PIC16C924T-08I/L - 8-Bit 8MHz OTP MCU w/ LCD Driver | Microchip
MPN: PIC16C924T-08I/L ✗ Cuối đờiPIC16C924T-08I/L Tóm tắt
A microcontroller (MCU) is a single-chip computer containing a CPU, memory, and peripherals on one die. The PIC16C family sits within the broader 8-bit microcontroller taxonomy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. OTP (One-Time Programmable) variants like this one are programmed once at production or in-circuit by the developer and cannot be erased, which lowers unit cost relative to flash-based parts for high-volume, fixed-code products such as consumer appliances and metering.
Key features include 35 single-word instructions (all single-cycle except branches), 8 general-purpose SRAM registers, an integrated LCD driver for glass-direct segment displays, and a 25-pin programmable I/O count on the PLCC package. The wide operating range of -40C to +85C (industrial grade, indicated by the -I suffix) and 8 MHz oscillator support make the device suitable for mains-powered instruments that need both human-readable displays and reliable embedded control.
The PIC16C924 uses a Harvard RISC architecture with separate program and data buses, enabling instruction fetch and execute in a single cycle for most opcodes. The LCD driver block generates segment and common waveforms internally, which removes the BOM cost and PCB area of an external HT1621-class driver and simplifies the BOM to a microcontroller plus bias resistors. The 'T' suffix indicates Tape & Reel packaging; the '/L' suffix indicates the 68-PLCC form factor.
Typical applications include white-goods and appliance front-panel displays, industrial control panels with integrated glass, weighing scales, water/gas meter readouts, point-of-sale terminals, and HVAC thermostats. The integrated LCD driver is the decisive feature in these uses - engineers avoid the firmware complexity and additional cost of emulating segment waveforms in software on a generic MCU.
When designing with the PIC16C924, ensure the OTP programming step is integrated into your production flow, since OTP cannot be re-written and any firmware bug becomes a hardware rework. Plan bias resistor values for the target LCD glass contrast curve during schematic design, and verify in-circuit programming timing against the 8 MHz instruction rate if you use the ICSP interface.
This page synthesizes distributor pricing, drop-in alternatives from the PIC16C family and Microchip flash equivalents, and practical design notes that are not collated in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC16C924T-08I/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-08I/L (cùng hình factor và footprint) — khác nhau ở Package, LCD Driver, Program Memory Type, ADC, Timers.
PIC16C924-08/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C924-08/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C924-04I/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F914-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F917-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C924/CL
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C924T-08I/L Tỷ lệ tối đa & tính chất điện
| Core | PIC 8-bit RISC |
| Architecture | Harvard |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 7 KB (4K x 14) |
| Instruction Set Size | 35 single-word instructions |
| Instruction Cycle | 500 ns |
| CPU Speed | 8 MHz |
| Operating Voltage | 4 V to 6 V |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| I/O Pins | 25 (programmable) |
| LCD Driver | Integrated (segment/com) |
| Hộp | 68-PLCC (24.23 x 24.23 mm) |
| Kiểu lắp đặt | Surface Mount (PLCC J-Lead) |
| Temperature Grade | Industrial |
Cấu hình chân PIC16C924T-08I/L
| Chân 1 | RA0/AN0 — Port A bit 0 / Analog input 0 |
| Chân 2 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| Chân 3 | RA2/AN2 — Port A bit 2 / Analog input 2 |
| Chân 4 | RA3/AN3/VREF — Port A bit 3 / Analog input 3 / Voltage reference |
| Chân 5 | RA4/T0CKI — Port A bit 4 / Timer 0 clock input |
| Chân 6 | RA5/AN4/SS — Port A bit 5 / Analog input 4 / SPI slave select |
| Chân 7 | OSC1/CLKIN — Oscillator input / external clock |
| Chân 8 | OSC2/CLKOUT — Oscillator output / clock out |
| Chân 9 | VSS — Ground reference |
| Chân 10 | VDD — Positive supply (4 V to 6 V) |
| Chân 11 | VLCD — LCD supply voltage |
| Chân 12 | COM0 — LCD common output 0 |
| Chân 13 | COM1 — LCD common output 1 |
| Chân 14 | COM2 — LCD common output 2 |
| Chân 15 | COM3 — LCD common output 3 |
| Chân 16 | SEG0 — LCD segment output 0 |
| Chân 17 | SEG1 — LCD segment output 1 |
| Chân 18 | SEG2 — LCD segment output 2 |
| Chân 19 | SEG3 — LCD segment output 3 |
| Chân 20 | SEG4 — LCD segment output 4 |
| Chân 21 | SEG5 — LCD segment output 5 |
| Chân 22 | SEG6 — LCD segment output 6 |
| Chân 23 | SEG7 — LCD segment output 7 |
| Chân 24 | SEG8 — LCD segment output 8 |
| Chân 25 | SEG9 — LCD segment output 9 |
| Chân 26 | SEG10 — LCD segment output 10 |
| Chân 27 | SEG11 — LCD segment output 11 |
| Chân 28 | SEG12 — LCD segment output 12 |
| Chân 29 | SEG13 — LCD segment output 13 |
| Chân 30 | SEG14 — LCD segment output 14 |
| Chân 31 | SEG15 — LCD segment output 15 |
| Chân 32 | SEG16 — LCD segment output 16 |
| Chân 33 | SEG17 — LCD segment output 17 |
| Chân 34 | SEG18 — LCD segment output 18 |
| Chân 35 | SEG19 — LCD segment output 19 |
| Chân 36 | SEG20 — LCD segment output 20 |
| Chân 37 | SEG21 — LCD segment output 21 |
| Chân 38 | SEG22 — LCD segment output 22 |
| Chân 39 | SEG23 — LCD segment output 23 |
| Chân 40 | RB0/INT — Port B bit 0 / External interrupt |
| Chân 41 | RB1 — Port B bit 1 |
| Chân 42 | RB2 — Port B bit 2 |
| Chân 43 | RB3 — Port B bit 3 |
| Chân 44 | RB4 — Port B bit 4 |
| Chân 45 | RB5 — Port B bit 5 |
| Chân 46 | RB6 — Port B bit 6 |
| Chân 47 | RB7 — Port B bit 7 |
| Chân 48 | RC0 — Port C bit 0 |
| Chân 49 | RC1 — Port C bit 1 |
| Chân 50 | RC2 — Port C bit 2 |
| Chân 51 | RC3 — Port C bit 3 |
| Chân 52 | RC4 — Port C bit 4 |
| Chân 53 | RC5 — Port C bit 5 |
| Chân 54 | RC6 — Port C bit 6 |
| Chân 55 | RC7 — Port C bit 7 |
| Chân 56 | RD0 — Port D bit 0 |
| Chân 57 | RD1 — Port D bit 1 |
| Chân 58 | RD2 — Port D bit 2 |
| Chân 59 | RD3 — Port D bit 3 |
| Chân 60 | RD4 — Port D bit 4 |
| Chân 61 | RD5 — Port D bit 5 |
| Chân 62 | RD6 — Port D bit 6 |
| Chân 63 | RD7 — Port D bit 7 |
| Chân 64 | RE0/RD — Port E bit 0 / LCD read control |
| Chân 65 | RE1/WR — Port E bit 1 / LCD write control |
| Chân 66 | RE2/CS — Port E bit 2 / LCD chip select |
| Chân 67 | MCLR/VPP — Master clear reset / programming voltage |
| Chân 68 | VSS — Ground reference |
Ứng dụng tiêu biểu
PIC16C924T-08I/L phù hợp cho 6 Áp dụngs: White-Goods and Appliance Front-Panel Displays, Industrial Weighing Scales and Process Meters, Water, Gas, and Heat Meter Readouts, HVAC Thermostats and Climate-Control Panels, Point-of-Sale Terminals and Cash-Register Displays, Consumer Audio Equipment with Segment Displays.
White-Goods and Appliance Front-Panel Displays
The PIC16C924T-08I/L is well matched to washing-machine, dishwasher, and oven front-panel electronics because it integrates both an 8-bit RISC CPU and a segment LCD driver in a single 68-PLCC. With 25 programmable I/O pins it can scan a 4x4 keypad, read temperature sensors, and drive a 4-mux segment LCD glass directly without an external HT1621-class driver, removing one IC and several bias resistors from the BOM. The 4 V to 6 V supply range aligns with rectified mains designs, and the -40C to +85C industrial temperature grade covers unheated garage and laundry-room environments. Note that the OTP memory forces the firmware to be perfect before production; plan for a flash-based PIC16F914 migration path.
Được đề xuất
Industrial Weighing Scales and Process Meters
Bench and floor scales typically use a segment LCD to display weight, units, and status icons. The PIC16C924T-08I/L's integrated segment LCD driver can drive a 4-mux to 8-mux glass directly, freeing CPU bandwidth for load-cell ADC sampling, tare calculation, and EEPROM-backed calibration storage. The 8 MHz / 500 ns instruction execution gives enough MIPS for digital filtering at 50/60 Hz line rejection rates, and the 25-pin I/O count supports SPI or I2C load-cell interfaces plus RS-232 comms. The OTP constraint is acceptable because scale firmware is rarely revised once certified. Designers targeting new platforms should evaluate the PIC16F917 for its larger 14 KB flash headroom.
Được đề xuất
Water, Gas, and Heat Meter Readouts
Utility meters need a low-power MCU capable of driving a segment LCD that remains readable for years on a single battery. The PIC16C924T-08I/L supplies the LCD driver, a wide 4 V to 6 V supply for stepping down from a lithium battery stack, and enough I/O for pulse-counting flow sensors. The integrated LCD peripheral supports the typical 1/3 bias 1/3 duty cycle glass used in meter readouts, eliminating the external charge pump and segment driver. Industrial temperature grade matches outdoor meter enclosures. The OTP memory is well suited because meter firmware is frozen after type approval; no field upgrade is expected.
Được đề xuất
HVAC Thermostats and Climate-Control Panels
Wall-mounted thermostats combine a temperature sensor, a relay or triac driver, a segment LCD for setpoint/room temperature, and a keypad. The PIC16C924T-08I/L handles all of these in one PLCC-68 device: 8 MIPS for periodic sensor reads and PID computation, integrated LCD driver for the typical thermostat glass, and 25 I/O pins for keypad, triac gate, and serial debug. The 4 V to 6 V supply matches 24 VAC thermostats after rectification. Its OTP memory keeps unit cost low for high-volume HVAC OEM builds. New IoT-connected thermostat designs should consider the PIC16F914 plus a Wi-Fi module for cloud connectivity.
Được đề xuất
Point-of-Sale Terminals and Cash-Register Displays
Compact POS terminals and cashier displays need a low-cost MCU capable of driving a 7-segment or custom segment LCD for total/change readouts. The PIC16C924T-08I/L delivers 8 MHz CPU performance to handle keypad debouncing, serial communication with the host terminal, and LCD multiplexing in a single chip. The PLCC-68 package is large enough to support 25 I/O for keyboard matrix scanning plus a UART. OTP memory is acceptable because terminal firmware is rarely changed in the field. For new POS hardware, the PIC16F914-I/PT provides the same peripheral set with flash for late-stage feature additions.
Được đề xuất
Consumer Audio Equipment with Segment Displays
Stereo receivers, equalizers, and DJ mixers have historically used segment LCDs to show track number, volume, and EQ settings. The PIC16C924T-08I/L's integrated LCD driver handles the multi-mux segment glass without an external driver, while the 8 MIPS core services rotary encoder inputs, IR remote decoding, and front-panel button scanning. The PLCC-68 footprint is standard in this product segment, easing PCB reuse. OTP memory keeps unit cost low for consumer price points. New audio designs should migrate to the PIC16F917 for additional program memory to support modern DSP feature sets.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C924T-08I/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 | PIC16C924-08/L | PIC16C924-08/PT | PIC16C924-04I/L | PIC16F914-I/PT | PIC16F917-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 68-PLCC (24.23x24.23) | 68-PLCC - same | 64-TQFP - drop-in pinout | 68-PLCC - same | 64-TQFP - drop-in pinout | 64-TQFP - drop-in pinout |
| Program Memory | 7 KB OTP EPROM | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB Flash (re-programmable) | 14 KB Flash |
| CPU Speed | 8 MHz (500 ns) | 8 MHz | 8 MHz | 4 MHz | 20 MHz (20 MIPS) | 20 MHz (20 MIPS) |
| Operating Voltage | 4 V to 6 V | 4 V to 6 V | 4 V to 6 V | 4 V to 6 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| Temperature Grade | Industrial (-40C to +85C) | Commercial (0C to +70C) | Commercial (0C to +70C) | Industrial | Industrial | Industrial |
| LCD Driver | Integrated | Integrated | Integrated | Integrated | Integrated | Integrated |
| I/O Pins | 25 | 25 | 25 | 25 | 25 | 25 |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Active | Active |
Bảo phân biệt quan trọng
- Integrated segment LCD driver removes an external IC from the BOM (vsPIC16F84A (no LCD driver))
- Higher 8 MHz CPU speed than the 04 speed grade (vsPIC16C924-04I/L)
- Active flash alternative available for new designs (vsPIC16F914-I/PT)
Ghi chú thiết kế
The PIC16C924 uses OTP (one-time programmable) EPROM, which means a firmware bug cannot be patched in the field. Lock down the firmware revision with a full regression test on every hardware revision before programming parts. If there is any chance of late firmware changes, migrate to the flash-based PIC16F914 in the same PLCC footprint to avoid scrap on the production line.
The integrated LCD driver draws additional current during segment multiplexing. Estimated: at 4 V supply driving 4-mux glass with 25 segments lit, the LCD charge pump adds approximately 1 mA to the MCU core current. Ensure the 4 V to 6 V regulator can supply at least 25 mA of headroom for I/O switching plus the LCD bias network. Place 100 nF decoupling close to VDD and 10 uF bulk on VLCD.
Route the LCD segment and common traces as short and balanced as possible to avoid ghosting on the glass. Keep analog inputs (RA0-RA5) away from the OSC1/OSC2 traces and from the LCD bias network to minimise coupling into ADC measurements. The PLCC-68 socket should be of the low-profile surface-mount type with retention clips to withstand shock and vibration in appliance and meter applications.
Thông tin tuân thủ
RoHS and lead-free status not specified in the verified web data; the part is listed as obsolete by Microchip. AEC-Q100 is not applicable because the device targets industrial/consumer embedded use rather than automotive. Confirm compliance directly with Microchip before placing volume orders.
