PIC16C924-08/PT - 8MHz 8-Bit MCU w/ LCD Driver | Microchip
MPN: PIC16C924-08/PT ✓ Hoạt độngPIC16C924-08/PT Tóm tắt
A microcontroller (MCU) is a single-chip computer containing a CPU core, non-volatile program memory, working RAM, and a mix of peripheral blocks such as timers, A/D converters, communication interfaces, and I/O. The PIC16C9xx family belongs to the 8-bit PIC16C sub-family, which sits within the larger PICmicro architecture hierarchy: 8-bit MCU -> RISC microcontroller -> embedded controller -> semiconductor IC. The "C" suffix indicates an OTP (One-Time-Programmable) EPROM-based program memory variant intended for low-to-medium volume production where field re-programmability is not required.
Key features of the PIC16C924 include the integrated LCD driver (32 segments x 4 commons), a 5-channel 8-bit successive-approximation ADC with input multiplexing, a synchronous serial port configurable as 3-wire SPI or 2-wire I2C, a USART for asynchronous/synchronous communication, two 8-bit timers plus one 16-bit timer with capture/compare/PWM capability, and a programmable watchdog timer with its own on-chip RC oscillator. The device supports up to 52 digital I/O pins, accommodates a wide commercial operating temperature range, and operates from a single 3.0 V to 6.0 V supply.
Architecturally, the PIC16C924 uses Microchip's Harvard RISC core with separate program and data buses, a 14-bit-wide instruction word, and a hardware multiply assist. The LCD driver uses an internal charge pump and dedicated segment/commons pins with software-configurable frame frequency and bias, reducing external component count. The OTP program memory allows prototype-to-production migration on the same silicon, which simplifies BOM and qualification for low-volume industrial and consumer appliances.
Typical applications include industrial control panels with segment LCDs, white-goods and home-appliance user interfaces, HVAC thermostats and metering front-panels, medical device front-end displays, automotive dashboard clusters (non-safety), POS terminals with integrated numeric keypads, and instrument-cluster readouts. The 52 I/O lines make the part suitable for keypad scanning, LED driving, and discrete control outputs alongside the LCD glass.
Designers should note the part operates at 8 MHz maximum oscillator and runs each instruction in 4 oscillator cycles (200 ns at 8 MHz). Power-on reset, brown-out detect, and a watchdog timer with dedicated RC oscillator are integrated. Use decoupling capacitors of 0.1 uF near each VDD/VSS pair, route the analog AVdd/AVss pair separately, and follow Microchip's recommended PCB layout for LCD bias generation to minimize segment flicker.
This page synthesizes distributor pricing across six major channels, drop-in alternative SKUs from Microchip's own PIC16C9xx family, and practical design notes not duplicated on any single manufacturer or distributor listing.
Bộ thay thế dễ dàng lắp đặt cho PIC16C924-08/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16C924-08/PT (cùng hình factor và footprint) — khác nhau ở LCD Driver, Timers, Package, Program Memory Type, Core.
PIC16C924-08I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C924T-08/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C924-04/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C924-04I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F924-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C923-08/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C924-08/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | 8-bit PIC16C RISC (Harvard) |
| Program Memory | 7 KB (4K x 14) OTP EPROM |
| RAM | 176 bytes |
| EEPROM Data Memory | None (OTP variant) |
| Max CPU Frequency | 8 MHz |
| Instruction Cycle | 200 ns (4 x Tosc) |
| Instruction Word | 14 bits |
| Digital I/O Pins | 52 |
| ADC | 5 channels x 8-bit SAR |
| LCD Driver | 32 segments x 4 commons |
| Timers | 2 x 8-bit + 1 x 16-bit (CCP) |
| Communication | SSP (SPI / I2C), USART |
| Supply Voltage (VDD) | 3.0 V to 6.0 V |
| Nhiệt độ hoạt động | 0C to +70C (Commercial) |
| Hộp | 64-pin TQFP (PT) 10x10 mm |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (168 hours) |
| Lead-Free / RoHS | Compliant (per part marking suffix /PT) |
Cấu hình chân PIC16C924-08/PT
| Chân 1 | RA0/AN0 — PORTA bit 0 / ADC channel 0 |
| Chân 2 | RA1/AN1 — PORTA bit 1 / ADC channel 1 |
| Chân 3 | RA2/AN2 — PORTA bit 2 / ADC channel 2 |
| Chân 4 | RA3/AN3 — PORTA bit 3 / ADC channel 3 |
| Chân 5 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Chân 6 | RA5/AN4 — PORTA bit 5 / ADC channel 4 |
| Chân 7 | OSC1/CLKIN — Crystal oscillator input / external clock |
| Chân 8 | OSC2/CLKOUT — Crystal oscillator output |
| Chân 9 | MCLR — Master clear reset (active low) |
| Chân 10 | VSS — Ground |
| Chân 11 | VDD — Positive supply |
| Chân 12 | RB0/INT — PORTB bit 0 / external interrupt |
| Chân 13 | RB1 — PORTB bit 1 |
| Chân 14 | RB2 — PORTB bit 2 |
| Chân 15 | RB3 — PORTB bit 3 |
| Chân 16 | RB4 — PORTB bit 4 |
| Chân 17 | RB5 — PORTB bit 5 |
| Chân 18 | RB6 — PORTB bit 6 / in-circuit programming clock |
| Chân 19 | RB7 — PORTB bit 7 / in-circuit programming data |
| Chân 20 | RC0 — PORTC bit 0 |
| Chân 21 | RC1 — PORTC bit 1 |
| Chân 22 | RC2 — PORTC bit 2 |
| Chân 23 | RC3 — PORTC bit 3 |
| Chân 24 | RC4 — PORTC bit 4 |
| Chân 25 | RC5 — PORTC bit 5 |
| Chân 26 | RC6 — PORTC bit 6 / TX |
| Chân 27 | RC7 — PORTC bit 7 / RX |
| Chân 28 | RD0/SEG0 — PORTD bit 0 / LCD segment 0 |
| Chân 29 | RD1/SEG1 — PORTD bit 1 / LCD segment 1 |
| Chân 30 | RD2/SEG2 — PORTD bit 2 / LCD segment 2 |
| Chân 31 | RD3/SEG3 — PORTD bit 3 / LCD segment 3 |
| Chân 32 | RD4/SEG4 — PORTD bit 4 / LCD segment 4 |
| Chân 33 | RD5/SEG5 — PORTD bit 5 / LCD segment 5 |
| Chân 34 | RD6/SEG6 — PORTD bit 6 / LCD segment 6 |
| Chân 35 | RD7/SEG7 — PORTD bit 7 / LCD segment 7 |
| Chân 36 | RE0/SEG8 — PORTE bit 0 / LCD segment 8 |
| Chân 37 | RE1/SEG9 — PORTE bit 1 / LCD segment 9 |
| Chân 38 | RE2/SEG10 — PORTE bit 2 / LCD segment 10 |
| Chân 39 | SEG11 — LCD segment 11 |
| Chân 40 | SEG12 — LCD segment 12 |
| Chân 41 | SEG13 — LCD segment 13 |
| Chân 42 | SEG14 — LCD segment 14 |
| Chân 43 | SEG15 — LCD segment 15 |
| Chân 44 | SEG16 — LCD segment 16 |
| Chân 45 | SEG17 — LCD segment 17 |
| Chân 46 | SEG18 — LCD segment 18 |
| Chân 47 | SEG19 — LCD segment 19 |
| Chân 48 | SEG20 — LCD segment 20 |
| Chân 49 | SEG21 — LCD segment 21 |
| Chân 50 | SEG22 — LCD segment 22 |
| Chân 51 | SEG23 — LCD segment 23 |
| Chân 52 | SEG24 — LCD segment 24 |
| Chân 53 | SEG25 — LCD segment 25 |
| Chân 54 | SEG26 — LCD segment 26 |
| Chân 55 | SEG27 — LCD segment 27 |
| Chân 56 | SEG28 — LCD segment 28 |
| Chân 57 | SEG29 — LCD segment 29 |
| Chân 58 | SEG30 — LCD segment 30 |
| Chân 59 | SEG31 — LCD segment 31 |
| Chân 60 | COM0 — LCD common 0 |
| Chân 61 | COM1 — LCD common 1 |
| Chân 62 | COM2 — LCD common 2 |
| Chân 63 | COM3 — LCD common 3 |
| Chân 64 | AVDD/AVSS — Analog supply pair (shared pin / dedicated analog ground) |
Ứng dụng tiêu biểu
PIC16C924-08/PT phù hợp cho 7 Áp dụngs: Industrial Control Panel with Segment LCD, White-Goods and Home Appliance User Interface, HVAC Thermostat and Metering Front Panel, POS Terminal Numeric Keypad and Display, Medical Device Front-End Display, Instrument Cluster Readout (Non-Safety), Educational 8-Bit Microcontroller Platform.
Industrial Control Panel with Segment LCD
The PIC16C924-08/PT is purpose-built for industrial front-panel HMIs that need a 32-segment x 4-common LCD without an external segment driver. Its 52 digital I/O lines drive keypad matrix scanning (up to 8x8), discrete status LEDs, and relay outputs, while the integrated 5-channel 8-bit ADC reads potentiometers, NTC temperature sensors, or 4-20 mA loop shunts. The 8 MHz core executes the LCD refresh ISR, button debounce, and Modbus RTU framing on the USART with margin to spare, all in a single chip that fits inside the panel cutout. The OTP program memory protects proprietary set-point tables against firmware extraction by competitors.
Được đề xuất
White-Goods and Home Appliance User Interface
Washing machines, dishwashers, ovens, and microwave ovens all need a 7-segment or custom-icon LCD plus tactile buttons and a few analog sensors. The PIC16C924-08/PT's on-chip 32-segment LCD driver eliminates the need for an external HT1621 or similar segment driver, reducing BOM and PCB area. The 5-channel ADC handles temperature sensing (NTC), door-switch status, and rotary encoder position; the 16-bit CCP module drives a buzzer for end-of-cycle alerts. Operating from 5V and tolerant of motor-noise on the supply rail, the device suits appliances with brushed universal motors.
Được đề xuất
HVAC Thermostat and Metering Front Panel
Residential and light-commercial thermostats need a backlit segment LCD showing set-point, ambient temperature, fan speed, and system mode. The PIC16C924-08/PT drives the LCD glass directly, scans the up/down/set buttons, and reads the temperature sensor (NTC or MCP9700) through one of its 5 ADC channels. The USART links to the indoor unit's main board for set-point reporting, while the watchdog timer with its dedicated RC oscillator provides a safety net against firmware lockup. Industrial temp grade is available as PIC16C924-08I/PT for outdoor equipment.
Được đề xuất
POS Terminal Numeric Keypad and Display
Point-of-sale terminals need a numeric 16-key keypad, a small 32-segment LCD for transaction amount display, and a serial link to the main terminal. The PIC16C924-08/PT handles all three: 16 keypad pins scan via PORTB, the integrated LCD driver renders the amount, and the USART/SSP talks to the main controller. The OTP program memory protects payment-processing logic from firmware extraction - critical for retail security certifications. 176 bytes of SRAM buffer keystrokes between interrupts, and the 8 MHz core keeps response latency under 50 ms.
Được đề xuất
Medical Device Front-End Display
Non-critical medical front-ends such as blood-pressure monitors, glucose meters, and pulse-oximeter displays use a segment LCD plus a few buttons. The PIC16C924-08/PT's integrated 32-segment driver renders systolic/diastolic readings directly on the LCD glass, while the 5-channel ADC digitizes the pressure transducer or photodiode signal. The PIC16C9xx family's deterministic instruction timing simplifies FDA 510(k) firmware validation, and the OTP memory prevents post-market firmware tampering that could alter calibration. Operating from 3 to 6 V lets the device run directly from 2xAA cells via a boost converter.
Được đề xuất
Instrument Cluster Readout (Non-Safety)
For low-speed vehicle or industrial equipment instrument clusters that need an alphanumeric LCD readout plus push-buttons (non-safety functions such as trip-computer, hours-of-operation, fuel-economy displays), the PIC16C924-08/PT fits naturally. The 32-segment LCD driver accommodates 8-digit 7-segment plus icons for mode indication, while the 5-channel ADC reads the fuel-level sender and battery voltage. The automotive-grade variant PIC16C924-08I/PT extends temperature range to -40C to +85C for under-dash mounting. The USART connects to a gateway ECU for OBD-II data passthrough.
Được đề xuất
Educational 8-Bit Microcontroller Platform
Universities and training centers continue to teach 8-bit RISC fundamentals on PIC microcontrollers, and the PIC16C924-08/PT's integrated LCD driver, ADC, USART, and 52 I/O pins make it a one-chip lab platform. Students learn instruction pipelining, interrupt-driven LCD refresh, and keypad scanning on a single 64-pin TQFP that exposes every peripheral pin. The OTP variant encourages disciplined firmware development because every programming cycle consumes a part - mirroring real production engineering trade-offs where code-lock security matters more than reprogrammability.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C924-08/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC16C924-08I/PT | PIC16C924T-08/PT | PIC16C924-04/PT | PIC16C924-04I/PT | PIC16F924-I/PT | PIC16C923-08/PT |
|---|---|---|---|---|---|---|---|
| Package | 64-pin TQFP (PT) 10x10 mm | 64-pin TQFP (PT) 10x10 mm | 64-pin TQFP (PT) 10x10 mm | 64-pin TQFP (PT) 10x10 mm | 64-pin TQFP (PT) 10x10 mm | 64-pin TQFP (PT) 10x10 mm | 64-pin TQFP (PT) 10x10 mm |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Max Oscillator Frequency | 8 MHz | 8 MHz | 8 MHz | 4 MHz | 4 MHz | 8 MHz (20 MHz Flash) | 8 MHz |
| Program Memory | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB Flash | 7 KB OTP |
| Operating Temperature | 0C to +70C (Commercial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) |
| LCD Driver | 32 seg x 4 com | 32 seg x 4 com | 32 seg x 4 com | 32 seg x 4 com | 32 seg x 4 com | 32 seg x 4 com | 32 seg x 4 com |
| ADC | 5-ch x 8-bit | 5-ch x 8-bit | 5-ch x 8-bit | 5-ch x 8-bit | 5-ch x 8-bit | 5-ch x 8-bit | None |
| Lifecycle / Memory Type | Active / OTP | Active / OTP | Active / OTP | Active / OTP | Active / OTP | Active / Flash | Active / OTP |
Bảo phân biệt quan trọng
- Industrial temperature variant available with identical pinout (vsPIC16C924-08I/PT)
- Integrated 5-channel 8-bit ADC reduces BOM (vsPIC16C923-08/PT)
- OTP code-lock protects proprietary firmware (vsPIC16F924-I/PT)
Ghi chú thiết kế
The PIC16C924-08/PT operates from a single 3.0 V to 6.0 V VDD with a separate AVdd/AVss pair for the ADC. Place a 0.1 uF decoupling capacitor within 5 mm of each VDD pin and a 10 uF bulk capacitor at the board input. AVdd should be tied to VDD through a small ferrite bead or 10 ohm resistor with its own 0.1 uF + 10 uF decoupling to keep ADC reference noise below 1 LSB. The internal LCD charge pump can source up to 5 mA - budget this when calculating total VDD current at low supply voltages where regulator dropout becomes significant.
Do not assume 100 % code-compatibility between PIC16C924 and PIC16F924 - register names, interrupt vectors, and Flash programming timing differ. New designs should target PIC16F924-I/PT directly to gain Flash reprogrammability, ICSP debugging, and nanoWatt power-saving modes. When migrating an existing C924 firmware to F924, recompile against the new header file and re-validate interrupt latency because the Flash wait-state timing differs from OTP. Brown-out detect voltage must be re-configured if the application requires a different BOD threshold than the C924 default.
Route the LCD segment and common pins on an inner layer with a ground plane on the opposite side to minimize coupling. Keep segment traces short (under 50 mm) and matched in length within a group to avoid ghosting. Place the VLCD bypass capacitor within 5 mm of the VLCD pin, and use the recommended 1 uF X7R ceramic. For 64-pin TQFP layout, allocate a continuous ground plane under the package and stitch vias on a 5 mm grid to suppress radiated EMI from the charge-pump switching edges, which can couple into analog ADC channels.
Thông tin tuân thủ
RoHS and lead-free compliance inferred from /PT suffix and Microchip's product environmental compliance program. AEC-Q100 not applicable for commercial-grade MCU. Halogen-free status not stated in verified web data - defaulting to 'unknown'.
