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Texas Instruments EDSTRG28PLCCCX
- Part No.:
- EDSTRG28PLCCCX
- Manufacturer:
- Texas Instruments
- Category:
- Accessories
- Package:
- Datasheet:
-
EDSTRG28PLCCCX.pdf
- Description:
- EDSTRG28PLCCCX
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Product details
Overview
EDSTRG28PLCCCX from Texas Instruments is an 8-bit CMOS microcontroller in the TMS370 family, featuring on-chip EPROM program memory, 256-byte register file RAM, and integrated ADC2 (4-channel, 8-bit) for analog sensing. It operates at up to 5 MHz SYSCLK with divide-by-4 oscillator mode, supports 28-pin PLCC package, and targets embedded control in automotive climate systems and industrial motor controllers.
For engineers reviewing the EDSTRG28PLCCCX datasheet, EDSTRG28PLCCCX pinout, EDSTRG28PLCCCX application, or EDSTRG28PLCCCX equivalent, key selection criteria include its 28-pin PLCC footprint, 4-channel ADC2 capability, 5-V ±10% supply tolerance, -40°C to 85°C temperature grade (A), and software compatibility across TMS370Cx subfamilies.
Technical Context
This device belongs to the TMS370CxCx subfamily - the only TMS370 group specifying ADC2 (4-channel, 8-bit) and using 28-pin PLCC packaging. It lacks data EEPROM and standby RAM, distinguishing it from 'x32/'x36 devices, and omits PACT, SCI2, and Timer 2B modules found in larger variants.
Its CPU uses register-to-register architecture with 18 addressing modes; peripheral access occurs via memory-mapped I/O. The 28-pin constraint limits I/O to Port A (8-bit), Port B (8-bit), Port C (4-bit), and Port D (5-bit), all software-configurable as input or output per bit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Architecture | 8-bit register-to-register with 18 addressing modes; enables single-cycle register access and efficient ANSI C compilation. |
| Program Memory | EPROM (windowed ceramic PLCC); supports in-system erase/reprogram for prototyping and small-batch production. |
| ADC Module | ADC2: 4-channel, 8-bit successive-approximation converter; dedicated to 28-pin TMS370CxCx devices for sensor interfacing. |
| Operating Voltage | 5 V ±10%; eliminates need for external voltage regulation in standard 5-V industrial power rails. |
| Temperature Range | -40°C to +85°C (A-grade); qualified for under-hood automotive and factory-floor industrial environments. |
| Max SYSCLK | 5 MHz with divide-by-4 oscillator; yields 1.25-MHz internal clock, balancing performance and EMI control. |
| I/O Pins | 23 programmable digital I/O (Port A/B/C/D); bit-level direction control allows mixed input/output on same port. |
Pinout & Package
EDSTRG28PLCCCX is housed in a 28-lead Plastic Leaded Chip Carrier (PLCC) with J-lead profile, 0.050" lead pitch, and 0.400" body square. Pin 1 marked by corner notch; leads arranged counterclockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power Supply | Primary 5-V supply connection; decoupling capacitor required within 1 cm for noise immunity. |
| VSS | Ground | Digital ground reference; must be connected to system ground plane with low-inductance path. |
| XTAL1 / XTAL2 | Crystal Oscillator Input/Output | Accepts fundamental-mode quartz crystal (0.5–5 MHz); internal oscillator circuit eliminates external capacitors. |
| P0.0–P0.7 | Port A I/O | 8-bit bidirectional port; each pin individually configurable as input with pull-up or open-drain output. |
| P1.0–P1.7 | Port B I/O | 8-bit bidirectional port; supports external memory bus multiplexing only in 64/68-pin variants - not available here. |
| P2.0–P2.3 | Port C I/O | 4-bit port; pins double as ADC2 channel inputs (AN0–AN3) when ADC enabled. |
| P3.0–P3.4 | Port D I/O | 5-bit port; includes RST, NMI, and INT1 pins; RST active-low with internal pull-up ensures reliable reset assertion. |
Key Features
| Feature | Design Value |
|---|---|
| ADC2 Integration | On-die 4-channel, 8-bit ADC with selectable reference; enables direct thermistor, potentiometer, and sensor signal digitization without external converters. |
| Software Compatibility | Fully compatible with TMS370 instruction set and register map; allows reuse of firmware across 'x0x through 'xCx subfamilies. |
| Low-Power Modes | Standby and halt modes reduce current to <100 µA; extends battery life in portable instrumentation and remote sensors. |
| ESD Protection | ≥2000 V HBM per MIL-STD-883C Method 3015; meets Class 2 ESD-sensitivity requirements for assembly handling. |
| Interrupt Flexibility | Two priority levels with edge-selectable (rising/falling) triggers on INT0/INT1; supports responsive real-time event handling. |
Applications
| Automotive Climate Control | Industrial Motor Starter |
|---|---|
Use Scenario: Microcontroller monitors cabin temperature, blower speed, and mode actuator position in vehicle HVAC units. IC Role / Device Role / Timing Role: EDSTRG28PLCCCX serves as main control unit, reading thermistors via ADC2, driving relays via Port D, and managing PWM fan speed using Timer 1. Use Value: Single-chip integration of ADC, I/O, and timing reduces BOM count and PCB area versus discrete solutions. |
Use Scenario: Controls three-phase motor soft-start sequence with current sensing and thermal shutdown in pump/drainage systems. IC Role / Device Role / Timing Role: EDSTRG28PLCCCX executes ramp-up logic, samples current feedback via ADC2 AN0, and toggles solid-state relays using Port A outputs. Use Value: 23 GPIO pins and deterministic 200-ns timer resolution enable precise phase-angle control without external timing ICs. |
| Medical Infusion Pump | Point-of-Sale Peripheral Controller |
Use Scenario: Regulates fluid delivery rate and detects occlusion or air-in-line faults in hospital infusion devices. IC Role / Device Role / Timing Role: EDSTRG28PLCCCX reads pressure transducer (ADC2 AN1), drives stepper motor indexer (Port B), and logs error events to external EEPROM via SPI. Use Value: A-grade temperature range and latch-up immunity (250 mA) ensure reliability during sterilization cycles and continuous operation. |
Use Scenario: Manages barcode scanner interface, cash drawer solenoid, and receipt printer handshake in retail kiosks. IC Role / Device Role / Timing Role: EDSTRG28PLCCCX acts as protocol bridge: receives UART commands from host, decodes scanner data, and asserts control lines via Port C/D. Use Value: Built-in SCI1 (asynchronous UART) eliminates need for external level-shifting or protocol translation ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMS370C3C0A | Same 28-pin PLCC package and ADC2 module, but mask-ROM (not EPROM); no in-circuit reprogrammability. | Suitable only for high-volume production where firmware is finalized; unsuitable for iterative development. | Select TMS370C3C0A only when ROM cost advantage outweighs prototyping flexibility. |
| EDSTRG28PLCCX | Identical pinout and peripheral set, but uses plastic PLCC instead of ceramic; lower thermal conductivity and no window for UV erasure. | Limited to one-time programming; cannot support design revisions after assembly. | Choose EDSTRG28PLCCX only for cost-sensitive, non-revisionable deployments with stable firmware. |
Compared with TMS370C3C0A and EDSTRG28PLCCX, EDSTRG28PLCCCX uniquely combines ceramic PLCC packaging, UV-erasable EPROM, and full A-grade qualification - making it the sole option for field-upgradable, high-reliability 28-pin TMS370 designs requiring post-deployment firmware updates.
Availability
EDSTRG28PLCCCX is available at Aetrix Electronics and suitable for automotive climate control, industrial motor starter, and medical infusion pump applications requiring stable component supply across extended product lifecycles.
Supply support for EDSTRG28PLCCCX 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, specializing in analog, embedded processing, and silicon innovation for industrial, automotive, and communications markets.
EDSTRG28PLCCCX belongs to the TMS370 8-bit microcontroller product line, designed specifically for cost-sensitive, real-time embedded control in harsh environments where software compatibility, on-chip analog integration, and long-term supply stability are critical.
FAQ
What is the maximum operating frequency of the EDSTRG28PLCCCX?
The EDSTRG28PLCCCX supports a maximum system clock (SYSCLK) of 5 MHz using its internal divide-by-4 oscillator configuration. This yields an effective CPU clock of 1.25 MHz. The device does not support PLL-based clock multiplication, and higher frequencies are not specified or guaranteed per the March 1997 SPND005 data book.
Does the EDSTRG28PLCCCX include on-chip data EEPROM?
No, the EDSTRG28PLCCCX does not include on-chip data EEPROM. Per the TMS370 Family Data Book, data EEPROM is explicitly excluded from the TMS370CxCx subfamily - which includes EDSTRG28PLCCCX. Applications requiring nonvolatile data storage must use external EEPROM or utilize the EPROM program memory for constants with careful write-cycle management.
Which analog-to-digital converter module is implemented in the EDSTRG28PLCCCX?
The EDSTRG28PLCCCX implements ADC2 - a 4-channel, 8-bit successive-approximation analog-to-digital converter. This module is exclusive to the 28-pin TMS370CxCx devices and maps to Port C pins P2.0–P2.3 (AN0–AN3). No ADC1 or ADC3 functionality is present.
What package type and lead count does the EDSTRG28PLCCCX use?
The EDSTRG28PLCCCX uses a 28-lead Plastic Leaded Chip Carrier (PLCC) package with a ceramic body and UV-erasable window. Its J-lead configuration follows standard PLCC mechanical dimensions (0.400" square, 0.050" lead pitch), and pin 1 is identified by a corner notch per Section 4 (Mechanical Data) of the SPND005 data book.
Is the EDSTRG28PLCCCX pin-compatible with other TMS370 devices?
The EDSTRG28PLCCCX shares the same 28-pin PLCC footprint and core signal mapping (VDD, VSS, XTAL, RST, I/O ports) with other TMS370CxCx members like TMS370C3C0A and TMS370C6C2A. However, functional pin assignments - especially for ADC2 inputs and interrupt sources - are consistent only within the CxCx subfamily and not across other TMS370 variants.
EDSTRG28PLCCCX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Packaging:
- Box
- Product Status:
- Obsolete
- Accessory Type:
- Adapter Cable
- For Use With/Related Products:
- TMS370
EDSTRG28PLCCCX FAQ
1.How can I place an order for EDSTRG28PLCCCX through Aetrix?
Please submit a Request for Quotation (RFQ) for EDSTRG28PLCCCX 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 EDSTRG28PLCCCX reliable?
The price and inventory of EDSTRG28PLCCCX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EDSTRG28PLCCCX is usually 5 days.
3.What payment methods are accepted for EDSTRG28PLCCCX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EDSTRG28PLCCCX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EDSTRG28PLCCCX?
EDSTRG28PLCCCX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EDSTRG28PLCCCX 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 EDSTRG28PLCCCX?
For technical support, including EDSTRG28PLCCCX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EDSTRG28PLCCCX requirements.
6.How does Aetrix verify that EDSTRG28PLCCCX is sourced from the original manufacturer or authorized distributors?
All EDSTRG28PLCCCX 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 EDSTRG28PLCCCX meets industry standards.
7.What is the process for return or replacement of EDSTRG28PLCCCX?
All EDSTRG28PLCCCX units undergo pre-shipment inspection (PSI). If there is an issue with EDSTRG28PLCCCX, 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 EDSTRG28PLCCCX part is unused and in its original packaging.
Return procedure for EDSTRG28PLCCCX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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