MC68332GVAG25557 - 32-bit CPU32 MCU 25MHz LQFP-144 | NXP
부품 번호: MC68332GVAG25557 ✗ 단종| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
MC68332GVAG25557 개요
A 32-bit microcontroller such as the MC68332 combines a processor core with memory, timers, and serial peripherals on one die, sitting at the top of the microcontroller hierarchy (semiconductor -> integrated circuit -> microcontroller -> 32-bit MCU). The MC68332 family is based on the CPU32 core, an instruction-set derivative of the classic MC68000 16/32-bit architecture, so existing 68000 assembly and C code can be recompiled with minimal changes.
Key features include the ROMless program-memory configuration, which requires external FLASH or EPROM connected via the 24-bit address bus and 16-bit external data bus; approximately 31 general-purpose I/O lines; the intelligent TPU coprocessor that offloads complex timing tasks such as PWM, input capture, and step-motor control from the CPU; and the QSM, which provides a queued SCI serial port plus a QSPI interface. The device is fabricated in HCMOS process technology for low power with TTL-compatible I/O.
Typical applications include industrial automation controllers, automotive ECU prototyping, motor-control and motion-timing systems leveraging the TPU, thermal sensor data loggers, and legacy test equipment. The external-memory architecture makes it especially suited to designs needing large code images or field-updatable firmware.
Design consideration: because the part is ROMless and clocks at 25 MHz, PCB layout must keep external memory traces short and matched, and the 5 V supply requires level-shifting when interfacing with modern 3.3 V peripherals.
This page synthesizes distributor sourcing data, drop-in same-family alternatives, and NXP community replacement guidance not consolidated in any single datasheet. Note: this suffix (,557) device is a Rochester Electronics-sourced legacy supply item for the discontinued Freescale MC68332 line; stock is allocated through authorized-legacy channels.
드롭인 대체품: MC68332GVAG25557 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: MC68332GVAG25557 (동일 폼 팩터 및 풋프린트) — 차이점: Mounting Type.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
MC68332GVAG16
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
MC68332GCAG25
✅ 드롭인 ⚠️ 사양 미검증✓ 재고 있음
$7.1 / 개
데이터시트 보기 →MC68332BCAG25
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
MC68332PVAG25
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
MC68332GVAG25557 최대 정격 & 전기적 특성
| Core Architecture | CPU32 (M68000-compatible 32-bit core) |
| Core Width | 32-bit |
| 최대 클록 주파수 | 25 MHz |
| Program Memory Type | ROMless (external memory required) |
| Internal RAM | 2 KB static RAM |
| 공급 전압 | 4.5 V to 5.5 V (5 V nominal) |
| Address Bus Width | 24-bit |
| External Data Bus Width | 16-bit |
| General-Purpose I/O Lines | 31 |
| Timing Coprocessor | Time Processor Unit (TPU) |
| Serial Module | QSM (queued SCI + QSPI) |
| Process Technology | HCMOS |
| Package Type | 144-terminal LQFP (LFQFP), square, 20x20 mm, gull-wing |
| JESD-30 Package Code | S-PQFP-G144 |
| 실장 유형 | Surface Mount |
| Terminal Form | Gull Wing |
MC68332GVAG25557 s-pqfp-g144 핀 구성 가이드
MC68332GVAG25557(s-pqfp-g144 패키지)의 핀 구성입니다. 이 디지털 IC에는 GPIO, 통신 인터페이스(UART, SPI, I2C), 전원 핀이 포함되어 있습니다. 대체 핀 기능과 구성 옵션은 제조사 데이터시트를 참조하십시오. 임베디드 시스템 설계와 PCB 레이아웃에 필수적입니다.
다음에 대한 상세 핀아웃 데이터 없음: MC68332GVAG25557.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
MC68332GVAG25557 적합 용도: 6 애플리케이션s: Industrial Automation Controllers, Motor Control and Motion Timing, Automotive ECU Legacy Maintenance, Sensor Data Acquisition and Logging, Legacy Test and Measurement Equipment, Networking and Communication Backplane Cards.
Industrial Automation Controllers
The MC68332GVAG25557 fits industrial PLC and machine-control boards where the CPU32 25 MHz core, 2 KB SRAM, and 31 general-purpose I/O lines drive relay banks, encoders, and operator panels. Its ROMless external-memory architecture lets engineers store large control programs in field-replaceable FLASH on the 24-bit/16-bit bus, enabling firmware updates without touching the MCU. Placed on a 5 V (4.5-5.5 V) industrial supply, the HCMOS I/O directly interfaces legacy 5 V TTL subsystems, avoiding level translation. The main trade-off is bus speed: keep external memory traces under 10 cm and add wait states for slower EPROM, since the 25 MHz clock tightens access timing versus 16 MHz family members.
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Motor Control and Motion Timing
The defining asset of the MC68332GVAG25557 in motion control is its Time Processor Unit (TPU) - a dedicated 16-channel timing coprocessor that autonomously generates PWM, performs input capture, and sequences stepper motors without CPU intervention. This offloads hard real-time tasks from the CPU32 core, so a 25 MHz main clock still sustains multi-axis coordination that would saturate a general-purpose timer on lesser MCUs of the era. Systems typically wire TPU channels to gate drivers and quadrature encoders, with the QSPI collecting analog feedback. Migration risk is high: modern replacement MCUs lack a true TPU equivalent, so timing code must be re-architected around PWM peripherals and software scheduling.
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Automotive ECU Legacy Maintenance
Many 1990s-era automotive ECUs and body controllers were built around the MC68332, and the GVAG 25 MHz ROMless variant served development and low-volume builds. The 5 V HCMOS I/O matches automotive sensor conditioning front-ends of that period, and the QSM's queued SCI links to diagnostic interfaces. For maintenance of such fleets, the Rochester Electronics-sourced MC68332GVAG25557 preserves form, fit, and function - same 144-LQFP footprint, same code compatibility - avoiding a costly board respin. Supply is allocation-limited, so order full predicted lifetime quantities now; NXP confirms no active pin-compatible successor exists in the current automotive portfolio.
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Sensor Data Acquisition and Logging
Engineers running thermal-sensor and process-data loggers on the MC68332 (as documented in NXP community replacement threads) rely on the Queued Serial Module: the QSPI scans external ADCs in hardware while the queued SCI streams records out, keeping CPU overhead minimal at 25 MHz. The ROMless architecture stores large buffering and logging code in external FLASH, and the 2 KB SRAM holds fast-working buffers. The 5 V rail simplifies interfacing with classic analog signal chains. Note that with only 2 KB internal RAM, long-term buffering must live in external SRAM on the 16-bit bus, so bus contention with program fetches should be budgeted when streaming continuously.
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Legacy Test and Measurement Equipment
Bench instruments, rack controllers, and ATE subsystems of the 1990s commonly used the MC68332 because the CPU32 core executes 68000-family code, the QSPI handles IEEE-488 bridge chips and precision ADCs, and the TPU generates stimulus timing. Service organizations repairing such equipment need the exact 25 MHz ROMless 144-LQFP device to keep instrument firmware and timing calibration intact - any clock derating to a 16 MHz variant would alter measurement timing. The MC68332GVAG25557 sourced via Rochester Electronics preserves cycle-exact behavior. Verify that replacement stock carries matching date-code tolerances for instruments where oscillator aging was calibrated against the original silicon.
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Networking and Communication Backplane Cards
The MC68332GVAG25557 suits legacy communication line cards and protocol converters: the 24-bit address bus addresses substantial external dual-port RAM or packet buffers, the 16-bit data bus sustains throughput, and the queued SCI provides serial uplinks. Chip-select and bus-control outputs of the CPU32 simplify glueless attachment of SRAM, FLASH, and UARTs at 25 MHz. In 5 V backplane environments, the HCMOS I/O connects directly to period-correct transceivers. For prolonged-life designs, however, board respins should migrate to active 3.3 V MCUs such as the ColdFire MCF5280 or Kinetis families, because this device's EOL status makes long-term single-source supply the dominant risk factor.
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추천 제품 요약
엔지니어링 참조 데이터: MC68332GVAG25557 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | MC68332GVAG16 | MC68332GCAG25 | MC68332BCAG25 | MCF5235CVM150J |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors (Freescale legacy) | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Max Clock Frequency | 25 MHz | 16 MHz | 25 MHz | 25 MHz | 150 MHz |
| Program Memory | ROMless (external) | ROMless (external) | Factory masked ROM | Factory masked ROM | External + on-chip SRAM/FLASH options |
| Internal RAM | 2 KB SRAM | 2 KB SRAM | 2 KB SRAM | 2 KB SRAM | 64 KB SRAM |
| Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 3.3 V |
| Timing Coprocessor (TPU) | Yes (16-channel) | Yes (16-channel) | Yes (16-channel) | Yes (16-channel) | No (eTPU on companion devices) |
| Lifecycle Status | EOL - Rochester legacy supply | EOL - Rochester legacy supply | EOL - Rochester legacy supply | EOL - Rochester legacy supply | Active (verify current status) |
주요 차별점
- Fastest ROMless family member for field-updatable systems (vs MC68332GVAG16)
- Firmware flexibility vs masked-ROM siblings (vs MC68332GCAG25)
- True form-fit-function legacy continuity (vs MCF5235CVM150J)
설계 노트
The MC68332GVAG25557 requires a regulated 4.5 V to 5.5 V supply. Budget decoupling with at least one 0.1 uF ceramic per power pin pair plus a 10 uF bulk capacitor near the 144-LQFP. Because the ROMless architecture drives a 16-bit external bus at 25 MHz, switching current spikes scale with bus activity - measure worst-case rail droop with representative code executing from external FLASH, not idle loops. Never rely on a 3.3 V rail: the HCMOS I/O and core are 5 V-only, and undervoltage below 4.5 V voids the clock specification.
Keep the external memory bus (24 address, 16 data lines) short and length-matched; at 25 MHz, bus turnaround and chip-select access timing allow little margin for slow EPROM or heavily loaded FLASH. Terminate address lines above ~10 cm with series resistors (22-33 ohm) to control ringing. Place the crystal/PLL loop components close to the clock pins and guard them from bus switching noise, since PLL jitter directly affects TPU timing accuracy in motor-control applications.
Do not substitute the 16 MHz MC68332GVAG16 into a design calibrated for 25 MHz operation - SCI baud rates, TPU periods, and external-memory wait states all scale with the clock, and NXP community threads (Replacement for MC68332, 2022/2026) confirm no pin-compatible active successor exists, so plan end-of-life strategy now: either lifetime-buy Rochester stock or schedule a redesign to MCX A / ColdFire. Also remember the ,557 build is Rochester-sourced: verify date codes and require authorized-channel documentation to avoid counterfeit silicon.
규정 준수 정보
This is a legacy (originally 1990s-era Motorola/Freescale) device supplied via Rochester Electronics; RoHS/REACH status was not stated in the verified distributor data. Original-generation MC68332 builds predate lead-free mandates - confirm with Rochester Electronics whether the current legacy build is RoHS/lead-free compliant before use in restricted markets.
