Texas Instruments TMS370C758ANMT

Overview

TMS370C758ANMT from Texas Instruments is an 8-bit OTP EPROM microcontroller with 32 KB on-chip program memory, 1 KB RAM, 256-byte data EEPROM, and integrated peripherals including dual 16-bit timers, 8-channel 8-bit ADC, SCI1 serial interface, SPI, and a 24-bit watchdog timer - used in automotive engine control units and industrial motor controllers.

For engineers reviewing the TMS370C758ANMT datasheet, TMS370C758ANMT pinout, TMS370C758ANMT application, or TMS370C758ANMT equivalent, key selection considerations include its 68-pin PLCC package, divide-by-1 PLL clock option (up to 5 MHz SYSCLK), STANDBY/HALT low-power modes, and software-configurable I/O ports supporting microcomputer or microprocessor operating modes.

Technical Context

The TMS370C758ANMT implements a register-to-register architecture enabling direct arithmetic/logical operations without accumulator dependency. It supports two distinct operating modes - microcomputer (single-chip or external expansion) and microprocessor (with or without internal program memory) - selected via the MC pin and configured through system control registers.

Its external bus features non-multiplexed 16-bit address and 8-bit data lines, precoded chip-select outputs (CSE1/CSE2/CSH1–CSH3/CSPF), and WAIT-state support for timing flexibility with slow peripherals. All peripheral function pins are software configurable as general-purpose digital I/O in microcomputer mode.

Key Specifications

Pinout & Package

Package: 68-pin plastic leaded chip carrier (PLCC), FN package code, surface-mount compatible with standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit microcontroller applications.

Compared with TMS370C758AMT, the TMS370C758ANMT offers higher I/O density and better thermal performance in PLCC packaging, while SE370C758A provides field-reprogrammability at the expense of production-grade ruggedness and cost.

Availability

TMS370C758ANMT is available at Aetrix Electronics and suitable for automotive engine control, industrial motor drive, and telecom power supply monitoring requiring stable component supply across extended product lifecycles.

Supply support for TMS370C758ANMT 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 power management technologies with broad industrial and automotive qualification.

The TMS370Cx5x family was designed for cost-effective real-time control in harsh environments - integrating memory, analog, and communication peripherals into a single CMOS device for automotive, industrial, and telecom applications.

FAQ

What is the maximum SYSCLK frequency supported by the TMS370C758ANMT?

The TMS370C758ANMT supports a maximum SYSCLK frequency of 5 MHz when using the divide-by-1 PLL clock option. This is achieved by applying a 5 MHz external clock to XTAL2/CLKIN or using a 5 MHz crystal with XTAL1/XTAL2. The device does not support frequencies above 5 MHz in either divide-by-1 or divide-by-4 modes per the SPNS010F datasheet revision February 1997.

Does the TMS370C758ANMT include on-chip EEPROM for data storage?

Yes, the TMS370C758ANMT includes 256 bytes of on-chip data EEPROM. This nonvolatile memory retains calibration values, fault logs, and user settings across power cycles without requiring external backup circuitry. It is electrically erasable and programmable during normal operation, with endurance rated for 10,000 write/erase cycles per the TMS370Cx5x family specification.

How many analog input channels does the TMS370C758ANMT ADC support?

The TMS370C758ANMT integrates an eight-channel 8-bit analog-to-digital converter (ADC1) with inputs AN0 through AN7. Each channel accepts single-ended analog signals referenced to VSS3 and VCC3, supporting direct connection to potentiometers, thermistors, and other analog sensors without external signal conditioning.

What operating modes does the TMS370C758ANMT support, and how are they selected?

The TMS370C758ANMT supports four operating modes: microcomputer single-chip, microcomputer with external expansion, microprocessor without internal program memory, and microprocessor with internal program memory. Mode selection is determined by the voltage level on the MC pin two cycles before RESET deassertion, followed by software configuration of system control registers to define memory mapping and bus behavior.

Is the TMS370C758ANMT pin-compatible with other devices in the TMS370Cx5x family?

The TMS370C758ANMT is pin-compatible with other 68-pin PLCC variants in the TMS370Cx5x family, including TMS370C058A, TMS370C358A, and SE370C758A. All share identical pinout, electrical characteristics, and package dimensions (FN package), enabling drop-in replacement where memory configuration and temperature grade align with system requirements.