PIC12HV752T-I/SN - 8-bit MCU, 1.75KB Flash, 20MHz, 8SOIC | Microchip
MPN： PIC12HV752T-I/SN ✓ 啟用中PIC12HV752T-I/SN 概覽
A microcontroller (MCU) is a single-chip computer containing a CPU, non-volatile program memory, working RAM, and a range of peripheral IP blocks; the 8-bit PIC architecture uses a RISC instruction set with a single accumulator (WREG) and hardware stack, providing deterministic timing and very compact code density (~one instruction per assembly line) compared to CISC 8-bit cores. The PIC12 family is Microchip's entry-level 8-pin line optimized for cost-sensitive analog and timing applications where pin count and BOM size matter more than memory depth.
Key features of the PIC12HV752 include two high-speed analog comparators with 20 ns response time, one Capture/Compare/PWM (CCP) module, a 5-bit DAC, internal 8 MHz oscillator, 6 I/O pins, and an internal shunt regulator that supports high-voltage operation. The device runs from a wide supply range thanks to its internal HV shunt, supports in-circuit serial programming (ICSP), and includes power-managed modes for low quiescent current.
The PIC12HV752 uses a Harvard architecture with a 14-bit instruction word, separate program and data buses, and a 2-level hardware call/return stack. Its 35-instruction RISC set makes it well suited for deterministic interrupt-driven control, while the integrated analog peripherals enable single-chip sensor interfaces without external op-amps.
Typical applications include LED lighting drivers, battery chargers, power-conversion supervisory circuits, automotive accessory modules, and small motor or fan control. The integrated HV shunt regulator is particularly useful when the board is fed from a loosely regulated 12 V or 24 V rail and only a single low-cost MCU is desired.
When designing with this device, ensure the HV shunt supply pin (VDD) is decoupled with at least 0.1 µF ceramic close to the pin, and that the GP5/RA5 high-voltage-tolerant pin is used for shunt current path. Programming is done via ICSP using Microchip's MPLAB X IDE and XC8 compiler; existing PIC12F752 firmware is fully source-compatible with only the supply-pin configuration differing.
This page synthesizes distributor pricing, drop-in same-family and cross-family alternatives, and practical design notes not found in the manufacturer datasheet alone.
直接替換替代品，適用於 PIC12HV752T-I/SN — 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： PIC12HV752T-I/SN （相同外形與佔位） — 差異在於 Package, Operating Temperature, Internal Oscillator, Timers, ADC.
PIC12HV752-I/SN
✅ 直接替換聯絡詢價
查看資料表 →PIC12HV752-E/SN
✅ 直接替換聯絡詢價
查看資料表 →PIC12HV752-E/P
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC12HV752-E/MF
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC12F752T-I/SN
✅ 直接替換聯絡詢價
查看資料表 →PIC12HV615T-I/SN
✅ 直接替換聯絡詢價
查看資料表 →PIC12HV752T-I/SN 最大額定值與電氣特性
| Core Architecture | 8-bit PIC mid-range RISC |
| Instruction Set Width | 14-bit |
| Program Memory (Flash) | 1.75 KB (1K x 14) |
| RAM | 64 bytes |
| EEPROM | 128 bytes |
| Maximum CPU Frequency | 20 MHz |
| Instruction Execution Time | 200 ns (5 MIPS) |
| Supply Voltage Range | 2 V to 5.5 V (HV shunt regulator on VDD) |
| 工作溫度 | -40C to +85C (Industrial) |
| I/O Pins | 6 |
| Analog Comparators | 2 (20 ns response time) |
| CCP Modules | 1 |
| DAC | 1 x 5-bit |
| Internal Oscillator | 8 MHz |
| 封裝 | 8-pin SOIC (SN), 3.90 mm body |
| 安裝類型 | Surface Mount |
| MSL 等級 | 1 |
| Lead-Free / RoHS | Lead-free finish, RoHS compliant |
| Programming Method | ICSP (In-Circuit Serial Programming) |
PIC12HV752T-I/SN 腳位配置
| 腳位 1 | VDD — Positive supply (2 V to 5.5 V) via internal HV shunt regulator |
| 腳位 2 | GP5/RA5 — Bidirectional I/O / high-voltage tolerant analog input |
| 腳位 3 | GP4/RA4 — Bidirectional I/O with interrupt-on-change |
| 腳位 4 | GP3/MCLR/VPP — Input only / Master Clear reset (active-low) / ICSP programming voltage |
| 腳位 5 | GP2/INT/COUT/T0CKI — Bidirectional I/O / external interrupt / comparator output / Timer0 clock |
| 腳位 6 | GP1/CIN-/ICSPCLK — Bidirectional I/O / comparator inverting input / ICSP clock |
| 腳位 7 | GP0/CIN+/ICSPDAT — Bidirectional I/O / comparator non-inverting input / ICSP data |
| 腳位 8 | VSS — Ground reference |
典型應用
PIC12HV752T-I/SN 適用於 6 應用s: LED Lighting Driver / Dimmer, Battery Charger Supervisory Controller, Industrial Sensor Signal Conditioner, Small DC Motor / Fan Speed Controller, Automotive Accessory Module (Non-Safety), Power-Supply Fault Detector / Supervisory IC.
LED Lighting Driver / Dimmer
The PIC12HV752T-I/SN fits LED lighting driver and dimmer modules because its internal high-voltage shunt regulator allows direct connection to rectified mains-derived DC rails up to 5.5 V without an external LDO, and its integrated 5-bit DAC plus two 20 ns analog comparators support closed-loop current regulation. Combined with the 20 MHz CPU (200 ns instruction cycle), the MCU can run PWM dimming at >1 kHz with negligible visible flicker. Place the PIC12HV752 between the HV rail and the LED string; use GP1/GP0 as comparator inputs across the current-sense resistor and CCP as the PWM output driving a MOSFET gate.
推薦
Battery Charger Supervisory Controller
The PIC12HV752T-I/SN is well suited as a supervisory controller in linear or switched battery charger designs because its two 20 ns comparators can monitor charge current and battery voltage simultaneously, while the integrated 5-bit DAC sets CC/CV thresholds. The 1.75 KB flash holds full CC/CV state machines and safety timers, and the internal 8 MHz oscillator removes the BOM cost of an external crystal. Use GP5 to sense pack voltage, GP0 for current-sense, and the CCP module to drive the charger pass element; the HV shunt simplifies USB-fed 5 V chargers.
推薦
Industrial Sensor Signal Conditioner
Industrial sensor signal conditioners benefit from the PIC12HV752T-I/SN because the dual 20 ns comparators enable window-discriminator threshold detection, the 5-bit DAC provides bias reference generation, and the 1.75 KB flash implements linearization and hysteresis algorithms. The HV shunt regulator accepts 12 V/24 V industrial bus transients up to 5.5 V (post-shunt), reducing external protection. Place the MCU near the sensor; use GP0/GP1 for comparator inputs, GP4 for alarm output, and the ICSP pins for factory calibration without removing the board.
推薦
Small DC Motor / Fan Speed Controller
The PIC12HV752T-I/SN drives small brushless DC motor or fan speed controllers because its CCP module generates PWM up to 20 MHz equivalent resolution, the 5-bit DAC produces analog speed reference, and the 64-byte RAM is sufficient for closed-loop PI state. The HV shunt accepts rectified AC-DC rails common in ceiling-fan and PC-fan applications. Use GP2 as the tachometer input, CCP1 as the PWM output to the gate driver, and GP1/GP0 for overcurrent comparators; firmware is straightforward under MPLAB XC8.
推薦
Automotive Accessory Module (Non-Safety)
Although not AEC-Q100 qualified, the PIC12HV752T-I/SN fits non-safety automotive accessories such as interior lighting, USB chargers, and HVAC mode switches because its industrial -40C to +85C rating covers most cabin environments. The HV shunt simplifies 12 V direct connection, the dual comparators handle overcurrent and thermal foldback, and the CCP drives solenoids or relays. Always pair with TVS protection on VDD for load-dump immunity, and use the PIC12HV752-E/SN extended-temp grade for under-hood-adjacent placements.
推薦
Power-Supply Fault Detector / Supervisory IC
The PIC12HV752T-I/SN operates as a digital supervisory companion to discrete power supplies because its two analog comparators can monitor both output voltage and current simultaneously with 20 ns response, and the CCP module drives a crowbar or PGOOD signal. The internal 8 MHz oscillator and HV shunt eliminate external clock and LDO components. Place the MCU on the secondary side of an isolated supply; use GP0 for voltage sense, GP1 for current sense, and the comparator interrupt to trigger the fault latch within microseconds of an out-of-window event.
推薦
推薦產品摘要
工程參考資料，適用於 PIC12HV752T-I/SN — 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 | PIC12HV752-I/SN | PIC12HV752-E/SN | PIC12HV752-E/MF | PIC12F752T-I/SN | PIC12HV615T-I/SN |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 8-pin SOIC (SN) | 8-pin SOIC (SN) - same | 8-pin SOIC (SN) - same | 8-pin DFN (MF) | 8-pin SOIC (SN) - same | 8-pin SOIC (SN) - same |
| Program Memory (Flash) | 1.75 KB | 1.75 KB | 1.75 KB | 1.75 KB | 1.75 KB | 1.75 KB |
| RAM | 64 bytes | 64 bytes | 64 bytes | 64 bytes | 64 bytes | 64 bytes |
| HV Shunt Regulator | Yes (2 V to 5.5 V) | Yes | Yes | Yes | No - external regulator required | Yes |
| Analog Comparators | 2 (20 ns) | 2 (20 ns) | 2 (20 ns) | 2 (20 ns) | 2 (20 ns) | 1 |
| 5-bit DAC | Yes | Yes | Yes | Yes | Yes | No |
| Temperature Grade | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Unit Price (qty 1000) | $0.99 | Approximately $0.95 (tube pricing may differ) | Approximately $1.10 | Approximately $1.15 | Approximately $0.89 | Approximately $0.85 |
主要差異化特點
- Integrated HV shunt regulator eliminates external LDO (對比PIC12F752T-I/SN)
- Two 20 ns analog comparators plus 5-bit DAC (對比PIC12HV615T-I/SN)
- Active tape-and-reel packaging in industrial temp range (對比PIC12HV752-I/SN)
設計說明
The internal HV shunt regulator on VDD accepts 2 V to 5.5 V but must be decoupled with at least 0.1 uF ceramic placed within 5 mm of the pin. For designs feeding 12 V or 24 V industrial rails, add an external Zener or TVS clamp to keep transients below 5.5 V, otherwise the shunt can dissipate more than its rated 250 mW and enter thermal shutdown.
When using ICSP for in-circuit programming, isolate the GP0/GP1 (ICSPDAT/ICSPCLK) lines from any large capacitance to ground; keep traces under 100 mm and add 4.7 kohm pull-ups to VDD for production boards without dedicated programming headers. Per the PIC12F752/HV752 datasheet, the MCLR pin (GP3) requires a 10 kohm pull-up to VDD for normal operation.
Estimated: total power dissipation at full 20 MHz with HV shunt active is approximately 12 mW (worst case from datasheet DC characteristics); verify with a bench measurement rather than relying on this estimate. A common pitfall is connecting an external regulated 5 V supply on VDD while also feeding HV-tolerant logic through GP5 - the datasheet specifies that GP5 must not exceed VDD + 0.3 V to avoid latch-up.
合規資訊
RoHS and REACH compliant per Microchip product page; lead-free (Pb-free) finish; -I suffix denotes industrial -40C to +85C temperature grade. Not AEC-Q100 qualified - not recommended for safety-critical automotive applications. Use extended-temperature -E variants for harsher environments.
