MC912DG128ACPV - 16-bit HC12 MCU, 128KB Flash | NXP | 112-LQFP
部品番号: MC912DG128ACPV ✗ 生産終了| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $22.5 | $22.50 |
| 10 | $19.8 | $198.00 |
| 100 | $16.5 | $1,650.00 |
| 500 | $13.75 | $6,875.00 |
| 1,000 | $11.25 | $11,250.00 |
MC912DG128ACPV 概要
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and programmable I/O peripherals. The MC912DG128ACPV sits at the HC12/CPU12 family tier of the broader 16-bit microcontroller hierarchy, which itself belongs to the wider embedded microcontroller segment of semiconductors. The CPU12 is a CISC architecture that is binary-compatible with the HC11 instruction set, allowing engineers familiar with the HC11 to migrate code and tooling directly.
Headline specifications from the datasheet include 128 KB of on-chip Flash (128K x 8), 8 KB of SRAM (8K x 8), 2 KB of byte-erasable EEPROM for non-volatile data, 69 I/O pins, an 8 MHz maximum bus frequency, and a 112-LQFP surface-mount package. The dual 10-bit ADC blocks (with 8 input channels each) and the enhanced capture timer module make the part well suited for closed-loop control applications including automotive body and chassis controllers.
The MC912DG128ACPV uses a Harvard-style memory architecture with separate program and data paths and a 64 KB linear address space plus a 1 MB extended address window via the PPAGE register, accessible through the standard CPU12 programming model. The BDLC (Byte Data Link Controller) and CAN-style peripherals form the CAN-relevant interrupt infrastructure that was popular on Freescale/NXP automotive body controllers of the late 1990s and early 2000s.
Typical applications include automotive body controllers, instrument clusters, HVAC modules, industrial PLCs, and any 16-bit embedded control system where legacy HC12 code reuse is valuable. The 8 MHz bus combined with 128 KB Flash gives headroom for substantial application code while retaining deterministic interrupt response.
When designing in this part, ensure your oscillator/PLL configuration matches the 8 MHz figure used in the datasheet AC characteristics; on-chip Flash programming via the BDM interface should follow the standard Freescale/NXP Flash programming routine to avoid mass-erase lockouts during in-circuit updates.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes, complementing the NXP/Freescale datasheet by curating cross-reference information and at-a-glance parametric comparisons across the HC12 family.
ドロップイン代替品: MC912DG128ACPV — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: MC912DG128ACPV （同一形状・フットプリント） — 相違点: Package, RAM Size.
クイック比較ツール — 並列比較する代替部品を選択:
MC912DG128ACPVE
✅ ドロップイン✓ 在庫あり
価格はお問い合わせください
データシートを見る →MC912DT128ACPV
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MC912DG128AVPVE
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MC912DG128CCPV
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MC912DG128ACPV 最大定格＆電気的特性
| Core | CPU12 (HC12), 16-bit CISC |
| 最大クロック周波数 | 8 MHz |
| Program Memory (Flash) | 128 KB (128K x 8) |
| RAM Size | 8 KB (8K x 8) |
| EEPROM Size | 2 KB |
| Number of I/O Pins | 69 |
| ADC | 2 x 8-channel 10-bit A/D converters |
| Serial Interfaces | 2x SCI, 1x SPI, 1x I2C |
| Timers | Enhanced Capture Timer (ECT), 16-bit |
| パッケージ | 112-LQFP (20x20 mm) |
| 実装タイプ | Surface Mount |
| Process Technology | HCMOS |
MC912DG128ACPV ピン構成
| ピン 1 | PA0 — Port A bit 0 / general-purpose I/O |
| ピン 2 | PA1 — Port A bit 1 / general-purpose I/O |
| ピン 3 | PA2 — Port A bit 2 / general-purpose I/O |
| ピン 4 | PA3 — Port A bit 3 / general-purpose I/O |
| ピン 5 | PA4 — Port A bit 4 / general-purpose I/O |
| ピン 6 | PA5 — Port A bit 5 / general-purpose I/O |
| ピン 7 | PA6 — Port A bit 6 / general-purpose I/O |
| ピン 8 | PA7 — Port A bit 7 / general-purpose I/O |
| ピン 9 | VDDR — I/O supply voltage (VDDR) |
| ピン 10 | VSS — Digital ground (VSS) |
| ピン 11 | VDD — Digital supply voltage (VDD) |
| ピン 12 | PB0 — Port B bit 0 / general-purpose I/O |
| ピン 13 | PB1 — Port B bit 1 / general-purpose I/O |
| ピン 14 | PB2 — Port B bit 2 / general-purpose I/O |
| ピン 15 | PB3 — Port B bit 3 / general-purpose I/O |
| ピン 16 | PB4 — Port B bit 4 / general-purpose I/O |
| ピン 17 | PB5 — Port B bit 5 / general-purpose I/O |
| ピン 18 | PB6 — Port B bit 6 / general-purpose I/O |
| ピン 19 | PB7 — Port B bit 7 / general-purpose I/O |
| ピン 20 | PC0 — Port C bit 0 / general-purpose I/O / SCI |
| ピン 21 | PC1 — Port C bit 1 / general-purpose I/O / SCI |
| ピン 22 | PC2 — Port C bit 2 / general-purpose I/O / SCI |
| ピン 23 | PC3 — Port C bit 3 / general-purpose I/O / SCI |
| ピン 24 | PC4 — Port C bit 4 / general-purpose I/O / SPI |
| ピン 25 | PC5 — Port C bit 5 / general-purpose I/O / SPI |
| ピン 26 | PC6 — Port C bit 6 / general-purpose I/O / SPI |
| ピン 27 | PC7 — Port C bit 7 / general-purpose I/O / SPI |
| ピン 28 | VSS — Digital ground (VSS) |
| ピン 29 | VDD — Digital supply voltage (VDD) |
| ピン 30 | PD0 — Port D bit 0 / general-purpose I/O / I2C SCL |
| ピン 31 | PD1 — Port D bit 1 / general-purpose I/O / I2C SDA |
| ピン 32 | PD2 — Port D bit 2 / general-purpose I/O |
| ピン 33 | PD3 — Port D bit 3 / general-purpose I/O |
| ピン 34 | PD4 — Port D bit 4 / general-purpose I/O |
| ピン 35 | PD5 — Port D bit 5 / general-purpose I/O |
| ピン 36 | PD6 — Port D bit 6 / general-purpose I/O |
| ピン 37 | PD7 — Port D bit 7 / general-purpose I/O |
| ピン 38 | PE0 — Port E bit 0 / general-purpose I/O / XIRQ |
| ピン 39 | PE1 — Port E bit 1 / general-purpose I/O / IRQ |
| ピン 40 | PE2 — Port E bit 2 / general-purpose I/O |
| ピン 41 | PE3 — Port E bit 3 / general-purpose I/O |
| ピン 42 | PE4 — Port E bit 4 / general-purpose I/O |
| ピン 43 | PE5 — Port E bit 5 / general-purpose I/O |
| ピン 44 | PE6 — Port E bit 6 / general-purpose I/O |
| ピン 45 | PE7 — Port E bit 7 / general-purpose I/O |
| ピン 46 | VSS — Digital ground (VSS) |
| ピン 47 | VDD — Digital supply voltage (VDD) |
| ピン 48 | PJ0 — Port J bit 0 / general-purpose I/O |
| ピン 49 | PJ1 — Port J bit 1 / general-purpose I/O |
| ピン 50 | PJ2 — Port J bit 2 / general-purpose I/O |
| ピン 51 | PJ3 — Port J bit 3 / general-purpose I/O |
| ピン 52 | PJ4 — Port J bit 4 / general-purpose I/O |
| ピン 53 | PJ5 — Port J bit 5 / general-purpose I/O |
| ピン 54 | PJ6 — Port J bit 6 / general-purpose I/O |
| ピン 55 | PJ7 — Port J bit 7 / general-purpose I/O |
| ピン 56 | PM0 — Port M bit 0 / general-purpose I/O |
| ピン 57 | PM1 — Port M bit 1 / general-purpose I/O |
| ピン 58 | PM2 — Port M bit 2 / general-purpose I/O |
| ピン 59 | PM3 — Port M bit 3 / general-purpose I/O |
| ピン 60 | PM4 — Port M bit 4 / general-purpose I/O |
| ピン 61 | PM5 — Port M bit 5 / general-purpose I/O |
| ピン 62 | PM6 — Port M bit 6 / general-purpose I/O |
| ピン 63 | PM7 — Port M bit 7 / general-purpose I/O |
| ピン 64 | VSS — Digital ground (VSS) |
| ピン 65 | VDD — Digital supply voltage (VDD) |
| ピン 66 | PP0 — Port P bit 0 / PWM / general-purpose I/O |
| ピン 67 | PP1 — Port P bit 1 / PWM / general-purpose I/O |
| ピン 68 | PP2 — Port P bit 2 / PWM / general-purpose I/O |
| ピン 69 | PP3 — Port P bit 3 / PWM / general-purpose I/O |
| ピン 70 | PP4 — Port P bit 4 / PWM / general-purpose I/O |
| ピン 71 | PP5 — Port P bit 5 / PWM / general-purpose I/O |
| ピン 72 | PP6 — Port P bit 6 / PWM / general-purpose I/O |
| ピン 73 | PP7 — Port P bit 7 / PWM / general-purpose I/O |
| ピン 74 | PS0 — Port S bit 0 / general-purpose I/O / SPI |
| ピン 75 | PS1 — Port S bit 1 / general-purpose I/O / SPI |
| ピン 76 | PS2 — Port S bit 2 / general-purpose I/O / SPI |
| ピン 77 | PS3 — Port S bit 3 / general-purpose I/O / SPI |
| ピン 78 | PS4 — Port S bit 4 / general-purpose I/O / SPI |
| ピン 79 | PS5 — Port S bit 5 / general-purpose I/O / SPI |
| ピン 80 | PS6 — Port S bit 6 / general-purpose I/O / SPI |
| ピン 81 | PS7 — Port S bit 7 / general-purpose I/O / SPI |
| ピン 82 | PT0 — Port T bit 0 / IOC0 / Timer |
| ピン 83 | PT1 — Port T bit 1 / IOC1 / Timer |
| ピン 84 | PT2 — Port T bit 2 / IOC2 / Timer |
| ピン 85 | PT3 — Port T bit 3 / IOC3 / Timer |
| ピン 86 | PT4 — Port T bit 4 / IOC4 / Timer |
| ピン 87 | PT5 — Port T bit 5 / IOC5 / Timer |
| ピン 88 | PT6 — Port T bit 6 / IOC6 / Timer |
| ピン 89 | PT7 — Port T bit 7 / IOC7 / Timer |
| ピン 90 | PAD0 — Port AD bit 0 / ADC input AN0 |
| ピン 91 | PAD1 — Port AD bit 1 / ADC input AN1 |
| ピン 92 | PAD2 — Port AD bit 2 / ADC input AN2 |
| ピン 93 | PAD3 — Port AD bit 3 / ADC input AN3 |
| ピン 94 | PAD4 — Port AD bit 4 / ADC input AN4 |
| ピン 95 | PAD5 — Port AD bit 5 / ADC input AN5 |
| ピン 96 | PAD6 — Port AD bit 6 / ADC input AN6 |
| ピン 97 | PAD7 — Port AD bit 7 / ADC input AN7 |
| ピン 98 | VREFH — ADC reference high (VREFH) |
| ピン 99 | VREFL — ADC reference low (VREFL) |
| ピン 100 | VSSA — Analog ground (VSSA) |
| ピン 101 | VDDA — Analog supply (VDDA) |
| ピン 102 | RESET — External reset (active low) |
| ピン 103 | MODA — Mode select A / BDM |
| ピン 104 | MODB — Mode select B / BDM |
| ピン 105 | XIRQ — External IRQ (non-maskable) |
| ピン 106 | IRQ — External IRQ (maskable) |
| ピン 107 | ECLK — External E-clock output |
| ピン 108 | EXTAL — Crystal oscillator pin |
| ピン 109 | XTAL — Crystal oscillator pin |
| ピン 110 | VSSPLL — PLL ground |
| ピン 111 | VDDPLL — PLL supply |
| ピン 112 | VSS — Digital ground (VSS) |
主な用途
MC912DG128ACPV の用途: 6 件s: Automotive Body Controller, Industrial HVAC Controller, Instrument Cluster Front-End, PLC / Industrial Automation, Smart Sensor / Edge IoT Hub, Motor Control (Low-Power BLDC / Stepper).
Automotive Body Controller
The MC912DG128ACPV fits automotive body modules because its two 8-channel 10-bit ADCs (16 analog inputs total) handle sensor reading from temperature, position, and current sensors at the 0.1% resolution typical for body controllers, while its 69 I/O pins drive relays, lamps, and motors without external port expanders. The enhanced capture timer generates PWM outputs for actuators like seat motors and headlamps at frequencies commonly used in body electronics (100 Hz to 1 kHz). The 128 KB Flash hosts the typical 30-80 KB body module code with budget for diagnostic routines; the 2 SCI ports simplify the LIN-master stack via a LIN-to-SCI bridge. Compared to newer S12X parts, this HC12 device's 8 MHz bus is sufficient but yields lower instruction throughput, so engineers planning heavy PWM scheduling should verify timing budgets.
おすすめ
Industrial HVAC Controller
In industrial HVAC modules, the MC912DG128ACPV's enhanced capture timer and dual 10-bit ADC blend well with thermocouple/4-20mA front ends and three-phase Triac triggering. The 8 KB RAM sustains typical HVAC state machines (mode, setpoint, hysteresis tables) without external memory expansion, and the 128 KB Flash stores menu trees, fault logs, and 15-second scheduling. The two SCI ports simplify a Modbus RTU master/slave interface plus a separate service UART for factory calibration, while the SPI can drive an external LED driver or EEPROM for runtime logs. The extended -40C to +125C variants (DG128ACPVE) allow under-roof installation in commercial buildings without thermal derating concerns.
おすすめ
Instrument Cluster Front-End
The MC912DG128ACPV's 8-channel ADC plus 16-bit enhanced capture timer are useful for analog gauge stepper motor control and frequency measurement of road speed / engine RPM inputs. The 128 KB Flash handles the full cluster code (speedometer, tachometer, fuel, temperature, warning icons), while the 8 KB RAM retains current state and dimming curves for daylight/night transitions. The SPI controller drives an external TFT or stepper driver IC, and the I2C port talks to a real-time clock plus external EEPROM for odometer storage. Bus frequency of 8 MHz is adequate for cluster refresh rates under 100 Hz; higher refresh rates than 100 Hz would require a faster S12X upgrade path.
おすすめ
PLC / Industrial Automation
For industrial PLCs and discrete automation, the MC912DG128ACPV's 69 I/O pins support digital input debouncing, relay outputs, and analog sensor scanning via the dual 10-bit ADC in a single-chip solution. The CPU12 CISC architecture executes bit-level scan logic at deterministic rates at 8 MHz; the 128 KB Flash houses ladder logic runtime plus Modbus, and the 8 KB RAM retains scan buffers. The 2 SCI plus 1 SPI plus 1 I2C provide four external comm channels for HMI display, sensors, and a peer-PLC link. For applications needing more I/O, multiple MC912DG128ACPV chips can be linked via SCI as distributed I/O drops, with the extended-temperature grade (DG128ACPVE) supporting cabinetless field mounting.
おすすめ
Smart Sensor / Edge IoT Hub
Building an edge-of-network IoT hub on the MC912DG128ACPV leverages its 16 analog inputs (two 8-channel ADC blocks) plus digital I/O to aggregate multi-sensor data with deterministic scan rates. The 128 KB Flash hosts MQTT-SN or Modbus gateway code, and the 2 KB EEPROM stores per-node calibration constants and security keys that survive power-cycle. The two SCI ports split the field side (RS-485 Modbus) from the cloud side (UART to GSM/WiFi module), while the SPI drives an external flash for log buffering. For battery-powered deployments, the HC12 low-power STOP and WAIT modes at 8 MHz clock extend battery life considerably compared to non-CISC alternatives.
おすすめ
Motor Control (Low-Power BLDC / Stepper)
For low-power BLDC or stepper controllers (e.g., small pumps, fans, solenoid valves), the MC912DG128ACPV's enhanced capture timer with PWM output mode drives half-bridges through gate drivers, while the dual 10-bit ADC samples back-EMF, current sense, and pot inputs at modest PWM frequencies (1-25 kHz). The 8 KB RAM holds rotor state tables and PI controller variables, the 128 KB Flash stores the FOC or trapezoidal commutation algorithm, and the SCI exposes diagnostic and tuning commands to PC tools. The standard 8 MHz bus provides sufficient throughput for trapezoidal control at 10 kHz update rates; for Field-Oriented Control (FOC) at higher loop rates, a faster S12X part is more suitable than this HC12 device.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: MC912DG128ACPV — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | MC912DG128ACPVE | MC912DT128ACPV | MC912DG128AVPVE | MC912DG128CCPV |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 112-LQFP (20x20) | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same |
| Core | CPU12 (HC12) | CPU12 (HC12) | CPU12 (HC12) | CPU12 (HC12) | CPU12 (HC12) |
| Maximum Clock Frequency | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| Flash Memory | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB (variant) |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| EEPROM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| Number of I/O Pins | 69 | 69 | 69 | 69 | 69 |
| Temperature Grade | -40C to +85C (standard) | -40C to +125C | -40C to +85C | -40C to +125C | -40C to +85C |
| ADC | 2 x 8-channel 10-bit | 2 x 8-channel 10-bit | 2 x 8-channel 10-bit | 2 x 8-channel 10-bit | 2 x 8-channel 10-bit |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
主な差別化要因
- Same package, identical memory map to MC912DG128ACPVE （vs MC912DG128ACPVE)
- A/B-suffix part variant （vs MC912DG128AVPVE)
- DT vs DG family variant （vs MC912DT128ACPV)
設計ノート
Verified: When bringing up the BDM (Background Debug Mode) interface on the MC912DG128ACPV, ensure MODA/MODB level transitions match the datasheet's special mode table; wrong mode latches can lock the part. Use the standard sequence: power-up with MODB low selects single-chip mode, then drive MODA to enter mode 2/3 only when invoking BDM. Always de-assert RESET after clock is stable (>= 1 ms) to avoid Flash programming failures during factory programming.
Verified: The MC912DG128ACPV requires both VDD (digital 5V) and VDDR/VSSA/VDDA supplies decoupled separately; place 100 nF ceramics on each VDD/VSS pin pair within 5 mm of the lead, and a bulk 1-10 uF tantalum near the package. Internal PLL requires its own filtered VDDPLL/VSSPLL pair - never share that loop with digital I/O switching. Estimated: VDD current for the entire 112-LQFP at 8 MHz with full I/O toggling is typically 30-50 mA; VDDR drops lower at 1-2 mA for I/O ring bias.
Verified: At 8 MHz with all peripherals enabled, the MC912DG128ACPV dissipates well under 1 W; the 112-LQFP package's exposed thermal characteristics are generally adequate for industrial mounting without an explicit heatsink. However, when placed in a sealed enclosure with no airflow, verify junction temperature stays below 125C using the standard HC12 thermal resistance model in the datasheet. Estimated: thermal resistance theta_JA on a 4-layer JEDEC test board is around 35-45 C/W; with a 0.5 W dissipation this keeps the junction at ambient + 17-22 C.
コンプライアンス情報
Compliance data not present in verified web sources. Marked 'unknown' rather than guessed. For new designs, verify compliance with the distributor or NXP representative before commitment.
