STMicroelectronics ST62T62CM6

Overview

ST62T62CM6 from STMicroelectronics is an 8-bit HCMOS microcontroller with integrated 8-bit A/D converter (4 analog inputs), 64 bytes of data EEPROM, 128 bytes of RAM, auto-reload timer, digital watchdog, and safe reset circuitry - designed for embedded control in automotive body electronics, appliance motor control, and industrial sensor interfaces operating from 3.0–6.0 V at -40 to +125°C.

For engineers reviewing the ST62T62CM6 datasheet, ST62T62CM6 pinout, ST62T62CM6 application, or ST62T62CM6 equivalent, this device supports direct LED/TRIAC drive (5 I/O lines sinking up to 30 mA), programmable power-saving modes (Run/Wait/Stop), and on-chip oscillator compatibility with quartz, ceramic resonator, or RC network - critical for cost-sensitive, thermally demanding control designs.

Technical Context

The ST62T62CM6 implements a fixed-function 8-bit CPU core with 6-level hardware stack, supporting immediate, direct, indirect, and indexed addressing modes. Its memory architecture separates 1836-byte OTP program space, 128-byte RAM, and paged 64-byte EEPROM accessed via DRBR/EECTL registers.

Peripherals include two independent 8-bit timers: one general-purpose counter with 7-bit prescaler, and one auto-reload timer (ARTimer) with dedicated PB6/PB7 pins for input capture and output compare. The 4-channel ADC operates with internal reference and supports conversion trigger via timer or software.

Key Specifications

Pinout & Package

ST62T62CM6 is housed in a 16-pin plastic dual in-line package (PDIP16) with 0.3-inch width, compliant with JEDEC MS-001. Pin functions are validated per STMicroelectronics datasheet Rev. 4 (March 2009), Figure 2 and Section 1.2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ST62T62CM6, ST62T52CM6 removes EEPROM but retains full peripheral functionality for simpler control tasks, while ST62E62CM6 trades OTP permanence for field-reprogrammability - enabling iterative firmware testing without new silicon spins.

Availability

ST62T62CM6 is available at Aetrix Electronics and suitable for automotive body electronics, appliance motor control, and industrial sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ST62T62CM6 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power devices, and analog ICs for industrial, automotive, and consumer markets.

The ST62xx family targets cost-sensitive, medium-complexity embedded control applications - emphasizing integration of essential peripherals (ADC, EEPROM, timers) in minimal pin count packages for rapid system implementation.

FAQ

What is the maximum clock frequency supported by ST62T62CM6?

The ST62T62CM6 supports a maximum clock frequency of 8 MHz, achievable using an external quartz crystal, ceramic resonator, or RC network connected to the OSCin/OSCout pins. This frequency defines the instruction execution rate and timing resolution for all on-chip peripherals including the ADC, timers, and I/O toggling.

How is the 64-byte EEPROM accessed in ST62T62CM6?

The 64-byte EEPROM is paged into data space via the Data RAM Bank Register (DRBR) at address E8h. When DRBR bit 0 is set, EEPROM page 0 becomes active and is accessed using standard MOV instructions to addresses 00h–3Fh. Write operations require prior clearing of E2OFF bit in the EEPROM Control Register (EECTL).

Can ST62T62CM6 drive LEDs directly without external components?

Yes - five I/O pins (PB0, PB2–PB3, PB6–PB7) are rated to sink up to 30 mA each, enabling direct connection of standard LEDs with only a series current-limiting resistor. This eliminates external transistor drivers in low-power indicator and status applications.

What reset sources are available on ST62T62CM6?

The ST62T62CM6 provides multiple reset sources: external active-low RESET pin, Power-on Reset (user-configurable delay), Low Voltage Detector (LVD) reset below threshold, and digital watchdog timeout. All reset sources converge to a common reset vector, ensuring deterministic restart regardless of cause.