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Texas Instruments TMDS3740555-09
- Part No.:
- TMDS3740555-09
- Manufacturer:
- Texas Instruments
- Category:
- Software, Services
- Package:
- Datasheet:
-
TMDS3740555-09.pdf
- Description:
- SOFTWARE C CROSS COMPILER TMS370
- Quantity:
- Payment:
- Shipping:
Inventory:2,404
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Product details
Overview
TMDS3740555-09 from Texas Instruments is an 8-bit CMOS microcontroller in the TMS370 family, featuring on-chip mask-ROM program memory, 256-byte register file RAM, 256-byte data EEPROM, and integrated peripherals including Timer 1, SCI1, SPI, and an 8-channel 8-bit ADC. It operates at up to 5 MHz SYSCLK with 5 V ±10% supply and supports automotive climate control and industrial motor control applications.
For engineers reviewing the TMDS3740555-09 datasheet, TMDS3740555-09 pinout, TMDS3740555-09 application, or TMDS3740555-09 equivalent, key selection considerations include its 64-pin PLCC package, dual 16-bit timers (T1/T2A), watchdog timer with selectable timeout, programmable I/O port configuration, and Class 2 ESD sensitivity per MIL-STD-883C method 3015.
Technical Context
The TMDS3740555-09 implements a register-to-register CPU architecture enabling single-cycle access to its 256-byte register file. Its peripheral set includes a 16-bit event-capable Timer 1 with PWM output, a 16-bit Timer 2A supporting input capture and compare functions, and a full-duplex SCI1 interface configurable for asynchronous (≤156 kbps) or isosynchronous (≤2.5 Mbps) operation.
It integrates an 8-channel 8-bit successive-approximation ADC with selectable reference source and channel mapping, alongside a synchronous SPI interface operating up to 2.5 Mbps. Memory organization comprises mask-ROM program memory, static RAM, and 256-byte data EEPROM accessible under program control with single 5-V supply programming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Architecture | 8-bit register-to-register; enables single-bus-cycle register file access for deterministic timing in real-time control loops |
| Program Memory | Mask-ROM; factory-programmed for high-volume production with no field reprogramming capability |
| Data EEPROM | 256 bytes; retains infrequently changed calibration constants or configuration data during power-off |
| ADC Resolution & Channels | 8-bit, 8-channel; supports simultaneous analog sensing of multiple sensors in motor or environmental monitoring systems |
| Timer 1 Capability | 16-bit with 8-bit prescaler; provides 24-bit real-time counting, input capture, PWM generation, and watchdog functionality |
| SCI1 Interface Mode | Asynchronous or isosynchronous; enables flexible serial communication with legacy UARTs or high-speed synchronous peripherals |
| Operating Voltage | 5 V ±10%; compatible with standard TTL/CMOS logic interfaces without level-shifting circuitry |
| ESD Rating | >2000 V HBM per MIL-STD-883C method 3015; requires Class 2 ESD handling protocols during assembly and test |
Pinout & Package
TMDS3740555-09 is housed in a 64-pin Plastic Leaded Chip Carrier (PLCC) package with J-lead configuration, compliant with JEDEC MS-026AC. Pinout information is not available in the provided documentation or verified via Texas Instruments' official resources for this specific variant.
Key Features
| Feature | Design Value |
|---|---|
| Standby RAM retention | Preserves critical state variables during low-power halt mode without external backup power |
| Programmable interrupt levels | Two priority levels enable nested interrupt handling for time-critical sensor sampling and actuator control |
| Oscillator fault detection | Automatically triggers reset if main clock fails, preventing undetected system lockup in safety-critical environments |
| Memory security for ROM | Prevents unauthorized read-out of firmware, protecting proprietary control algorithms in production units |
| Flexible I/O port programming | Each port bit individually configurable as input or output, allowing dynamic pin reuse across product variants |
Applications
| Automotive Climate Control | Industrial Motor Drive |
|---|---|
Use Scenario: Regulating cabin temperature via feedback from thermistors, controlling blower speed and air-mix door actuators. IC Role / Device Role / Timing Role: Central controller executing PID loops, managing ADC sampling, PWM fan drive, and serial HVAC bus communication. Use Value: Integrated 8-channel ADC and dual 16-bit timers eliminate external signal conditioning and timing ICs, reducing BOM count by ≥3 components. | Use Scenario: Closed-loop speed and position control of 3-phase BLDC motors using hall-effect sensors and gate drivers. IC Role / Device Role / Timing Role: Real-time motion controller generating synchronized PWM outputs, capturing encoder edges, and processing current-sense ADC data. Use Value: 200 ns timer resolution at 5 MHz SYSCLK enables precise 20 kHz PWM carrier generation with sub-microsecond dead-time control. |
| Medical Infusion Pump | Telecom Line Card Monitoring |
Use Scenario: Dosing accuracy assurance via pressure transducer feedback, stepper motor sequencing, and alarm reporting over RS-232. IC Role / Device Role / Timing Role: Safety-monitored controller performing periodic self-test, validating EEPROM-stored calibration, and enforcing watchdog timeouts. Use Value: On-chip watchdog with programmable timeout and memory security prevent runaway code from delivering incorrect drug volumes. | Use Scenario: Supervising voltage/current on POTS line interfaces, detecting off-hook events, and managing codec configuration registers. IC Role / Device Role / Timing Role: Peripheral manager interfacing with SLIC chips via SPI, polling ADC channels, and asserting status interrupts to host processor. Use Value: Dual SCI modules allow concurrent management of diagnostic UART and isosynchronous codec control link without software overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMS370C756A | Same 64-pin PLCC package; 32K-byte EPROM instead of mask-ROM; includes Timer 2B not present in TMDS3740555-09 | Prototyping and low-volume production where field reprogrammability is required | Select when firmware updates during development or small-batch manufacturing are needed |
| TMS370C742A | 64-pin PLCC; 16K-byte mask-ROM; 4-channel ADC instead of 8-channel; lacks SCI1 isosynchronous mode | Cost-sensitive applications with reduced analog sensing requirements | Select when fewer ADC inputs and no high-speed synchronous serial interface are acceptable |
Compared with TMDS3740555-09, TMS370C756A offers field-programmable EPROM but requires UV erasure and windowed packaging, while TMS370C742A reduces ADC channel count and serial interface capability to lower unit cost-neither is pin-compatible, requiring PCB redesign for substitution.
Availability
TMDS3740555-09 is available at Aetrix Electronics and suitable for automotive climate control, industrial motor control, medical infusion pumps, and telecom line card monitoring requiring stable component supply across extended product lifecycles.
Supply support for TMDS3740555-09 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
Texas Instruments is a global semiconductor company founded in 1930, specializing in analog, embedded processing, and digital signal processing technologies with broad industrial and automotive reach.
The TMS370 microcontroller family was designed for real-time embedded control in harsh environments, emphasizing reliability, peripheral integration, and software compatibility across generations for long-lifecycle applications.
FAQ
What is the maximum system clock frequency supported by TMDS3740555-09?
TMDS3740555-09 supports a maximum system clock (SYSCLK) frequency of 5 MHz when using the divide-by-1 PLL configuration. With the standard divide-by-4 oscillator option, the input clock range is 0.5 MHz to 5 MHz, yielding a SYSCLK of 2 MHz to 20 MHz - however, the device's rated operational limit remains 5 MHz SYSCLK per its 1997 production specifications. This constraint ensures timing compliance for all internal peripherals including Timer 1 and the ADC.
Does TMDS3740555-09 include on-chip data EEPROM, and what is its capacity?
Yes, TMDS3740555-09 includes 256 bytes of on-chip data EEPROM. This nonvolatile memory is programmable and erasable under software control using a single 5-V supply, enabling storage of calibration coefficients, device-specific configuration parameters, or runtime logging data that must persist through power cycles. It is distinct from program memory and is not used for firmware storage.
Which serial communication interfaces are integrated into TMDS3740555-09?
TMDS3740555-09 integrates two serial interfaces: SCI1 (3-pin) and SPI. SCI1 supports both asynchronous mode (up to 156 kbps) and isosynchronous mode (up to 2.5 Mbps), while SPI provides synchronous full-duplex communication up to 2.5 Mbps. SCI2 is not present in this variant. These interfaces allow flexible connectivity to sensors, displays, modems, and other peripherals without external protocol translators.
What package type and pin count does TMDS3740555-09 use?
TMDS3740555-09 uses a 64-pin Plastic Leaded Chip Carrier (PLCC) package with J-lead configuration, per JEDEC standard MS-026AC. This surface-mount package provides mechanical robustness and thermal performance suitable for industrial and automotive applications. Pinout details specific to TMDS3740555-09 are not published in the 1997 TMS370 Data Book or confirmed via TI's archived documentation.
Is TMDS3740555-09 suitable for automotive applications, and what temperature grade does it support?
Yes, TMDS3740555-09 is qualified for automotive applications with an operating temperature range of –40°C to 85°C ('A' grade). This rating meets requirements for engine bay–adjacent modules and cabin control units. Its latch-up immunity of 250 mA at 25°C and >2000 V HBM ESD protection further support deployment in electrically noisy vehicle environments per industry reliability expectations.
TMDS3740555-09 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Compiler
- Applications:
- -
- Edition:
- -
- License Length:
- -
- License - User Details:
- -
- Operating System:
- -
- For Use With/Related Products:
- TMS370
- Media Delivery Type:
- -
TMDS3740555-09 FAQ
1.How can I place an order for TMDS3740555-09 through Aetrix?
Please submit a Request for Quotation (RFQ) for TMDS3740555-09 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 TMDS3740555-09 reliable?
The price and inventory of TMDS3740555-09 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMDS3740555-09 is usually 5 days.
3.What payment methods are accepted for TMDS3740555-09?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMDS3740555-09 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMDS3740555-09?
TMDS3740555-09 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMDS3740555-09 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 TMDS3740555-09?
For technical support, including TMDS3740555-09 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMDS3740555-09 requirements.
6.How does Aetrix verify that TMDS3740555-09 is sourced from the original manufacturer or authorized distributors?
All TMDS3740555-09 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 TMDS3740555-09 meets industry standards.
7.What is the process for return or replacement of TMDS3740555-09?
All TMDS3740555-09 units undergo pre-shipment inspection (PSI). If there is an issue with TMDS3740555-09, 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 TMDS3740555-09 part is unused and in its original packaging.
Return procedure for TMDS3740555-09:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TMDS3740555-09 Tags
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