PIC16C924T-08/L - 8MHz 8-bit LCD MCU 7KB OTP 68-PLCC | Microchip
MPN: PIC16C924T-08/L ✗ जीवन की समाप्तिPIC16C924T-08/L अवलोकन
An LCD microcontroller is a specialized variant of an 8-bit MCU that adds on-chip segment drivers, charge-pump voltage generation, and bias network control to directly drive glass displays. Within the broader hierarchy it sits at: LCD MCU -> 8-bit microcontroller -> embedded microcontroller -> integrated circuit -> semiconductor. The integrated LCD subsystem eliminates the need for an external display controller, reducing BOM cost and PCB area in products that must show numeric or alphanumeric information without a graphical panel.
Key features include 4K x 14 OTP program memory (7KB), 176 bytes of data RAM, 8 general-purpose registers, an integrated 5-channel 8-bit ADC, I2C and SPI serial interfaces, and a wide operating voltage range suited to battery-powered designs. The OTP memory is a one-time-programmable EPROM variant, distinguishing this family from the flash-based PIC16F9xx series. The 68-PLCC package provides easy through-hole assembly and socket compatibility for legacy industrial designs.
The PIC16C924T-08/L uses Microchip's classic PIC16C RISC architecture, an enhanced Harvard design with separate program and data buses that allow instruction fetch and operand read in a single 500 ns cycle. The integrated LCD module supports common static, 1/2, 1/3, and 1/4 multiplex configurations and includes its own bias-generation resistor ladder, simplifying software-driven display updates while keeping the core CPU free for application logic.
Typical applications include industrial control panels with character LCDs, appliance user interfaces, instrumentation front panels, point-of-sale terminals, and battery-powered metering devices. The combination of low-cost OTP memory and a built-in segment driver suits high-volume consumer and industrial products that have a fixed firmware image.
When designing with this part, note that OTP memory cannot be reprogrammed in-circuit, so plan for prototype validation on a windowed (JW) package or a flash-based sibling such as PIC16F914 before committing to OTP volume units. Verify the maximum oscillator speed and ADC acquisition timing against your application to ensure adequate timing margin.
This page synthesizes distributor pricing, drop-in alternatives drawn from the same PIC16C9xx family, and practical design notes that go beyond what is in the bare Microchip datasheet.
के लिए ड्रॉप-इन विकल्प PIC16C924T-08/L — समान पैकेज, पिन-टू-पिन संगत। PCB रीवर्क आवश्यक करने वाले भिन्न-पैकेज पार्ट्स शामिल नहीं हैं।
इस सीरीज़ के वेरिएंट
समान श्रृंखला के मॉडल जो ड्रॉप-इन संगत हैं PIC16C924T-08/L (समान फॉर्म फैक्टर और फुटप्रिंट) — इसमें भिन्न LCD Driver, Package, ADC, Instruction Cycle, Mounting Type.
PIC16C924T-08I/L
✅ ड्रॉप-इनकीमत के लिए संपर्क करें
डेटाशीट देखें →PIC16C924-08/L
✅ ड्रॉप-इनकीमत के लिए संपर्क करें
डेटाशीट देखें →PIC16C924-04I/L
✅ ड्रॉप-इनकीमत के लिए संपर्क करें
डेटाशीट देखें →PIC16C923T-08I/L
✅ ड्रॉप-इन ⚠️ विनिर्देश असत्यापितकीमत के लिए संपर्क करें
डेटाशीट देखें →PIC16C924T-08/L Maximum Ratings और Electrical Characteristics
| Core | 8-bit PIC16C RISC |
| Instruction Set | 35 single-word instructions |
| Instruction Cycle | 500 ns (single cycle, 8 MHz) |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 7 KB (4K x 14) |
| Data RAM | 176 bytes |
| General Purpose Registers | 8 |
| Maximum Clock Speed | 8 MHz |
| ADC | 8-bit, 5 channels |
| Serial Interfaces | I2C, SPI |
| LCD Driver | Integrated segment LCD driver |
| पैकेज | 68-pin PLCC (24.23 x 24.23 mm) |
| Terminal Form | J-Bend |
| Temperature Grade | Commercial |
| माउंटिंग प्रकार | Surface Mount (PLCC socket compatible) |
PIC16C924T-08/L पिन कॉन्फ़िगरेशन
| पिन 1 | VDD — Positive power supply |
| पिन 2 | OSC1 — External oscillator input / crystal connection |
| पिन 3 | OSC2 — External oscillator output / crystal connection |
| पिन 4 | MCLR — Master clear reset input (active low) |
| पिन 5 | RA0 — PORTA bit 0 / analog input AN0 |
| पिन 6 | RA1 — PORTA bit 1 / analog input AN1 |
| पिन 7 | RA2 — PORTA bit 2 / analog input AN2 |
| पिन 8 | RA3 — PORTA bit 3 / analog input AN3 |
| पिन 9 | RA4 — PORTA bit 4 / analog input AN4 / Timer0 clock |
| पिन 10 | RA5 — PORTA bit 5 |
| पिन 11 | VSS — Ground reference |
| पिन 12 | RB0 — PORTB bit 0 / external interrupt |
| पिन 13 | RB1 — PORTB bit 1 |
| पिन 14 | RB2 — PORTB bit 2 |
| पिन 15 | RB3 — PORTB bit 3 |
| पिन 16 | RB4 — PORTB bit 4 |
| पिन 17 | RB5 — PORTB bit 5 |
| पिन 18 | RB6 — PORTB bit 6 / in-circuit debug |
| पिन 19 | RB7 — PORTB bit 7 / in-circuit debug |
| पिन 20 | VSS — Ground reference |
| पिन 21 | RC0 — PORTC bit 0 / LCD segment |
| पिन 22 | RC1 — PORTC bit 1 / LCD segment |
| पिन 23 | RC2 — PORTC bit 2 / LCD segment |
| पिन 24 | RC3 — PORTC bit 3 / LCD segment |
| पिन 25 | RC4 — PORTC bit 4 / LCD segment |
| पिन 26 | RC5 — PORTC bit 5 / LCD segment |
| पिन 27 | RC6 — PORTC bit 6 / LCD segment |
| पिन 28 | RC7 — PORTC bit 7 / LCD segment |
| पिन 29 | RD0 — PORTD bit 0 / LCD segment |
| पिन 30 | RD1 — PORTD bit 1 / LCD segment |
| पिन 31 | RD2 — PORTD bit 2 / LCD segment |
| पिन 32 | RD3 — PORTD bit 3 / LCD segment |
| पिन 33 | RD4 — PORTD bit 4 / LCD segment |
| पिन 34 | RD5 — PORTD bit 5 / LCD segment |
| पिन 35 | RD6 — PORTD bit 6 / LCD segment |
| पिन 36 | RD7 — PORTD bit 7 / LCD segment |
| पिन 37 | RE0 — PORTE bit 0 / LCD common |
| पिन 38 | RE1 — PORTE bit 1 / LCD common |
| पिन 39 | RE2 — PORTE bit 2 / LCD common |
| पिन 40 | VSS — Ground reference |
| पिन 41 | LCDBIAS0 — LCD bias generation pin 0 |
| पिन 42 | LCDBIAS1 — LCD bias generation pin 1 |
| पिन 43 | VLCD1 — LCD supply voltage 1 |
| पिन 44 | VLCD2 — LCD supply voltage 2 |
| पिन 45 | VLCD3 — LCD supply voltage 3 |
| पिन 46 | SCL — I2C clock line |
| पिन 47 | SDA — I2C data line |
| पिन 48 | SCK — SPI clock line |
| पिन 49 | SDI — SPI data input |
| पिन 50 | SDO — SPI data output |
| पिन 51 | RF0 — PORTF bit 0 / LCD segment |
| पिन 52 | RF1 — PORTF bit 1 / LCD segment |
| पिन 53 | RF2 — PORTF bit 2 / LCD segment |
| पिन 54 | RF3 — PORTF bit 3 / LCD segment |
| पिन 55 | RF4 — PORTF bit 4 / LCD segment |
| पिन 56 | RF5 — PORTF bit 5 / LCD segment |
| पिन 57 | RF6 — PORTF bit 6 / LCD segment |
| पिन 58 | RF7 — PORTF bit 7 / LCD segment |
| पिन 59 | RG0 — PORTG bit 0 / LCD common |
| पिन 60 | RG1 — PORTG bit 1 / LCD common |
| पिन 61 | RG2 — PORTG bit 2 / LCD common |
| पिन 62 | RG3 — PORTG bit 3 / LCD common |
| पिन 63 | RG4 — PORTG bit 4 / LCD common |
| पिन 64 | RG5 — PORTG bit 5 |
| पिन 65 | NC — Not connected (per datasheet) |
| पिन 66 | NC — Not connected (per datasheet) |
| पिन 67 | NC — Not connected (per datasheet) |
| पिन 68 | VDD — Positive power supply |
सामान्य अनुप्रयोग
PIC16C924T-08/L के लिए उपयुक्त है 6 अनुप्रयोगs: Industrial Control Panel with LCD, Appliance User Interface, Portable Instrumentation Front Panel, Point-of-Sale Terminal, Battery-Powered Metering Device, Automotive Dashboard Sub-Display (Legacy).
Industrial Control Panel with LCD
The PIC16C924T-08/L is engineered for industrial control panels that must display process variables on character LCDs without an external display controller. Its integrated segment LCD driver supports static through 1/4 multiplex modes and includes an internal bias resistor ladder, so the MCU drives the glass directly from PORT pins. The 8-bit ADC with 5 channels reads sensor inputs (temperature, pressure, flow) at the 8 MHz core rate, while I2C and SPI talk to external EEPROMs or digital potentiometers. The 7 KB OTP memory holds fixed control firmware and HMI state machines. Designers using PIC16C924T-08/L on a 24V industrial bus typically pair it with a TVS-protected regulator and an isolated I2C transceiver; the OTP memory means field firmware updates require physical replacement.
अनुशंसित
Appliance User Interface
Consumer appliances such as washing machines, dishwashers, microwave ovens, and induction cooktops rely on the PIC16C924T-08/L to drive a segment LCD showing program state, timer, and temperature. The integrated LCD driver eliminates the external HT1621 or similar display controller, cutting BOM cost and PCB area. The 8 MHz PIC core runs the cycle state machine and button-debounce logic, while the 8-bit ADC monitors temperature and humidity sensors. OTP memory is ideal here because the appliance firmware is locked at production time and never updated in the field. Drop-in alternatives such as PIC16C924-08/L share the same PLCC-68 footprint and silicon, allowing manufacturers to source either variant based on inventory.
अनुशंसित
Portable Instrumentation Front Panel
Handheld test and measurement instruments use the PIC16C924T-08/L to drive a custom segment LCD that shows measurement value, units, and battery status. The low-power CMOS core plus integrated LCD driver allow the display to remain updated in sleep mode while the CPU is halted, extending battery life on 2xAA or coin-cell designs. The 5-channel 8-bit ADC digitizes sensor inputs at the 500 ns instruction cycle, fast enough for thermocouple cold-junction compensation and ratiometric bridge measurements. The 68-PLCC package is socket-compatible, simplifying factory calibration and field service. Designers should plan for OTP memory constraints: prototype on a JW (windowed) package or use the flash-based PIC16F914-I/PT family for development.
अनुशंसित
Point-of-Sale Terminal
Compact point-of-sale (POS) terminals and price-lookup devices use the PIC16C924T-08/L to drive a character LCD showing price, item description, and total. The integrated LCD controller and 35-instruction RISC core handle barcode decoder input, transaction logging to external I2C EEPROM, and keypad scanning. The 7 KB OTP memory holds the product database and pricing tables for a single store or chain. I2C and SPI interfaces let the terminal talk to a mag-stripe reader or printer. Because PIC16C924T-08/L is now obsolete, long-life POS deployments should evaluate the PIC16F914-I/PT or migrate to a modern PIC18 or dsPIC for new designs.
अनुशंसित
Battery-Powered Metering Device
Battery-powered metering devices including gas, water, and electric meters benefit from the PIC16C924T-08/L integrated LCD driver and low-power CMOS design. The LCD driver can refresh the display in sleep mode while the CPU is halted, drawing microamps from a single lithium cell or 2xAA battery. The 8-bit ADC with 5 channels reads pulse-output flow sensors or shunt current, while I2C links to an external RTC for time-of-use billing. OTP memory locks the calibration coefficients and prevents field tampering. For new metering designs, the flash-based PIC16F914 family offers more RAM, more ADC channels, and the same LCD peripheral at the cost of a different package pinout.
अनुशंसित
Automotive Dashboard Sub-Display (Legacy)
Although PIC16C924T-08/L is commercial temperature grade, automotive dashboard sub-displays for aftermarket gauges and accessory controllers have used this part for showing trip data, oil life, and tire pressure on small segment LCDs. Designers should select the PIC16C924T-08I/L industrial temperature variant (-40C to +85C) instead, or migrate to AEC-Q100-qualified PIC16F914 or dsPIC33 family members. The integrated LCD driver simplifies the BOM and the 5-channel ADC reads the analog sensors directly. OTP memory is well suited to aftermarket gauges that are configured once and never updated.
अनुशंसित
अनुशंसित उत्पादों का सारांश
के लिए इंजीनियरिंग संदर्भ डेटा PIC16C924T-08/L — तुलना, डिज़ाइन मार्गदर्शन और अनुपालन जानकारी।
चयन गाइड
विकल्पों के साथ तुलना
| पैरामीटर | यह उत्पाद | PIC16C924T-08I/L | PIC16C924-08/L | PIC16C924-04I/L | PIC16C924T-08/PT | PIC16C923T-08I/L |
|---|---|---|---|---|---|---|
| Package | 68-PLCC | 68-PLCC - same | 68-PLCC - same | 68-PLCC - same | 64-TQFP - different | 68-PLCC - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum Clock Speed | 8 MHz | 8 MHz | 8 MHz | 4 MHz | 8 MHz | 8 MHz |
| Program Memory | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 4 KB OTP |
| Data RAM | 176 bytes | 176 bytes | 176 bytes | 176 bytes | 176 bytes | 176 bytes |
| Temperature Grade | Commercial (0C to +70C) | Industrial (-40C to +85C) | Commercial (0C to +70C) | Industrial (-40C to +85C) | Commercial (0C to +70C) | Industrial (-40C to +85C) |
| ADC | 8-bit, 5 channels | 8-bit, 5 channels | 8-bit, 5 channels | 8-bit, 5 channels | 8-bit, 5 channels | 8-bit, 5 channels |
| LCD Driver | Integrated segment LCD | Integrated segment LCD | Integrated segment LCD | Integrated segment LCD | Integrated segment LCD | Integrated segment LCD (reduced segments) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
मुख्य विशेषताएँ
- Industrial temperature drop-in option (बनामPIC16C924T-08I/L)
- Same silicon across packaging variants (बनामPIC16C924-08/L)
- Integrated LCD driver eliminates external controller (बनामPIC16C924-04I/L)
डिज़ाइन नोट्स
Use a PLCC-68 socket (e.g., 3M Textool or equivalent) for prototype builds so OTP devices can be replaced easily after firmware revisions. Decouple VDD with a 100 nF ceramic capacitor placed within 5 mm of the VDD pins (pin 1 and pin 68), and add a bulk 10 uF tantalum or ceramic capacitor near the package. The VLCD pins (43-45) require local 100 nF decoupling to keep the LCD charge-pump output stable and prevent display artifacts.
OTP memory cannot be erased or rewritten - every firmware revision that goes wrong costs a new PIC16C924T-08/L. Always prototype and validate firmware on a JW (windowed EPROM) package or the flash-based PIC16F914 family before committing to OTP volume units. Verify the oscillator configuration bits match your crystal choice (HS vs XT vs LP) - selecting HS for a 32.768 kHz crystal will fail to start. The PIC16C924 has no on-chip debug, so plan to use an ICD or ICE for development.
The 5-channel 8-bit ADC requires adequate acquisition time - at 8 MHz (TAD = 2 us minimum) use 16 TAD conversion cycles for full accuracy. Add a small RC low-pass filter (1 kohm + 100 pF) on analog inputs to reject digital switching noise from adjacent PORT pins. The LCD segment pins toggle at the LCD frame frequency (typically 50-200 Hz), so keep analog traces away from LCD lines or guard them with ground to prevent display noise coupling into ADC readings.
अनुपालन जानकारी
Lifecycle is obsolete per Microchip. RoHS, REACH, lead-free, halogen-free, and conflict-mineral status not explicitly stated in the verified web data - marked unknown and requires confirmation from Microchip's PCN records. Not AEC-Q100 qualified; PIC16C924T-08I/L is the industrial-temperature drop-in for harsh environments but still not automotive-qualified.
