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Renesas M37272E8FP
- Part No.:
- M37272E8FP
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
M37272E8FP.pdf
- Description:
- MICROCONTROLLER, 8-BIT, OTPROM,
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Inventory:4,258
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Product details
Overview
M37272E8FP from Renesas Electronics is an 8-bit CMOS microcomputer with integrated closed caption decoder and on-screen display (OSD) controller, featuring 32 KB ROM, 1152 bytes RAM, six 8-bit timers, six PWM outputs, and dual I²C-BUS interfaces - designed for TV channel selection systems requiring real-time OSD overlay and CC data extraction.
For engineers reviewing the M37272E8FP datasheet, M37272E8FP pinout, M37272E8FP application, or M37272E8FP equivalent, this page delivers verified technical context, package mapping, functional pin roles, confirmed alternatives, and supply-ready availability details - all grounded in Renesas' official documentation for M37272E8FP.
Technical Context
The M37272E8FP integrates a dedicated data slicer for NTSC/PAL closed caption signal recovery and a full OSD processor supporting 32×2 character display with 8 color options, 128×512 pixel positioning, and 8 character size modes. Its dual I²C-BUS interface enables concurrent communication with tuner, EEPROM, and display subsystems.
It features two independent clock domains: one for main CPU operation (up to 8 MHz crystal input at XIN/XOUT), and another for OSD timing (sub-clock input/output via P26/P27). The 6-channel 6-bit A-D comparator supports analog sensor interfacing, while six N-channel open-drain PWM pins (P00–P05) serve both dimming control and external interrupt functions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 8-bit CMOS microcontroller with 71-instruction set and 0.5 µs min instruction cycle at 8 MHz |
| Memory | 32 KB on-chip ROM + 1152 bytes RAM (includes ROM correction memory) |
| OSD Capability | 32×2 character display, 16×20 dot matrix per character, 8 colors per character unit, 128H × 512V positioning resolution |
| Timers & PWM | Six independent 8-bit timers; six PWM outputs (P00–P05) with N-channel open-drain structure |
| Analog Interface | 6-channel 6-bit A-D comparator (AD1–AD6 on P15, P16, P17, P30, P31, P06) |
| Communication | Dual multi-master I²C-BUS (SCL1/SDA1 and SCL2/SDA2 on P11–P14); 8-bit serial I/O (SCLK/SOUT/SIN on P20–P22) |
| Power Profile | 165 mW typical in high-speed mode (5 V, 8 MHz XIN, OSD/data slicer active); 0.33 mW in low-speed mode (32 kHz sub-clock) |
Pinout & Package
Package: 42-pin plastic molded SSOP (Outline 42P2R-A/E) - lead pitch 0.65 mm, body width 10.0 mm. Pin 14 is AVCC (analog power supply) for M37272E8FP, distinct from NC on earlier variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00–P05 | PWM output / I/O port | N-channel open-drain outputs usable as PWM0–PWM5; also general-purpose I/O with programmable direction |
| P11–P14 | I²C-BUS interface | SCL1/SDA1 and SCL2/SDA2 - dual multi-master I²C ports with open-drain output structure |
| P20–P22 | Serial I/O | SCLK (synchronous clock), SOUT (data out), SIN (data in) - configurable for master/slave serial communication |
| P26/P27 | OSD clock & sub-clock | OSC1/XCIN (input) and OSC2/XCOUT (output) - dedicated pins for OSD timing and low-power sub-clock domain |
| P50/P51 | Video sync inputs | HSYNC and VSYNC - direct horizontal/vertical synchronization capture for precise OSD raster alignment |
| P52–P55 | OSD RGB output | CMOS outputs for R, G, B video signals and OUT1 - drive composite OSD overlay onto base video signal |
Key Features
| Feature | Design Value |
|---|---|
| Closed Caption Data Slicer | Integrated NTSC/PAL CC signal recovery circuit compliant with EIA-608 standard - eliminates need for external slicer IC |
| On-Screen Display Engine | Hardware-accelerated OSD generator supporting smooth roll-up, windowing, border, and automatic solid space insertion |
| Dual I²C-BUS Master | Two independent I²C controllers enable simultaneous communication with tuner (SCL1/SDA1) and EEPROM/display driver (SCL2/SDA2) |
| Low-Power Sub-Clock Domain | Dedicated 32 kHz oscillator path (P26/P27) allows OSD and data slicer to remain active while CPU sleeps - reduces standby power to 0.33 mW |
| 12-V Tolerant I/O | Six pins (P52–P55, P10, P07) withstand 12 V - simplifies interface to legacy TV video circuits without level-shifting |
Applications
| TV Closed Caption System | OSD-Based Channel Selector |
|---|---|
|
Use Scenario: Real-time decoding and display of EIA-608 closed caption data on analog NTSC TVs. IC Role / Device Role / Timing Role: Dedicated data slicer extracts CC waveform; OSD engine overlays decoded text with precise HSYNC/VSYNC-aligned timing. Use Value: Enables compliance with FCC captioning mandates using single-chip solution - no external decoder or video processor required. |
Use Scenario: On-screen menu navigation for analog TV channel tuning and settings adjustment. IC Role / Device Role / Timing Role: Generates 32×2 character overlay with 8-color support and smooth roll-up animation synchronized to video field rate. Use Value: Eliminates need for external character ROM or graphics controller - reduces BOM count and PCB area by >40% vs discrete solutions. |
| Legacy CRT Monitor UI | Set-Top Box Status Overlay |
|
Use Scenario: Displaying brightness/contrast/volume controls and signal status on CRT monitors with analog RGB input. IC Role / Device Role / Timing Role: Drives R/G/B/OUT1 outputs directly into monitor video path; uses HSYNC/VSYNC for stable raster lock. Use Value: Provides flicker-free, jitter-free OSD with hardware-controlled dot positioning - avoids software-rendering latency and timing drift. |
Use Scenario: Overlaying channel name, signal strength, and parental lock status on STB output video. IC Role / Device Role / Timing Role: Interfaces via I²C to tuner and demodulator ICs; generates semi-transparent windowed OSD using built-in attribute logic. Use Value: Supports dynamic content updates at 60 Hz without CPU intervention - frees main MCU for conditional access and IR processing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar closed caption and OSD controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M37272EFSP | 60 KB ROM, 1472 bytes RAM, same pinout and peripheral set - higher memory capacity for extended OSD menus and font tables | Supports deeper menu hierarchies and larger character sets; requires identical PCB layout but larger firmware image | Select M37272EFSP when firmware exceeds 32 KB or when additional RAM is needed for multi-language OSD buffers |
| UPD78F0503GC-GAH-AX | 16-bit RL78 core, 64 KB flash, no integrated data slicer - requires external CC decoder IC and separate OSD timing logic | Lacks hardware CC slicer and dedicated OSD engine; relies on software rendering and external video sync conditioning | Choose UPD78F0503GC-GAH-AX only if migrating to modern 16-bit platform with existing firmware investment and external video IP available |
Compared with M37272E8FP, M37272EFSP offers scalable memory while maintaining full hardware compatibility, whereas UPD78F0503GC-GAH-AX shifts system complexity to software and external components - increasing design effort and component count.
Availability
M37272E8FP is available at Aetrix Electronics and suitable for analog TV manufacturing, legacy monitor refurbishment, and set-top box OSD subsystems requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for M37272E8FP 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 formed in 2010 through merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power devices for industrial, automotive, and consumer applications.
The M37272 series belongs to Renesas' legacy 8-bit microcontroller family targeting analog video subsystems; it was specifically architected to integrate closed caption decoding and hardware OSD generation into a single chip for cost-sensitive TV designs.
FAQ
What is the maximum operating frequency of the M37272E8FP?
The M37272E8FP supports a maximum crystal oscillation frequency of 8 MHz at the XIN/XOUT pins, delivering a minimum instruction execution time of 0.5 µs. Its internal clock generating circuit accepts ceramic resonators or quartz crystals; the OSD subsystem operates independently via the P26/P27 sub-clock domain at 32 kHz.
Does the M37272E8FP include on-chip memory for firmware storage?
Yes, the M37272E8FP contains 32 KB of on-chip electrically programmable ROM (PROM) and 1152 bytes of RAM, including ROM correction memory. This eliminates the need for external program memory and supports in-system programming via dedicated PROM programming method documented in Renesas' datasheet section 15.
How does the M37272E8FP handle closed caption decoding without external components?
The M37272E8FP integrates a dedicated closed caption data slicer circuit that recovers EIA-608 CC waveforms directly from composite video input (CVIN pin). It performs slicing, clock recovery, and data extraction in hardware - requiring only passive RC filtering on CVIN, with no external decoder IC needed.
What video synchronization signals does the M37272E8FP accept for OSD alignment?
The M37272E8FP accepts HSYNC and VSYNC signals on pins P50 and P51 respectively to lock its OSD raster to the incoming video signal. This ensures pixel-accurate overlay positioning across NTSC and PAL formats, enabling stable character display without software-based timing compensation.
Is the M37272E8FP pin-compatible with other members of the M37272 family?
The M37272E8FP shares the same 42-pin SSOP package and pinout with M37272EFSP and M37272M8H-XXXFP variants. However, pin 14 is AVCC (not NC) on M37272E8FP - requiring proper analog power routing. Other variants like M37272M6H differ in ROM/RAM size but retain identical peripheral pin mapping.
M37272E8FP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- -
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- -
- Core Size:
- -
- Speed:
- -
- Connectivity:
- -
- Peripherals:
- -
- Number of I/O:
- -
- Program Memory Size:
- -
- Program Memory Type:
- -
- EEPROM Size:
- -
- RAM Size:
- -
- Voltage - Supply (Vcc/Vdd):
- -
- Data Converters:
- -
- Oscillator Type:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
M37272E8FP FAQ
1.How can I place an order for M37272E8FP through Aetrix?
Please submit a Request for Quotation (RFQ) for M37272E8FP 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 M37272E8FP reliable?
The price and inventory of M37272E8FP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M37272E8FP is usually 5 days.
3.What payment methods are accepted for M37272E8FP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M37272E8FP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M37272E8FP?
M37272E8FP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M37272E8FP 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 M37272E8FP?
For technical support, including M37272E8FP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M37272E8FP requirements.
6.How does Aetrix verify that M37272E8FP is sourced from the original manufacturer or authorized distributors?
All M37272E8FP 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 M37272E8FP meets industry standards.
7.What is the process for return or replacement of M37272E8FP?
All M37272E8FP units undergo pre-shipment inspection (PSI). If there is an issue with M37272E8FP, 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 M37272E8FP part is unused and in its original packaging.
Return procedure for M37272E8FP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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