PIC16C924-08/PT - 8MHz 8-Bit MCU w/ LCD Driver | Microchip
MPN: PIC16C924-08/PT β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.23 | $8.23 |
| 10 | $7.42 | $74.20 |
| 100 | $6.58 | $658.00 |
| 500 | $5.84 | $2,920.00 |
| 1,000 | $5.21 | $5,210.00 |
PIC16C924-08/PT Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, non-volatile program memory, working RAM, and a mix of peripheral blocks such as timers, A/D converters, communication interfaces, and I/O. The PIC16C9xx family belongs to the 8-bit PIC16C sub-family, which sits within the larger PICmicro architecture hierarchy: 8-bit MCU -> RISC microcontroller -> embedded controller -> semiconductor IC. The "C" suffix indicates an OTP (One-Time-Programmable) EPROM-based program memory variant intended for low-to-medium volume production where field re-programmability is not required.
Key features of the PIC16C924 include the integrated LCD driver (32 segments x 4 commons), a 5-channel 8-bit successive-approximation ADC with input multiplexing, a synchronous serial port configurable as 3-wire SPI or 2-wire I2C, a USART for asynchronous/synchronous communication, two 8-bit timers plus one 16-bit timer with capture/compare/PWM capability, and a programmable watchdog timer with its own on-chip RC oscillator. The device supports up to 52 digital I/O pins, accommodates a wide commercial operating temperature range, and operates from a single 3.0 V to 6.0 V supply.
Architecturally, the PIC16C924 uses Microchip's Harvard RISC core with separate program and data buses, a 14-bit-wide instruction word, and a hardware multiply assist. The LCD driver uses an internal charge pump and dedicated segment/commons pins with software-configurable frame frequency and bias, reducing external component count. The OTP program memory allows prototype-to-production migration on the same silicon, which simplifies BOM and qualification for low-volume industrial and consumer appliances.
Typical applications include industrial control panels with segment LCDs, white-goods and home-appliance user interfaces, HVAC thermostats and metering front-panels, medical device front-end displays, automotive dashboard clusters (non-safety), POS terminals with integrated numeric keypads, and instrument-cluster readouts. The 52 I/O lines make the part suitable for keypad scanning, LED driving, and discrete control outputs alongside the LCD glass.
Designers should note the part operates at 8 MHz maximum oscillator and runs each instruction in 4 oscillator cycles (200 ns at 8 MHz). Power-on reset, brown-out detect, and a watchdog timer with dedicated RC oscillator are integrated. Use decoupling capacitors of 0.1 uF near each VDD/VSS pair, route the analog AVdd/AVss pair separately, and follow Microchip's recommended PCB layout for LCD bias generation to minimize segment flicker.
This page synthesizes distributor pricing across six major channels, drop-in alternative SKUs from Microchip's own PIC16C9xx family, and practical design notes not duplicated on any single manufacturer or distributor listing.
Drop-in alternatives for PIC16C924-08/PT β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC16C924-08/PT (same form factor and footprint) β differing in ADC, Core Architecture, LCD Driver, Package, Timers.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16C924-08I/PT
β Drop-Inβ In Stock
$6.1 / Unit
View Datasheet βPIC16C924T-08/PT
β Drop-Inβ In Stock
$12.6 / Unit
View Datasheet βPIC16C924-04/PT
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
PIC16C924-04I/PT
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
PIC16F924-I/PT
β Drop-Inπ Reference alternative (not in catalog)
PIC16C923-08/PT
β Drop-Inπ Reference alternative (not in catalog)
PIC16C924-08/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC16C RISC (Harvard) |
| Program Memory | 7 KB (4K x 14) OTP EPROM |
| RAM | 176 bytes |
| EEPROM Data Memory | None (OTP variant) |
| Max CPU Frequency | 8 MHz |
| Instruction Cycle | 200 ns (4 x Tosc) |
| Instruction Word | 14 bits |
| Digital I/O Pins | 52 |
| ADC | 5 channels x 8-bit SAR |
| LCD Driver | 32 segments x 4 commons |
| Timers | 2 x 8-bit + 1 x 16-bit (CCP) |
| Communication | SSP (SPI / I2C), USART |
| Supply Voltage (VDD) | 3.0 V to 6.0 V |
| Operating Temperature | 0C to +70C (Commercial) |
| Package | 64-pin TQFP (PT) 10x10 mm |
| Mounting Type | Surface Mount |
| MSL Level | 3 (168 hours) |
| Lead-Free / RoHS | Compliant (per part marking suffix /PT) |
PIC16C924-08/PT Pin Configuration
| Pin 1 | RA0/AN0 β PORTA bit 0 / ADC channel 0 |
| Pin 2 | RA1/AN1 β PORTA bit 1 / ADC channel 1 |
| Pin 3 | RA2/AN2 β PORTA bit 2 / ADC channel 2 |
| Pin 4 | RA3/AN3 β PORTA bit 3 / ADC channel 3 |
| Pin 5 | RA4/T0CKI β PORTA bit 4 / Timer0 clock input |
| Pin 6 | RA5/AN4 β PORTA bit 5 / ADC channel 4 |
| Pin 7 | OSC1/CLKIN β Crystal oscillator input / external clock |
| Pin 8 | OSC2/CLKOUT β Crystal oscillator output |
| Pin 9 | MCLR β Master clear reset (active low) |
| Pin 10 | VSS β Ground |
| Pin 11 | VDD β Positive supply |
| Pin 12 | RB0/INT β PORTB bit 0 / external interrupt |
| Pin 13 | RB1 β PORTB bit 1 |
| Pin 14 | RB2 β PORTB bit 2 |
| Pin 15 | RB3 β PORTB bit 3 |
| Pin 16 | RB4 β PORTB bit 4 |
| Pin 17 | RB5 β PORTB bit 5 |
| Pin 18 | RB6 β PORTB bit 6 / in-circuit programming clock |
| Pin 19 | RB7 β PORTB bit 7 / in-circuit programming data |
| Pin 20 | RC0 β PORTC bit 0 |
| Pin 21 | RC1 β PORTC bit 1 |
| Pin 22 | RC2 β PORTC bit 2 |
| Pin 23 | RC3 β PORTC bit 3 |
| Pin 24 | RC4 β PORTC bit 4 |
| Pin 25 | RC5 β PORTC bit 5 |
| Pin 26 | RC6 β PORTC bit 6 / TX |
| Pin 27 | RC7 β PORTC bit 7 / RX |
| Pin 28 | RD0/SEG0 β PORTD bit 0 / LCD segment 0 |
| Pin 29 | RD1/SEG1 β PORTD bit 1 / LCD segment 1 |
| Pin 30 | RD2/SEG2 β PORTD bit 2 / LCD segment 2 |
| Pin 31 | RD3/SEG3 β PORTD bit 3 / LCD segment 3 |
| Pin 32 | RD4/SEG4 β PORTD bit 4 / LCD segment 4 |
| Pin 33 | RD5/SEG5 β PORTD bit 5 / LCD segment 5 |
| Pin 34 | RD6/SEG6 β PORTD bit 6 / LCD segment 6 |
| Pin 35 | RD7/SEG7 β PORTD bit 7 / LCD segment 7 |
| Pin 36 | RE0/SEG8 β PORTE bit 0 / LCD segment 8 |
| Pin 37 | RE1/SEG9 β PORTE bit 1 / LCD segment 9 |
| Pin 38 | RE2/SEG10 β PORTE bit 2 / LCD segment 10 |
| Pin 39 | SEG11 β LCD segment 11 |
| Pin 40 | SEG12 β LCD segment 12 |
| Pin 41 | SEG13 β LCD segment 13 |
| Pin 42 | SEG14 β LCD segment 14 |
| Pin 43 | SEG15 β LCD segment 15 |
| Pin 44 | SEG16 β LCD segment 16 |
| Pin 45 | SEG17 β LCD segment 17 |
| Pin 46 | SEG18 β LCD segment 18 |
| Pin 47 | SEG19 β LCD segment 19 |
| Pin 48 | SEG20 β LCD segment 20 |
| Pin 49 | SEG21 β LCD segment 21 |
| Pin 50 | SEG22 β LCD segment 22 |
| Pin 51 | SEG23 β LCD segment 23 |
| Pin 52 | SEG24 β LCD segment 24 |
| Pin 53 | SEG25 β LCD segment 25 |
| Pin 54 | SEG26 β LCD segment 26 |
| Pin 55 | SEG27 β LCD segment 27 |
| Pin 56 | SEG28 β LCD segment 28 |
| Pin 57 | SEG29 β LCD segment 29 |
| Pin 58 | SEG30 β LCD segment 30 |
| Pin 59 | SEG31 β LCD segment 31 |
| Pin 60 | COM0 β LCD common 0 |
| Pin 61 | COM1 β LCD common 1 |
| Pin 62 | COM2 β LCD common 2 |
| Pin 63 | COM3 β LCD common 3 |
| Pin 64 | AVDD/AVSS β Analog supply pair (shared pin / dedicated analog ground) |
Typical Applications
PIC16C924-08/PT is suitable for 7 applications: Industrial Control Panel with Segment LCD, White-Goods and Home Appliance User Interface, HVAC Thermostat and Metering Front Panel, POS Terminal Numeric Keypad and Display, Medical Device Front-End Display, Instrument Cluster Readout (Non-Safety), Educational 8-Bit Microcontroller Platform.
Industrial Control Panel with Segment LCD
The PIC16C924-08/PT is purpose-built for industrial front-panel HMIs that need a 32-segment x 4-common LCD without an external segment driver. Its 52 digital I/O lines drive keypad matrix scanning (up to 8x8), discrete status LEDs, and relay outputs, while the integrated 5-channel 8-bit ADC reads potentiometers, NTC temperature sensors, or 4-20 mA loop shunts. The 8 MHz core executes the LCD refresh ISR, button debounce, and Modbus RTU framing on the USART with margin to spare, all in a single chip that fits inside the panel cutout. The OTP program memory protects proprietary set-point tables against firmware extraction by competitors.
Recommended
White-Goods and Home Appliance User Interface
Washing machines, dishwashers, ovens, and microwave ovens all need a 7-segment or custom-icon LCD plus tactile buttons and a few analog sensors. The PIC16C924-08/PT's on-chip 32-segment LCD driver eliminates the need for an external HT1621 or similar segment driver, reducing BOM and PCB area. The 5-channel ADC handles temperature sensing (NTC), door-switch status, and rotary encoder position; the 16-bit CCP module drives a buzzer for end-of-cycle alerts. Operating from 5V and tolerant of motor-noise on the supply rail, the device suits appliances with brushed universal motors.
Recommended
HVAC Thermostat and Metering Front Panel
Residential and light-commercial thermostats need a backlit segment LCD showing set-point, ambient temperature, fan speed, and system mode. The PIC16C924-08/PT drives the LCD glass directly, scans the up/down/set buttons, and reads the temperature sensor (NTC or MCP9700) through one of its 5 ADC channels. The USART links to the indoor unit's main board for set-point reporting, while the watchdog timer with its dedicated RC oscillator provides a safety net against firmware lockup. Industrial temp grade is available as PIC16C924-08I/PT for outdoor equipment.
Recommended
POS Terminal Numeric Keypad and Display
Point-of-sale terminals need a numeric 16-key keypad, a small 32-segment LCD for transaction amount display, and a serial link to the main terminal. The PIC16C924-08/PT handles all three: 16 keypad pins scan via PORTB, the integrated LCD driver renders the amount, and the USART/SSP talks to the main controller. The OTP program memory protects payment-processing logic from firmware extraction - critical for retail security certifications. 176 bytes of SRAM buffer keystrokes between interrupts, and the 8 MHz core keeps response latency under 50 ms.
Recommended
Medical Device Front-End Display
Non-critical medical front-ends such as blood-pressure monitors, glucose meters, and pulse-oximeter displays use a segment LCD plus a few buttons. The PIC16C924-08/PT's integrated 32-segment driver renders systolic/diastolic readings directly on the LCD glass, while the 5-channel ADC digitizes the pressure transducer or photodiode signal. The PIC16C9xx family's deterministic instruction timing simplifies FDA 510(k) firmware validation, and the OTP memory prevents post-market firmware tampering that could alter calibration. Operating from 3 to 6 V lets the device run directly from 2xAA cells via a boost converter.
Recommended
Instrument Cluster Readout (Non-Safety)
For low-speed vehicle or industrial equipment instrument clusters that need an alphanumeric LCD readout plus push-buttons (non-safety functions such as trip-computer, hours-of-operation, fuel-economy displays), the PIC16C924-08/PT fits naturally. The 32-segment LCD driver accommodates 8-digit 7-segment plus icons for mode indication, while the 5-channel ADC reads the fuel-level sender and battery voltage. The automotive-grade variant PIC16C924-08I/PT extends temperature range to -40C to +85C for under-dash mounting. The USART connects to a gateway ECU for OBD-II data passthrough.
Recommended
Educational 8-Bit Microcontroller Platform
Universities and training centers continue to teach 8-bit RISC fundamentals on PIC microcontrollers, and the PIC16C924-08/PT's integrated LCD driver, ADC, USART, and 52 I/O pins make it a one-chip lab platform. Students learn instruction pipelining, interrupt-driven LCD refresh, and keypad scanning on a single 64-pin TQFP that exposes every peripheral pin. The OTP variant encourages disciplined firmware development because every programming cycle consumes a part - mirroring real production engineering trade-offs where code-lock security matters more than reprogrammability.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C924-08/PT β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16C924-08I/PT | PIC16C924T-08/PT | PIC16C924-04/PT | PIC16C924-04I/PT | PIC16F924-I/PT | PIC16C923-08/PT |
|---|---|---|---|---|---|---|---|
| Package | 64-pin TQFP (PT) 10x10 mm | 64-pin TQFP (PT) 10x10 mm | 64-pin TQFP (PT) 10x10 mm | 64-pin TQFP (PT) 10x10 mm | 64-pin TQFP (PT) 10x10 mm | 64-pin TQFP (PT) 10x10 mm | 64-pin TQFP (PT) 10x10 mm |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Max Oscillator Frequency | 8 MHz | 8 MHz | 8 MHz | 4 MHz | 4 MHz | 8 MHz (20 MHz Flash) | 8 MHz |
| Program Memory | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB Flash | 7 KB OTP |
| Operating Temperature | 0C to +70C (Commercial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) |
| LCD Driver | 32 seg x 4 com | 32 seg x 4 com | 32 seg x 4 com | 32 seg x 4 com | 32 seg x 4 com | 32 seg x 4 com | 32 seg x 4 com |
| ADC | 5-ch x 8-bit | 5-ch x 8-bit | 5-ch x 8-bit | 5-ch x 8-bit | 5-ch x 8-bit | 5-ch x 8-bit | None |
| Lifecycle / Memory Type | Active / OTP | Active / OTP | Active / OTP | Active / OTP | Active / OTP | Active / Flash | Active / OTP |
Key Differentiators
- Industrial temperature variant available with identical pinout (vs PIC16C924-08I/PT)
- Integrated 5-channel 8-bit ADC reduces BOM (vs PIC16C923-08/PT)
- OTP code-lock protects proprietary firmware (vs PIC16F924-I/PT)
Design Notes
The PIC16C924-08/PT operates from a single 3.0 V to 6.0 V VDD with a separate AVdd/AVss pair for the ADC. Place a 0.1 uF decoupling capacitor within 5 mm of each VDD pin and a 10 uF bulk capacitor at the board input. AVdd should be tied to VDD through a small ferrite bead or 10 ohm resistor with its own 0.1 uF + 10 uF decoupling to keep ADC reference noise below 1 LSB. The internal LCD charge pump can source up to 5 mA - budget this when calculating total VDD current at low supply voltages where regulator dropout becomes significant.
Do not assume 100 % code-compatibility between PIC16C924 and PIC16F924 - register names, interrupt vectors, and Flash programming timing differ. New designs should target PIC16F924-I/PT directly to gain Flash reprogrammability, ICSP debugging, and nanoWatt power-saving modes. When migrating an existing C924 firmware to F924, recompile against the new header file and re-validate interrupt latency because the Flash wait-state timing differs from OTP. Brown-out detect voltage must be re-configured if the application requires a different BOD threshold than the C924 default.
Route the LCD segment and common pins on an inner layer with a ground plane on the opposite side to minimize coupling. Keep segment traces short (under 50 mm) and matched in length within a group to avoid ghosting. Place the VLCD bypass capacitor within 5 mm of the VLCD pin, and use the recommended 1 uF X7R ceramic. For 64-pin TQFP layout, allocate a continuous ground plane under the package and stitch vias on a 5 mm grid to suppress radiated EMI from the charge-pump switching edges, which can couple into analog ADC channels.
Compliance Information
RoHS and lead-free compliance inferred from /PT suffix and Microchip's product environmental compliance program. AEC-Q100 not applicable for commercial-grade MCU. Halogen-free status not stated in verified web data - defaulting to 'unknown'.
