PIC16C924T-08I/L - 8-Bit 8MHz OTP MCU w/ LCD Driver | Microchip
Référence : PIC16C924T-08I/L ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $9.84 | $9,84 |
| 10 | $9.15 | $91,50 |
| 100 | $8.42 | $842,00 |
| 500 | $7.61 | $3 805,00 |
| 1 000 | $6.88 | $6 880,00 |
PIC16C924T-08I/L Présentation
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.
Alternatives de remplacement direct pour PIC16C924T-08I/L — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC16C924T-08I/L (même facteur de forme et même empreinte) — différant par Package, LCD Driver, Program Memory Type, ADC, Timers.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC16C924-08/L
✅ Remplacement direct✓ En stock
$10.45 / unité
Voir la fiche technique →PIC16C924-08/PT
✅ Remplacement direct✓ En stock
$5.21 / unité
Voir la fiche technique →PIC16C924-04I/L
✅ Remplacement direct✓ En stock
$2.85 / unité
Voir la fiche technique →PIC16F914-I/PT
✅ Remplacement direct✓ En stock
$2.98 / unité
Voir la fiche technique →PIC16F917-I/PT
✅ Remplacement direct✓ En stock
$2.71 / unité
Voir la fiche technique →PIC16C924/CL
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$14.2 / unité
Voir la fiche technique →PIC16C924T-08I/L Valeurs maximales et caractéristiques électriques
| 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 |
| Température de fonctionnement | -40C to +85C (Industrial) |
| I/O Pins | 25 (programmable) |
| LCD Driver | Integrated (segment/com) |
| Boîtier | 68-PLCC (24.23 x 24.23 mm) |
| Type de montage | Surface Mount (PLCC J-Lead) |
| Temperature Grade | Industrial |
Configuration des broches de PIC16C924T-08I/L
| Broche 1 | RA0/AN0 — Port A bit 0 / Analog input 0 |
| Broche 2 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| Broche 3 | RA2/AN2 — Port A bit 2 / Analog input 2 |
| Broche 4 | RA3/AN3/VREF — Port A bit 3 / Analog input 3 / Voltage reference |
| Broche 5 | RA4/T0CKI — Port A bit 4 / Timer 0 clock input |
| Broche 6 | RA5/AN4/SS — Port A bit 5 / Analog input 4 / SPI slave select |
| Broche 7 | OSC1/CLKIN — Oscillator input / external clock |
| Broche 8 | OSC2/CLKOUT — Oscillator output / clock out |
| Broche 9 | VSS — Ground reference |
| Broche 10 | VDD — Positive supply (4 V to 6 V) |
| Broche 11 | VLCD — LCD supply voltage |
| Broche 12 | COM0 — LCD common output 0 |
| Broche 13 | COM1 — LCD common output 1 |
| Broche 14 | COM2 — LCD common output 2 |
| Broche 15 | COM3 — LCD common output 3 |
| Broche 16 | SEG0 — LCD segment output 0 |
| Broche 17 | SEG1 — LCD segment output 1 |
| Broche 18 | SEG2 — LCD segment output 2 |
| Broche 19 | SEG3 — LCD segment output 3 |
| Broche 20 | SEG4 — LCD segment output 4 |
| Broche 21 | SEG5 — LCD segment output 5 |
| Broche 22 | SEG6 — LCD segment output 6 |
| Broche 23 | SEG7 — LCD segment output 7 |
| Broche 24 | SEG8 — LCD segment output 8 |
| Broche 25 | SEG9 — LCD segment output 9 |
| Broche 26 | SEG10 — LCD segment output 10 |
| Broche 27 | SEG11 — LCD segment output 11 |
| Broche 28 | SEG12 — LCD segment output 12 |
| Broche 29 | SEG13 — LCD segment output 13 |
| Broche 30 | SEG14 — LCD segment output 14 |
| Broche 31 | SEG15 — LCD segment output 15 |
| Broche 32 | SEG16 — LCD segment output 16 |
| Broche 33 | SEG17 — LCD segment output 17 |
| Broche 34 | SEG18 — LCD segment output 18 |
| Broche 35 | SEG19 — LCD segment output 19 |
| Broche 36 | SEG20 — LCD segment output 20 |
| Broche 37 | SEG21 — LCD segment output 21 |
| Broche 38 | SEG22 — LCD segment output 22 |
| Broche 39 | SEG23 — LCD segment output 23 |
| Broche 40 | RB0/INT — Port B bit 0 / External interrupt |
| Broche 41 | RB1 — Port B bit 1 |
| Broche 42 | RB2 — Port B bit 2 |
| Broche 43 | RB3 — Port B bit 3 |
| Broche 44 | RB4 — Port B bit 4 |
| Broche 45 | RB5 — Port B bit 5 |
| Broche 46 | RB6 — Port B bit 6 |
| Broche 47 | RB7 — Port B bit 7 |
| Broche 48 | RC0 — Port C bit 0 |
| Broche 49 | RC1 — Port C bit 1 |
| Broche 50 | RC2 — Port C bit 2 |
| Broche 51 | RC3 — Port C bit 3 |
| Broche 52 | RC4 — Port C bit 4 |
| Broche 53 | RC5 — Port C bit 5 |
| Broche 54 | RC6 — Port C bit 6 |
| Broche 55 | RC7 — Port C bit 7 |
| Broche 56 | RD0 — Port D bit 0 |
| Broche 57 | RD1 — Port D bit 1 |
| Broche 58 | RD2 — Port D bit 2 |
| Broche 59 | RD3 — Port D bit 3 |
| Broche 60 | RD4 — Port D bit 4 |
| Broche 61 | RD5 — Port D bit 5 |
| Broche 62 | RD6 — Port D bit 6 |
| Broche 63 | RD7 — Port D bit 7 |
| Broche 64 | RE0/RD — Port E bit 0 / LCD read control |
| Broche 65 | RE1/WR — Port E bit 1 / LCD write control |
| Broche 66 | RE2/CS — Port E bit 2 / LCD chip select |
| Broche 67 | MCLR/VPP — Master clear reset / programming voltage |
| Broche 68 | VSS — Ground reference |
Applications typiques
PIC16C924T-08I/L convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16C924T-08I/L — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- Integrated segment LCD driver removes an external IC from the BOM (vs PIC16F84A (no LCD driver))
- Higher 8 MHz CPU speed than the 04 speed grade (vs PIC16C924-04I/L)
- Active flash alternative available for new designs (vs PIC16F914-I/PT)
Notes de conception
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.
Informations de conformité
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.
