Microchip Technology PIC12HV615T-I/SN

Overview

PIC12HV615T-I/SN from Microchip Technology is an 8-pin, flash-based 8-bit CMOS microcontroller with integrated shunt voltage regulator, 10-bit ADC (4 channels), enhanced CCP PWM module, and analog comparator. It operates from 2.0V to user-defined maximum voltage (shunt-regulated up to 5V), delivers 20 MHz max clock speed, and supports in-circuit serial programming via two pins. It targets cost-sensitive, space-constrained embedded control applications requiring regulated internal supply and mixed-signal capability.

For engineers reviewing the PIC12HV615T-I/SN datasheet, PIC12HV615T-I/SN pinout, PIC12HV615T-I/SN application, or PIC12HV615T-I/SN equivalent, key selection criteria include its integrated 5V shunt regulator, 10-bit 4-channel ADC, dual-output PWM with dead-time control, comparator with programmable hysteresis, and operation across industrial temperature range (–40°C to +85°C) in SOIC-8 package.

Technical Context

The PIC12HV615T-I/SN implements a RISC CPU with 35 instructions, 8-level hardware stack, and three oscillator options: precision internal (±1% factory-calibrated at 4/8 MHz), external crystal/resonator, or RC network. Its peripheral set centers on signal conditioning and timing control: a single analog comparator with software-selectable hysteresis and CVREF, a 10-bit ADC sampling four analog inputs (AN0–AN3), and an Enhanced Capture/Compare/PWM (ECCP) module supporting 10-bit resolution, dual outputs (P1A/P1B), programmable dead time, and auto-shutdown.

Power management includes Sleep mode (50 nA standby current @ 2.0V), Brown-out Reset (BOR), Power-on Reset (POR), and Watchdog Timer (WDT) with independent oscillator. The shunt voltage regulator enables direct connection to higher-voltage rails (e.g., 12V or 24V systems), regulating down to 5V at 4–50 mA, eliminating need for external LDO in many sensor or actuator interface designs.

Key Specifications

Pinout & Package

Package: SOIC-8 (Small Outline Integrated Circuit, 150 mil width). Pinout conforms to standard 8-pin PDIP/SOIC/MSOP/DFN layout per Microchip DS41302D, Table 1-2.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-pin mixed-signal microcontroller applications.

Compared with PIC12F615-I/SN, PIC12HV615T-I/SN adds shunt regulation for direct high-voltage operation but shares identical ADC, PWM, and comparator capabilities; versus PIC12HV609-I/SN, it adds full 10-bit 4-channel ADC and ECCP - making it the only option among the three supporting both regulated high-side supply and closed-loop analog control.

Availability

PIC12HV615T-I/SN is available at Aetrix Electronics and suitable for motor control interface, battery monitoring system, industrial sensor node, and LED driver with dimming feedback requiring stable component supply and long-term industrial-grade availability.

Supply support for PIC12HV615T-I/SN 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

Microchip Technology Inc. is a leading provider of microcontrollers, analog components, and Flash-IP solutions, headquartered in Chandler, Arizona, with ISO/TS-16949:2002 certified design and wafer fabrication facilities.

The PIC12HV615T-I/SN belongs to Microchip's low-pin-count HV (High-Voltage) microcontroller family, designed specifically for cost-sensitive, space-constrained embedded systems that require direct interface to unregulated DC supplies and integrated analog signal conditioning.

FAQ

What is the maximum input voltage allowed on VDD for PIC12HV615T-I/SN?

The PIC12HV615T-I/SN does not accept arbitrary high voltage on VDD. Its internal shunt regulator maintains VDD at 5 V; therefore, the absolute maximum voltage applied to VDD must not exceed 5.5 V. Higher input voltages (e.g., 12 V or 24 V) are connected to the shunt regulator's input terminal (typically tied to VDD through a series resistor), not directly to the VDD pin. The shunt then sinks excess current to hold VDD at 5 V - so the actual "input" is the shunt node, not VDD itself. Always refer to Figure 13-1 and Section 13.0 of DS41302D for proper shunt regulator implementation.

Does PIC12HV615T-I/SN support self-read/write of program memory?

No, PIC12HV615T-I/SN does not support self-read/write of program memory. This feature is explicitly documented as available only on the PIC12F617 variant (see DS41302D, page 3). The PIC12HV615T-I/SN shares the same 1024-word Flash memory size and 64-byte RAM as PIC12F615, but lacks the PMCON1/PMCON2 registers and associated firmware routines required for runtime Flash modification. Firmware updates must be performed externally via ICSP using a programmer.

Can PIC12HV615T-I/SN generate complementary PWM signals with adjustable dead time?

Yes, PIC12HV615T-I/SN supports complementary PWM generation with programmable dead time via its Enhanced Capture/Compare/PWM (ECCP) module. Pins GP0 (P1B) and GP2 (P1A) - or GP4 (P1B*) and GP5 (P1A*) - can be configured as complementary outputs. The dead-time value is set in the PWM1CON register (bits DT[3:0]), providing 16 selectable delays ranging from 0 to 15 × Tosc, enabling precise shoot-through prevention in half-bridge or H-bridge driver stages.

What is the function of GP3 on PIC12HV615T-I/SN, and can it be used as a general-purpose I/O?

GP3 on PIC12HV615T-I/SN is input-only and cannot be configured as a general-purpose output. Its functions are MCLR (active-low master clear), T1G* (alternate Timer1 gate enable), and VPP (high-voltage programming). When MCLR is disabled in configuration bits, GP3 becomes a dedicated input with interrupt-on-change capability (IOC), but retains no output drive capability. This is explicitly stated in DS41302D, Table 1-2, Note 1: "Input only." Attempting to write to GP3 bit in GPIO register has no effect.

How does the analog comparator on PIC12HV615T-I/SN differ from the one on PIC12F609?

The PIC12HV615T-I/SN comparator shares the same core architecture as PIC12F609 - single comparator with CIN+, CIN0-, CIN1- inputs and COUT output - but adds software-selectable hysteresis via CMCON1 bit (DS41302D, page 73). PIC12F609 lacks this hysteresis control, making PIC12HV615T-I/SN more robust against noise-induced toggling in threshold-detection applications. Both devices support CVREF for programmable reference, but only PIC12HV615T-I/SN integrates this with the 10-bit ADC subsystem for unified analog front-end design.