PIC16LC924-04I/PT - 8-Bit 4MHz LCD MCU 7KB OTP TQFP-64 | Microchip
MPN: PIC16LC924-04I/PT ✗ Cuối đờiPIC16LC924-04I/PT Tóm tắt
An 8-bit microcontroller (MCU) is a small, single-chip computer built around an 8-bit data path and a Harvard-style RISC core. It belongs to the broader hierarchy: microcontroller -> embedded controller -> microprocessor-based system -> semiconductor IC. Within Microchip's portfolio, this part sits in the PIC16 mid-range family, the company's classic workhorse line optimized for low-cost, low-power, deterministic embedded control with integrated peripherals such as the on-chip LCD driver that distinguishes the 'LC92x series from generic PIC16C cousins.
Key features include 4 MHz maximum operating frequency, 500 ns single-cycle instruction execution (except branches which take two cycles), 176 x 8 general-purpose SRAM registers, 13-channel 8-bit A/D converter, integrated LCD driver supporting up to 192 segments, two 8-bit timers plus one 16-bit timer, UART/SPI/I2C (SSP) serial port, and an industrial -40C to +85C operating temperature range that gives the part its 'I' industrial grade suffix. The OTP program memory allows one-time custom firmware programming for low-volume production.
The device uses Microchip's RISC architecture with a 14-bit instruction word and 8-bit data bus, allowing compact code density and predictable interrupt latency. Its LCD driver includes charge pump option and software-contrast control, reducing external component BOM cost. Brown-out reset, watchdog timer, and an in-circuit serial programming (ICSP) interface round out the on-chip feature set.
Typical applications include direct-drive LCD user interfaces in industrial control panels, medical instruments (blood-glucose meters, infusion pumps), consumer white goods (washing machines, microwave ovens), automotive instrument clusters, and battery-powered metering equipment. The integrated segment LCD driver eliminates external LCD controller chips, saving board area and BOM cost.
When designing with this part, account for OTP memory's single-program nature - any firmware change requires a new chip - and ensure LCD bias network components match the chosen multiplex mode (static, 1/2, 1/3, or 1/4 duty).
This page synthesizes Microchip datasheet specifications, current distributor pricing as of 2026-09-22, drop-in compatible alternatives, and practical design notes for engineers evaluating the PIC16LC924-04I/PT for embedded designs.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC924-04I/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 PIC16LC924-04I/PT (cùng hình factor và footprint) — khác nhau ở Package, LCD Driver, Program Memory Size, Timers, RAM Size.
PIC16LC924-04/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC924T-04I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LC924-04I/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC924T-04I/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC924T-04/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LC924-04I/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC16C / PIC mid-range RISC, 8-bit data bus, 14-bit instruction word |
| Program Memory Type | OTP (One-Time-Programmable) EPROM |
| Program Memory Size | 7 KB (4K x 14 words) |
| RAM Size | 176 bytes |
| Tần số xung maksimum | 4 MHz |
| Instruction Cycle Time | 500 ns (single-cycle except branches which are 2-cycle) |
| Number of I/O Pins | 52 |
| Hộp | 64-pin TQFP (10x10 mm), PT suffix |
| Operating Voltage | 3.3 V / 5 V dual range |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial, 'I' suffix) |
| A/D Converter | 8-bit, up to 13 channels |
| LCD Driver | Integrated, up to 192 segments, software-contrast control |
| Timers | Two 8-bit + one 16-bit (TMR0/TMR1/TMR2) |
| Serial Interfaces | UART (SCI), SPI, I2C (via SSP module) |
| Number of Instructions | 35 single-word instructions |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (per JEDEC J-STD-020, reflow 260 C peak) |
Cấu hình chân PIC16LC924-04I/PT
| Chân 1 | RA0/AN0 — Port A bit 0 / Analog input channel 0 |
| Chân 2 | RA1/AN1 — Port A bit 1 / Analog input channel 1 |
| Chân 3 | RA2/AN2/VREF- — Port A bit 2 / Analog input / A/D negative reference |
| Chân 4 | RA3/AN3/VREF+ — Port A bit 3 / Analog input / A/D positive reference |
| Chân 5 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Chân 6 | RA5/AN4/SS — Port A bit 5 / Analog input / SPI slave select |
| Chân 7 | AVSS — Analog ground |
| Chân 8 | AVDD — Analog positive supply |
| Chân 9 | OSC1/CLKIN — Crystal oscillator input / external clock |
| Chân 10 | OSC2/CLKOUT — Crystal oscillator output / clock out |
| Chân 11 | MCLR/VPP — Master clear reset / programming voltage |
| Chân 12 | SEG0 — LCD segment output 0 |
| Chân 13 | SEG1 — LCD segment output 1 |
| Chân 14 | SEG2 — LCD segment output 2 |
| Chân 15 | SEG3 — LCD segment output 3 |
| Chân 16 | SEG4 — LCD segment output 4 |
| Chân 17 | SEG5 — LCD segment output 5 |
| Chân 18 | SEG6 — LCD segment output 6 |
| Chân 19 | SEG7 — LCD segment output 7 |
| Chân 20 | SEG8 — LCD segment output 8 |
| Chân 21 | SEG9 — LCD segment output 9 |
| Chân 22 | SEG10 — LCD segment output 10 |
| Chân 23 | SEG11 — LCD segment output 11 |
| Chân 24 | SEG12 — LCD segment output 12 |
| Chân 25 | SEG13 — LCD segment output 13 |
| Chân 26 | SEG14 — LCD segment output 14 |
| Chân 27 | SEG15 — LCD segment output 15 |
| Chân 28 | SEG16 — LCD segment output 16 |
| Chân 29 | SEG17 — LCD segment output 17 |
| Chân 30 | SEG18 — LCD segment output 18 |
| Chân 31 | SEG19 — LCD segment output 19 |
| Chân 32 | SEG20 — LCD segment output 20 |
| Chân 33 | SEG21 — LCD segment output 21 |
| Chân 34 | SEG22 — LCD segment output 22 |
| Chân 35 | SEG23 — LCD segment output 23 |
| Chân 36 | SEG24 — LCD segment output 24 |
| Chân 37 | SEG25 — LCD segment output 25 |
| Chân 38 | SEG26 — LCD segment output 26 |
| Chân 39 | SEG27 — LCD segment output 27 |
| Chân 40 | SEG28 — LCD segment output 28 |
| Chân 41 | SEG29 — LCD segment output 29 |
| Chân 42 | SEG30 — LCD segment output 30 |
| Chân 43 | SEG31 — LCD segment output 31 |
| Chân 44 | COM0 — LCD common output 0 (backplane) |
| Chân 45 | COM1 — LCD common output 1 (backplane) |
| Chân 46 | COM2 — LCD common output 2 (backplane) |
| Chân 47 | COM3 — LCD common output 3 (backplane) |
| Chân 48 | RB0/INT — Port B bit 0 / external interrupt |
| Chân 49 | RB1 — Port B bit 1 |
| Chân 50 | RB2 — Port B bit 2 |
| Chân 51 | RB3 — Port B bit 3 |
| Chân 52 | RB4 — Port B bit 4 |
| Chân 53 | RB5 — Port B bit 5 |
| Chân 54 | RB6/PGC — Port B bit 6 / ICSP clock |
| Chân 55 | RB7/PGD — Port B bit 7 / ICSP data |
| Chân 56 | RC0 — Port C bit 0 |
| Chân 57 | RC1 — Port C bit 1 |
| Chân 58 | RC2 — Port C bit 2 |
| Chân 59 | RC3 — Port C bit 3 |
| Chân 60 | RC4 — Port C bit 4 |
| Chân 61 | RC5 — Port C bit 5 |
| Chân 62 | RC6/TX/CK — Port C bit 6 / UART TX / I2C clock |
| Chân 63 | RC7/RX/DT — Port C bit 7 / UART RX / I2C data |
| Chân 64 | VDD — Digital positive supply |
Ứng dụng tiêu biểu
PIC16LC924-04I/PT phù hợp cho 6 Áp dụngs: Industrial Control Panel with Segment LCD, Medical Metering and Diagnostic Devices, Consumer White Goods - Washing Machines, Microwaves, Automotive Instrument Cluster Auxiliary Display, Battery-Powered Metering and Data Loggers, Home Appliance User Interface Modules.
Industrial Control Panel with Segment LCD
The PIC16LC924-04I/PT fits industrial control panels because it combines an 8-bit RISC core running at 4 MHz with an integrated segment LCD driver supporting up to 192 segments, eliminating the need for a separate LCD controller IC. With 52 I/O pins and 13-channel 8-bit A/D, it can read multiple analog sensors (temperature, pressure, level) while directly driving a 4-mux LCD for HMI feedback. The -40 C to +85 C industrial temperature grade and 5 V tolerance match the harsh 24 V-rail-derived power environments typical of factory panels.
Được đề xuất
Medical Metering and Diagnostic Devices
Blood-glucose meters, infusion pumps, and patient monitors benefit from the PIC16LC924-04I/PT's integrated LCD driver, low-power CMOS design, and OTP code security that prevents external firmware read-back on calibrated medical algorithms. The 176-byte SRAM and 7 KB OTP accommodate small C-coded glucose curve lookup tables and ADC pipelines. The 8-bit A/D reads strip-impedance or optical sensors directly, while the UART/SPI interfaces export data to a host PC or Bluetooth module for telemedicine logging.
Được đề xuất
Consumer White Goods - Washing Machines, Microwaves
The PIC16LC924-04I/PT suits washing machine, dishwasher, and microwave oven controllers because the on-chip LCD driver reduces BOM cost versus discrete LCD ASIC solutions, and the 52 I/O pins handle keypad scanning, relay drivers, motor triac control, and buzzer feedback without external muxes. OTP program memory locks the appliance firmware at production, protecting proprietary cycle algorithms. The 4 MHz instruction rate is more than sufficient for time-slice motor-control loops at 50/60 Hz line frequency.
Được đề xuất
Automotive Instrument Cluster Auxiliary Display
Auxiliary automotive displays such as trip-computer readouts, climate-control panels, and aftermarket gauge clusters can use the PIC16LC924-04I/PT for its robust segment-LCD driver and automotive-suitable operating voltage range. The UART and SSP peripherals talk to a main CAN-equipped ECU for vehicle data while the LCD shows driver-facing information. Note that AEC-Q100 qualification status for this specific MPN is [DATA_NEEDED] - automotive designs should consult Microchip automotive-grade portfolio for fully qualified alternatives if required.
Được đề xuất
Battery-Powered Metering and Data Loggers
Battery-powered meters such as portable energy monitors, parking meters, and remote data loggers use the PIC16LC924-04I/PT for its low-power CMOS design and ability to drive segment LCDs directly from a 3 V lithium cell without an external charge pump. The 4 MHz clock allows fast sensor reads while sleep-mode current (typically low microamps) preserves battery life across years of deployment. UART output is convenient for periodic IrDA or Bluetooth dumps to a service technician's handheld reader.
Được đề xuất
Home Appliance User Interface Modules
Detachable or secondary UI modules in HVAC thermostats, smart-refrigerator panels, and coffee-machine front panels use the PIC16LC924-04I/PT because the integrated LCD driver plus capacitive or resistive touch-button scanning on the 52 I/O pins create a low-cost HMI subsystem that communicates with a host processor via UART or SPI. OTP program memory secures the manufacturer-specific button mapping and LCD custom-character fonts. The 10x10 mm TQFP footprint fits behind the LCD glass with no extra components.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC924-04I/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 | PIC16LC924-04/PT | PIC16LC924T-04I/PT | PIC16LC924-04I/L | PIC16LC924T-04I/L | PIC16LC924T-04/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-pin TQFP (10x10 mm) | 64-pin TQFP (10x10 mm) - same | 64-pin TQFP (10x10 mm) - same | 68-pin PLCC - different package | 68-pin PLCC - different package | 64-pin TQFP (10x10 mm) - same |
| Maximum Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Program Memory (OTP) | 7 KB (4K x 14) | 7 KB (4K x 14) | 7 KB (4K x 14) | 7 KB (4K x 14) | 7 KB (4K x 14) | 7 KB (4K x 14) |
| RAM | 176 bytes | 176 bytes | 176 bytes | 176 bytes | 176 bytes | 176 bytes |
| Temperature Grade | -40 C to +85 C (Industrial) | 0 C to +70 C (Commercial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | 0 C to +70 C (Commercial) |
| LCD Driver | Integrated, 192 segments | Integrated, 192 segments | Integrated, 192 segments | Integrated, 192 segments | Integrated, 192 segments | Integrated, 192 segments |
| A/D Channels | 13 x 8-bit | 13 x 8-bit | 13 x 8-bit | 13 x 8-bit | 13 x 8-bit | 13 x 8-bit |
| Approx. Unit Price (qty 1) | $4.12 | $3.85 | $4.18 | $4.50 | $4.55 | $3.95 |
Bảo phân biệt quan trọng
- Integrated segment LCD driver eliminates external controller IC (vsPIC16F877A (no on-chip LCD))
- 13-channel 8-bit A/D directly on-chip (vsPIC16F84A (no A/D))
- Wide 3.0 V to 6.0 V supply tolerance supports battery and 5 V systems (vsPIC16C924 (5 V only))
Ghi chú thiết kế
The PIC16LC924-04I/PT operates from 3.0 V to 6.0 V and supports both 3.3 V and 5 V rails. Decouple VDD and AVDD with separate 100 nF ceramic capacitors placed within 5 mm of each supply pin; share ground at a single star point under the IC. For battery applications, use MCP1700 or similar low-Iq LDO with <2 uA quiescent current to maximize standby time. Estimated: with LCD driver disabled and MCU in sleep, total quiescent current is in the low-microamp range per Microchip datasheet.
Route the TQFP-64 (10x10 mm) package on a 4-layer PCB with continuous ground plane beneath the IC to minimize LCD segment noise coupling. Keep the LCD segment traces short and away from the switching power section. Place the 32.768 kHz crystal (if used for Timer1) within 5 mm of OSC1/OSC2 with guard ground. Per the Microchip datasheet, ensure MCLR has a 10 kohm pull-up and a 100 nF cap to ground for clean reset behavior during power-up.
OTP memory is one-time-programmable - any firmware bug requires a brand-new chip, so always prototype on a flash equivalent (PIC16F946 or PIC16F917 with the same LCD peripheral set) before committing to PIC16LC924-04I/PT production orders. Configure the LCD charge pump off when running from a regulated external bias supply, and verify the bias-resistor network matches the chosen COM/SEG multiplex duty (static, 1/2, 1/3, or 1/4). Brown-out reset (BOR) should remain enabled for industrial applications to prevent code-execution errors during supply dips.
Thông tin tuân thủ
RoHS/REACH compliance status not explicitly listed in the retrieved distributor data; verification recommended against the latest Microchip material declaration. Lead-free finish confirmed by 'Pb-free' suffix in package code. AEC-Q100 not applicable - this part is in NRND status and not in Microchip's automotive-qualified portfolio; for automotive applications, dsPIC33CK128MC106-I/PT or similar AEC-Q100 qualified parts should be considered.
