MC9S12A128BCPV - 16-Bit 25MHz HCS12 MCU 128KB Flash | NXP
Артикул: MC9S12A128BCPV ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $18.5 | $18,50 |
| 10 | $16.2 | $162,00 |
| 100 | $13.85 | $1.385,00 |
| 500 | $11.4 | $5.700,00 |
| 1.000 | $9.95 | $9.950,00 |
MC9S12A128BCPV Обзор
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, volatile and non-volatile memory, and configurable peripherals around an instruction-driven I/O architecture. The HCS12 specifically is a 16-bit CISC microcontrollers family sitting in the broader hierarchy: HCS12 microcontroller -> 16-bit MCU -> Freescale/NXP S12 automotive MCU family -> embedded microcontroller -> semiconductor. The HCS12 architecture succeeded the HC11 and is widely deployed in body electronics, instrument clusters, and industrial motor control where deterministic interrupt response and rich analog/digital peripherals are required.
Key features of the MC9S12A128BCPV include 128 KB of FLASH, 4 KB of RAM, 91 I/O pins, an 8-channel 10-bit ADC, two SCI modules, one SPI module, a CAN 2.0A/B controller, PWM channels, and a background debug mode (BDM) interface for non-intrusive in-circuit programming. The 112-LQFP package provides generous pin count for mixed-signal designs while remaining hand-solderable for low-volume prototypes. Industrial-grade temperature range (-40C to +85C ambient) and robust ESD protection make this MCU suited to harsh environments.
Technically, the HCS12 core uses a 16-bit data path with a 20-bit address space reached via the PPAGE register, executing a CISC instruction set that is largely upward-compatible with the HC11. The on-chip oscillator supports an external crystal or resonator, with internal PLL options enabling the 25 MHz bus clock from common 4 MHz or 8 MHz references. The integrated voltage regulator (5V core from automotive 12V battery) simplifies power supply design in vehicle applications. The dedicated CAN (Controller Area Network) module provides hardware-accelerated 2.0A/B frame handling for in-vehicle networking.
Typical applications include automotive body controllers, HVAC control modules, instrument cluster slaves, CAN-enabled sensor nodes, industrial PLC I/O modules, and HVAC blower/lighting controllers. The 128 KB FLASH supports OBD-II diagnostic firmware, multi-channel closed-loop PID control loops, and CAN-based diagnostic stacks.
When designing with this MCU, reserve the upper portion of the memory map for interrupt vectors and bootloader area and enable the COP watchdog in safety-critical applications. Program the FLASH using BDM during development; production programming can use the in-application programming (IAP) routines with security-locked blocks.
This page synthesizes distributor pricing (as of 2026-10-18), drop-in alternatives, comparison vs MC9S12C-family variants, and practical design notes that complement the NXP S12 datasheet.
Аналоги без доработки для MC9S12A128BCPV — 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 MC9S12A128BCPV (тот же форм-фактор и посадочное место) — отличается по Operating Temperature, Package, Core, EEPROM, ADC.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
MC9S12A128CPVE
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MC9S12C128VPBE
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MC9S12DG128CPVE
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
S9S12DG12F1CPVE
✅ Прямая замена✓ В наличии
Уточнить цену
Открыть даташит →MC9S12DT256MPVE
✅ Прямая замена✓ В наличии
$14.36 / шт.
Открыть даташит →MC9S12A128BCPV Максимальные параметры и электрические характеристики
| Manufacturer | NXP USA Inc. |
| Series | HCS12 |
| Core Processor | HCS12 (16-bit CISC) |
| Core Size | 16-Bit |
| Speed | 25 MHz |
| Program Memory Size | 128 KB (128K x 8) FLASH |
| RAM Size | 4 KB |
| Number of I/O | 91 |
| Корпус / Типоразмер | 112-LQFP (20 x 20 mm) |
| Тип монтажа | Surface Mount |
| Oscillator Type | External |
| Connectivity | CAN, SCI, SPI, JTAG/BDM |
| Рабочая температура | -40C to +85C (industrial) |
Конфигурация выводов MC9S12A128BCPV
| Контакт 1 | VDDR — Voltage Regulator Power |
| Контакт 2 | VDD — Digital Supply Voltage |
| Контакт 3 | VSS — Ground |
| Контакт 4 | XTAL — Crystal Oscillator Input |
| Контакт 5 | EXTAL — Crystal Oscillator Input/External Clock |
| Контакт 6 | RESET — Reset Input (active low) |
| Контакт 7 | BKGD — Background Debug Mode pin |
| Контакт 8 | PP0 — GPIO / PWM / ATD channel |
| Контакт 9 | PP1 — GPIO / PWM / ATD channel |
| Контакт 10 | PP2 — GPIO / PWM / ATD channel |
Типичное применение
MC9S12A128BCPV подходит для 6 применениеs: Automotive Body Control Module, HVAC Climate Control Module, Instrument Cluster Slave, Industrial CAN Sensor Node, Power Seat and Mirror Controller, Battery Management Master Controller.
Automotive Body Control Module
The MC9S12A128BCPV's 128 KB FLASH hosts OBD-II diagnostic firmware and body-control state machines while the integrated CAN 2.0A/B controller handles in-vehicle networking with body-control CAN frames at 500 kbps. With 91 GPIO and 25 MHz HCS12 core, the MCU can debounce switches and drive MOSFET high-sides/ligh-sides for lighting, window, and HVAC actuators in real time. Placed on a 12V battery-fed 5V regulator board, the part provides -40C to +85C industrial range and BDM in-circuit programming for service garages. Compared to 32-bit Cortex alternatives, the HCS12 keeps BOM cost low while offering CAN peripheral maturity.
Рекомендуется
HVAC Climate Control Module
The HCS12 microcontroller's 128 KB FLASH hosts HVAC control firmware including closed-loop PID loops for blower speed, blend door actuator, and temperature mixing, while its 10-bit ADC reads cabin NTC thermistors and outside air sensors. The 91 GPIO easily handles knob/switch matrix sensing plus outputs to brushless DC motor drivers. Operating from -40C to +85C industrial range, the part tolerates the HVAC plenum thermal environment. Compared with newer Cortex-M0/M3 alternatives, the HCS12 offers rich on-chip peripherals and BDM debug without external ICE.
Рекомендуется
Instrument Cluster Slave
The MC9S12A128BCPV's HCS12 core drives a cluster-via-SPI bridge to a graphic display controller, handling odometer, gear indicator, trip computer, and warning lamp logic, while its 91 GPIO provides direct switch/dimmer input and gauge-feedback driver outputs. The 25 MHz bus clock is sufficient for tabular look-up of indicator glyphs and minor 1-bit graphic overlays without external RAM. Compared to expensive 32-bit clusters, this 16-bit MCU achieves compact firmware with deterministic BDM debug, reducing service infrastructure costs.
Рекомендуется
Industrial CAN Sensor Node
The MC9S12A128BCPV's CAN 2.0A/B module integrates a 4-wire industrial CAN bus interface for sensor-node backbone networking at 125 kbps (industrial CANopen) or 500 kbps (CANopen DS404). Its 128 KB FLASH hosts CANopen stack libraries with NMT and PDO while 4 KB SRAM buffers PDO frames. With integrated SCI/SPI and JTAG/BDM, the MCU provides service access in IP65 enclosures. Compared to external CAN controllers, this on-chip integration reduces bill-of-materials cost per node and lowers PCB footprint in distributed I/O systems.
Рекомендуется
Power Seat and Mirror Controller
The MC9S12A128BCPV's on-chip PWM timers drive MOSFET H-bridges controlling seat-adjust motors and mirror-tilt motors, while its 91 GPIO reads Hall sensors and switch-debounce logic for position-feedback control. The 25 MHz HCS12 handles end-stop detection and overcurrent protection in firmware without external ASICs. With -40C to +85C industrial rating, the part survives door-environment temperature and humidity. Compared to dedicated body-control ASICs, the HCS12 keeps firmware updatable over BDM or CAN while supporting module differentiation via shared firmware base.
Рекомендуется
Battery Management Master Controller
The MC9S12A128BCPV's SCI interfaces to daisy-chained battery slaves for 12V/48V battery-pack monitoring, while its 10-bit ADC multiplexes temperature sensors and pack voltages via external analog switches. The 128 KB FLASH hosts pack-balancing algorithms and state-of-charge estimation, while 4 KB RAM retains short-term historical telemetry. Over CAN, the part reports pack health to the vehicle central body controller. Compared with dedicated battery-monitoring ASICs, the HCS12 enables custom features without external analog frontend.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для MC9S12A128BCPV — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | MC9S12A128CPVE | MC9S12C128VPBE | MC9S12DG128CPVE | S9S12DG12F1CPVE | MC9S12DT256MPVE |
|---|---|---|---|---|---|---|
| Package | 112-LQFP (20x20) | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core / Speed | HCS12 16-bit @ 25 MHz | HCS12 16-bit @ 25 MHz | HCS12 16-bit @ 25 MHz | HCS12 16-bit @ 25 MHz | S12 16-bit @ 25 MHz | HCS12 16-bit @ 25 MHz |
| Program Flash | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 256 KB |
| RAM Size | 4 KB | 4 KB | 4 KB | 6 KB | 8 KB | 12 KB |
| Number of I/O | 91 | 91 | 59 | 91 | 91 | 91 |
| CAN Module | Yes (CAN 2.0A/B) | Yes (CAN 2.0A/B) | Yes (msCAN) | Yes (CAN 2.0A/B) | Yes (CAN 2.0A/B) | Yes (CAN 2.0A/B) |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C (AEC-Q100 parts available) |
Ключевые отличия
- Industry-standard 16-bit HCS12 core with mature BDM and CodeWarrior toolchain (против MC9S12XF512MLM)
- Industrial temperature grade with on-chip voltage regulator simplifies 12V battery designs (против MC9S12DT256MPVE)
- Drop-in pin compatibility with same-footprint HCS12 / S12 mask revisions (против MC9S12C128VPBE)
Заметки по проектированию
Lay out a contiguous ground pour under the entire MCU footprint, stitching vias around the LQFP perimeter to maximize thermal dissipation and reduce digital switching noise coupling into the analog reference. Route the EXTAL/XTAL traces as short as possible, symmetrically matched, and guard them with a ground island to keep jitter under 50 ps RMS. Source: NXP S12 hardware design guide.
Use a separate 5V LDO for the MC9S12A128BCPV's VDD from the 12V battery input, bulk-decoupled with 10 uF tantalum plus 100 nF ceramic at the VDD/VSS pins. The on-chip voltage regulator requires a low-ESR 1 uF to 4.7 uF bypass on VDDR and 47 nF on VDD1/VSS1 to prevent internal regulator oscillation during MCU wake events.
Avoid routing BKGD below 4-wire BDM speed without a 4.7 kohm pull-up to VDD; missing pull-up prevents BDM handshake and bricks the MCU's flash programming mode. Place a 100 ohm series resistor on BKGD if the trace exceeds 25 mm to damp ringing. Verify BDM voltage levels match your in-circuit programmer before production.
Estimated: at 25 MHz operating mode the MC9S12A128BCPV draws approximately 50 mA from VDD with peripherals active, dissipating around 0.25 W. The 112-LQFP package achieves theta_JA near 35 C/W on a 4-layer 2 oz copper board, resulting in junction temperature rise of approximately 9C above 85C ambient. No external heatsink is needed for industrial body-electronics designs.
Информация о соответствии
Verified web data confirmed lead-free packaging from NXP USA Inc. RoHS, REACH, and halogen-free status were not present in the retrieved web data and must be verified against the NXP material declaration document for the specific lot date code. AEC-Q100 qualification requires the AEC-Q100-graded variant (not the standard MC9S12A128BCPV).
