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Renesas M38K29F8LHP#U0
- Part No.:
- M38K29F8LHP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
M38K29F8LHP#U0.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 64LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,040
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Product details
Overview
M38K29F8LHP#U0 from Renesas Electronics is an 8-bit CMOS microcomputer based on the 740 family core, featuring 32 KB flash ROM, 2048 bytes RAM, full-speed USB 2.0 interface (4 endpoints), 8-channel 10-bit A/D converter, and three 8-bit timers. It targets PC peripheral I/O devices requiring integrated USB connectivity, analog sensing, and real-time control.
For engineers reviewing the M38K29F8LHP#U0 datasheet, M38K29F8LHP#U0 pinout, M38K29F8LHP#U0 application, or M38K29F8LHP#U0 equivalent, this device serves as a single-chip solution for embedded USB peripherals with mixed-signal capability, low-power operation (3.0–5.25 V), and LQFP-64 packaging - critical for space-constrained industrial and consumer I/O designs.
Technical Context
The M38K29F8LHP#U0 integrates a 740-family CPU core with 71 machine-language instructions and a minimum instruction execution time of 0.25 µs at 8 MHz system clock. Its USB subsystem supports both device and hub functions (2 downstream ports) compliant with Full-Speed USB 2.0.
It includes an 8-bit external bus interface, watchdog timer (16-bit), UART/Clock-synchronized serial I/O, LED direct-drive ports (4), and programmable pull-up resistors on 44 I/O pins. The clock generating circuit supports external ceramic resonators or quartz crystals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 740-family 8-bit CPU with 71 instructions and 0.25 µs min instruction time at 8 MHz |
| Memory | 32 KB flash ROM (32638 bytes user-accessible); 2048 bytes RAM |
| USB Interface | Full-Speed USB 2.0 device + hub controller with 4 endpoints and 2 downstream ports |
| A/D Converter | 10-bit resolution, 8 channels, with 8-bit reading mode supported |
| Timers | Three independent 8-bit timers plus one 16-bit watchdog timer |
| I/O Capability | 44 programmable CMOS I/O pins with software pull-up resistors and LED drive support (4 ports) |
| Supply Voltage | 3.0–5.25 V (L version); 4.0–5.25 V at 12/8 MHz, 3.0–5.25 V at 6 MHz |
| Operating Temperature | –20°C to +85°C - suitable for industrial-grade PC peripheral and embedded control applications |
Pinout & Package
Package: PLQP0064KB-A - 64-pin, 10 × 10 mm, 0.5 mm pitch plastic LQFP (HP variant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Main digital power (3.0–5.25 V) and reference ground for logic and I/O |
| XIN / XOUT | Crystal oscillator interface | Connects to external quartz crystal or ceramic resonator for system clock generation |
| D0+, D0−, D1+, D1−, D2+, D2− | USB transceiver I/O | Full-Speed USB 2.0 differential pairs: upstream (D0), two downstream ports (D1, D2) |
| P00–P07, P10–P17, etc. | Programmable I/O ports | 44 total CMOS I/O pins; individually configurable as input/output with pull-up control |
| USBVREF | USB reference voltage output | Provides internal 3.3 V reference for USB transceiver; external supply required if VCC < 4.0 V |
| TrON | USB pull-up control | Drives 1.5 kΩ external resistor on D0+ to signal USB device connection to host |
| RESET | Active-low reset input | Asynchronous reset pin; must be held low during power-up until stable VCC is reached |
| P60–P63 | LED direct-drive outputs | Capable of sourcing/sinking sufficient current to drive LEDs without external drivers |
Key Features
| Feature | Design Value |
|---|---|
| Integrated USB 2.0 Device + Hub | Eliminates need for external USB PHY or hub IC in PC peripheral designs |
| 8-channel 10-bit A/D Converter | Enables local analog sensor acquisition (e.g., temperature, voltage) without external ADC |
| Flash Memory (32 KB) | Supports field firmware updates and eliminates mask-ROM NRE costs for low-to-mid volume production |
| 44 Programmable I/O Pins | Provides flexible interface mapping for GPIO, serial, bus, and interrupt signals in compact layouts |
| LED Direct-Drive Ports (4) | Reduces BOM count by integrating current drivers for status indicators or simple displays |
| External 8-bit Bus Interface | Allows expansion with external memory or peripherals using standard parallel addressing/control |
Applications
| USB Keyboard/Mouse Hub | Industrial Data Logger |
|---|---|
Use Scenario: Compact USB composite device aggregating multiple HID inputs into a single upstream port. IC Role / Device Role / Timing Role: Primary MCU managing USB enumeration, HID report parsing, and multi-port polling via internal hub logic. Use Value: Reduces component count by integrating USB device + hub + A/D in one chip, enabling cost-effective dual-mode HID hubs with analog monitoring capability. |
Use Scenario: Standalone battery-powered sensor node recording environmental parameters over time. IC Role / Device Role / Timing Role: System controller handling analog sensor sampling (via 10-bit A/D), nonvolatile logging (flash ROM), and USB mass-storage-class data export. Use Value: Enables direct USB data dump without host driver development, leveraging built-in USB stack and flash storage for firmware + logs. |
| POS Peripheral Controller | Embedded Test Fixture UI |
Use Scenario: Point-of-sale accessory (e.g., barcode scanner + magnetic stripe reader) connecting via USB to terminal. IC Role / Device Role / Timing Role: Real-time interface coordinator between multiple sensors, LED indicators (P60–P63), and USB host, using 8-bit timers for precise decode timing. Use Value: Single-chip integration shortens design cycle and improves reliability versus discrete MCU + USB bridge solutions. |
Use Scenario: Lab equipment front panel with pushbuttons, LEDs, and analog test point monitoring. IC Role / Device Role / Timing Role: Local UI processor managing key wake-up interrupts (P33/ExINT), LED feedback, and real-time A/D sampling of test signals. Use Value: On-chip 44 I/O and LED drivers simplify PCB layout; 10-bit A/D enables accurate calibration and diagnostics without external components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit USB microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F566TEADFP#30 | 32-bit RX66T core, 256 KB flash, no integrated USB PHY - requires external transceiver | Higher performance motor control; lacks native USB device/hub functionality | Select when needing >100 DMIPS processing or FOC algorithms; not drop-in for USB peripheral roles |
| STM32F042F4P6 | Cortex-M0, 16 KB flash, integrated USB 2.0 FS device (no hub), 12-bit A/D (16 ch) | Stronger analog feature set but no USB hub or LED drivers; different toolchain and ecosystem | Prefer for new designs prioritizing ARM ecosystem and higher-resolution A/D; requires layout changes and firmware rewrite |
Compared with R5F566TEADFP#30 and STM32F042F4P6, the M38K29F8LHP#U0 uniquely combines USB device + hub, LED drivers, and flash-based 8-bit control in a single LQFP-64 package - making it irreplaceable for legacy-compatible, cost-sensitive USB peripheral I/O where minimal external components are mandatory.
Availability
M38K29F8LHP#U0 is available at Aetrix Electronics and suitable for USB peripheral controllers, industrial data loggers, POS accessories, and embedded test fixture UIs requiring stable component supply across extended product lifecycles.
Supply support for M38K29F8LHP#U0 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
Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and enterprise applications.
The 38K2 Group - including the M38K29F8LHP#U0 - was designed specifically for cost-sensitive PC peripheral and embedded I/O applications requiring integrated USB 2.0 device + hub functionality, analog sensing, and compact 8-bit control.
FAQ
What is the maximum system clock frequency supported by the M38K29F8LHP#U0?
The M38K29F8LHP#U0 supports a maximum system clock frequency of 8 MHz in through mode, yielding a minimum instruction execution time of 0.25 µs. Higher frequencies are not supported per the official datasheet; overclocking voids specifications and may cause USB timing violations or A/D conversion errors in the M38K29F8LHP#U0.
Does the M38K29F8LHP#U0 include an integrated USB PHY?
Yes, the M38K29F8LHP#U0 integrates a full-speed USB 2.0 PHY with dedicated D+/D− pins (D0±, D1±, D2±) and internal termination. It requires only external 1.5 kΩ pull-up on D0+ via TrON to signal USB device attachment - no external transceiver is needed for basic USB device or hub operation in the M38K29F8LHP#U0.
What package type is used for the M38K29F8LHP#U0?
The M38K29F8LHP#U0 uses the PLQP0064KB-A package: a 64-pin, 10 × 10 mm, 0.5 mm pitch plastic LQFP (HP variant). This differs from the FP variant (PLQP0064GA-A, 14 × 14 mm, 0.8 mm pitch); footprint and thermal characteristics are not interchangeable for the M38K29F8LHP#U0.
Can the M38K29F8LHP#U0 operate from a 3.3 V supply?
No - the M38K29F8LHP#U0 is an "L version" device rated for 3.0–5.25 V operation, but its USB transceiver requires ≥4.0 V to use the internal 3.3 V USBVREF. At 3.3 V supply, USB functionality is unsupported unless an external 3.3 V reference is applied to USBVREF, which is not recommended per Renesas design guidelines for the M38K29F8LHP#U0.
How many A/D converter channels does the M38K29F8LHP#U0 support, and what is their resolution?
The M38K29F8LHP#U0 supports eight analog input channels (AN0–AN7) with 10-bit resolution. Conversion results can be read as full 10-bit values or truncated to 8-bit format for faster processing - a hardware-supported mode confirmed in the functional description section of the M38K29F8LHP#U0 datasheet.
M38K29F8LHP#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-LQFP
- Series:
- 740/38000
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- 740
- Core Size:
- 8-Bit
- Speed:
- 8MHz
- Connectivity:
- EBI/EMI, SIO, UART/USART, USB
- Peripherals:
- LED, PWM, WDT
- Number of I/O:
- 44
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.25V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
M38K29F8LHP#U0 FAQ
1.How can I place an order for M38K29F8LHP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for M38K29F8LHP#U0 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 M38K29F8LHP#U0 reliable?
The price and inventory of M38K29F8LHP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M38K29F8LHP#U0 is usually 5 days.
3.What payment methods are accepted for M38K29F8LHP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M38K29F8LHP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M38K29F8LHP#U0?
M38K29F8LHP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M38K29F8LHP#U0 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 M38K29F8LHP#U0?
For technical support, including M38K29F8LHP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M38K29F8LHP#U0 requirements.
6.How does Aetrix verify that M38K29F8LHP#U0 is sourced from the original manufacturer or authorized distributors?
All M38K29F8LHP#U0 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 M38K29F8LHP#U0 meets industry standards.
7.What is the process for return or replacement of M38K29F8LHP#U0?
All M38K29F8LHP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with M38K29F8LHP#U0, 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 M38K29F8LHP#U0 part is unused and in its original packaging.
Return procedure for M38K29F8LHP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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