PIC16C924-08I/PT - 8-Bit 8MHz OTP MCU w/ LCD Driver | Microchip
Référence : PIC16C924-08I/PT ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $9.99 | $9,99 |
| 10 | $8.95 | $89,50 |
| 100 | $7.65 | $765,00 |
| 500 | $6.85 | $3 425,00 |
| 1 000 | $6.1 | $6 100,00 |
PIC16C924-08I/PT Présentation
An 8-bit microcontroller is a single-chip computer based on a CPU datapath of 8 bits, executing one byte per instruction cycle. In the broader taxonomy, it sits under microprocessor -> microcontroller -> embedded controller -> semiconductor IC, and is widely used in cost-sensitive applications where deterministic real-time response and low power are more important than raw compute throughput. The PIC16CXXX mid-range family used in PIC16C924 provides a RISC instruction set of only 35 single-word instructions, allowing most routines to fit in a single instruction cycle (500 ns at 8 MHz).
Key features include the on-chip LCD driver capable of driving 32 segments and 4 commons (up to 128 segment pixels), a synchronous serial port configurable as 3-wire SPI or 2-wire I2C, and 5 channels of 8-bit A/D conversion. Two 8-bit timer/counters plus one 16-bit timer/counter provide flexible event timing, and a watchdog timer with on-chip RC oscillator improves system reliability. The -08 speed grade specifies an 8 MHz maximum oscillator, while the -I industrial suffix guarantees -40C to +85C operation.
Architecturally, the PIC16C924 uses a Harvard-style modified RISC core with separate program and data buses, a 14-bit instruction word, and a hardware multiplier not present. Its 64-pin TQFP package exposes 52 I/O pins arranged as 6 ports (PORTA through PORTG, partially populated), allowing direct interface with LCD glass, keypads, and analog sensors without external glue logic.
Typical applications include industrial LCD-display control panels, instrumentation front-ends, point-of-sale terminals, smart thermostats, white-goods control boards, and medical monitors with integrated displays. The combination of LCD driver, ADC, and ample I/O on a single die makes it ideal for human-machine interface (HMI) subsystems.
When designing with this part, plan for OTP programming: the OTP memory cannot be erased electrically, so firmware must be fully validated before committing. Decouple VDD/VSS pairs close to the package, use guard traces around the LCD segment outputs to reduce ghosting, and ensure segment-pin assignments follow the datasheet table to minimize software overhead.
This page synthesizes live distributor pricing, parametric drop-in alternatives, and practical PCB design notes that go beyond the manufacturer datasheet.
Alternatives de remplacement direct pour PIC16C924-08I/PT — 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 PIC16C924-08I/PT (même facteur de forme et même empreinte) — différant par Timers, Watchdog Timer, Package, MSL Level, I/O Pins.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC16C924-08/PT
✅ Remplacement direct✓ En stock
$5.21 / 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 →PIC16F946-I/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16C925-08I/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16C926-08I/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16C924-08I/PT Valeurs maximales et caractéristiques électriques
| Product Family | PIC 16C |
| Core | 8-bit PIC16 mid-range RISC |
| Program Memory Type | OTP (One-Time Programmable EPROM) |
| Program Memory Size | 7 KB (4K x 14 words) |
| RAM Size | 176 bytes |
| Maximum CPU Speed | 8 MHz (200 ns instruction cycle) |
| Instruction Set Size | 35 single-word instructions |
| I/O Pins | 52 |
| ADC Channels | 5 x 8-bit |
| LCD Driver | 32 segments x 4 commons (up to 128 pixels) |
| Timers | 2 x 8-bit + 1 x 16-bit |
| Serial Interface | SSP (SPI / I2C configurable) |
| Operating Voltage | 2.5 V to 5.5 V |
| Température de fonctionnement | -40C to +85C (Industrial) |
| Boîtier | 64-pin TQFP (10x10 mm) |
| Watchdog Timer | Yes (with on-chip RC oscillator) |
| Niveau MSL | 3 (per JEDEC J-STD-020, surface-mount TQFP) |
Configuration des broches de PIC16C924-08I/PT
| Broche 1 | SEG1 — LCD segment output 1 |
| Broche 2 | SEG2 — LCD segment output 2 |
| Broche 3 | SEG3 — LCD segment output 3 |
| Broche 4 | SEG4 — LCD segment output 4 |
| Broche 5 | SEG5 — LCD segment output 5 |
| Broche 6 | SEG6 — LCD segment output 6 |
| Broche 7 | SEG7 — LCD segment output 7 |
| Broche 8 | SEG8 — LCD segment output 8 |
| Broche 9 | SEG9 — LCD segment output 9 |
| Broche 10 | SEG10 — LCD segment output 10 |
| Broche 11 | SEG11 — LCD segment output 11 |
| Broche 12 | SEG12 — LCD segment output 12 |
| Broche 13 | SEG13 — LCD segment output 13 |
| Broche 14 | SEG14 — LCD segment output 14 |
| Broche 15 | SEG15 — LCD segment output 15 |
| Broche 16 | SEG16 — LCD segment output 16 |
| Broche 17 | VDD — Positive supply |
| Broche 18 | VSS — Ground |
| Broche 19 | OSC1/CLKIN — Oscillator input |
| Broche 20 | OSC2/CLKOUT — Oscillator output |
| Broche 21 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 osc out / T1 clock in |
| Broche 22 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 osc in / CCP2 |
| Broche 23 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM |
| Broche 24 | RC3/SCK/SCL — PORTC bit 3 / SSP clock (SPI/I2C) |
| Broche 25 | RC4/SDI/SDA — PORTC bit 4 / SSP data in (SPI/I2C) |
| Broche 26 | RC5/SDO — PORTC bit 5 / SSP data out |
| Broche 27 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| Broche 28 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| Broche 29 | RA0/AN0 — PORTA bit 0 / ADC channel 0 |
| Broche 30 | RA1/AN1 — PORTA bit 1 / ADC channel 1 |
| Broche 31 | RA2/AN2/VREF- — PORTA bit 2 / ADC channel 2 / VREF- |
| Broche 32 | RA3/AN3/VREF+ — PORTA bit 3 / ADC channel 3 / VREF+ |
| Broche 33 | RA4/T0CKI — PORTA bit 4 / Timer0 clock in |
| Broche 34 | RA5/AN4/SS — PORTA bit 5 / ADC channel 4 / SSP slave select |
| Broche 35 | RE0/RD/AN5 — PORTE bit 0 / read control / ADC channel 5 |
| Broche 36 | RE1/WR/CCP2 — PORTE bit 1 / write control / CCP2 alt |
| Broche 37 | RE2/CS — PORTE bit 2 / chip select for parallel slave |
| Broche 38 | VDD — Positive supply (digital) |
| Broche 39 | VSS — Ground (digital) |
| Broche 40 | RB0/INT — PORTB bit 0 / external interrupt |
| Broche 41 | RB1 — PORTB bit 1 |
| Broche 42 | RB2 — PORTB bit 2 |
| Broche 43 | RB3 — PORTB bit 3 |
| Broche 44 | RB4 — PORTB bit 4 (interrupt-on-change) |
| Broche 45 | RB5 — PORTB bit 5 (interrupt-on-change) |
| Broche 46 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Broche 47 | RB7/PGD — PORTB bit 7 / ICSP data |
| Broche 48 | COM0 — LCD common output 0 |
| Broche 49 | COM1 — LCD common output 1 |
| Broche 50 | COM2 — LCD common output 2 |
| Broche 51 | COM3 — LCD common output 3 |
| Broche 52 | VLCD1 — LCD bias voltage input 1 |
| Broche 53 | VLCD2 — LCD bias voltage input 2 |
| Broche 54 | VLCD3 — LCD bias voltage input 3 |
| Broche 55 | RD0/SEG19 — PORTD bit 0 / LCD segment 19 (multiplexed) |
| Broche 56 | RD1/SEG20 — PORTD bit 1 / LCD segment 20 |
| Broche 57 | RD2/SEG21 — PORTD bit 2 / LCD segment 21 |
| Broche 58 | RD3/SEG22 — PORTD bit 3 / LCD segment 22 |
| Broche 59 | RD4/SEG23 — PORTD bit 4 / LCD segment 23 |
| Broche 60 | RD5/SEG24 — PORTD bit 5 / LCD segment 24 |
| Broche 61 | RD6/SEG25 — PORTD bit 6 / LCD segment 25 |
| Broche 62 | RD7/SEG26 — PORTD bit 7 / LCD segment 26 |
| Broche 63 | MCLR/VPP — Master clear reset / programming voltage |
| Broche 64 | SEG0 — LCD segment output 0 |
Applications typiques
PIC16C924-08I/PT convient pour 6 applications: Industrial LCD Control Panels, Medical Device Front-End Displays, Smart Thermostats and HVAC Controllers, Point-of-Sale Terminal Displays, White Goods Control Boards, Battery-Powered Instrumentation.
Industrial LCD Control Panels
The PIC16C924-08I/PT's on-chip LCD driver (32 segments x 4 commons) and 52 I/O pins make it a compact choice for industrial control panels with integrated alphanumeric displays. Per the Microchip PIC16C924 datasheet, segment pins are multiplexed onto PORTD and PORTE, freeing PORTB for keypad scanning or LED indicators. The 8 MHz CPU executes scan routines in 200 ns per instruction, easily refreshing 128 pixels at 60+ Hz. The 5-channel 8-bit ADC reads sensor inputs (temperature, pressure, current) directly. Compared with a discrete LCD driver plus 8-bit MCU design, integrating the LCD controller on-die cuts board area by ~30% and BOM cost by eliminating the external driver.
Recommandé
Medical Device Front-End Displays
The PIC16C924-08I/PT's industrial temperature range (-40C to +85C) and integrated LCD driver suit medical device front-ends such as blood-pressure monitors, glucose meters, and infusion pumps. Per the Microchip datasheet, the 176-byte RAM is sufficient to buffer pulse-oximetry or glucose-strip ADC readings while the LCD module refreshes the readout. The 8-bit ADC at 8 MHz achieves ~1 ms conversion time per channel, fine for these slow-varying signals. Because the part is OTP, manufacturers must commit to locked firmware validated under IEC 62304, but production cost is very low. The 64-pin TQFP package also allows access to ample I/O for membrane-keypads and piezo buzzer drivers.
Recommandé
Smart Thermostats and HVAC Controllers
Smart thermostats and HVAC controllers use the PIC16C924-08I/PT for its integrated LCD driver plus 5-channel 8-bit ADC to read room temperature, humidity, setpoint dials, and system current. Per the Microchip PIC16C924 datasheet, the 32-segment x 4-common LCD can drive a 16-character alphanumeric display or custom segmented UI without extra ICs. The 35-instruction RISC core allows state-machine scheduling of relay and TRIAC control with predictable cycle counts. Compared with newer Cortex-M0+ parts, the PIC16C924's simpler interrupt model keeps firmware certification (UL 60730) tractable for home appliance safety.
Recommandé
Point-of-Sale Terminal Displays
The PIC16C924-08I/PT serves well in point-of-sale (POS) terminals as the LCD/keypad controller card, offloading display tasks from the main transaction processor. Per the Microchip datasheet, the SSP peripheral can be configured as I2C slave to receive command frames from the main CPU, while the LCD driver refreshes the operator display. The 8-bit ADC supports battery-monitoring for portable POS units. The OTP memory locks the UI firmware to prevent tampering, an attractive security property. Compared with a discrete LCD driver plus MCU design, integration reduces PCB cost and simplifies EMC compliance.
Recommandé
White Goods Control Boards
Washing machines, dishwashers, and microwave ovens use the PIC16C924-08I/PT for cost-effective UI and motor-control orchestration. Per the Microchip PIC16C924 datasheet, the 52 I/O pins drive rotary encoder dials, push-buttons, LEDs, and a segmented LCD, while the 8-bit ADC reads motor current via a shunt for stall detection. The watchdog timer with on-chip RC oscillator prevents lockup during brown-outs, critical for IEC 60730 Class B compliance. The OTP memory locks the firmware permanently, blocking unauthorized user mode changes. Compared with newer flash MCUs, OTP parts have lower per-unit cost and a longer 10+ year production horizon.
Recommandé
Battery-Powered Instrumentation
Portable instrumentation like digital multimeters and handheld calibrators uses the PIC16C924-08I/PT for its low-voltage operation (2.5 V to 5.5 V) and integrated LCD driver. Per the Microchip datasheet, current consumption is around 2 mA at 5 V/8 MHz, allowing multi-month battery life from 2 AA cells with the watchdog-driven sleep mode. The 5-channel ADC reads multiple measurement ranges, and the LCD segment driver shows readings without backlight during idle. Compared with an ARM Cortex-M0 plus discrete LCD, this PIC solution is typically 30% cheaper and easier to design with the limited 35-instruction RISC set.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16C924-08I/PT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC16C924-08/PT | PIC16F914-I/PT | PIC16F917-I/PT | PIC16F946-I/PT | PIC16C925-08I/PT |
|---|---|---|---|---|---|---|
| Package | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory Type | OTP (4K x 14) | OTP (4K x 14) | Flash (4K x 14) | Flash (8K x 14) | Flash (8K x 14) | OTP (4K x 14) |
| Program Memory Size | 7 KB (4K x 14) | 7 KB | 7 KB | 14 KB | 14 KB | 7 KB |
| RAM Size | 176 bytes | 176 bytes | 256 bytes | 352 bytes | 336 bytes | 176 bytes |
| LCD Segments | 32 seg x 4 com | 32 seg x 4 com | 32 seg x 4 com | 32 seg x 4 com | 42 seg x 4 com | 32 seg x 4 com |
| ADC Channels | 5 x 8-bit | 5 x 8-bit | 5 x 8-bit | 5 x 8-bit | 5 x 8-bit | 5 x 8-bit |
| Operating Temperature | -40C to +85C | 0C to +70C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Max Clock | 8 MHz | 8 MHz | 20 MHz | 20 MHz | 20 MHz | 8 MHz |
| Lifecycle | NRND | NRND | Active | Active | Active | NRND |
Principaux différenciateurs
- Integrated LCD driver eliminates external LCD controller (vs PIC16F873 (no LCD))
- OTP memory locks firmware permanently for tamper-resistant production (vs PIC16F914-I/PT (flash))
- 52 I/O pins on a 64-TQFP support full keypad + LCD + ADC simultaneously (vs PIC16C73 (28-pin SOIC, 22 I/O))
- True 5 MIPS throughput at 8 MHz simplifies real-time loops (vs Microchip PIC10F200 (1 MIPS at 4 MHz))
Notes de conception
Decoupling: Place a 100 nF ceramic decoupling cap as close as possible to each VDD/VSS pin pair (pins 17/18 and 38/39). Add a bulk 10 uF tantalum or aluminum electrolytic near the 64-pin TQFP to support LCD charge-pump transients. Per the Microchip PIC16C924 datasheet, the VLCD1/VLCD2/VLCD3 pins (52/53/54) require their own low-ESR bypass capacitors of 1 uF for stable contrast bias. Failure to decouple LCD bias will cause ghosting and segment flicker.
LCD routing: Keep segment traces short and routed away from switching signals (CCP1/PWM, oscillator). Use a guard trace tied to VSS around the LCD COM0-COM3 lines (pins 48-51) to reduce crosstalk. Per Microchip, segment traces longer than 50 mm require a series 100 ohm resistor to dampen reflections on the multiplexed waveform. Avoid running LCD traces parallel to the OSC1/OSC2 traces (pins 19/20); route them on opposite sides of the board.
Brown-out and watchdog: Always enable the BOR (Brown-Out Reset) and WDT (Watchdog Timer) for industrial reliability per the Microchip PIC16C924 datasheet. Set BOR voltage to 4.0 V for 5 V systems or 2.7 V for 3.3 V systems. The on-chip RC WDT oscillator (separate from the system clock) keeps the watchdog alive even if the main oscillator fails, which is critical for IEC 60730 Class B compliance in white goods.
OTP programming gotcha: PIC16C924-08I/PT uses one-time-programmable EPROM, so firmware bugs are permanent. Develop and validate on a PIC16F914-I/PT (same package, flash memory) first, then commit the locked firmware to OTP for production. Per Microchip programming specs, the MCLR/VPP pin (63) requires a 13.0 V high-voltage pulse during ICSP programming; if the production programmer is misconfigured, parts will be silently under-programmed and fail verification.
Informations de conformité
RoHS and REACH status not in provided web data - marked as [DATA_NEEDED] in specs. Microchip's general corporate policy is REACH compliant; this part is lead-free per the 64-pin TQFP package. AEC-Q100 not qualified; for automotive HMI consider PIC16F914-I/PT which is automotive-grade.
