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Texas Instruments TMS370C792N2T
- Part No.:
- TMS370C792N2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
TMS370C792N2T.pdf
- Description:
- 8-BIT, OTPROM, 5MHZ PDIP40
- Quantity:
- Payment:
- Shipping:
Inventory:222
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Product details
Overview
TMS370C792N2T from Texas Instruments is a one-time-programmable (OTP) 8-bit microcontroller with 8K-byte EPROM program memory, 256-byte data EEPROM, 128-byte RAM, and integrated 15-channel 8-bit ADC3 - designed for automotive and industrial motor control applications requiring robust in-circuit programmability and low-power operation.
For engineers reviewing the TMS370C792N2T datasheet, TMS370C792N2T pinout, TMS370C792N2T application, or TMS370C792N2T equivalent, this page delivers verified technical context, package-specific pin functions, real-world use cases, and validated alternative options for production design-in and legacy system replacement.
Technical Context
The TMS370C792N2T implements a register-to-register 8-bit CPU architecture with 14 addressing modes and no accumulator bottleneck, enabling direct arithmetic between any two of 128 general-purpose registers. It supports dual clock options: divide-by-4 (0.5–5 MHz SYSCLK) or PLL-based divide-by-1 (2–5 MHz SYSCLK), with VCC = 5 V ±10%.
Its peripheral set includes a 24-bit watchdog timer (standard mode), a 16-bit general-purpose timer with 8-bit prescaler (configurable as event counter, pulse accumulator, input capture, or PWM), and an analog subsystem with dedicated VCC3/VSS3 supply rails for ADC3 - all memory-mapped via a unified 16-bit address space spanning EPROM (6000h–7FFFh), RAM (0000h–007Fh), and peripheral file (1000h–107Fh).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 8-bit register-to-register CPU with 14 addressing modes; eliminates accumulator bottleneck for efficient ALU operations. |
| Program Memory | 8K-byte OTP EPROM (6000h–7FFFh); enables low-volume production without mask cost or cycle delay. |
| Data Memory | 256-byte data EEPROM (1F00h–1FFFh); supports in-circuit reprogramming with internal charge pump - no external VPP required. |
| ADC | 15-channel 8-bit ADC3 with dedicated analog supply (VCC3/VSS3); channels AN0–AN14 support flexible analog input or reference configuration. |
| Timer System | 16-bit Timer1 + 8-bit prescaler → 24-bit real-time capability; software-configurable as PWM, input capture, or pulse accumulator. |
| Power Management | STANDBY (oscillator & timer active) and HALT (full stop) low-power modes; retains RAM and peripheral state across both. |
| Supply Voltage | 5 V ±10% digital supply (VCC); separate 5 V analog rail (VCC3/VSS3) for ADC3 noise isolation. |
Pinout & Package
Package: 40-pin plastic shrink dual-in-line (PSDIP), N2 suffix per TI documentation (identical to NJ mechanical drawing). Pin count and layout match standard 40-pin DIP footprint with 0.3-inch width.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A7 | Port A bidirectional I/O | General-purpose digital I/O; software-configurable per pin; no alternate peripheral functions assigned. |
| D3–D7 | Port D bidirectional I/O | D3 doubles as SYSCLK output; all pins support TTL/CMOS logic levels and configurable pull-up/down. |
| AN0–AN14 | ADC3 analog inputs | 15 dedicated analog input pins; AN6/AN7 configurable as positive reference inputs; require VCC3/VSS3 decoupling. |
| T1IC/CR, T1PWM, T1EVT | Timer1 multifunction pins | Shared with general-purpose I/O; T1IC/CR = input capture/reset, T1PWM = PWM output, T1EVT = external event trigger. |
| RESET | System reset I/O | Bidirectional: input initiates cold start; open-drain output asserts low on watchdog or oscillator fault detection. |
| MC | Mode control | Enables EEPROM write-protection override (WPO) when 12 V applied; also supplies VPP for EPROM programming. |
| XTAL1 / XTAL2/CLKIN | Oscillator interface | XTAL1 = crystal oscillator output; XTAL2/CLKIN = crystal input or external clock source (0.5–5 MHz). |
| VCC / VSS | Digital power rails | VCC = 5 V ±10% main supply; VSS = digital ground; decoupling required within 1 cm of pins. |
| VCC3 / VSS3 | Analog power rails | Dedicated 5 V analog supply and ground for ADC3; must be isolated from digital VCC/VSS to maintain 8-bit SNR. |
| INT1 | External interrupt input | Nonmaskable or maskable level-sensitive interrupt source; supports edge-triggered wake-up from STANDBY/HALT. |
Key Features
| Feature | Design Value |
|---|---|
| OTP EPROM Program Memory | 8K-byte one-time-programmable EPROM replaces 4K ROM in pin-compatible TMS370Cx9x family - ideal for low-volume production or rapid prototyping updates. |
| ADC3 with Dedicated Analog Rails | 15-channel 8-bit ADC with independent VCC3/VSS3 supply ensures >48 dB SNR in noisy industrial environments without analog/digital crosstalk. |
| Configurable Low-Power Modes | STANDBY mode maintains oscillator and timer operation while halting CPU - enables real-time wake-up from external events with sub-10 µs latency. |
| Memory-Mapped Peripheral File | 256-byte peripheral file (1000h–10FFh) provides unified access to all modules (timer, ADC, EEPROM control) using standard load/store instructions. |
| On-Chip Watchdog Timer | 24-bit watchdog with standard timeout behavior; reset assertion on overflow or invalid key write - prevents runaway code in safety-critical motor control loops. |
Applications
| Automotive Body Control Module | Industrial Motor Drive Interface |
|---|---|
|
Use Scenario: Centralized control of door locks, window lifts, and mirror adjustment in 12 V vehicle systems. IC Role / Device Role / Timing Role: Main system controller executing sensor polling, actuator sequencing, and LIN bus communication. Use Value: Integrated 15-channel ADC directly monitors potentiometer positions and current-sense resistors; OTP EPROM allows field-updatable firmware without mask re-spin. |
Use Scenario: Closed-loop speed and position control of BLDC motors in HVAC blowers and conveyor drives. IC Role / Device Role / Timing Role: Real-time PWM generator and feedback processor interfacing with Hall-effect sensors and gate drivers. Use Value: Timer1's hardware PWM output drives 3-phase inverter with <1% duty-cycle jitter; STANDBY mode enables fast wake-on-fault response. |
| Consumer Appliance Control Board | Telecom Power Supply Monitor |
|
Use Scenario: Embedded control of washing machine drum motion, water heating, and user interface. IC Role / Device Role / Timing Role: Primary MCU managing relay timing, temperature sensing, and display multiplexing. Use Value: 256-byte data EEPROM stores calibration offsets and usage counters across power cycles; VCC3/VSS3 isolation preserves ADC accuracy amid relay switching noise. |
Use Scenario: Monitoring DC output voltage, fan RPM, and thermal shutdown status in telecom rectifier modules. IC Role / Device Role / Timing Role: Standalone supervisory controller with watchdog and analog monitoring. Use Value: Hardware watchdog resets system on firmware hang; 8-bit ADC measures 0–5 V sense lines with 20 mV resolution at 10 kHz sampling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMS370C090AN2T | 4K-byte mask-ROM program memory; lacks OTP capability; identical pinout and peripheral set. | Suitable only for high-volume production where mask cost is justified; no field firmware updates possible. | Select when firmware is fully stable and volume exceeds 50k units/year; avoid for prototyping or revision-sensitive designs. |
| SE370C792FZ | Windowed ceramic CLCC-44 package; reprogrammable EPROM; same 8K-byte program memory and peripherals. | Used exclusively in development/prototyping; UV-erasable for iterative firmware testing on breadboards. | Choose for early-stage design validation; not qualified for production due to package reliability and screening limitations. |
Compared with TMS370C090AN2T, the TMS370C792N2T enables firmware iteration without hardware change; compared with SE370C792FZ, it offers industrial-grade plastic packaging and OTP security for production deployment.
Availability
TMS370C792N2T is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor control, and consumer appliance applications requiring stable component supply, long-term lifecycle support, and legacy design continuity.
Supply support for TMS370C792N2T 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 leader founded in 1930, delivering analog, embedded processing, and connectivity solutions across automotive, industrial, and communications markets.
The TMS370Cx9x product line was engineered for cost-effective real-time control in harsh environments - integrating OTP EPROM, dedicated analog rails, and low-power modes specifically for automotive electronics and industrial motor control.
FAQ
What is the memory configuration of the TMS370C792N2T?
The TMS370C792N2T features 8K bytes of one-time-programmable EPROM program memory (6000h–7FFFh), 256 bytes of data EEPROM (1F00h–1FFFh), and 128 bytes of static RAM (0000h–007Fh). Unlike ROM variants, the TMS370C792N2T does not include mask-ROM - its full 8K EPROM replaces the 4K ROM found in TMS370C090A devices.
Does the TMS370C792N2T support in-circuit programming of its EPROM?
Yes, the TMS370C792N2T supports in-circuit EPROM programming via the MC pin, which accepts 13 V to enable VPP. Programming is controlled by the EPCTL register (P01Ch) in the peripheral file. No device removal is required, making it suitable for factory programming and limited-field updates.
What are the low-power modes supported by the TMS370C792N2T?
The TMS370C792N2T supports two hardware-enforced low-power modes: STANDBY (CPU halted, oscillator and Timer1 active) and HALT (all clocks stopped). Both retain RAM contents and peripheral register states. Wake-up is possible via INT1 or Timer1 event in STANDBY; only external RESET wakes from HALT.
How is the ADC3 subsystem powered and isolated on the TMS370C792N2T?
The ADC3 subsystem uses dedicated power rails VCC3 and VSS3, physically separate from digital VCC/VSS. This isolation minimizes digital switching noise coupling into analog measurements. The TMS370C792N2T requires separate 5 V analog regulation and local 0.1 µF + 10 µF decoupling on VCC3/VSS3 pins.
Is the TMS370C792N2T pin-compatible with other TMS370Cx9x devices?
Yes, the TMS370C792N2T shares identical 40-pin PSDIP (N2/NJ) pinout and electrical characteristics with TMS370C090AN2T and SE370C792JC. All devices use the same peripheral file map, register definitions, and instruction set - enabling drop-in replacement where OTP functionality is acceptable.
TMS370C792N2T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- -
- Series:
- TMS370
- 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:
TMS370C792N2T FAQ
1.How can I place an order for TMS370C792N2T through Aetrix?
Please submit a Request for Quotation (RFQ) for TMS370C792N2T 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 TMS370C792N2T reliable?
The price and inventory of TMS370C792N2T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMS370C792N2T is usually 5 days.
3.What payment methods are accepted for TMS370C792N2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMS370C792N2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMS370C792N2T?
TMS370C792N2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMS370C792N2T 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 TMS370C792N2T?
For technical support, including TMS370C792N2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMS370C792N2T requirements.
6.How does Aetrix verify that TMS370C792N2T is sourced from the original manufacturer or authorized distributors?
All TMS370C792N2T 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 TMS370C792N2T meets industry standards.
7.What is the process for return or replacement of TMS370C792N2T?
All TMS370C792N2T units undergo pre-shipment inspection (PSI). If there is an issue with TMS370C792N2T, 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 TMS370C792N2T part is unused and in its original packaging.
Return procedure for TMS370C792N2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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