PIC16C924T-04I/L - 8-Bit 4MHz OTP MCU with LCD Driver, 68-PLCC | Microchip
MPN: PIC16C924T-04I/L ✗ Cuối đờiPIC16C924T-04I/L Tóm tắt
What is an 8-bit OTP microcontroller? An 8-bit OTP (One-Time Programmable) MCU is a microcontroller whose program memory can be written only once after manufacture, making it cost-optimized for high-volume, fixed-code applications where firmware revision is unnecessary. OTP MCUs sit inside the broader 8-bit microcontroller hierarchy, alongside Flash- and ROM-based variants, and are widely used in consumer appliances, industrial controllers, metering, and display-driven human-machine interface (HMI) products. The LCD driver integration makes PIC16C924 particularly suited to systems where alphanumeric segment displays are required without external driver ICs.
Key features include an 8-level hardware stack, 14-bit instruction word, Harvard architecture with separate program and data buses, on-chip LCD driver supporting up to 64 segments, 52 I/O pins, and an industrial operating temperature range of -40C to +85C. The 68-pin PLCC package supports through-hole or socket mounting, easing prototype rework and field replacement in legacy designs. The /L suffix indicates the PLCC package, while 'T' denotes tape and reel orientation, and '04I' identifies the 4 MHz industrial-temperature grade.
Typical applications include industrial control panels, alphanumeric segment-LCD consumer appliances, point-of-sale terminals, instrumentation front panels, medical device displays, and automotive dashboard clusters. The integrated LCD driver eliminates the need for an external segment driver, reducing BOM cost and PCB area.
When designing with this part, note that OTP memory cannot be reprogrammed in-circuit. For prototype development, consider the PIC16F926 equivalent or the PIC16C924 windowed JW variant, then transition to PIC16C924T-04I/L for production. Always verify maximum supply voltage (5.5 V) and oscillator configuration in the manufacturer datasheet.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. Data sources include DigiKey, Microchip, Heisener, and MicrochipUSA.
Bộ thay thế dễ dàng lắp đặt cho PIC16C924T-04I/L — 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 PIC16C924T-04I/L (cùng hình factor và footprint) — khác nhau ở Package, LCD Driver, Operating Temperature, Timers, Instruction Cycle Time.
PIC16C924-04I/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C924T-04/L
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C924T-08I/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C923T-04I/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C923T-04/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C924T-04I/L Tỷ lệ tối đa & tính chất điện
| Core | 8-bit PIC16 RISC |
| Instruction Set | 14-bit, 35 instructions |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 7 KB (4K x 14) |
| RAM | 176 bytes |
| Data EEPROM | Not present |
| Maximum CPU Frequency | 4 MHz |
| I/O Pins | 52 |
| Integrated LCD Driver | Yes (up to 64 segments) |
| A/D Converter | None |
| Timers | 3 (Timer0, Timer1, Timer2) |
| Khoảng nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Hộp | 68-PLCC (J-Lead), 24.23 x 24.23 mm |
| Kiểu lắp đặt | Surface Mount (PLCC socket compatible) |
| Packaging Style | Tape and Reel |
Hướng dẫn cấu hình chân PIC16C924T-04I/L 68-plcc (j-lead), 24.23 x 24.23 mm
Cấu hình chân cho PIC16C924T-04I/L (68-plcc (j-lead), 24.23 x 24.23 mm gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho PIC16C924T-04I/L.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
PIC16C924T-04I/L phù hợp cho 6 Áp dụngs: Industrial Control Panel with Segment LCD, Consumer Appliance with LCD HMI, Point-of-Sale Terminal Display Controller, Medical Device Front Panel Display, Instrumentation Front Panel with Numeric LCD, Automotive Dashboard Cluster (Legacy).
Industrial Control Panel with Segment LCD
The PIC16C924T-04I/L is purpose-built for industrial control panels requiring on-board alphanumeric segment-LCD displays. Its integrated segment LCD driver supports up to 64 segments, eliminating an external LCD driver IC and reducing BOM count by 30-40%. The 52 I/O pins connect directly to keypads, encoders, and relay drivers, while the 4 MHz core is sufficient for menu-driven HMI firmware with update rates of 10-30 Hz. Compared with discrete logic + external LCD driver solutions, the single-chip approach shrinks PCB area and simplifies EMC compliance. Industrial-grade -40C to +85C operation covers unconditioned factory environments without thermal conditioning.
Được đề xuất
Consumer Appliance with LCD HMI
Microwave ovens, washing machines, and air conditioners benefit from the PIC16C924T-04I/L's on-chip LCD driver combined with 7 KB of OTP program memory. Household appliances run fixed firmware, so OTP is cost-optimal versus Flash. The 4 MHz CPU delivers 1 MIPS, adequate for button-debounce routines, motor-control timing, and character-based LCD rendering. The 176-byte RAM supports short display buffers and stack depth for state-machine code, while the industrial -40C to +85C temperature range handles indoor thermal stress. The 68-PLCC socketed package simplifies service and field replacement in long-lifecycle appliance designs.
Được đề xuất
Point-of-Sale Terminal Display Controller
The PIC16C924T-04I/L can drive the customer-facing segment-LCD display of a point-of-sale terminal, offloading display refresh from the main terminal processor. With 64 LCD segments available, two-line 16-character displays are easily supported. The 52 I/O pins handle keypad scanning, backlight PWM (via Timer2), and serial link to the main processor. The 4 MHz CPU maintains display refresh at 50-60 Hz without flicker, while OTP memory prevents accidental firmware tampering in retail environments. The 68-PLCC package fits the legacy POS enclosure design with proven reliability.
Được đề xuất
Medical Device Front Panel Display
The PIC16C924T-04I/L serves in medical device front panels where regulatory approvals favor long-lifecycle, stable components. The OTP memory locks firmware to prevent unauthorized modification - critical for FDA-cleared devices. The integrated segment LCD driver displays vital numeric readings without external ICs, while 52 I/O pins interface with membrane keypads and indicator LEDs. Industrial -40C to +85C operation covers clinical and laboratory environments. The 68-PLCC package is socketed for serviceability, important in medical equipment with 7-10 year support horizons.
Được đề xuất
Instrumentation Front Panel with Numeric LCD
Digital multimeters, oscilloscopes, and laboratory instruments benefit from the PIC16C924T-04I/L's integrated segment-LCD controller for numeric displays. The 4 MHz CPU runs display multiplex at 60-100 Hz without flicker, and the 7 KB OTP stores fixed measurement-mode firmware. With 52 I/O pins, the chip interfaces to rotary encoders, function keys, range-selection relays, and serial/RS-232 ports. The 68-PLCC package is socketed for easy factory calibration and field service - a key advantage over QFP-only modern Flash MCUs in test-and-measurement instrumentation.
Được đề xuất
Automotive Dashboard Cluster (Legacy)
Legacy automotive cluster designs use the PIC16C924T-04I/L to drive odometer, trip-meter, and segment-LCD gauge displays. The integrated LCD controller directly drives up to 64 segments - ideal for digit displays and warning icons. With -40C to +85C industrial temperature range, the part operates across cabin thermal conditions. The 52 I/O pins connect to switches, sensor inputs, and stepper-motor drivers for analog gauges. The 68-PLCC socketed package allows factory programming and field service. Note: this part is not AEC-Q100 qualified - use PIC16F946 or PIC18F family for new automotive designs.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C924T-04I/L — 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 | PIC16C924-04I/L | PIC16C924T-04/L | PIC16C924T-08I/L | PIC16C923T-04I/L | PIC16C923T-04/L |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 68-PLCC (J-Lead) | 68-PLCC (J-Lead) - same | 68-PLCC (J-Lead) - same | 68-PLCC (J-Lead) - same | 68-PLCC (J-Lead) - same | 68-PLCC (J-Lead) - same |
| Core / Architecture | 8-bit PIC16 RISC | 8-bit PIC16 RISC - same | 8-bit PIC16 RISC - same | 8-bit PIC16 RISC - same | 8-bit PIC16 RISC - same | 8-bit PIC16 RISC - same |
| Maximum CPU Frequency | 4 MHz | 4 MHz - same | 4 MHz - same | 8 MHz (+100%) | 4 MHz - same | 4 MHz - same |
| Program Memory Type | OTP | OTP - same | OTP - same | OTP - same | OTP - same | OTP - same |
| Integrated LCD Driver | Yes | Yes - same | Yes - same | Yes - same | Yes | Yes |
| Operating Temperature Range | -40C to +85C (Industrial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) |
| Packaging Style | Tape & Reel (T suffix) | Tube | Tape & Reel | Tape & Reel | Tape & Reel | Tape & Reel |
Bảo phân biệt quan trọng
- Tape & Reel packaging for high-volume SMT assembly (vsPIC16C924-04I/L)
- Industrial temperature grade -40C to +85C (vsPIC16C924T-04/L)
- Same 4 MHz CPU as legacy baseline (vsPIC16C924T-08I/L)
- PIC16C924 family with 7 KB OTP (vsPIC16C923T-04I/L)
Ghi chú thiết kế
OTP (One-Time Programmable) memory cannot be erased or rewritten. Once programmed, the device is locked permanently. For prototype development, use the windowed ceramic PIC16C924/JW variant with UV erasure, or migrate to the Flash-based PIC16F946-I/PT. Do not use OTP parts for design verification - firmware bugs become permanent and require new parts.
The PIC16C924T-04I/L operates from a single 5 V supply (typical) with internal brown-out and power-on reset. Decouple Vdd with a 100 nF ceramic capacitor placed within 5 mm of the supply pin, plus a 10 uF bulk capacitor on the board. The LCD driver charge pump (if used) draws additional current - budget 5-10 mA extra for segment-heavy displays.
The 68-pin PLCC (J-Lead) package is socketed-friendly; use a 68-pin PLCC socket to allow field replacement and rework. For SMT assembly, ensure the PCB land pattern follows JEDEC MO-047 for PLCC-68 with 1.27 mm pitch. Keep oscillator traces short (under 10 mm) and surround the crystal with a ground guard ring to suppress EMI from the 4 MHz fundamental.
The PIC16C924T-04I/L is marked obsolete per DigiKey distributor data and the 1997 datasheet publication date. For new product designs targeting 5-10 year production, select the Flash-based PIC16F946-I/PT (TQFP-64) or PIC16F926 (TQFP-64) instead. They share the same 8-bit PIC core architecture with similar peripheral sets, easing firmware migration despite package change.
Thông tin tuân thủ
PIC16C924 family was released in the 1990s (datasheet 30292D, 1997); RoHS, REACH, and lead-free status not explicitly stated in surveyed distributor data. Not AEC-Q100 qualified. Contact Microchip for the latest compliance certificate before designing into a regulated product.
