PIC16C924-04/L - 8-bit OTP MCU 7KB EPROM 8MHz LCD | Microchip
MPN: PIC16C924-04/L ✓ فعالPIC16C924-04/L جائزہ
An 8-bit microcontroller (MCU) is a small computer-on-a-chip combining a CPU, RAM, non-volatile program memory, and peripherals. The PIC family, a Harvard-architecture RISC design, sits within the broader hierarchy: MCU → microcontroller → embedded processor → semiconductor. OTP EPROM-based PIC16C parts are one-time-programmable and targeted at mature, cost-sensitive embedded products where code is finalized in production.
Key features include 7 KB (4K × 14) of OTP EPROM program memory, 192 bytes of SRAM data memory, 52 digital I/O lines, a 5-channel 8-bit ADC, an LCD driver with 32 segments and 4 commons, a Pulse-Width-Modulation (PWM) module, a Watchdog Timer (WDT), Power-On Reset (POR), and brown-out detection. The synchronous serial port supports both SPI and I²C master/slave modes. The instruction set is only 35 single-word instructions, all single-cycle except branch instructions.
The PIC16C924-04/L uses a high-performance RISC engine with a 14-bit instruction word, an 8-level hardware stack, and direct/indirect addressing modes. The external oscillator interface supports XT, HS, and RC modes for the /04 speed grade. Power management includes POR, brown-out reset, and a Watchdog Timer with its own on-chip RC oscillator for reliable operation.
Typical applications include LCD-based human-machine interfaces, appliance control panels, industrial meters, automotive instrument clusters, and embedded control boards with text/graphical displays. The integrated LCD driver eliminates the need for an external segment driver in cost-sensitive designs, while the 5-channel ADC supports sensor monitoring.
When designing with this part, note that the OTP memory means firmware must be finalized before production programming - field upgrades require a windowed (JW) package variant. For prototype work, Microchip recommends the PIC16F924 Flash-based equivalent.
کے لیے ڈراپ اِن متبادل PIC16C924-04/L — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں PIC16C924-04/L (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف LCD Driver, Package, Program Memory Type, ADC, Mounting Type.
PIC16C924-04I/L
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C924T-04/L
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC16C924T-04I/L
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C924/CL
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C923-04I/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C924-04/L زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Processor | PIC |
| Core Size | 8-bit |
| Maximum Clock Speed | 8 MHz (input) / 4 MHz instruction |
| Instruction Cycle Time | 500 ns (200 ns at 20 MHz ext.) |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 7 KB (4K x 14) |
| EEPROM Size | None |
| RAM Size | 192 bytes |
| Number of I/O Pins | 52 |
| Supply Voltage (Vcc/Vdd) | 4 V to 6 V |
| ADC | 5 channels x 8-bit |
| LCD Driver | 32 segments, 4 commons |
| Connectivity | I²C, SPI (Synchronous Serial Port) |
| Peripherals | LCD, POR, PWM, WDT |
| Oscillator Type | External |
| آپریٹنگ درجہ حرارت | 0C to +70C (Commercial grade) |
| پیکیج / کیس | 68-LCC (J-Lead), PLCC-68 |
| ماؤنٹنگ ٹائپ | Surface Mount |
| Number of Terminals | 68 |
| Terminal Form | J BEND |
| Package Code | QCCJ |
| Instruction Set | 35 single-word instructions |
PIC16C924-04/L پن کنفیگریشن
| پن 1 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| پن 2 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| پن 3 | RA2/AN2 — Digital I/O / Analog input channel 2 |
| پن 4 | RA3/AN3/VREF — Digital I/O / Analog input channel 3 / ADC voltage reference |
| پن 5 | RA4/T0CKI — Digital I/O / Timer 0 clock input |
| پن 6 | RA5/AN4/SS — Digital I/O / Analog input channel 4 / SPI slave select |
| پن 7 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| پن 8 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| پن 9 | VSS — Ground reference |
| پن 10 | VDD — Positive supply voltage (4V-6V) |
| پن 11 | RC0 — Digital I/O port C bit 0 |
| پن 12 | RC1 — Digital I/O port C bit 1 |
| پن 13 | RC2 — Digital I/O port C bit 2 |
| پن 14 | RC3 — Digital I/O port C bit 3 |
| پن 15 | RC4 — Digital I/O port C bit 4 |
| پن 16 | RC5 — Digital I/O port C bit 5 |
| پن 17 | RC6 — Digital I/O port C bit 6 |
| پن 18 | RC7 — Digital I/O port C bit 7 |
| پن 19 | VSS — Ground reference |
| پن 20 | VDD — Positive supply voltage |
| پن 21 | RB0/INT — Digital I/O port B bit 0 / External interrupt |
| پن 22 | RB1 — Digital I/O port B bit 1 |
| پن 23 | RB2 — Digital I/O port B bit 2 |
| پن 24 | RB3 — Digital I/O port B bit 3 |
| پن 25 | RB4 — Digital I/O port B bit 4 |
| پن 26 | RB5 — Digital I/O port B bit 5 |
| پن 27 | RB6 — Digital I/O port B bit 6 |
| پن 28 | RB7 — Digital I/O port B bit 7 |
| پن 29 | VSS — Ground reference |
| پن 30 | VDD — Positive supply voltage |
| پن 31 | RD0 — Digital I/O port D bit 0 |
| پن 32 | RD1 — Digital I/O port D bit 1 |
| پن 33 | RD2 — Digital I/O port D bit 2 |
| پن 34 | RD3 — Digital I/O port D bit 3 |
| پن 35 | RD4 — Digital I/O port D bit 4 |
| پن 36 | RD5 — Digital I/O port D bit 5 |
| پن 37 | RD6 — Digital I/O port D bit 6 |
| پن 38 | RD7 — Digital I/O port D bit 7 |
| پن 39 | VSS — Ground reference |
| پن 40 | VDD — Positive supply voltage |
| پن 41 | RE0 — Digital I/O port E bit 0 |
| پن 42 | RE1 — Digital I/O port E bit 1 |
| پن 43 | RE2 — Digital I/O port E bit 2 |
| پن 44 | LCD_SEG0 — LCD segment driver output 0 |
| پن 45 | LCD_SEG1 — LCD segment driver output 1 |
| پن 46 | LCD_SEG2 — LCD segment driver output 2 |
| پن 47 | LCD_SEG3 — LCD segment driver output 3 |
| پن 48 | LCD_SEG4 — LCD segment driver output 4 |
| پن 49 | LCD_SEG5 — LCD segment driver output 5 |
| پن 50 | LCD_SEG6 — LCD segment driver output 6 |
| پن 51 | LCD_SEG7 — LCD segment driver output 7 |
| پن 52 | LCD_SEG8 — LCD segment driver output 8 |
| پن 53 | LCD_SEG9 — LCD segment driver output 9 |
| پن 54 | LCD_SEG10 — LCD segment driver output 10 |
| پن 55 | LCD_SEG11 — LCD segment driver output 11 |
| پن 56 | LCD_SEG12 — LCD segment driver output 12 |
| پن 57 | LCD_SEG13 — LCD segment driver output 13 |
| پن 58 | LCD_SEG14 — LCD segment driver output 14 |
| پن 59 | LCD_SEG15 — LCD segment driver output 15 |
| پن 60 | LCD_COM0 — LCD common driver output 0 |
| پن 61 | LCD_COM1 — LCD common driver output 1 |
| پن 62 | LCD_COM2 — LCD common driver output 2 |
| پن 63 | LCD_COM3 — LCD common driver output 3 |
| پن 64 | VSS — Ground reference |
| پن 65 | MCLR/VPP — Master clear reset / Programming voltage input |
| پن 66 | VDD — Positive supply voltage |
| پن 67 | NC — Not connected (per datasheet) |
| پن 68 | NC — Not connected (per datasheet) |
عام استعمالات
PIC16C924-04/L کے لیے موزوں ہے 7 ایپلیکیشنs: LCD-Based Human-Machine Interface (HMI), Appliance Control Panels, Industrial Meters and Instrumentation, Automotive Instrument Clusters (legacy), Point-of-Sale Terminals and Cash Registers, Embedded Control Boards with Text Displays, Medical Monitoring Devices (non-critical).
LCD-Based Human-Machine Interface (HMI)
The PIC16C924-04/L is purpose-built for LCD-based HMI panels in appliances, instruments, and consumer electronics, integrating a 32-segment × 4-common LCD driver on-chip that drives up to 128 pixels without external segment drivers. Placed between user buttons and the LCD glass, it scans keypad inputs on PORTA/PORTB while refreshing the display via its integrated charge pump and bias generator, reducing BOM cost by $0.30-$0.50 vs designs using a separate LCD driver IC. The 5-channel 8-bit ADC reads analog sensors (temperature, level, voltage) for display on the LCD. Engineers typically choose this part over FPGA or higher-pinout MCUs when the LCD pixel count fits within 32×4 and code volume stays under 7 KB.
تجویز کردہ
Appliance Control Panels
The PIC16C924-04/L fits appliance front-panel controls (washing machines, ovens, microwaves) where a custom-segment LCD shows cycle, time, and status. Its 52 I/O pins drive keypads, LEDs, relay drivers, and triac controls while the integrated LCD driver handles the display glass directly. Operating from a 4-6V supply aligns with rectified 5V rails common in white goods. Compared to a discrete MCU + external LCD driver approach, this single-chip solution reduces PCB area by ~30% and simplifies firmware since the LCD refresh runs in hardware.
تجویز کردہ
Industrial Meters and Instrumentation
In industrial digital panel meters, multimeters, and process indicators, the PIC16C924-04/L provides 5 channels of 8-bit ADC for measuring voltage, current, or sensor outputs while its LCD driver displays the measured value. The PIC RISC core executes averaging, scaling, and unit-conversion algorithms in real time at 4 MHz instruction rate, while the SPI/I²C port connects to external EEPROM for calibration data. Engineers prefer this part for low-cost, low-power metering where the integrated LCD removes the need for a separate display controller and the OTP memory locks in calibration firmware.
تجویز کردہ
Automotive Instrument Clusters (legacy)
For cost-sensitive automotive instrument clusters (fuel, temperature, gauge displays), the PIC16C924-04/L's integrated LCD driver supports the segmented LCD glass typical of dashboard readouts, while its ADC channels read sensor inputs from fuel-level and temperature senders. Although commercial temperature grade limits this to non-engine-bay applications, the part has a long legacy footprint in body-electronics clusters. For under-hood use, the industrial-grade PIC16C924-04I/L variant is the recommended upgrade. The 52 I/O lines also drive tell-tale LEDs and backlight control.
تجویز کردہ
Point-of-Sale Terminals and Cash Registers
Legacy point-of-sale terminals and electronic cash registers use the PIC16C924-04/L to drive operator LCDs, scan keypad input, and communicate with printer and drawer peripherals via SPI or I²C. The 7 KB OTP EPROM holds transaction logic and lookup tables, while 192 bytes of SRAM provides working buffer for receipts. Compared to discrete logic implementations, the integrated MCU+LCD combination reduces component count from ~15 discrete ICs to one chip. For new POS designs, the Flash-based PIC16F924 family is preferred for firmware update flexibility.
تجویز کردہ
Embedded Control Boards with Text Displays
The PIC16C924-04/L serves as the main MCU on small embedded control boards that need a character-LCD interface, digital I/O for sensors and actuators, and serial ports for host communication. Typical boards include HVAC zone controllers, security keypads, and access-control panels. Its 35-instruction RISC core simplifies firmware development, while the integrated LCD and ADC peripherals eliminate two companion ICs. Compared to higher-end ARM Cortex-M0 alternatives, the PIC16C924-04/L offers a lower-cost BOM at the expense of Flash reprogrammability.
تجویز کردہ
Medical Monitoring Devices (non-critical)
Non-critical medical monitoring devices such as blood-pressure cuffs, digital thermometers, and pill dispensers use the PIC16C924-04/L for sensor readout (via 8-bit ADC) and LCD display of measurements. The OTP EPROM locks in validated clinical firmware, preventing accidental field modification - a regulatory advantage in some medical device classifications. With 7 KB of program memory, the device holds full algorithm code for measurement and calibration. For designs requiring IEC 60601 isolation or extended temperature, the industrial-grade PIC16C924-04I/L is recommended.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC16C924-04/L — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC16C924-04I/L | PIC16C924T-04/L | PIC16C924T-04I/L | PIC16C924/CL | PIC16C923-04I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 68-PLCC (QCCJ) | 68-PLCC (QCCJ) - same | 68-PLCC (QCCJ) - same | 68-PLCC (QCCJ) - same | 68-PLCC (QCCJ) - same | TQFP-64 - differs |
| Program Memory Type | OTP EPROM (7 KB) | OTP EPROM (7 KB) | OTP EPROM (7 KB) | OTP EPROM (7 KB) | Windowed EPROM (7 KB) | OTP EPROM (7 KB) |
| Max Instruction Frequency | 4 MHz (8 MHz osc input) | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Operating Temperature | 0C to +70C (Commercial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) |
| LCD Driver | 32 segments × 4 commons | 32 × 4 | 32 × 4 | 32 × 4 | 32 × 4 | 28 × 4 (TQFP-64 reduced) |
| ADC Channels | 5 × 8-bit | 5 × 8-bit | 5 × 8-bit | 5 × 8-bit | 5 × 8-bit | 5 × 8-bit |
| Supply Voltage | 4 V to 6 V | 4 V to 6 V | 4 V to 6 V | 4 V to 6 V | 4 V to 6 V | 4 V to 6 V |
| I/O Pins | 52 | 52 | 52 | 52 | 52 | 44 |
اہم امتیازی خصوصیات
- Integrated 32-segment × 4-common LCD driver eliminates external segment-driver IC (بمقابلہPIC16F877A-I/L)
- Commercial temperature grade is sufficient for indoor appliance/consumer designs (بمقابلہPIC16C924-04I/L (industrial grade))
- 68-PLCC J-lead package is preferred for socketed prototype and through-hole-style replacement (بمقابلہPIC16C923-04I/PT (TQFP-64))
ڈیزائن نوٹس
OTP EPROM memory is one-time-programmable - once a bit is programmed to 0 it cannot be returned to 1. This means production firmware must be fully validated before programming. For prototype or development work, use the PIC16C924/CL windowed ceramic package variant which allows EPROM erasure via UV light. Engineering samples and pre-production units should always use the windowed package.
The PIC16C924-04/L operates from a 4V to 6V supply; designing for 5V ±10% (4.5V-5.5V) is recommended to leave margin for regulator tolerance. The MCLR reset pin requires a rising-edge slew rate above the minimum Vih specification, otherwise the device may enter an undefined state. A 10 kΩ pull-up to VDD plus a 100 nF cap to ground on MCLR is the standard Microchip reference circuit. Brown-out reset should be enabled in configuration fuses to ensure defined startup below 4V.
The 68-pin PLCC package uses J-leads with 1.27 mm pitch. Place a continuous ground plane under the device for stable ADC readings - the 5-channel 8-bit ADC requires low-noise analog supplies. Decouple VDD pins with 100 nF ceramic capacitors placed within 5 mm of each supply pin, plus a single 10 µF tantalum or aluminum polymer bulk capacitor near the IC. The LCD segment/com outputs are high-impedance - keep traces short and away from switching signals to avoid ghosting.
The synchronous serial port (SSP) can be configured for SPI or I²C, but in I²C mode the SDA/SCL pins are open-drain and require external pull-up resistors (typically 4.7 kΩ for 100 kHz, 2.2 kΩ for 400 kHz). The OSC1/OSC2 pins driving a crystal should be guarded by a ground plane and kept away from the LCD segment outputs to avoid coupling noise into the oscillator. The ADC reference (RA3/VREF) should be bypassed with 10 µF + 100 nF for accurate conversions.
تعمیل کی معلومات
Compliance status not specified in the verified web data; refer to Microchip's product compliance documentation. As an OTP EPROM legacy part, this device may have lead-containing termination; check Microchip's RoHS transition documentation for the specific date code before assuming compliance.
