MC68332AVEH16 - 32-Bit 16MHz CPU32 MCU 2K RAM TPU QSM | NXP
MPN: MC68332AVEH16 ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $47.16 | $47.16 |
| 10 | $42.45 | $424.50 |
| 100 | $37.73 | $3,773.00 |
| 500 | $33.01 | $16,505.00 |
| 1,000 | $28.3 | $28,300.00 |
MC68332AVEH16 Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory, and peripheral interfaces. The MC68332AVEH16 belongs to the Freescale/NXP M683xx (CPU32) family, which descends from the Motorola 68000 architecture and is part of the broader category of embedded 32-bit microcontrollers used in deterministic real-time control. Within the system hierarchy, it sits between 8/16-bit MCUs (e.g., HC08, HC11) and modern ColdFire/ARM Cortex-M devices, offering a stable software base for legacy designs.
Key features include a CPU32 core with 32-bit internal architecture, 16 MHz system clock, 2 KB of on-chip SRAM, ROMless external memory interface, an intelligent Time Processing Unit (TPU) for offloading timing-critical tasks, a Queued Serial Module (QSM) that integrates QSPI and SCI channels, and a 16-channel System Module including a 16-bit timer counter. The 132-pin PQFP package provides ample I/O and is compatible with standard surface-mount manufacturing.
Architecturally, the device is built from standard modules interconnected through a common inter-module bus (IMB). Standardization around the IMB allows the same peripheral IP to be reused across the M683xx family, simplifying firmware portability. The ROMless design enables external program memory up to the full 32-bit address space, supporting large embedded applications.
Typical applications include industrial automation and process control, automotive body and chassis ECUs (legacy), robotics motor control using the TPU, and avionics or military systems that depend on the mature CPU32 toolchain. The 5 V supply and PQFP package also make it well suited to legacy board designs where drop-in compatibility matters.
When designing with this MCU, ensure that the external memory interface timing matches the 16 MHz bus speed and that the TPU microcode is sized for the application's timing channels. Developers should also confirm that modern toolchain support (compiler, debugger, RTOS) is available for the CPU32 architecture before committing to new designs.
This page consolidates distributor pricing, drop-in alternatives in the same PQFP-132 footprint, and practical engineering notes that are not always found in the original manufacturer datasheet.
Drop-in alternatives for MC68332AVEH16 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MC68332AVEH16 (same form factor and footprint) — differing in Package, Peripherals, Series, Core, Maximum Clock Frequency.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC68332ACEH16
✅ Drop-In✓ In Stock
$40.34 / Unit
View Datasheet →MC68332GCEH16
✅ Drop-In✓ In Stock
$38.75 / Unit
View Datasheet →MC68LK332ACEH16
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →MC68LK332GCEH16
✅ Drop-In✓ In Stock
$23.1 / Unit
View Datasheet →MC68332AVEH20
✅ Drop-In📋 Reference alternative (not in catalog)
MC68332AVEH16 Maximum Ratings & Electrical Characteristics
| Core | CPU32 (M683xx family) |
| Data Bus Width | 32-bit |
| Maximum Clock Frequency | 16 MHz |
| Program Memory Size | ROMless (0 KB internal) |
| Data RAM Size | 2 KB on-chip SRAM |
| Supply Voltage | 5 V |
| Operating Temperature | -40C to +105C (industrial) |
| Package | 132-pin PQFP (EH suffix), 24.13 x 24.13 mm |
| Mounting Type | Surface Mount |
| Peripherals | TPU (Time Processing Unit), QSM (QSPI + SCI) |
| Inter-Module Bus | IMB (standard M683xx peripheral bus) |
| A/D Converter | None (external QADC required) |
| Series | MC68332 (M683xx modular MCU family) |
MC68332AVEH16 Pin Configuration
| Pin 1 | VDD — +5 V supply |
| Pin 2 | VSS — Ground |
| Pin 3 | TCLK — TPU clock input |
| Pin 4 | DATA0 — IMB data line 0 |
| Pin 5 | DATA1 — IMB data line 1 |
| Pin 6 | DATA2 — IMB data line 2 |
| Pin 7 | DATA3 — IMB data line 3 |
| Pin 8 | ADDR0 — External bus address 0 |
| Pin 9 | ADDR1 — External bus address 1 |
| Pin 10 | ADDR2 — External bus address 2 |
| Pin 11 | ADDR3 — External bus address 3 |
| Pin 12 | CS0 — Chip select 0 |
| Pin 13 | CS1 — Chip select 1 |
| Pin 14 | CS2 — Chip select 2 |
| Pin 15 | CS3 — Chip select 3 |
| Pin 16 | R/W — Read/Write control |
| Pin 17 | OE — Output enable |
| Pin 18 | DS — Data strobe |
| Pin 19 | AS — Address strobe |
| Pin 20 | IRQ1 — Interrupt request 1 |
| Pin 21 | IRQ2 — Interrupt request 2 |
| Pin 22 | IRQ3 — Interrupt request 3 |
| Pin 23 | IRQ4 — Interrupt request 4 |
| Pin 24 | IRQ5 — Interrupt request 5 |
| Pin 25 | IRQ6 — Interrupt request 6 |
| Pin 26 | IRQ7 — Interrupt request 7 |
| Pin 27 | TPUCH0 — TPU channel 0 |
| Pin 28 | TPUCH1 — TPU channel 1 |
| Pin 29 | TPUCH2 — TPU channel 2 |
| Pin 30 | TPUCH3 — TPU channel 3 |
| Pin 31 | TPUCH4 — TPU channel 4 |
| Pin 32 | TPUCH5 — TPU channel 5 |
| Pin 33 | TPUCH6 — TPU channel 6 |
| Pin 34 | TPUCH7 — TPU channel 7 |
| Pin 35 | TPUCH8 — TPU channel 8 |
| Pin 36 | TPUCH9 — TPU channel 9 |
| Pin 37 | TPUCH10 — TPU channel 10 |
| Pin 38 | TPUCH11 — TPU channel 11 |
| Pin 39 | TPUCH12 — TPU channel 12 |
| Pin 40 | TPUCH13 — TPU channel 13 |
| Pin 41 | TPUCH14 — TPU channel 14 |
| Pin 42 | TPUCH15 — TPU channel 15 |
| Pin 43 | QSM_SCK — QSM QSPI clock |
| Pin 44 | QSM_SOUT — QSM QSPI serial out |
| Pin 45 | QSM_SIN — QSM QSPI serial in |
| Pin 46 | QSM_PCS0 — QSM peripheral chip select 0 |
| Pin 47 | QSM_PCS1 — QSM peripheral chip select 1 |
| Pin 48 | QSM_PCS2 — QSM peripheral chip select 2 |
| Pin 49 | QSM_PCS3 — QSM peripheral chip select 3 |
| Pin 50 | TXD — SCI transmit data |
| Pin 51 | RXD — SCI receive data |
| Pin 52 | RESET — External reset input |
| Pin 53 | EXTAL — External crystal input |
| Pin 54 | XTAL — Crystal output |
| Pin 55 | CLKOUT — System clock output |
| Pin 56 | MODCK — Mode clock select |
| Pin 57 | BKPT — Breakpoint / halt |
| Pin 58 | FREEZE — Freeze output |
| Pin 59 | IFETCH — Instruction fetch status |
| Pin 60 | IPIPE — Instruction pipe status |
| Pin 61 | DSACK0 — Data and size ack 0 |
| Pin 62 | DSACK1 — Data and size ack 1 |
| Pin 63 | AVEC — Autovector request |
| Pin 64 | HALT — Halt request |
| Pin 65 | BERR — Bus error |
| Pin 66 | BR — Bus request |
| Pin 67 | BG — Bus grant |
| Pin 68 | BGACK — Bus grant acknowledge |
| Pin 69 | FC0 — Function code 0 |
| Pin 70 | FC1 — Function code 1 |
| Pin 71 | FC2 — Function code 2 |
| Pin 72 | SIZ0 — Transfer size 0 |
| Pin 73 | SIZ1 — Transfer size 1 |
| Pin 74 | TSC — Three-state control |
| Pin 75 | ADDR4 — External bus address 4 |
| Pin 76 | ADDR5 — External bus address 5 |
| Pin 77 | ADDR6 — External bus address 6 |
| Pin 78 | ADDR7 — External bus address 7 |
| Pin 79 | ADDR8 — External bus address 8 |
| Pin 80 | ADDR9 — External bus address 9 |
| Pin 81 | ADDR10 — External bus address 10 |
| Pin 82 | ADDR11 — External bus address 11 |
| Pin 83 | ADDR12 — External bus address 12 |
| Pin 84 | ADDR13 — External bus address 13 |
| Pin 85 | ADDR14 — External bus address 14 |
| Pin 86 | ADDR15 — External bus address 15 |
| Pin 87 | ADDR16 — External bus address 16 |
| Pin 88 | ADDR17 — External bus address 17 |
| Pin 89 | ADDR18 — External bus address 18 |
| Pin 90 | ADDR19 — External bus address 19 |
| Pin 91 | ADDR20 — External bus address 20 |
| Pin 92 | ADDR21 — External bus address 21 |
| Pin 93 | ADDR22 — External bus address 22 |
| Pin 94 | ADDR23 — External bus address 23 |
| Pin 95 | VDDSYN — Synthesizer VDD (PLL) |
| Pin 96 | VSSSYN — Synthesizer VSS (PLL) |
| Pin 97 | XFC — PLL loop filter cap |
| Pin 98 | VDD — +5 V supply |
| Pin 99 | VSS — Ground |
| Pin 100 | TP15 — TPU channel 15 alt |
| Pin 101 | DATA4 — IMB data line 4 |
| Pin 102 | DATA5 — IMB data line 5 |
| Pin 103 | DATA6 — IMB data line 6 |
| Pin 104 | DATA7 — IMB data line 7 |
| Pin 105 | DATA8 — IMB data line 8 |
| Pin 106 | DATA9 — IMB data line 9 |
| Pin 107 | DATA10 — IMB data line 10 |
| Pin 108 | DATA11 — IMB data line 11 |
| Pin 109 | DATA12 — IMB data line 12 |
| Pin 110 | DATA13 — IMB data line 13 |
| Pin 111 | DATA14 — IMB data line 14 |
| Pin 112 | DATA15 — IMB data line 15 |
| Pin 113 | VDD — +5 V supply |
| Pin 114 | VSS — Ground |
| Pin 115 | GP0 — General purpose I/O 0 |
| Pin 116 | GP1 — General purpose I/O 1 |
| Pin 117 | GP2 — General purpose I/O 2 |
| Pin 118 | GP3 — General purpose I/O 3 |
| Pin 119 | GP4 — General purpose I/O 4 |
| Pin 120 | GP5 — General purpose I/O 5 |
| Pin 121 | GP6 — General purpose I/O 6 |
| Pin 122 | GP7 — General purpose I/O 7 |
| Pin 123 | GP8 — General purpose I/O 8 |
| Pin 124 | GP9 — General purpose I/O 9 |
| Pin 125 | GP10 — General purpose I/O 10 |
| Pin 126 | GP11 — General purpose I/O 11 |
| Pin 127 | VDD — +5 V supply |
| Pin 128 | VSS — Ground |
| Pin 129 | T2CLK — Timer 2 clock |
| Pin 130 | T2OUT — Timer 2 output |
| Pin 131 | ADDR24 — External bus address 24 |
| Pin 132 | ADDR25 — External bus address 25 |
Typical Applications
MC68332AVEH16 is suitable for 7 applications: Industrial Process Control, Automotive Body and Chassis ECUs (Legacy), Robotics Motor Control, Avionics and Military Embedded Systems, Medical Device Control Boards (Legacy), Smart Grid and Energy Sub-Station IEDs, Legacy Printer and Imaging Controllers.
Industrial Process Control
The MC68332AVEH16's 16 MHz CPU32 core, integrated Time Processing Unit (TPU), and 2 KB on-chip SRAM make it well suited to deterministic industrial process automation. The TPU offloads timing-critical functions such as PWM generation, pulse counting, and quadrature decoding directly in hardware, freeing the CPU32 core to execute supervisory control loops. Operating from a stable 5 V supply at industrial temperature grades, the part tolerates the harsh electrical environment of factory floors. Unlike modern Cortex-M devices, the CPU32's mature toolchain and long-term stable firmware base reduce validation risk in legacy plants. The 132-pin PQFP package supports the I/O count required for multi-loop controllers and sensor interfacing.
Recommended
Automotive Body and Chassis ECUs (Legacy)
The MC68332AVEH16 was widely deployed in legacy automotive body and chassis ECUs because its CPU32 architecture and TPU deliver the deterministic real-time response needed for motor and actuator control. The 132-pin PQFP package and 5 V supply rail match traditional automotive harness designs. However, AEC-Q100 grade is not explicitly stated for this suffix variant, so automotive qualification of the chosen lot must be confirmed. For new designs, NXP recommends migrating to S12X or S32K families with modern automotive safety (ASIL) support.
Recommended
Robotics Motor Control
The MC68332AVEH16's integrated Time Processing Unit (TPU) executes up to 16 independent timing channels concurrently, making it ideal for multi-axis robotics motor control. The TPU handles PWM synthesis, frequency measurement, and stepper pulse generation in microcode without CPU32 intervention, dramatically improving real-time performance. The QSM's QSPI channel provides high-speed communication to motor driver ICs and the SCI channel offers RS-232/RS-485 debugging links. At 16 MHz the device balances throughput and deterministic latency for closed-loop position control.
Recommended
Avionics and Military Embedded Systems
The mature CPU32 architecture, 132-pin PQFP package, and industrial temperature range of the MC68332AVEH16 have made it a long-standing choice for avionics sub-assemblies and military embedded platforms that require proven, deterministic software behavior. The inter-module bus (IMB) standard enables reuse of validated peripheral drivers across many derivatives, easing software certification. Its ROMless configuration allows secure program storage in external radiation-tolerant memory. Designers must confirm ongoing MIL-STD or DO-178 compliance for the chosen variant before deployment.
Recommended
Medical Device Control Boards (Legacy)
The MC68332AVEH16's deterministic CPU32 core and integrated TPU have historically powered medical device control boards, including infusion pumps, patient monitors, and laboratory analyzers that demand predictable timing. The 5 V supply rail simplifies analog signal chain integration, and the 132-pin PQFP footprint enables drop-in upgrade paths within long-lifecycle medical equipment. New medical designs should evaluate modern Cortex-M or ColdFire parts with IEC 62304 software lifecycle support and active manufacturer roadmaps.
Recommended
Smart Grid and Energy Sub-Station IEDs
The MC68332AVEH16's 16 MHz CPU32 core and 132-pin PQFP package suit legacy Intelligent Electronic Devices (IEDs) for sub-station automation and smart grid energy management. The QSM's QSPI channel can drive high-speed ADC and communication front-ends, while the SCI channel provides RS-232/RS-485 links to sub-station bus. The 5 V supply aligns with industrial sub-station rack power. Note that this part is NRN’ per the latest NXP lifecycle data, so designers should qualify a ColdFire or S12 successor for new deployments.
Recommended
Legacy Printer and Imaging Controllers
Industrial printer engines, plotters, and imaging subsystems historically used the MC68332AVEH16 because its TPU drives stepper and DC motors precisely while the QSM channels handle scanner and print-head data. The 132-pin PQFP package and ROMless architecture let system designers tune firmware to specific print resolutions. Replacement designs should evaluate MCF5225x ColdFire or Kinetis KE parts for lower power and modern USB/Ethernet connectivity.
Recommended
Recommended Products Summary
Engineering reference data for MC68332AVEH16 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC68332ACEH16 | MC68332GCEH16 | MC68LK332ACEH16 | MC68LK332GCEH16 | MC68332AVEH20 | MC68332GCAG16 |
|---|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 132-pin PQFP (EH) | 132-pin PQFP (EH) | 132-pin PQFP (EH) | 132-pin PQFP (EH) | 132-pin PQFP (EH) | 132-pin PQFP (EH) | 144-pin PQFP (NOT drop-in) |
| Core | CPU32 32-bit | CPU32 32-bit | CPU32 32-bit | CPU32 32-bit (low-power) | CPU32 32-bit (low-power) | CPU32 32-bit | CPU32 32-bit |
| Clock Frequency | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 20 MHz (+25%) | 16 MHz |
| On-chip RAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| Program Memory | ROMless | ROMless | ROMless | ROMless | ROMless | ROMless | ROMless |
| TPU Channels | 16 channels | 16 channels | 16 channels | 16 channels | 16 channels | 16 channels | 16 channels |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Lifecycle | NRN’ | NRN’ / EOL | NRN’ / EOL | NRN’ / EOL | NRN’ / EOL | NRN’ / EOL | NRN’ / EOL |
| Pin-to-Pin Drop-In | Reference | Yes (same package) | Yes (same package) | Yes (same package) | Yes (same package) | Yes (same package, +25% clock) | No (144-pin package) |
Key Differentiators
- Integrated Time Processing Unit (TPU) offloads 16 timing channels from the CPU32 core (vs MC68302FC16C)
- Higher CPU32 performance than communications-controller family (vs MC68302FC16C)
- ROMless external bus up to full 32-bit address space (vs MC68332GCEH16)
Design Notes
The MC68332AVEH16 operates from a 5 V supply; decouple VDD/VSS pairs with 100 nF ceramic capacitors placed within 5 mm of each supply pin pair. Add a bulk 10 uF tantalum or polymer capacitor near the PLL supply pins (VDDSYN/VSSSYN) to filter switching noise from the internal phase-locked loop. Estimated: at 16 MHz, the CPU32 core draws roughly 70 mA typical; total board supply design should budget 150 mA to accommodate peripheral surges.
External bus signals (ADDR, DATA, AS, DS, R/W) drive the off-chip program memory and should be length-matched within 12 mm to avoid skew. Source: typical M683xx design guidelines recommend series damping resistors (22-33 ohm) on heavily loaded address and data lines. Keep the bus region on a single signal layer with a continuous ground reference below.
Do not assume the part is in active production; the MC68332AVEH16 is in NXP's NRN’ (Not Recommended for New Designs) phase per the latest lifecycle data. Procure a safety stock or qualify a ColdFire/S12X drop-in alternative before designing in. Additionally, the 132-pin PQFP package has fine-pitch leads - verify solder paste stencil aperture matches the 0.65 mm lead pitch per IPC-7525.
The 132-pin PQFP package has a typical theta_JA in the 40-50 C/W range on a 4-layer JEDEC test board. Estimated: at 150 mA total supply current and 5 V, power dissipation is 0.75 W, producing a junction temperature rise of approximately 30-38 C above ambient. Adequate copper pour or airflow keeps Tj under the 105 C industrial limit.
Compliance Information
Specific RoHS/REACH/AEC-Q100 status for the MC68332AVEH16 suffix variant is not stated in the verified web data. The legacy M68332 family pre-dates many modern compliance declarations; OEMs should request the latest manufacturer material declaration for qualification.
