Microchip Technology PIC12HV609-I/P

Overview

PIC12HV609-I/P from Microchip Technology is an 8-pin, flash-based 8-bit CMOS microcontroller with integrated shunt voltage regulator, precision internal oscillator (±1% typical), 1024-word program memory, and 64-byte RAM. It features five I/O pins, one analog comparator with programmable on-chip voltage reference, Timer0 and enhanced Timer1, and operates from 2.0V to user-defined maximum voltage (shunt regulator limits V_DD to ≤5V). It is used in low-cost, space-constrained embedded control applications such as LED drivers and sensor interface modules.

For engineers reviewing the PIC12HV609-I/P datasheet, PIC12HV609-I/P pinout, PIC12HV609-I/P application, or PIC12HV609-I/P equivalent, this page delivers verified technical context, validated pin functions, confirmed shunt regulator operation (5V/4–50mA), exact peripheral capabilities (no ADC/ECCP), and real-world selection guidance against functionally aligned alternatives.

Technical Context

The PIC12HV609-I/P implements a RISC CPU with 35 single-cycle instructions (except branches), 8-level hardware stack, and direct/indirect/relative addressing. Its oscillator supports DC–20 MHz input or factory-calibrated internal source (4/8 MHz selectable), enabling precise timing without external crystals.

Peripheral integration centers on analog comparison (CIN+, CIN0−, CIN1−, COUT, CVREF), timer subsystems (8-bit Timer0 with prescaler; 16-bit Timer1 with gate control and external clock options), and In-Circuit Serial Programming via GP0/GP1. The shunt regulator is active only when MCLR/VPP is held high during normal operation and provides regulated 5V reference for internal use.

Key Specifications

Pinout & Package

PIC12HV609-I/P is supplied in 8-pin PDIP (plastic dual in-line package) with 0.3-inch body width and standard through-hole footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PIC12HV609-I/P, PIC12F609-I/P removes HV regulation but lowers unit cost, while PIC12HV615-I/P adds ADC and PWM at higher complexity - enabling migration paths from simple supervision to intelligent control without board redesign.

Availability

PIC12HV609-I/P is available at Aetrix Electronics and suitable for LED driver control, industrial sensor interface, smart switch power management, and consumer appliance timer applications requiring stable component supply, long-lifecycle support, and consistent parametric performance.

Supply support for PIC12HV609-I/P 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 is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and development tools, with ISO/TS-16949:2002 certification across design and wafer fabrication facilities.

The PIC12HV609-I/P belongs to Microchip's low-pin-count HV microcontroller product line, designed specifically for cost-sensitive embedded systems requiring internal voltage regulation and robust analog supervision in compact 8-pin packages.

FAQ

What is the maximum allowable VDD voltage for PIC12HV609-I/P?

The PIC12HV609-I/P incorporates an internal shunt voltage regulator rated for 5V output. Per Microchip DS41302D-page 3, "Voltage across the shunt regulator should not exceed 5V." Therefore, VDD must be clamped at or below 5V - exceeding this risks damage to the regulator and internal circuitry. This differs from the PIC12F609-I/P, which supports up to 5.5V without regulation.

Does PIC12HV609-I/P include an analog-to-digital converter (ADC)?

No, the PIC12HV609-I/P does not include an ADC. As confirmed in Table 1 (DS41302D-page 4), it has "0" channels listed under the "10-bit A/D (ch)" column. ADC functionality is present only in the PIC12F615/617/HV615 variants. The PIC12HV609-I/P relies solely on its analog comparator module (CIN+, CIN0−, CIN1−, COUT) for threshold-based decisions.

Can PIC12HV609-I/P operate without an external crystal?

Yes, the PIC12HV609-I/P can operate without an external crystal. It features a factory-calibrated internal oscillator accurate to ±1% typical at 4 MHz or 8 MHz, selectable in software. External crystals are optional and only required if higher frequency stability or frequencies above 20 MHz are needed - though the device's max clock input remains 20 MHz regardless of source.

What programming interface does PIC12HV609-I/P support?

The PIC12HV609-I/P supports In-Circuit Serial Programming (ICSP™) via two dedicated pins: GP0 (ICSPDAT) and GP1 (ICSPCLK). This allows full read/write/erase functionality while the device is soldered onto the target board. No high-voltage programming adapter is needed beyond standard 13V VPP applied to GP3/MCLR during programming mode.

Is PIC12HV609-I/P pin-compatible with PIC12F609-I/P?

Yes, PIC12HV609-I/P is pin-compatible with PIC12F609-I/P in all supported packages (PDIP, SOIC, MSOP, DFN), sharing identical pin functions and physical layout per Table 1-1 (DS41302D-page 9). The only functional difference is the presence of the shunt regulator in the HV variant - otherwise, code, peripherals, and I/O behavior are identical, enabling drop-in replacement where voltage regulation is required.