PIC12HV615T-I/MD - 8-Bit 20MHz 1.75KB Flash MCU | Microchip
MPN： PIC12HV615T-I/MD ✓ 啟用中PIC12HV615T-I/MD 概覽
A microcontroller (MCU) is a single-chip computer containing a CPU, non-volatile program memory, RAM, and programmable I/O peripherals. The PIC12HV615 belongs to the PIC12 family of 8-bit RISC microcontrollers from Microchip, which sits within the broader 8-bit microcontroller hierarchy: 8-bit MCU -> RISC microcontroller -> embedded controller -> semiconductor. The "HV" prefix denotes an integrated shunt voltage regulator, a niche feature that lets the chip self-regulate from a wide input range while the 8-pin DFN package keeps the solution footprint minimal.
Key features include six general-purpose I/O pins, four 10-bit ADC channels, two 8-bit timers plus one 16-bit timer, an enhanced PWM/Capture/Compare module, an internal 8 MHz oscillator with PLL for 32 MHz operation, and a configurable 5-bit DAC. The HV shunt regulator accepts inputs above 2.5 V and tolerates voltage drops from unregulated supplies, which simplifies isolated or energy-harvesting designs. Debug is supported through the ICSP interface using Microchip's MPLAB® PICkit™ 5 in-circuit debugger.
Typical applications include LED lighting controllers, sensor signal conditioning, battery chargers, and low-cost consumer appliance controls where board space is constrained. The DFN exposed-pad package enables efficient heat dissipation for the HV regulator while maintaining a 3 x 3 mm footprint suitable for hand-held and IoT-style enclosures. When selecting this part, ensure the application's input impedance allows the HV shunt regulator to source sufficient bias current (typically 5 mA minimum) - otherwise the optional PIC12F615 (without HV) is the lower-cost alternative.
This page synthesizes distributor pricing, drop-in alternatives, and engineering design notes beyond the manufacturer datasheet summary, with cross-references to functionally equivalent parts in the same DFN-8 footprint.
直接替換替代品，適用於 PIC12HV615T-I/MD — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC12HV615T-I/MD （相同外形與佔位） — 差異在於 Internal Oscillator, Package, ADC, Comparators, Timers.
PIC12HV615-I/MD
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC12HV615T-I/MG
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC12HV615-E/MD
✅ 直接替換📋 參考替代品（不在目錄中）
PIC12F615T-I/MD
✅ 直接替換📋 參考替代品（不在目錄中）
PIC12F617T-I/MF
✅ 直接替換聯絡詢價
查看資料表 →PIC12F683T-I/MD
✅ 直接替換📋 參考替代品（不在目錄中）
PIC12F509T-I/MD
✅ 直接替換📋 參考替代品（不在目錄中）
PIC12HV615T-I/MD 最大額定值與電氣特性
| Architecture | PIC12 (enhanced mid-range 8-bit RISC) |
| Program Memory | 1.75 KB Flash |
| SRAM | 64 bytes |
| EEPROM | 128 bytes |
| Maximum Clock Speed | 20 MHz |
| 供應電壓 | 2.5 V / 3.3 V / 5 V |
| I/O Pins | 6 |
| ADC Channels | 4 x 10-bit |
| Timers | 2 x 8-bit, 1 x 16-bit |
| PWM/Capture/Compare | Enhanced ECCP module |
| DAC | 5-bit |
| Internal Oscillator | 8 MHz (with PLL up to 32 MHz) |
| Special Feature | HV shunt voltage regulator |
| 工作溫度 | -40C to +85C (Industrial) |
| 封裝 | 8-pin DFN (MD), 3 x 3 mm, exposed pad |
| 安裝類型 | Surface Mount |
| 生命週期狀態 | ACTIVE |
PIC12HV615T-I/MD 腳位配置
| 腳位 1 | GP3/MCLR/VPP — General-purpose I/O / Master Clear reset / Programming voltage |
| 腳位 2 | VDD — Positive supply voltage (HV shunt regulator input/output) |
| 腳位 3 | VSS — Ground reference |
| 腳位 4 | GP0/AN0/CIN+/PWM0 — GPIO / Analog ch0 / Comparator input+ / PWM output |
| 腳位 5 | GP1/AN1/CIN-/PWM1 — GPIO / Analog ch1 / Comparator input- / PWM output |
| 腳位 6 | GP2/AN2/T0CKI/PWM2 — GPIO / Analog ch2 / Timer0 clock / PWM output |
| 腳位 7 | GP4/AN3/PWM3 — GPIO / Analog ch3 / PWM output |
| 腳位 8 | GP5/AN4/T1CKI/PWM4/CLKIN — GPIO / Analog ch4 / Timer1 clock / PWM / external clock input |
典型應用
PIC12HV615T-I/MD 適用於 6 應用s: LED Lighting Controllers, Solar-Powered Sensor Nodes, Battery Charger Controllers, Industrial Sensor Signal Conditioning, Low-Cost Consumer Appliance Control, Automotive Accessory Modules.
LED Lighting Controllers
The PIC12HV615T-I/MD's integrated HV shunt regulator simplifies constant-current LED driver designs by allowing direct operation from a 12 V or 24 V LED bus without an external regulator. The enhanced PWM module (ECCP) provides flexible dimming via PWM frequency and duty cycle control up to 20 MHz resolution, while the 4-channel 10-bit ADC enables closed-loop current sensing for accurate lumen output. The DFN-8 exposed-pad package keeps the solution footprint under 5 mm x 5 mm, ideal for MR16 and linear LED tubes.
推薦
Solar-Powered Sensor Nodes
Energy-harvesting applications benefit from the PIC12HV615T-I/MD's HV shunt regulator, which accepts fluctuating solar cell voltages from 2.5 V to 13 V without external regulation. The chip's 8 MHz internal oscillator with PLL eliminates external crystal cost, while low-power sleep modes and the 5-bit DAC support adaptive sensor sampling. Battery charging profiles can be implemented in firmware using the 16-bit timer and ADC for voltage/current monitoring.
推薦
Battery Charger Controllers
The PIC12HV615T-I/MD serves as a low-cost battery management controller for 1-cell Li-ion or NiMH packs, with its HV shunt handling 5 V or 12 V wall-adapter inputs directly. The 4-channel 10-bit ADC monitors battery voltage, charge current, and temperature thermistor inputs simultaneously, while the ECCP PWM module regulates charge current through a MOSFET or BJT. Firmware-controlled CC-CV charge profiles can be tuned without hardware changes.
推薦
Industrial Sensor Signal Conditioning
Industrial 4-20 mA loop-powered transmitters benefit from the PIC12HV615T-I/MD's HV regulator, which operates directly from loop current without additional regulation stages. The 10-bit ADC with internal voltage reference provides ratiometric measurements for bridge sensors, RTDs, and thermocouples. The 8-pin DFN package and industrial -40C to +85C temperature range suit harsh factory environments, while the enhanced mid-range core delivers 5 MIPS for digital filtering.
推薦
Low-Cost Consumer Appliance Control
Small kitchen and personal-care appliances use the PIC12HV615T-I/MD as a single-chip control MCU with the HV regulator simplifying universal-input power supply designs. The 6 I/O pins drive relays, triacs, buttons, and LEDs directly, while the PWM module controls motor speed or heater duty cycle. The 1.75 KB Flash accommodates standard wash, blend, and timing profiles typical of blenders, toothbrushes, and small pumps.
推薦
Automotive Accessory Modules
Aftermarket automotive accessories such as alarm sensors, lighting controllers, and gauge displays use the PIC12HV615T-I/MD (extended grade) to interface directly with the 12 V vehicle battery without external regulators. The 16-bit timer accurately measures engine RPM or wheel speed from digital sensors, while the ADC monitors battery voltage for low-voltage cutoff. Industrial temperature grade handles under-dash thermal conditions.
推薦
推薦產品摘要
工程參考資料，適用於 PIC12HV615T-I/MD — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC12HV615-I/MD | PIC12HV615-E/MD | PIC12F615T-I/MD | PIC12F617T-I/MF | PIC12F683T-I/MD |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | DFN-8 (MD) 3x3mm | DFN-8 (MD) 3x3mm - same | DFN-8 (MD) 3x3mm - same | DFN-8 (MD) 3x3mm - same | DFN-8 (MF) 3x3mm - same footprint | DFN-8 (MD) 3x3mm - same |
| Program Memory | 1.75 KB Flash | 1.75 KB Flash | 1.75 KB Flash | 1.75 KB Flash | 3.5 KB Flash (+100%) | 2 KB Flash (+14%) |
| SRAM | 64 bytes | 64 bytes | 64 bytes | 64 bytes | 128 bytes (+100%) | 256 bytes (+300%) |
| HV Shunt Regulator | Yes (integrated) | Yes | Yes | No | No | No |
| Maximum Clock Speed | 20 MHz (8 MHz internal w/ PLL to 32 MHz) | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| ADC | 4 x 10-bit | 4 x 10-bit | 4 x 10-bit | 4 x 10-bit | 4 x 10-bit | 4 x 10-bit |
| Temperature Grade | Industrial (-40C to +85C) | Industrial | Extended (-40C to +125C) | Industrial | Industrial | Industrial |
主要差異化特點
- Integrated HV shunt regulator eliminates external 5V/12V LDO (對比PIC12F615T-I/MD)
- Drop-in same-footprint upgrade path with 4x more program memory (對比PIC12F617T-I/MF)
- Extended temperature grade option available in same package (對比PIC12HV615-I/MD)
設計說明
The PIC12HV615T-I/MD's integrated HV shunt regulator requires a minimum bias current of approximately 5 mA to maintain regulation. When designing the input resistor network, calculate R = (Vin - 5.0V) / 5 mA to ensure proper operation across the full supply range. Below the minimum current, VDD will droop and the MCU will brown out. Use a 1% tolerance resistor for accurate regulation setpoint.
The HV shunt regulator dissipates (Vin - 5.0V) * I_bias power. At Vin=12V and 5 mA bias, this is 35 mW - negligible. However, at Vin=15V with higher bias currents, dissipation can reach 100-150 mW and the 8-pin DFN exposed pad becomes critical for heat removal. Connect the exposed pad to a 5 mm x 5 mm copper pour with thermal vias to a ground plane for reliable operation.
Place the HV shunt series resistor and VDD bypass capacitor (100 nF ceramic minimum, 10 uF tantalum recommended) within 3 mm of pins 2 (VDD) and 3 (VSS). The exposed thermal pad must be soldered to a top-layer copper pour and stitched with thermal vias (0.3 mm drill, 0.5 mm pitch) to the internal ground plane. Avoid routing signal traces under the exposed pad to prevent leakage.
The MCLR pin (pin 1) is internally open-drain on the HV variants and requires a 10 kohm pull-up to VDD for normal operation - omitting this prevents startup. ICSP programming requires high-voltage (typically 13V) on MCLR; use a programming header with proper isolation diodes if MCLR is shared with external reset circuitry. The GP3 pin is input-only - do not configure it as output.
Route the ADC analog inputs (GP0, GP1, GP2, GP4) away from PWM outputs (GP2, GP4, GP5) and digital switching signals to minimize crosstalk. Use a ground star-point topology with VSS pin and exposed pad converging at the bypass capacitor ground. Keep ADC reference voltage traces short and guarded with ground pours for accurate 10-bit conversions.
合規資訊
RoHS and REACH compliant per Microchip product page. Lead-free and halogen-free per Microchip environmental compliance data. AEC-Q100 not qualified - the automotive-grade equivalent is PIC12HV615T-I/MG with explicit AEC-Q100 documentation.
