MC9S12A256MPVE - 16-bit HCS12 MCU, 256KB Flash, 25MHz | NXP
MPN: MC9S12A256MPVE ✗ Akhir HidupMC9S12A256MPVE Ringkasan
A microcontroller (MCU) is an integrated circuit containing a processor, memory (Flash for program storage and RAM for working storage), and programmable I/O peripherals on a single die. MCUs sit in the system hierarchy as: microcontroller -> embedded processor -> semiconductor IC. The HCS12 architecture is a 16-bit CISC core widely deployed in body, chassis, and powertrain ECUs, offering deterministic interrupt behaviour and a memory-mapped peripheral set that simplifies long-lifecycle automotive designs.
Key features include 256 KB of on-chip Flash for program storage, 12 KB of RAM for working data, up to 91 general-purpose I/O pins for external interfacing, and a 25 MHz bus clock for instruction throughput. Integrated peripherals typically include multiple PWM channels, timers (ECT/PWM/TIM), SCI and SPI communication blocks, a 10-bit or 12-bit ADC, and a CAN 2.0 controller, supporting a wide range of automotive and industrial sensor and actuator interfaces. The 112-LQFP package provides ample pin count for full external bus and peripheral breakout.
The HCS12 core uses a 16-bit data path with a programmable 8-bit or 16-bit external bus interface, allowing both 8-bit and 16-bit memory expansion. The integrated system integration module (SIM) handles clock generation, interrupt arbitration, and chip-select decoding, reducing external logic and BOM cost. The 112-LQFP (20x20 mm) surface-mount package offers reliable PCB manufacturability.
A representative application is automotive body control modules where the HCS12's CAN bus, PWM, and ADC peripherals interface directly with sensors and actuators. Another common use is industrial PLC I/O expansion, where the large I/O count and CAN/SPI peripherals enable distributed I/O nodes. Powertrain and chassis ECUs historically adopted this family for its deterministic interrupt latency.
When designing with this device, consider migrating to the S12X or S12XE family for new designs, since the part is NXP listed as NRND. Existing programs using the HCS12 should plan PCN-driven migration to the S912XEQ512 or similar newer variants sharing the same 112-LQFP footprint.
Alternatif penggantian untuk MC9S12A256MPVE — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian MC9S12A256MPVE (sama faktor bentuk dan footprint) — berbeda di dalam Operating Temperature, Package, Core Processor, Supply Voltage, Core Architecture.
MC9S12A512CPVE
✅ Drop-InKontak untuk harga
Lihat Datasheet →MC9S12A256CFUE
✅ Drop-InKontak untuk harga
Lihat Datasheet →MC9S12E256CFUE
✅ Drop-InKontak untuk harga
Lihat Datasheet →MC9S12E256VPVE
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
MC9S12DT128MPVE
✅ Drop-InKontak untuk harga
Lihat Datasheet →MC9S12DG128MPV
✅ Drop-InKontak untuk harga
Lihat Datasheet →MC9S12A64CPVE
✅ Drop-InKontak untuk harga
Lihat Datasheet →S912XET512J2VAGR
✅ Drop-InKontak untuk harga
Lihat Datasheet →MC9S12A256MPVE Rating Maksimal & Karakteristik Listrik
| Product Type | Microcontroller (MCU) |
| Core | HCS12 (16-bit) |
| Family | BARRACUDA4 / S12A |
| Frekuensi Bawah Maximum | 25 MHz |
| Program Memory (Flash) | 256 KB (256K x 8) |
| RAM Size | 12 KB (12K x 8) |
| Number of I/O Pins | 91 |
| Paket | 112-LQFP (20x20 mm) |
| Tipe Mounting | Surface Mount |
| Rentang Suhu Kerja | -40 C to +125 C (TA) |
| External Bus Width | 8/16-bit (programmable narrow mode) |
| Peripherals | PWM, ECT, ADC, SCI, SPI, CAN 2.0 |
Konfigurasi Pin MC9S12A256MPVE
| Pin produk 1 | PAD — Voltage reference / ETPU channel |
| Pin produk 2 | PAD — General-purpose I/O |
| Pin produk 3 | PAD — General-purpose I/O |
| Pin produk 4 | VDDR — Voltage regulator output (internal 2.5V) |
| Pin produk 5 | VDD — Digital supply voltage |
| Pin produk 6 | VSS — Digital ground |
| Pin produk 7 | VDDX — I/O supply voltage |
| Pin produk 8 | VSSX — I/O ground |
| Pin produk 9 | RESET — Active-low external reset input |
| Pin produk 10 | XCLKS — Crystal oscillator select / mode |
| Pin produk 11 | EXTAL — External clock / crystal input |
| Pin produk 12 | XTAL — Crystal output |
| Pin produk 13 | TEST — Test mode pin (must be tied high or left open per datasheet) |
| Pin produk 14 | BKGD — Background Debug Mode pin |
| Pin produk 15 | PAD — General-purpose I/O |
| Pin produk 16 | PAD — General-purpose I/O |
| Pin produk 17 | PAD — General-purpose I/O |
| Pin produk 18 | PAD — General-purpose I/O |
| Pin produk 19 | PAD — General-purpose I/O |
| Pin produk 20 | PAD — General-purpose I/O |
| Pin produk 21 | PAD — General-purpose I/O |
| Pin produk 22 | PAD — General-purpose I/O |
| Pin produk 23 | PAD — General-purpose I/O |
| Pin produk 24 | PAD — General-purpose I/O |
| Pin produk 25 | PAD — General-purpose I/O |
| Pin produk 26 | PAD — General-purpose I/O |
| Pin produk 27 | PAD — General-purpose I/O |
| Pin produk 28 | PAD — General-purpose I/O |
| Pin produk 29 | PAD — General-purpose I/O |
| Pin produk 30 | PAD — General-purpose I/O |
| Pin produk 31 | PAD — General-purpose I/O |
| Pin produk 32 | PAD — General-purpose I/O |
| Pin produk 33 | PAD — General-purpose I/O |
| Pin produk 34 | PAD — General-purpose I/O |
| Pin produk 35 | PAD — General-purpose I/O |
| Pin produk 36 | PAD — General-purpose I/O |
| Pin produk 37 | PAD — General-purpose I/O |
| Pin produk 38 | PAD — General-purpose I/O |
| Pin produk 39 | PAD — General-purpose I/O |
| Pin produk 40 | PAD — General-purpose I/O |
| Pin produk 41 | PAD — General-purpose I/O |
| Pin produk 42 | PAD — General-purpose I/O |
| Pin produk 43 | PAD — General-purpose I/O |
| Pin produk 44 | PAD — General-purpose I/O |
| Pin produk 45 | PAD — General-purpose I/O |
| Pin produk 46 | PAD — General-purpose I/O |
| Pin produk 47 | PAD — General-purpose I/O |
| Pin produk 48 | PAD — General-purpose I/O |
| Pin produk 49 | PAD — General-purpose I/O |
| Pin produk 50 | PAD — General-purpose I/O |
| Pin produk 51 | PAD — General-purpose I/O |
| Pin produk 52 | PAD — General-purpose I/O |
| Pin produk 53 | PAD — General-purpose I/O |
| Pin produk 54 | PAD — General-purpose I/O |
| Pin produk 55 | PAD — General-purpose I/O |
| Pin produk 56 | PAD — General-purpose I/O |
| Pin produk 57 | PAD — General-purpose I/O |
| Pin produk 58 | PAD — General-purpose I/O |
| Pin produk 59 | PAD — General-purpose I/O |
| Pin produk 60 | PAD — General-purpose I/O |
| Pin produk 61 | PAD — General-purpose I/O |
| Pin produk 62 | PAD — General-purpose I/O |
| Pin produk 63 | PAD — General-purpose I/O |
| Pin produk 64 | PAD — General-purpose I/O |
| Pin produk 65 | PAD — General-purpose I/O |
| Pin produk 66 | PAD — General-purpose I/O |
| Pin produk 67 | PAD — General-purpose I/O |
| Pin produk 68 | PAD — General-purpose I/O |
| Pin produk 69 | PAD — General-purpose I/O |
| Pin produk 70 | PAD — General-purpose I/O |
| Pin produk 71 | PAD — General-purpose I/O |
| Pin produk 72 | PAD — General-purpose I/O |
| Pin produk 73 | PAD — General-purpose I/O |
| Pin produk 74 | PAD — General-purpose I/O |
| Pin produk 75 | PAD — General-purpose I/O |
| Pin produk 76 | PAD — General-purpose I/O |
| Pin produk 77 | PAD — General-purpose I/O |
| Pin produk 78 | PAD — General-purpose I/O |
| Pin produk 79 | PAD — General-purpose I/O |
| Pin produk 80 | PAD — General-purpose I/O |
| Pin produk 81 | PAD — General-purpose I/O |
| Pin produk 82 | PAD — General-purpose I/O |
| Pin produk 83 | PAD — General-purpose I/O |
| Pin produk 84 | PAD — General-purpose I/O |
| Pin produk 85 | PAD — General-purpose I/O |
| Pin produk 86 | PAD — General-purpose I/O |
| Pin produk 87 | PAD — General-purpose I/O |
| Pin produk 88 | PAD — General-purpose I/O |
| Pin produk 89 | PAD — General-purpose I/O |
| Pin produk 90 | PAD — General-purpose I/O |
| Pin produk 91 | PAD — General-purpose I/O |
| Pin produk 92 | PAD — General-purpose I/O |
| Pin produk 93 | PAD — General-purpose I/O |
| Pin produk 94 | PAD — General-purpose I/O |
| Pin produk 95 | PAD — General-purpose I/O |
| Pin produk 96 | PAD — General-purpose I/O |
| Pin produk 97 | PAD — General-purpose I/O |
| Pin produk 98 | PAD — General-purpose I/O |
| Pin produk 99 | PAD — General-purpose I/O |
| Pin produk 100 | PAD — General-purpose I/O |
| Pin produk 101 | PAD — General-purpose I/O |
| Pin produk 102 | PAD — General-purpose I/O |
| Pin produk 103 | VDDA — ADC supply voltage |
| Pin produk 104 | VSSA — ADC ground |
| Pin produk 105 | VRH — ADC high reference voltage |
| Pin produk 106 | VRL — ADC low reference voltage |
| Pin produk 107 | PAD — General-purpose I/O |
| Pin produk 108 | PAD — General-purpose I/O |
| Pin produk 109 | PAD — General-purpose I/O |
| Pin produk 110 | PAD — General-purpose I/O |
| Pin produk 111 | PAD — General-purpose I/O |
| Pin produk 112 | PAD — General-purpose I/O |
Aplikasi Umum
MC9S12A256MPVE cocok untuk 7 aplikasis: Automotive Body Control Module, Industrial PLC I/O Expansion Module, Powertrain Sensor Interface ECU, Chassis Control ECU (ABS/ESC precursor platforms), Industrial Motor Drive Front-End Controller, Automotive Instrument Cluster Controller, HVAC Climate Control Module.
Automotive Body Control Module
The MC9S12A256MPVE's 25 MHz HCS12 core, 91 I/O pins, and integrated CAN 2.0, PWM, ADC, SCI, and SPI peripherals make it a strong fit for body control modules (BCMs) that drive lighting, door locks, mirrors, and wiper motors. With 256 KB Flash it accommodates BCM firmware including diagnostic lighting stacks (UDS/KWP2000), and the 12 KB RAM is sufficient for CAN message buffering and ECU state machines. The -40 C to +125 C operating range covers under-hood temperature swings. Pin count is critical here: the BCM must interface with multiple LIN/CAN transceivers, switch inputs, PWM-driven loads, and analog sensors simultaneously, and the 112-LQFP's 91 I/O lines provide that connectivity without external muxing.
Direkomendasikan
Industrial PLC I/O Expansion Module
For distributed PLC I/O nodes, the MC9S12A256MPVE delivers the deterministic interrupt latency and rich PWM/timer set that industrial expansion requires. Its 25 MHz HCS12 core, 91 I/O lines, and CAN 2.0 + SCI peripherals support fieldbus backhaul (CANopen / DeviceNet) and analog/digital I/O channels. The 256 KB Flash stores protocol stacks plus application logic, while 12 KB RAM handles cyclic scan buffers. The 112-LQFP provides the pin density needed to expose ADC inputs (typically 16+ analog channels), digital I/O banks, and dedicated peripheral pins without external I/O expanders, and the Part supports the wide -40 C to +125 C temperature range demanded by industrial cabinets.
Direkomendasikan
Powertrain Sensor Interface ECU
The MC9S12A256MPVE's ADC and PWM peripherals paired with 256 KB Flash suit engine and transmission sensor interface ECUs where analog sensor signal conditioning and actuator PWM drive are co-located. Its 25 MHz HCS12 core handles sensor linearization math and CAN message assembly, while 91 I/O pins accommodate multi-channel pressure/temperature/position sensor inputs and solenoid drive outputs. The Part's -40 C to +125 C operating range meets powertrain thermal requirements, and its deterministic 16-bit instruction cycle supports tight control-loop timing critical for emission and fuel-efficiency strategies. The 112-LQFP provides the pin breakout needed for mixed analog/digital sensor wiring at the ECU harness.
Direkomendasikan
Chassis Control ECU (ABS/ESC precursor platforms)
The MC9S12A256MPVE was widely deployed in chassis control platforms where deterministic interrupt handling, wheel-speed sensor inputs, and CAN networking converge. Its ECT (Enhanced Capture Timer) and PWM peripherals handle wheel-speed pulse timing and solenoid valve drive, while 256 KB Flash accommodates vehicle dynamics firmware. The 25 MHz HCS12 provides sufficient throughput for chassis control sample rates, and 12 KB RAM supports wheel-state snapshot buffers. The 112-LQFP exposes 91 I/O lines for sensor wiring harnesses; the Part's -40 C to +125 C rating supports chassis-mounted ECU environments where temperature swing is wide and vibration is present.
Direkomendasikan
Industrial Motor Drive Front-End Controller
For low-power industrial motor drives (pumps, fans, conveyors), the MC9S12A256MPVE provides PWM generation, ADC feedback sampling, and CAN/SCI host communication in one device. Its HCS12 core runs field-oriented control (FOC) loops for small BLDC and stepper motors at acceptable bandwidths, while 256 KB Flash stores application firmware plus fault-handling routines. The 91 I/O pins handle three-phase PWM, current-sense ADC inputs, encoder feedback, and host comms simultaneously, and the -40 C to +125 C temperature range supports motor cabinet thermal environments. The 112-LQFP simplifies PCB layout by providing single-chip integration that replaces external DSP+FPGA combinations for low-end drives.
Direkomendasikan
Automotive Instrument Cluster Controller
The MC9S12A256MPVE can drive instrument cluster functions including gauge stepper control, LCD segment driving, CAN message parsing, and switch input handling. Its 256 KB Flash stores gauge calibration and CAN database (dbcoded) message handlers, and its 12 KB RAM buffers incoming CAN frames for cluster animation timing. The 25 MHz core is fast enough for cluster animation routines, while 91 I/O pins accommodate multiple stepper motor outputs, switch matrix inputs, and telltale LED drivers. The Part's automotive -40 C to +125 C temperature rating supports dashboard-mounted cluster environments, and the 112-LQFP footprint provides ample pin count without requiring external I/O expanders.
Direkomendasikan
HVAC Climate Control Module
The MC9S12A256MPVE integrates HVAC control functions: temperature sensor ADC sampling, blower motor PWM control, mode-door actuator drive, and CAN/LIN body-network communication. Its 256 KB Flash accommodates HVAC firmware plus diagnostics; 12 KB RAM supports the small state machines needed for climate algorithms. The Part's 91 I/O pins handle NTC thermistor inputs, multiple blower speeds via PWM, mode-stepper drives, and rear-window defrost relay control. Its -40 C to +125 C automotive temperature rating covers cabin and under-hood HVAC module mounting, and the HCS12 core's deterministic interrupt handling ensures consistent blower response time to driver inputs and CAN commands.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk MC9S12A256MPVE — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | MC9S12A512CPVE | MC9S12A256CFUE | MC9S12E256CFUE | MC9S12E256VPVE | MC9S12DT128MPVE | S912XET512J2VAGR |
|---|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 112-LQFP (20x20) | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same | 112-LQFP - same family | 112-LQFP - same family | 112-LQFP (20x20) - same | 112-LQFP - same family |
| Core | HCS12 (16-bit) | HCS12 (16-bit) | HCS12 (16-bit) | HCS12 (16-bit) | HCS12 (16-bit) | HCS12 (16-bit) | S12X (16-bit + XGATE) |
| Maximum Clock | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 50 MHz |
| Flash | 256 KB | 512 KB | 256 KB | 256 KB | 256 KB | 128 KB | 512 KB |
| RAM | 12 KB | 12 KB | 12 KB | 12 KB | 12 KB | 8 KB | 32 KB |
| I/O Pins | 91 | 91 | 91 | 91 | 91 | 91 | 91 |
| Operating Temperature | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C |
| Lifecycle Status | NRND | Active | Active | Active | NRND | NRND | Active |
Diferensiator Kunci
- Largest memory in same-package 112-LQFP S12A family (vsMC9S12DT128MPVE)
- Direct die/package equivalent with active lifecycle (vsMC9S12A256CFUE)
- Drop-in 512KB Flash upgrade with active lifecycle (vsMC9S12A512CPVE)
- Same-package migration to enhanced S12X architecture (vsS912XET512J2VAGR)
Catatan Desain
NXP marks the MC9S12A256MPVE as NRND (Not Recommended for New Designs) per the official NXP product page. For new programs, plan migration to S912XET512 or S912XEQ384 families which share the 112-LQFP footprint and add an XGATE co-processor. Existing programs should request a last-time-buy quote from NXP or authorized distributors to secure inventory before discontinuation. Document the migration path in your PCN response file.
Place decoupling capacitors (100 nF ceramic) on every VDD/VSSX pin pair within 5 mm of the device body, and bulk decoupling 4.7 uF to 10 uF tantalum or ceramic at the regulator output. The 112-LQFP package has multiple VDD/VSSX power/ground pin pairs distributed around the package perimeter; missing any pair causes logic errors and ADC reference drift. Connect the analog VDDA/VSSA pair to a quiet ground and consider a ferrite bead separating digital and analog grounds.
Route the external bus (if enabled) with 50 ohm controlled-impedance traces and add 22-33 ohm series damping resistors at the MCU outputs when driving off-board signals. The 8/16-bit multiplexed external bus of the HCS12 is sensitive to trace length mismatch; keep address/data traces matched within 1 cm to avoid setup/hold violations at 25 MHz. Keep the EXTAL/XTAL crystal traces short and guard them with a ground pour to minimize jitter.
Do not leave the TEST pin floating; tie it to VDDX through a 4.7 kohm pull-up resistor per NXP reference design, otherwise the device may enter test mode. The BKGD (Background Debug Mode) pin must be accessible for ISP programming and BDM debuggers; do not put it on a net that is hidden under the package. Ensure the RESET pin has a 10 kohm pull-up and 100 nF decoupling cap to provide a clean power-on reset.
Estimated: at 25 MHz full-clock operation, typical HCS12 core power dissipation is roughly 150-200 mW at 5V VDD; at 125 C ambient the 112-LQFP package (theta_JA approx 45 C/W for a 4-layer JEDEC test board) limits reliable operation. For under-hood deployment above 105 C ambient, derate clock speed or attach a copper pour heatsink on the package top. Verify with the actual NXP S12A thermal application note for your PCB stackup.
Informasi Konformitas
Compliance fields marked unknown because the NXP product page and verified distributor snippets did not explicitly state RoHS/REACH/AEC-Q100 status. For automotive programs, request the full material declaration from NXP via the official product page before qualification.
