PIC16C782T-I/SS - 8-Bit MCU 3.5KB EPROM, ADC/DAC/OpAmp | Microchip
MPN： PIC16C782T-I/SS ✗ 停產PIC16C782T-I/SS 概覽
What is an 8-bit microcontroller with integrated analog? An 8-bit MCU combines a CPU, program memory, RAM, and digital I/O on a single die. Mixed-signal 8-bit MCUs add analog building blocks (ADC, DAC, op-amp, comparators) so that the chip can directly interface with sensors, drive analog signals, and close analog feedback loops without external analog ICs. The PIC16C782 belongs to the power management IC category of mixed-signal PIC microcontrollers, sitting below PIC18 and dsPIC families in Microchip's 8-bit MCU hierarchy.
Key features of the PIC16C782T-I/SS include 35 single-word instructions, PIC16C5X/PIC12CXXX upwards compatibility, an integrated op-amp that can be configured as a gain stage or comparator front-end, a PSMC block for switch-mode power conversion, dual analog comparators with programmable reference, and 16 digital I/O pins. The device supports in-circuit serial programming and operates over the industrial -40C to +85C temperature range.
The architecture is built on a RISC-based PIC core with a Harvard-style bus, allowing simultaneous instruction fetch and data access. The PSMC peripheral can generate PWM outputs with programmable frequency and duty cycle, dead-band control, and current-sense input, enabling closed-loop control of buck, boost, and flyback converters without an external PWM controller.
Typical applications include AC/DC and DC/DC switch-mode power supplies, battery chargers, LED drivers with analog dimming, sensor signal conditioning, and small motor control loops. The integrated analog peripherals reduce BOM count and PCB area in cost-sensitive industrial and consumer designs.
When designing with this device, evaluate OTP vs Flash trade-offs carefully - the 'C' PIC16 family uses one-time-programmable memory and is intended for mature high-volume production. For prototypes or low-volume runs, consider the Flash-based PIC16F equivalent family.
直接替換替代品，適用於 PIC16C782T-I/SS — 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： PIC16C782T-I/SS （相同外形與佔位） — 差異在於 Operating Temperature, Package, RoHS Status, Program Memory Size, ADC.
PIC16C782-I/SS
✅ 直接替換📋 參考替代品（不在目錄中）
PIC16C781T-I/SO
✅ 直接替換聯絡詢價
查看資料表 →PIC16C770-I/SS
✅ 直接替換聯絡詢價
查看資料表 →PIC16C771T-I/SS
✅ 直接替換聯絡詢價
查看資料表 →PIC16C773-I/SS
✅ 直接替換聯絡詢價
查看資料表 →PIC16C782T-I/SS 最大額定值與電氣特性
| Program Memory Size | 3.5 KB (EPROM, OTP) |
| RAM Size | 128 bytes |
| CPU Core | PIC16 (8-bit RISC) |
| Instruction Set Size | 35 single-word instructions |
| Maximum CPU Speed | 20 MHz |
| Instruction Execution Time | 200 ns |
| Operating Voltage Range | 2.5 V to 5.5 V |
| I/O Pins | 16 |
| ADC | 8-bit, multi-channel |
| DAC | 8-bit, on-chip |
| Operational Amplifier | 1x on-chip op-amp |
| Analog Comparators | 2 |
| PSMC | Programmable Switch Mode Controller |
| 封裝 | SSOP-20 (5.30 mm body) |
| 工作溫度 | -40 C to +85 C (Industrial) |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
| 記憶體類型 | OTP EPROM |
PIC16C782T-I/SS 腳位配置
| 腳位 1 | RA2/AN2 — Port A bit 2 / ADC input channel 2 |
| 腳位 2 | RA3/AN3 — Port A bit 3 / ADC input channel 3 |
| 腳位 3 | RA4/AN4 — Port A bit 4 / ADC input channel 4 |
| 腳位 4 | RA5/MCLR — Port A bit 5 / Master Clear (reset) |
| 腳位 5 | VSS — Ground reference |
| 腳位 6 | RB0/INT — Port B bit 0 / External interrupt |
| 腳位 7 | RB1 — Port B bit 1 |
| 腳位 8 | RB2 — Port B bit 2 |
| 腳位 9 | RB3 — Port B bit 3 |
| 腳位 10 | RB4 — Port B bit 4 |
| 腳位 11 | RB5 — Port B bit 5 |
| 腳位 12 | RB6 — Port B bit 6 |
| 腳位 13 | RB7 — Port B bit 7 |
| 腳位 14 | VDD — Positive supply voltage (2.5V to 5.5V) |
| 腳位 15 | OSC2 — Oscillator output / clock out |
| 腳位 16 | OSC1 — Oscillator input / external clock in |
| 腳位 17 | RA0/AN0 — Port A bit 0 / ADC input channel 0 |
| 腳位 18 | RA1/AN1 — Port A bit 1 / ADC input channel 1 |
| 腳位 19 | VREF — ADC voltage reference |
| 腳位 20 | DAC — 8-bit DAC output |
典型應用
PIC16C782T-I/SS 適用於 6 應用s: AC/DC Switch-Mode Power Supply Controller, Battery Charger Controller, LED Lighting Driver with Analog Dimming, Sensor Signal Conditioning Front-End, Small DC Motor Speed Control, Smart Power Strip / Load Manager.
AC/DC Switch-Mode Power Supply Controller
The PIC16C782T-I/SS is purpose-designed for offline and DC/DC switch-mode power supply (SMPS) control. Its integrated Programmable Switch Mode Controller (PSMC) generates PWM with programmable frequency, duty cycle, and dead-band control, while the 8-bit ADC samples output voltage and primary-side current for closed-loop regulation. The on-chip op-amp can be configured as a Type-II or Type-III error amplifier, eliminating an external analog IC. Operating at 20 MHz with 200 ns instruction time, the PIC16C782T-I/SS can run voltage-mode or current-mode control loops with adequate bandwidth for sub-100 W converters. The 3.5 KB EPROM holds state machine and soft-start code. Recommended companion: Microchip MCP16502 for auxiliary housekeeping rails.
推薦
Battery Charger Controller
The PIC16C782T-I/SS is well suited to single- and multi-cell battery charger designs. The PSMC drives a buck or buck-boost MOSFET stage with precise PWM duty cycle, the 8-bit ADC monitors battery voltage and charge current through sense resistors, and the 8-bit DAC can generate a programmable reference for current regulation. The op-amp conditions the charge-current sense signal before ADC sampling. The 35-instruction RISC core allows simple state machines for CC/CV (constant-current/constant-voltage) charging profiles, temperature fold-back, and charge-termination detection. Industrial temperature grade (-40C to +85C) supports chargers for outdoor or automotive environments.
推薦
LED Lighting Driver with Analog Dimming
The PIC16C782T-I/SS can implement an LED driver with both PWM digital dimming and analog dimming control. The PSMC generates the switching frequency for a buck or boost LED driver topology, the 8-bit ADC reads LED current feedback and supply voltage, and the 8-bit DAC provides a programmable analog reference for analog dimming. The op-amp can be configured as a transconductance amplifier to convert current-sense voltage into a stable error signal. This combination enables smooth dimming curves across the full brightness range while maintaining current regulation accuracy, suitable for architectural lighting, signage, and indicator applications.
推薦
Sensor Signal Conditioning Front-End
The PIC16C782T-I/SS integrates all the analog building blocks needed to interface with analog sensors. The on-chip op-amp can be configured as a low-noise gain stage for thermocouples, strain gauges, or photodiodes, while the 8-bit ADC digitizes the conditioned signal. Two analog comparators can implement window-comparator threshold detection for limit alarms without CPU intervention. The 16 digital I/O pins provide communication interfaces (I2C, SPI, UART via software bit-banging) for sending digitized data to a host. Industrial temperature range and small SSOP-20 footprint suit compact industrial sensor modules.
推薦
Small DC Motor Speed Control
The PIC16C782T-I/SS provides a compact solution for brushed DC or small BLDC motor speed control. The PSMC block generates complementary PWM outputs with programmable dead-band, ideal for driving an H-bridge with shoot-through protection. The 8-bit ADC samples back-EMF or shunt current for closed-loop speed regulation, and the 8-bit DAC sets the speed reference. The op-amp can amplify the current-sense signal before ADC sampling. With 20 MHz CPU and 200 ns instruction time, the control loop runs comfortably at kHz rates suitable for small fan, pump, or toy motor applications.
推薦
Smart Power Strip / Load Manager
The PIC16C782T-I/SS can manage multiple AC or DC load channels in a smart power strip or industrial load manager. The PSMC drives SSR (solid-state relay) gates or low-side MOSFET switches, while the ADC monitors total current draw via a current shunt. The op-amp amplifies the shunt signal for ADC sampling with sufficient resolution to detect per-channel current. The integrated DAC can set individual channel current thresholds for load-shedding or priority-disconnect functions. Industrial temperature range and small SSOP-20 package suit enclosed power-distribution products.
推薦
推薦產品摘要
工程參考資料，適用於 PIC16C782T-I/SS — 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 | PIC16C782-I/SS | PIC16C781T-I/SO | PIC16C770-I/SS | PIC16C771T-I/SS | PIC16C773-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SSOP-20 | SSOP-20 - same | SOIC-20 - same footprint family, wider body | SSOP-20 - same | SSOP-20 - same | SSOP-20 - same |
| PSMC (PWM) | Yes | Yes | No | No | No | No |
主要差異化特點
- Integrated Programmable Switch Mode Controller (PSMC) (對比PIC16C781T-I/SO)
- On-chip 8-bit DAC for analog references (對比PIC16C770-I/SS)
- Industrial-grade operating temperature (對比Consumer-grade PIC16C7x0 parts)
設計說明
PIC16C782T-I/SS is OTP (one-time-programmable) EPROM. Once programmed, the device cannot be erased or reprogrammed. This makes it unsuitable for development or low-volume runs where firmware iteration is expected. For development, use a Flash-based equivalent such as PIC16F88 or PIC16F882 and port the firmware to PIC16C782T-I/SS only for production. Errors in OTP code result in scrapped parts and direct cost impact on the BOM.
Place a 0.1 uF decoupling capacitor as close as possible to the VDD pin (pin 14), with a trace length below 5 mm. Add a 10 uF bulk capacitor at the board's power entry point. The PIC16C782 has internal brown-out reset (BOR) that holds the CPU in reset if VDD drops below threshold, but VDD rise time must still meet the datasheet's power-on reset timing (typically 72 ms FVRST delay) for reliable startup.
Route the oscillator traces (OSC1/OSC2 pins 15-16) symmetrically with short, matched lengths to avoid duty-cycle distortion. Keep clock traces away from analog ADC inputs to reduce coupled noise. The DAC output (pin 20) and VREF (pin 19) should be guarded with a ground pour and short traces; if the DAC drives external circuitry, buffer it with the on-chip op-amp configured as a unity-gain follower to drive low-impedance loads.
Estimated: at 5V supply, 20 MHz clock, and all peripherals active, the PIC16C782T-I/SS typically consumes 15-20 mA of supply current (see datasheet IDD vs frequency curves). Power dissipation is roughly 75-100 mW, well within the SSOP-20 thermal resistance (theta_JA approximately 100 C/W on a standard JEDEC 2-layer board). This yields a junction temperature rise of 7-10 C above ambient, no heatsink required for normal operation.
合規資訊
RoHS compliant per Microchip product declaration. Not AEC-Q100 qualified for automotive - PIC16C782 family targets industrial and consumer markets. Halogen-free status not explicitly stated in available data; verify with Microchip for specific lot requirements.
