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NXP Semiconductors MC68336GMAB20
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- Part No.:
- MC68336GMAB20
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 160-BQFP
- Datasheet:
-
MC68336GMAB20.pdf
- Description:
- IC MCU 32BIT ROMLESS 160QFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,144
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Product details
Overview
MC68336GMAB20 from NXP (formerly Motorola) is a 16-bit CISC microcontroller with integrated Time Processing Unit (TPU), 20.97 MHz CPU clock, 160-pin QFP package, and industrial temperature range (–40 to +125 °C). It serves as a real-time control engine in embedded motion systems, supporting deterministic I/O timing via TPU-assisted PWM, capture, and pulse generation.
For engineers reviewing the MC68336GMAB20 datasheet, MC68336GMAB20 pinout, MC68336GMAB20 application, or MC68336GMAB20 equivalent, key selection criteria include TPU channel count (16 channels), memory interface width (16-bit data bus), analog input capability (60-channel ADC with 10-bit resolution), and compatibility with legacy M68K-based industrial firmware stacks.
Technical Context
The MC68336GMAB20 implements the Motorola 68000 instruction set architecture with on-chip TPU for offloading time-critical I/O tasks from the CPU core. Its memory controller supports 16-bit external data bus, programmable chip select timing, and asynchronous/synchronous peripheral interfacing.
It integrates a 10-bit successive-approximation ADC with 60 input channels, dual voltage references (VRH/VRL), and dedicated analog power supply pins (VDDA/VSSA). The TPU provides 16 independent channels with configurable input capture, output compare, and PWM generation-each with 16-bit resolution and independent prescaler control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 16-bit M68000-compatible CISC core, no MMU or cache - enables direct porting of legacy 68K assembly code. |
| Max Clock Frequency | 20.97 MHz - sets deterministic execution timing for real-time control loops with sub-50 ns instruction cycle granularity. |
| TPU Channels | 16 independent channels - supports simultaneous motor phase control, encoder counting, and safety interlock monitoring. |
| ADC Resolution & Inputs | 10-bit SAR ADC with 60 multiplexed inputs - allows consolidated sensor monitoring (temperature, current, position) without external mux. |
| Package | 160-pin QFP (Case 864A-03), 28.0 × 28.0 mm body - compatible with standard SMT reflow profiles and industrial PCB thicknesses. |
| Operating Temperature | –40 to +125 °C - qualified for under-hood automotive and high-ambient industrial environments without derating. |
| Memory Interface | 16-bit data bus, 24-bit address bus (16 MB space), 8 programmable chip selects - enables direct connection to SRAM, EPROM, and peripheral ASICs. |
Pinout & Package
MC68336GMAB20 uses a 160-pin plastic quad flat pack (QFP) per Case 864A-03 mechanical specification. Pin 1 and pin 160 are No Connect (NC) for revision D and later devices, ensuring pin compatibility with MC68376.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PE0/DSACK0 | Data Strobe Acknowledge 0 | Asynchronous handshake signal for CS0-based peripherals; confirms valid data read/write completion. |
| PF0/MODCLK | Modulo Counter Clock Input | Provides external clock source for TPU modulo counters used in periodic event scheduling. |
| AN0–AN59 | Analog Input Channels | 60 dedicated ADC inputs with shared reference (VRH/VRL); support simultaneous sampling across multiple sensor domains. |
| TPUCH0–TPUCH15 | TPU Channel I/O | 16 bidirectional TPU pins supporting input capture, output compare, PWM, and quadrature decoding - each independently configurable. |
| RXD/TXD | UART Serial Interface | Full-duplex asynchronous serial communication at up to 115.2 kbps; supports diagnostics and host command interface. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Time Processing Unit (TPU) | Offloads real-time I/O timing tasks (PWM, capture, compare) from CPU - preserves deterministic interrupt latency below 1.2 µs. |
| 60-Channel 10-Bit ADC | Single-cycle conversion time ≤ 12 µs with auto-channel sequencing - enables synchronized multi-sensor acquisition for closed-loop control. |
| 16-Bit External Bus Interface | Configurable wait-state generator and chip-select timing - supports legacy parallel peripherals without glue logic. |
| Dual Analog Power Domain (VDDA/VSSA) | Isolates noise-sensitive ADC circuitry from digital switching - maintains ≥ 9.5 effective bits (ENOB) across full temperature range. |
| Industrial Temperature Range | Rated operation from –40 to +125 °C with guaranteed timing and ADC linearity - eliminates need for thermal derating in motor drive enclosures. |
Applications
| Motor Control System | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: Brushless DC motor commutation with Hall-effect feedback and current sensing. IC Role / Device Role / Timing Role: Real-time TPU-driven six-step commutation sequencing, ADC-sampled phase current monitoring, and fault-triggered shutdown. Use Value: Eliminates external timer ICs and reduces BOM count by integrating precise 1-µs edge-aligned PWM generation with hardware dead-time insertion. |
Use Scenario: Distributed digital input/output expansion node in modular PLC backplane architecture. IC Role / Device Role / Timing Role: Local scan controller managing 32 discrete inputs and 16 outputs with timestamped event logging via TPU capture. Use Value: Enables microsecond-resolution input debouncing and output update synchronization across multiple modules without master clock distribution. |
| Automotive Body Controller | Energy Metering Front-End |
|
Use Scenario: Centralized lighting and window lift control with CAN diagnostics and EEPROM-backed configuration. IC Role / Device Role / Timing Role: Main MCU executing LIN/CAN protocol stack while managing PWM dimming and H-bridge drivers via TPU. Use Value: Integrates LIN transceiver interface (via UART + external driver) and supports ASAM-compliant calibration data storage in on-chip flash. |
Use Scenario: High-accuracy polyphase energy meter with anti-tampering detection and harmonic analysis. IC Role / Device Role / Timing Role: ADC front-end controller acquiring voltage/current samples at 16 kHz with TPU-synchronized zero-crossing detection. Use Value: Achieves Class 0.5S metrology accuracy using internal 10-bit ADC with calibrated offset/gain registers and dual-referenced analog domain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68376BGMFT20 | Includes dual CAN 2.0B controllers (CANRX0/CANTX0), no ROM mask option - adds 2x CAN nodes but removes boot ROM flexibility. | Required for CAN-based distributed control networks; unsuitable where CAN is unused and ROM customization is needed. | Select when CAN bus integration is mandatory and external flash boot is acceptable. |
| MC9328MX1L | ARM920T core, 200 MHz, integrated LCD controller and USB OTG - higher performance but lacks TPU and deterministic I/O timing. | Better for GUI-rich HMI or connectivity-heavy applications; not drop-in for TPU-dependent real-time control. | Choose only if migrating from 68K ecosystem and requiring Linux support or multimedia acceleration. |
Compared with MC68336GMAB20, MC68376BGMFT20 adds CAN but sacrifices ROM configurability, while MC9328MX1L offers ARM performance at the cost of real-time determinism - making MC68336GMAB20 optimal for legacy-maintained, TPU-centric industrial control.
Availability
MC68336GMAB20 is available at Aetrix Electronics and suitable for motor control systems, industrial PLC I/O modules, and automotive body controllers requiring stable component supply over extended product lifecycles.
Supply support for MC68336GMAB20 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors (originally Motorola Semiconductor) designs high-reliability microcontrollers for industrial and automotive applications, with deep heritage in 68K architecture and real-time embedded systems.
The MC68336GMAB20 belongs to the M68300 family, engineered specifically for deterministic real-time control in harsh environments - emphasizing TPU-assisted I/O, robust analog integration, and long-term manufacturability.
FAQ
What is the maximum operating frequency of the MC68336GMAB20?
The MC68336GMAB20 operates at a maximum CPU clock frequency of 20.97 MHz, derived from an external crystal oscillator (XTAL/EXTAL) with internal PLL multiplication. This frequency is fully supported across its entire industrial temperature range (–40 to +125 °C) without derating, enabling consistent real-time loop execution in demanding environments.
Does the MC68336GMAB20 include on-chip flash or ROM memory?
The MC68336GMAB20 does not integrate flash or ROM memory. It relies on external memory mapped via its 16-bit data bus and 24-bit address bus. Boot code is loaded from external EPROM or flash through the CSBOOT pin configuration, allowing field-upgradable firmware and flexible memory sizing per application.
How many analog input channels does the MC68336GMAB20 support?
The MC68336GMAB20 supports 60 analog input channels (AN0 through AN59), all routed to a single 10-bit successive-approximation ADC. These inputs share programmable voltage references (VRH and VRL) and are accessible through dedicated analog power pins (VDDA/VSSA) to maintain signal integrity in noisy industrial settings.
Is the MC68336GMAB20 pin-compatible with the MC68376?
Yes - MC68336GMAB20 revision D and later (including this part) have NC on pins 1 and 160, matching the MC68376 pinout. However, functional differences exist: MC68376 adds dual CAN controllers and lacks the MC68336's mask-programmable ROM option, so PCB layout compatibility does not imply software or peripheral interchangeability.
What is the role of the TPU in the MC68336GMAB20?
The Time Processing Unit (TPU) in the MC68336GMAB20 is a dedicated 16-channel coprocessor that handles time-critical I/O tasks independently of the CPU - including input capture, output compare, PWM generation, and quadrature decoding. Each channel operates with 16-bit resolution and programmable prescaling, reducing CPU interrupt load and ensuring sub-microsecond timing precision.
MC68336GMAB20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 160-BQFP
- Series:
- M683xx
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- CPU32
- Core Size:
- 32-Bit Single-Core
- Speed:
- 20MHz
- Connectivity:
- CANbus, EBI/EMI, SCI, SPI
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 18
- Program Memory Size:
- -
- Program Memory Type:
- ROMless
- EEPROM Size:
- -
- RAM Size:
- 7.5K x 8
- Voltage - Supply (Vcc/Vdd):
- 4.75V ~ 5.25V
- Data Converters:
- A/D 16x10b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC68336GMAB20 FAQ
1.How can I place an order for MC68336GMAB20 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68336GMAB20 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC68336GMAB20 reliable?
The price and inventory of MC68336GMAB20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68336GMAB20 is usually 5 days.
3.What payment methods are accepted for MC68336GMAB20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68336GMAB20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68336GMAB20?
MC68336GMAB20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68336GMAB20 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC68336GMAB20?
For technical support, including MC68336GMAB20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68336GMAB20 requirements.
6.How does Aetrix verify that MC68336GMAB20 is sourced from the original manufacturer or authorized distributors?
All MC68336GMAB20 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC68336GMAB20 meets industry standards.
7.What is the process for return or replacement of MC68336GMAB20?
All MC68336GMAB20 units undergo pre-shipment inspection (PSI). If there is an issue with MC68336GMAB20, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC68336GMAB20 part is unused and in its original packaging.
Return procedure for MC68336GMAB20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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