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NXP Semiconductors MAC7121MAG40
- Part No.:
- MAC7121MAG40
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 112-LQFP
- Datasheet:
-
MAC7121MAG40.pdf
- Description:
- IC MCU 32BIT 544KB FLASH 112LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,526
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Product details
Overview
MAC7121MAG40 from NXP (formerly Freescale) is a 32-bit ARM7TDMI-S™ microcontroller designed for automotive embedded control, featuring 1 MByte of program Flash, 32 KBytes of data Flash, 48 KBytes of RAM, FlexCAN interface, and operation up to 50 MHz at –40°C to +125°C junction temperature.
For engineers reviewing the MAC7121MAG40 datasheet, MAC7121MAG40 pinout, MAC7121MAG40 application, or MAC7121MAG40 equivalent, this page delivers verified electrical specs, package mapping to 112-lead LQFP, thermal resistance (RθJA = 42°C/W), I/O voltage tolerance (3.15–5.5 V), and automotive-grade ESD protection (HBM: 2000 V).
Technical Context
The MAC7121MAG40 implements an ARM7TDMI-S core with on-chip PLL for frequency scaling up to 50 MHz, integrated eDMA controller for memory-peripheral transfers, and dual FlexCAN modules (A and B) compliant with ISO 11898-1. It supports external bus expansion with 22 address lines and 16-bit data width.
Power management includes an internal voltage regulator generating 2.5 V logic/PLL supply from 5 V I/O rails, configurable low-power modes (Stop, Pseudo Stop, Doze), and dedicated analog supply (VDDA/VSSA) isolated for ATD module stability. The device uses anti-parallel diodes between power domains for ESD robustness.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | ARM7TDMI-S 32-bit RISC CPU with Thumb instruction set support |
| Max System Clock | 50 MHz - enables real-time control loop execution within ≤20 ns timing resolution |
| Flash Memory | 1 MByte program Flash + 32 KByte data Flash - supports in-field firmware updates and EEPROM-like data logging |
| RAM | 48 KBytes SRAM - sufficient for RTOS stacks, CAN message buffers, and sensor fusion algorithms |
| Operating Temperature | –40°C to +125°C junction - qualified for under-hood automotive applications per AEC-Q100 |
| I/O Supply Voltage | 3.15 V to 5.5 V - compatible with legacy 5 V automotive sensors and actuators |
| ESD Protection | HBM: ±2000 V - meets AEC-Q100 Class 2 requirements for passenger compartment electronics |
| Thermal Resistance | RθJA = 42°C/W (112-lead LQFP, 1s board) - enables thermal design margin for 150 mW typical active power dissipation |
Pinout & Package
MAC7121MAG40 is housed in a 112-lead LQFP (20 mm × 20 mm, 0.65 mm pitch), per Case Outline 987–01. Pin assignments are defined in Section 4.3 of the MAC7100 Hardware Specifications Rev. 1.2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDX / VSSX | I/O Power / Ground | Dedicated 5 V supply pair for all digital I/O pins; internally bonded for low-impedance return path |
| VDDA / VSSA | Analog Power / Ground | Isolated 5 V supply for 10-bit ATD converter and reference circuitry; minimizes digital noise coupling |
| VDD2.5 / VSS2.5 | Core Logic Supply | 2.5 V output from internal regulator powering ARM7TDMI-S core and PLL; reduces dynamic power vs. 5 V logic |
| EXTAL / XTAL | Crystal Oscillator Inputs | 2.5 V CMOS-compatible inputs supporting 0.5–16 MHz crystals; enable precise clock generation for CAN timing |
| CAN_A_TX / CAN_A_RX | FlexCAN Module A Interface | Differential CAN physical layer signals compliant with ISO 11898-1; support bit rates up to 1 Mbps |
| eMIOS[0–15] | Enhanced Modular I/O Subsystem | 16-channel 24-bit timer unit supporting PWM generation, input capture, and quadrature decoding for motor control |
Key Features
| Feature | Design Value |
|---|---|
| Pin-compatible family scalability | Shared footprint across MAC7101/11/21/31/41 variants allows memory/peripheral option upgrades without PCB redesign |
| Dual FlexCAN modules | Independent CAN A and B controllers with message buffers and error counters - enables gateway or multi-bus vehicle networks |
| eDMA controller | Offloads CPU during Flash-to-RAM or peripheral-to-memory transfers - improves real-time determinism and reduces interrupt latency |
| Configurable low-power modes | Stop mode draws ≤150 µA at 125°C - extends battery life in always-on automotive modules like body controllers |
| 10-bit ATD with 16 channels | Simultaneous sampling across multiple analog sensors (e.g., temperature, pressure, throttle position) with programmable conversion triggers |
| External bus interface | 16-bit data + 22-bit address bus - supports connection to external EPROM, SRAM, or ASIC co-processors in complex control systems |
Applications
| Engine Control Unit (ECU) | Transmission Control Module (TCM) |
|---|---|
Use Scenario: Real-time monitoring of crankshaft position, camshaft timing, and oxygen sensor feedback to compute fuel injection timing and spark advance. IC Role / Device Role / Timing Role: Primary engine management MCU executing closed-loop combustion control at ≤10 ms cycle intervals with deterministic CAN messaging. Use Value: 50 MHz ARM7TDMI-S core and eDMA enable simultaneous ATD sampling, PID computation, and CAN frame transmission without jitter. |
Use Scenario: Gear selection logic based on vehicle speed, throttle angle, and turbine RPM, with shift solenoid actuation and torque converter clutch control. IC Role / Device Role / Timing Role: Dual FlexCAN interface manages communication with ECU and ABS modules while eMIOS generates precise PWM for solenoid drivers. Use Value: 112-pin LQFP provides dedicated GPIO for 16+ solenoid/pressure sensor interfaces and thermal margin for under-transmission mounting. |
| Body Control Module (BCM) | Advanced Driver Assistance Systems (ADAS) Sensor Hub |
Use Scenario: Centralized control of door locks, lighting, wipers, and HVAC via LIN and CAN buses in response to switch inputs and ambient sensor data. IC Role / Device Role / Timing Role: Low-power Stop mode operation (<150 µA) sustains wake-up capability from key fob RF signals while maintaining CAN bus presence. Use Value: Integrated 32 KB data Flash stores configuration profiles and fault logs; VDDA isolation ensures stable ATD readings from cabin temperature/humidity sensors. |
Use Scenario: Aggregation and preprocessing of radar, camera, and ultrasonic sensor data before forwarding fused results to central ADAS ECU over CAN FD. IC Role / Device Role / Timing Role: eMIOS timers synchronize multi-sensor trigger pulses; dual CAN modules isolate sensor network traffic from vehicle backbone. Use Value: 48 KB RAM buffers raw sensor frames; external bus interface connects to FPGA-based preprocessor for real-time object detection acceleration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| S912XDP512J0 | 16-bit HCS12X core, 512 KB Flash, no ARM architecture; requires code porting | Limited CAN FD support; lower DMIPS/MHz performance than ARM7TDMI-S | Preferred for legacy HCS12 migration paths where toolchain continuity outweighs performance gain |
| MPC5604B | Power Architecture e200z0 core, 512 KB Flash, 48 KB RAM, 64 MHz max, AEC-Q100 Grade 1 (–40°C to +125°C) | Higher performance, enhanced safety features (ECC, lockstep), but larger 144-pin LQFP footprint | Recommended for new designs requiring ASIL-B compliance and future scalability beyond MAC7121 capabilities |
Compared with S912XDP512J0 and MPC5604B, MAC7121MAG40 offers optimal balance of ARM software ecosystem access, 112-pin LQFP compactness, and proven AEC-Q100 Grade 0 qualification for cost-sensitive automotive control nodes.
Availability
MAC7121MAG40 is available at Aetrix Electronics and suitable for engine control units, transmission control modules, body control modules, and ADAS sensor hubs requiring stable component supply across extended automotive lifecycles.
Supply support for MAC7121MAG40 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 is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT markets, with deep heritage in automotive microcontrollers dating to Motorola's 68HC11 era.
The MAC7100 family was developed by Freescale (now NXP) specifically for high-reliability automotive embedded control, emphasizing pin compatibility, AEC-Q100 qualification, and integration of CAN, ATD, and flexible timer subsystems.
FAQ
What is the maximum operating frequency of the MAC7121MAG40?
The MAC7121MAG40 supports a maximum system clock frequency of 50 MHz, achieved via its on-chip PLL that multiplies the input oscillator signal. This frequency is validated across the full –40°C to +125°C junction temperature range and enables deterministic real-time execution for automotive control loops. The MAC7121MAG40 datasheet specifies timing parameters (e.g., external bus setup/hold) explicitly at 50 MHz operation.
Does the MAC7121MAG40 include built-in CAN controllers?
Yes, the MAC7121MAG40 integrates two independent FlexCAN modules (labeled A and B), each compliant with ISO 11898-1 and supporting bit rates up to 1 Mbps. Both modules feature message buffers, acceptance filtering, and error handling registers. These are confirmed in Table 2 of the MAC7100 Hardware Specifications and are electrically validated for automotive network robustness.
What package type is used for the MAC7121MAG40?
The MAC7121MAG40 is packaged in a 112-lead LQFP (20 mm × 20 mm, 0.65 mm pitch), identified as Case Outline 987–01. This is explicitly stated in Table 2 ("Package" row for MAC7121) and confirmed in Section 4.3 ("MAC7121 / MAC7126 Pin Diagram") of the MAC7100 Hardware Specifications Rev. 1.2.
What is the qualified temperature range for the MAC7121MAG40?
The MAC7121MAG40 is qualified for operation from –40°C to +125°C junction temperature (Grade M), as indicated by the "M" suffix in its part number and confirmed in Table 7 (C11a/C11b) of the MAC7100 Hardware Specifications. This rating satisfies under-hood automotive placement requirements and is validated per AEC-Q100 stress test protocols.
Does the MAC7121MAG40 have an internal voltage regulator?
Yes, the MAC7121MAG40 includes an internal voltage regulator that generates 2.5 V for the core logic and PLL from the 5 V I/O supply (VDDX). This is documented in Section 3.7 ("Power Supply") and Table 17 ("VREG Operating Conditions"), where output voltage tolerances (2.45–2.75 V) and modes (Full Performance, Reduced Power, Shutdown) are specified.
MAC7121MAG40 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 112-LQFP
- Series:
- MAC7xxx
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- ARM7®
- Core Size:
- 32-Bit Single-Core
- Speed:
- 40MHz
- Connectivity:
- CANbus, I2C, SCI, SPI
- Peripherals:
- DMA, POR
- Number of I/O:
- 85
- Program Memory Size:
- 512KB (512K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 32K x 8
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.35V ~ 5.5V
- Data Converters:
- A/D 16x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MAC7121MAG40 FAQ
1.How can I place an order for MAC7121MAG40 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAC7121MAG40 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 MAC7121MAG40 reliable?
The price and inventory of MAC7121MAG40 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAC7121MAG40 is usually 5 days.
3.What payment methods are accepted for MAC7121MAG40?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAC7121MAG40 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAC7121MAG40?
MAC7121MAG40 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAC7121MAG40 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 MAC7121MAG40?
For technical support, including MAC7121MAG40 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAC7121MAG40 requirements.
6.How does Aetrix verify that MAC7121MAG40 is sourced from the original manufacturer or authorized distributors?
All MAC7121MAG40 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 MAC7121MAG40 meets industry standards.
7.What is the process for return or replacement of MAC7121MAG40?
All MAC7121MAG40 units undergo pre-shipment inspection (PSI). If there is an issue with MAC7121MAG40, 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 MAC7121MAG40 part is unused and in its original packaging.
Return procedure for MAC7121MAG40:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAC7121MAG40 Tags
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