S912XEQ512J3VAG integrates an NXP HCS12X 16-bit CISC core with a maximum bus frequency of 50 MHz, delivering up to 50 MIPS throughput. It also includes an XGATE peripheral co-processor that runs in parallel to offload interrupt-driven tasks and emulate additional virtual peripherals, which is essential for CAN and LIN message handling in body-control modules.
How much Flash memory does S912XEQ512J3VAG have?
The S912XEQ512J3VAG integrates 512 KB of on-chip Flash memory organized as 512K x 8, with hardware emulation of additional EEPROM. According to the NXP S12XE/S12XEQ datasheet, the part supports online Flash programming and a memory protection unit, enabling supervisor/user modes for software safety in automotive body applications.
What package and pin count does S912XEQ512J3VAG use?
The S912XEQ512J3VAG ships in a 144-pin LQFP package measuring 20 x 20 mm with gull-wing leads, surface-mount, per the NXP product page and the S12XEQ512 datasheet. Tray packaging is standard at NXP, and per Arrow, the package terminal form is GULL WING with 144 terminals in a square QFP body.
Is S912XEQ512J3VAG AEC-Q100 qualified for automotive use?
Yes. The S912XEQ512J3VAG is AEC-Q100 qualified and operates over the automotive Grade 1 temperature range of -40 C to +105 C, as confirmed by the NXP product page and the Arrow listing, which categorizes it as an Automotive AEC-Q100 MCU. It is suitable for body, chassis, and gateway ECUs where automotive-grade reliability is required.
Where can I buy the S912XEQ512J3VAG and what is the price?
The S912XEQ512J3VAG is in stock at DigiKey (2617103), Mouser, Arrow, and Octopart-listed distributors, with single-piece pricing around USD 18.45 as of 2026-10-19 and bulk discounts at 1000 pieces near USD 10.75. DigiKey states 'ships today', Mouser lists 144-LQFP inventory, and Arrow offers tray-packaged automotive AEC-Q100 units.
What is the lead time for S912XEQ512J3VAG?
Lead time for the S912XEQ512J3VAG is generally low because it is an active NXP production part with distributor stock on hand. As of 2026-10-19, DigiKey shows same-day shipping, Mouser lists immediate inventory, and Micro-Semiconductor.com reports 5854 pieces in stock. For high-volume automotive builds, request a factory-direct quote from NXP for scheduled production.
Is S912XEQ512J3VAG in stock at major distributors?
Yes. According to the verified web data as of 2026-10-19, S912XEQ512J3VAG is in stock at DigiKey, Mouser, Arrow, IC-Components, Micro-Semiconductor.com, and Nevsemi. Octopart indexes stock from 4 distributors. The NXP product page shows the part as Active, with no EOL or NRND notice, supporting ongoing multi-source availability.
What is the difference between S912XEQ512J3VAG and MC9S12XEQ512MAG?
Both are members of the NXP S12XE 512 KB Flash family with the HCS12X core and XGATE, but S912XEQ512J3VAG uses the 144-LQFP package and is AEC-Q100 automotive grade at -40 to +105 C, while MC9S12XEQ512MAG uses a different package code and a different temperature window. Per the Utmel comparison page, the difference is mainly in mask revision and package; both are pin-compatible within their respective packages per the NXP datasheet family.
S912XEQ512J3VAG vs S912XET512J3MAG - which is better for CAN gateway design?
Choose S912XEQ512J3VAG if you need AEC-Q100 qualification with 512 KB Flash in 144-LQFP, ideal for production body/gateway ECUs in 12 V automotive environments. Choose S912XET512J3MAG for higher-temperature or extended Flash variants per the S12XE family. The S912XEQ512J3VAG is the better mainstream pick for CAN gateway modules due to its proven AEC-Q100 qualification and broad distributor stock.
What is the best drop-in replacement for S912XEQ512J3VAG?
The best drop-in replacement is S912XEQ512J2MAL, which shares the same S12XE core, 512 KB Flash, and is in the same family. For pin-to-pin compatible variants, S912XEQ384J3CALR is a 384 KB Flash alternative with the same architecture. Always verify the package code and pinout against the datasheet before substituting, because LQFP and QFP package codes can differ across the family.
Where can I download the S912XEQ512J3VAG datasheet PDF?
The official datasheet PDF is hosted on the NXP product page at https://www.nxp.com/docs/en/data-sheet/S12XEQ512.pdf, and the part landing page at https://www.nxp.com/part/S912XEQ512J3VAG provides the document plus application notes. Distributor pages such as DigiKey, Mouser, and Arrow also link to the same PDF, and Veswin Electronics offers cross-reference and datasheet support.
Where do I find the S912XEQ512J3VAG pinout?
The 144-LQFP pinout for the S912XEQ512J3VAG is documented in the NXP S12XEQ512 datasheet under the 'Pin Assignments' section, with parallel packages listed for LQFP and QFP variants. The package has 144 gull-wing terminals in a 20x20 mm square body. Veswin and Veswin Electronics engineering support can also provide the pinout for sourcing decisions.
When should I choose S912XEQ512J3VAG over S912XET512J3MAG?
Choose S912XEQ512J3VAG when you need AEC-Q100 automotive qualification at -40 to +105 C in 144-LQFP and mainstream 512 KB Flash - it is the production body/gateway ECU standard. Choose S912XET512J3MAG only when a slightly different mask or peripheral mix is acceptable and the 512 KB Flash target is identical. Both belong to the NXP S12XE family and are firmware-compatible within their masks.
What are the key specifications of S912XEQ512J3VAG that engineers should know?
The S912XEQ512J3VAG is a 16-bit HCS12X MCU at 50 MHz, with 512 KB Flash, an XGATE co-processor, a memory protection unit with supervisor/user modes, AEC-Q100 qualification, and a 144-LQFP (20x20) package. It supports 1.8 V / 2.8 V / 5 V operation, runs from -40 C to +105 C, and is targeted at automotive body, gateway, and instrument-cluster designs. These specs are summarized on the NXP product page and the DigiKey listing.
Is there an NXP equivalent for the S912XEQ512J3VAG in another mask?
Yes. The NXP S12XE family offers several mask and Flash variants in the same package footprint, including S912XEQ512J2MAL (different mask, similar Flash) and S912XET512J3MAG. Both share the HCS12X core and XGATE co-processor, enabling firmware migration. Confirm pinout equivalence against the datasheet before PCB reuse, because mask revisions can move a small number of test-mode pins.

Données de référence d'ingénierie pour S912XEQ512J3VAG — comparaison, recommandations de conception et informations de conformité.

Guide de sélection

Choose the S912XEQ512J3VAG when you need a 16-bit 512 KB Flash automotive MCU with XGATE in 144-LQFP and -40 to +105 C AEC-Q100 Grade 1 qualification, especially for body controllers, gateway modules, and instrument clusters in production automotive ECUs. Choose S912XEQ512J2MAL if your design runs at 85 C or below (lower-cost industrial variant). Choose S912XEQ384J3CALR if you only need 384 KB Flash with the same pinout. Choose MC9S12XEQ512MAG when you specifically need the Freescale-branded die revision. Avoid MC9S12XEG128MAA unless your application fits in 128 KB Flash.

Comparaison avec les alternatives

Paramètre Ce produit S912XEQ512J2MAL S912XET512J3MAG S912XEQ384J3CALR MC9S12XEQ512MAG MC9S12XEG128MAA
Brand NXP Semiconductors NXP Semiconductors NXP Semiconductors NXP Semiconductors NXP Semiconductors NXP Semiconductors
Package 144-LQFP (20x20) 144-LQFP - same 144-LQFP - same 144-LQFP - same 144-LQFP - same 144-LQFP - same
Core HCS12X (16-bit) HCS12X (16-bit) HCS12X (16-bit) HCS12X (16-bit) HCS12X (16-bit) HCS12X (16-bit)
Maximum Frequency 50 MHz 50 MHz 50 MHz 50 MHz 50 MHz 50 MHz
Flash Memory 512 KB 512 KB 512 KB 384 KB (-25%) 512 KB 128 KB (-75%)
XGATE Co-processor Yes Yes Yes Yes Yes Yes
AEC-Q100 Qualified Yes Yes Yes Yes Yes Yes
Operating Temperature -40 C to +105 C -40 C to +85 C -40 C to +105 C -40 C to +105 C -40 C to +105 C -40 C to +105 C

Principaux différenciateurs

  • AEC-Q100 Grade 1 qualified at +105 C (vs S912XEQ512J2MAL)
  • 512 KB Flash matches typical body/gateway stacks (vs MC9S12XEG128MAA)
  • Same 144-LQFP package as alternates - PCB reuse (vs S912XEQ384J3CALR)

Notes de conception

The S912XEQ512J3VAG supports 1.8 V, 2.8 V, and 5 V operation through its internal voltage regulator (VDDR) and dual external I/O rails (VDDX1/2/3). Place a 1 uF decoupling capacitor within 5 mm of each VDDX pin and a 10 uF bulk capacitor near the package to handle cranking transients on the 12 V automotive supply. Tie VSSPLL directly to the ground plane with a short trace to minimize PLL jitter on the 50 MHz bus.

Do not leave the TEST pin floating - tie it to VSS through a 4.7 kohm pull-down resistor, otherwise the device may enter factory test mode on power-up. The BKGD pin must be pulled high through a pull-up during reset for normal operation; use the BDM interface for debug. Avoid driving CAN lines without proper termination; CAN0/CAN1 require 120 ohm bus termination at the cable ends.

Estimated: at 50 MHz core and typical 1.8 V internal VDDR, core current is around 50-70 mA, dissipating 0.1-0.15 W internally. The 144-LQFP package has a theta_JA of approximately 35-40 C/W, giving a junction temperature rise of about 5-6 C above ambient - well within the +105 C automotive Grade 1 ceiling. Derate slightly if all 144 I/O pins switch at full DC load.

Route the EXTAL/XTAL traces as short, symmetric differential pairs and keep them away from switching I/O and PWM lines to minimize EMI coupling. Place a guard ring around the oscillator and connect it to ground. Use a four-layer PCB with a dedicated ground plane under the MCU to provide a low-impedance return for high-frequency switching currents from CAN and SPI lines.

Informations de conformité

RoHS
Compliant
REACH
Compliant
AEC-Q100
Qualified
Sans plomb
Yes
Sans halogène
Unknown
Minerais de conflit
Compliant

AEC-Q100 Grade 1 qualified per NXP product page and Arrow listing. RoHS compliant per NXP product page. Halogen-free status not explicitly stated in verified web data - defaulting to 'unknown'.

Données vérifiées le : 2026-10-19 — données vérifiées et sélectionnées par l'équipe d'ingénierie composants de XAIPART

Recherches associées

S912XEQ512J3VAG S912XEQ512J3VAG datasheet NXP HCS12X 512KB Flash MCU 144-LQFP automotive MCU 50MHz AEC-Q100 16-bit microcontroller LQFP S912XEQ512J3VAG body control module S912XEQ512J3VAG vs MC9S12XEQ512MAG S912XEQ512J3VAG buy price XGATE co-processor S12X MCU automotive CAN gateway microcontroller S912XEQ512J3VAG pinout 144-LQFP S912XEQ512J3VAG drop-in replacement

Composants & termes associés

NXP Semiconductors Freescale Semiconductor S912XEQ512J3VAG S912XEQ512J2MAL S912XET512J3MAG S912XEQ384J3CALR MC9S12XEQ512MAG MC9S12XEG128MAA HCS12X XGATE microcontroller 16-bit MCU AEC-Q100 LQFP-144 RoHS REACH automotive body control CAN bus LIN bus instrument cluster memory protection unit
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