MC9S12DG128MPV - 16-bit HCS12 MCU 128KB Flash 112-LQFP | NXP
MPN： MC9S12DG128MPV ✗ 停產MC9S12DG128MPV 概覽
A microcontroller (MCU) is a single-chip computer that integrates a processor core, memory, and peripherals on one die, forming the lowest level of the embedded-systems hierarchy: MCU -> embedded processor -> microprocessor-based system. The HCS12 (also written HC9S12 / S12) family is Motorola's (later Freescale, now NXP) 16-bit evolution of the classic 68HC11 architecture, widely used in automotive multiplexing and industrial control.
Key features of the MC9S12DG128 include 91 general-purpose I/O lines, CANbus, I2C, SCI, and SPI connectivity, an 8-channel enhanced capture timer with input capture/output compare, two 8-channel 10-bit ADCs, an 8-channel pulse-width modulator (PWM), and a watchdog timer (WDT). It operates from a 5V supply (with 2.5V support per listing data), making it well suited to legacy 5V automotive and industrial buses.
Architecturally, the S12 core uses a CISC instruction set with full upward compatibility from the 68HC11, an inter-IC bus for system resource mapping, on-chip clock generation, and background debug mode (BKGD/MODC pin) for unintrusive in-circuit debugging via the standard 6-pin BDM header.
Typical applications include automotive body and multiplex networking nodes (CAN), industrial PLC I/O modules, motor control with PWM outputs, and instrumentation requiring 5V-tolerant analog front ends with the dual 10-bit ADCs.
Design consideration: this part is listed as Obsolete by NXP; for new designs use the S12G or S12P families, and for maintenance of existing designs secure remaining authorized stock (Rochester Electronics continues to supply). Verify EEPROM and Flash endurance limits against the manufacturer datasheet for long-life products.
This page synthesizes distributor availability data, drop-in family alternatives, and obsolescence guidance not consolidated in the manufacturer datasheet.
直接替換替代品，適用於 MC9S12DG128MPV — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MC9S12DG128MPV （相同外形與佔位） — 差異在於 Package, Core Architecture, Supply Voltage, RAM Size, Program Memory Size.
MC9S12DG128MPVE
✅ 直接替換聯絡詢價
查看資料表 →MC9S12DG128BCPVE
✅ 直接替換📋 參考替代品（不在目錄中）
MC9S12DG256MPV
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
MC9S12DT128MPV
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MC9S12A256CPVE
✅ 直接替換📋 參考替代品（不在目錄中）
MC9S12DG128MPV 最大額定值與電氣特性
| Core Processor | HCS12 |
| Core Size | 16-Bit |
| Architecture | CISC |
| Speed | 25 MHz |
| Program Memory Size | 128KB (128K x 8) |
| Program Memory Type | FLASH |
| RAM Size | 8K x 8 |
| EEPROM Size | 2K x 8 |
| Number of I/O | 91 |
| Connectivity | CANbus, I2C, SCI, SPI |
| Peripherals | PWM, WDT |
| ADC Resolution | 10-bit |
| 供應電壓 | 2.5V / 5V |
| 封裝 / 外殼 | 112-LQFP (20 x 20 mm) |
| 安裝類型 | Surface Mount |
| Part Status | Obsolete |
| Series | HCS12 (MC9S12D family) |
MC9S12DG128MPV 112-lqfp (20 x 20 mm) 腳位配置指南
MC9S12DG128MPV（112-lqfp (20 x 20 mm) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： MC9S12DG128MPV.
請參閱 資料表 以查看完整腳位配置。
典型應用
MC9S12DG128MPV 適用於 6 應用s: Automotive Body & Multiplex Networking, Industrial PLC I/O Modules, Motor Control with PWM, Instrumentation & Sensor Data Acquisition, Gateways & Networked Nodes (CAN/SCI Bridges), Legacy Automotive ECU Maintenance & Remanufacturing.
Automotive Body & Multiplex Networking
The MC9S12DG128MPV was explicitly designed by Motorola for automotive multiplexing applications, and its on-chip msCAN controller, 91 I/O lines, and 5V-tolerant ports align directly with body-control module requirements. The 25 MHz HCS12 core comfortably runs CAN scheduling plus lamp/wiper/door control firmware within 128KB Flash, while the 2KB EEPROM stores trim and diagnostic data across power cycles. In this topology the MCU sits on the vehicle CAN bus, driving relays and reading switch arrays via its dual 8-channel 10-bit ADCs. The quantified benefit is single-chip integration: no external CAN controller or ADC is needed, cutting BOM count and PCB area versus a discrete 68HC11-plus-82C250 solution.
推薦
Industrial PLC I/O Modules
In programmable-logic-controller I/O cards, the MC9S12DG128MPV fits because its 91 GPIO lines provide dense discrete input/output capability, the SCI/SPI interfaces link to backplane coprocessors, and the watchdog timer enforces fail-safe behavior demanded in factory automation. The two 8-channel 10-bit ADCs digitize up to 16 analog sensor channels (4-20 mA via external conditioning), and the 8-channel PWM generates actuator drive signals without extra silicon. Running at 25 MHz from a 5V industrial rail simplifies noise immunity design, since 5V CMOS thresholds tolerate plant-floor transients better than 3.3V logic. The 112-LQFP keeps routing practical on two-layer carrier boards, and BDM debugging allows field firmware updates via the standard header.
推薦
Motor Control with PWM
DC and brushless motor drives benefit from the MC9S12DG128MPV's 8-channel PWM block, which generates complementary or independent PWM waveforms with programmable period and duty resolution, while the enhanced capture timer provides input capture for tachometer feedback and output compare for commutation sequencing. The dual 10-bit ADCs, synchronizable to the PWM period, sample current-shunt and back-EMF signals with reduced switching noise when triggered at PWM centers - a quantified benefit of 8 bits-plus effective resolution under typical 5V scaling. The HCS12 core executes PI current loops at kHz rates within the 25 MHz bus budget, and 128KB Flash retains multiple motor-profile tables. CANbus connectivity integrates the drive into higher-level machine networks.
推薦
Instrumentation & Sensor Data Acquisition
Bench and field instrumentation uses the MC9S12DG128MPV's two 8-channel, 10-bit ADCs to digitize up to 16 single-ended inputs at full HCS12 bus speed, with the SCI port streaming results to a host PC and SPI/I2C interfacing external precision references or displays. The 5V analog domain provides a wide 0-5V input span, improving signal-to-noise headroom over 3.3V MCUs - roughly a 1.5x larger LSB span (about 4.9 mV per count at 10 bits) before external amplification is required. The 8KB RAM buffers scan data, and 2KB EEPROM calibrations survive power loss. The 112-LQFP footprint suits compact handheld enclosures, and the 25 MHz core supports on-the-fly linearization and filtering without a companion DSP.
推薦
Gateways & Networked Nodes (CAN/SCI Bridges)
As a protocol gateway, the MC9S12DG128MPV bridges CANbus to SCI (RS-232/RS-485) and SPI/I2C peripherals, using its on-chip msCAN controller for the vehicle or machine bus and the SCI for service-tool access. The 128KB Flash accommodates dual firmware banks for field-updatable gateway images, and 8KB RAM holds message queues sized for typical 500 kbps CAN traffic buffering. Because CAN, SCI, SPI, and I2C are all on-chip, a two-chip gateway (this MCU plus a physical-layer transceiver) is achievable - a BOM reduction versus discrete controller-plus-UART designs. The watchdog enforces autonomous recovery on bus-off conditions, a quantified reliability gain for unattended installations in industrial networking.
推薦
Legacy Automotive ECU Maintenance & Remanufacturing
Independent remanufacturers and repair shops servicing 2000s-era ECUs rely on the MC9S12DG128MPV because it is the exact original silicon in many engine, transmission, and body controllers; sourcing the same die guarantees firmware binary compatibility without recalibration. Rochester Electronics continues life-cycle supply of this obsolete part, and the BDM interface on the BKGD/MODC pin permits in-circuit flash reprogramming of mileage, immobilizer, and calibration data per the Motorola device user guide. The 112-LQFP (20 x 20 mm) footprint matches original PCB land patterns, enabling direct socket-and-replace repair. Lead-free remanufactured variants (MPVE) support RoHS-compliant service builds where regulations require them.
推薦
推薦產品摘要
工程參考資料，適用於 MC9S12DG128MPV — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MC9S12DG128MPVE | MC9S12DG128BCPVE | MC9S12DG256MPV | MC9S12A256CPVE |
|---|---|---|---|---|---|
| Package | 112-LQFP (20 x 20 mm) | 112-LQFP (20 x 20 mm) - same | 112-LQFP (20 x 20 mm) - same | 112-LQFP (20 x 20 mm) - same | 112-LQFP (20 x 20 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors (Freescale) | NXP Semiconductors (Freescale) | NXP Semiconductors (Freescale) |
| Core / Speed | HCS12 16-bit, 25 MHz | HCS12 16-bit, 25 MHz | HCS12 16-bit, 25 MHz | HCS12 16-bit, 25 MHz | HCS12 16-bit, 25 MHz |
| Flash Memory | 128KB (128K x 8) | 128KB (128K x 8) | 128KB (128K x 8) | 256KB (256K x 8) | 256KB (256K x 8) |
| Connectivity | CANbus, I2C, SCI, SPI | CANbus, I2C, SCI, SPI | CANbus, I2C, SCI, SPI | CANbus, I2C, SCI, SPI | CANbus, I2C, SCI, SPI |
主要差異化特點
- Single-chip CAN integration (對比MC9S12A256CPVE)
- Lead-free drop-in variant available (對比MC9S12DG128BCPVE)
- Flash headroom within the same footprint (對比MC9S12DG256MPV)
設計說明
The MC9S12DG128MPV is Obsolete: any new design-in risks immediate redesign. For maintenance designs, secure a last-time-buy covering the product's remaining service life plus attrition, and qualify MC9S12DG128MPVE (lead-free) in parallel since plating differs. Verify the exact masking/ordering suffix (temperature range, speed grade) on received stock against your original BOM - legacy DG128 parts circulated under multiple suffixes with different grade markings.
The device operates from a 5V rail (2.5V support per listing data - confirm the exact VDDx/VDDR configuration in the Motorola device user guide for your masked variant). Decouple all VDD/VDDA/VDDR pin pairs with 0.1 uF ceramics placed within 5 mm of each pin pair, plus one bulk 10 uF per supply domain. The 5V analog domain of the dual 10-bit ADCs is sensitive to CAN transceiver switching; isolate VDDA with an LC filter and route CAN transceiver ground returns away from the ADC analog ground plane.
Use the single-wire BKGD/MODC background debug pin on a standard 6-pin BDM header for production programming and field diagnostics - it is non-intrusive and requires no JTAG port. Keep the BKGD trace short (under 10 cm) with a weak pullup as specified in the device user guide's BKGD/TAGHI/MODC section. During mode selection at reset, ensure MODC level is stable before the internal reset release; floating mode pins cause intermittent boot failures that mimic firmware bugs.
合規資訊
The MPV suffix predates lead-free conversion; the RoHS/lead-free equivalent is the MC9S12DG128MPVE suffix per NXP product page. No explicit RoHS/REACH/AEC-Q100 statements for the MPV appear in the provided data; request certificates from the distributor.
