PIC16C923-08/PT - 7KB OTP 8-bit MCU w/ LCD Driver | Microchip
MPN: PIC16C923-08/PT ✗ Cuối đờiPIC16C923-08/PT Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, program memory, and I/O peripherals on one die. The PIC16C923 sits within Microchip's mature PIC16C OTP family, a sub-family of PIC microcontrollers -> 8-bit MCUs -> microcontrollers -> integrated circuits -> semiconductors. It targets embedded applications requiring deterministic execution and a rich on-chip peripheral set without in-system reprogrammability.
Key features include an integrated LCD driver capable of driving segmented displays directly, 33 digital I/O pins, an 8-bit A/D converter, a USART, a Synchronous Serial Port (SSP), and a Capture/Compare/PWM (CCP) module. The device supports 14-bit-wide instructions, 8-level deep hardware stack, and offers power-managed modes for low-power embedded designs.
The PIC16C923-08/PT uses an enhanced Harvard RISC architecture with separate program and data buses, enabling simultaneous instruction fetch and operand access. The OTP program memory is factory-programmable only, distinguishing this part from flash-based PIC16F devices; it is intended for high-volume production runs rather than field re-programmability.
Typical applications include industrial control panels with LCD readouts, home appliance front-panel controllers, medical instrumentation displays, automotive dashboard segments (non-safety), consumer electronics with character LCDs, and security system keypads/annunciators. The integrated LCD driver eliminates the need for an external display controller, reducing BOM cost in HMI-centric designs.
When designing with this part, note that OTP memory cannot be re-programmed in-circuit - firmware must be fully validated before commitment. For prototypes or field-upgradable designs, choose the flash-based PIC16F926-I/PT or PIC16F946-I/PT from the same Microchip LCD-driver family. The 64-TQFP package requires standard surface-mount assembly with JEDEC JEDEC-MS-026-compliant land pattern.
Bộ thay thế dễ dàng lắp đặt cho PIC16C923-08/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16C923-08/PT (cùng hình factor và footprint) — khác nhau ở Package, Program Memory Type, RAM Size, Timers, Mounting Type.
PIC16F926-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F946-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F914-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C923-04I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C923-08I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C923-08/PT Tỷ lệ tối đa & tính chất điện
| Architecture | 8-bit PIC RISC (Harvard) |
| Core | PIC16 |
| Program Memory Type | OTP (One-Time Programmable) EPROM |
| Program Memory Size | 7 KB (4K x 14 words) |
| RAM Size | 192 bytes |
| Data EEPROM | None |
| Instruction Set Size | 35 single-word instructions |
| Instruction Word Width | 14 bits |
| Max CPU Speed | 8 MHz |
| Instruction Cycle Time | 500 ns |
| Operating Voltage (Vdd) | 5 V |
| I/O Pins | 33 |
| Integrated LCD Driver | Yes |
| A/D Converter | 8-bit |
| Hộp | 64-pin TQFP (PT) |
| Kiểu lắp đặt | Surface Mount |
| Temperature Grade | Commercial |
Cấu hình chân PIC16C923-08/PT
| Chân 1 | SEG0 — LCD segment output 0 |
| Chân 2 | SEG1 — LCD segment output 1 |
| Chân 3 | SEG2 — LCD segment output 2 |
| Chân 4 | SEG3 — LCD segment output 3 |
| Chân 5 | SEG4 — LCD segment output 4 |
| Chân 6 | SEG5 — LCD segment output 5 |
| Chân 7 | SEG6 — LCD segment output 6 |
| Chân 8 | SEG7 — LCD segment output 7 |
| Chân 9 | SEG8 — LCD segment output 8 |
| Chân 10 | SEG9 — LCD segment output 9 |
| Chân 11 | SEG10 — LCD segment output 10 |
| Chân 12 | SEG11 — LCD segment output 11 |
| Chân 13 | SEG12 — LCD segment output 12 |
| Chân 14 | SEG13 — LCD segment output 13 |
| Chân 15 | SEG14 — LCD segment output 14 |
| Chân 16 | SEG15 — LCD segment output 15 |
| Chân 17 | SEG16 — LCD segment output 16 |
| Chân 18 | SEG17 — LCD segment output 17 |
| Chân 19 | SEG18 — LCD segment output 18 |
| Chân 20 | SEG19 — LCD segment output 19 |
| Chân 21 | SEG20 — LCD segment output 20 |
| Chân 22 | SEG21 — LCD segment output 21 |
| Chân 23 | SEG22 — LCD segment output 22 |
| Chân 24 | SEG23 — LCD segment output 23 |
| Chân 25 | VLCD1 — LCD voltage reference 1 |
| Chân 26 | VLCD2 — LCD voltage reference 2 |
| Chân 27 | VLCD3 — LCD voltage reference 3 |
| Chân 28 | COM0 — LCD common output 0 |
| Chân 29 | COM1 — LCD common output 1 |
| Chân 30 | COM2 — LCD common output 2 |
| Chân 31 | COM3 — LCD common output 3 |
| Chân 32 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Chân 33 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Chân 34 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| Chân 35 | RA3/AN3/VREF+ — PORTA bit 3 / analog input 3 / VREF+ |
| Chân 36 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Chân 37 | RA5/AN4/SS — PORTA bit 5 / analog input 4 / SPI slave select |
| Chân 38 | VSS — Ground |
| Chân 39 | OSC1/CLKIN — Crystal oscillator input / external clock |
| Chân 40 | OSC2/CLKOUT — Crystal oscillator output / clock out |
| Chân 41 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator |
| Chân 42 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator / CCP2 |
| Chân 43 | RC2/CCP1 — PORTC bit 2 / CCP1 |
| Chân 44 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Chân 45 | RD0/PSP0 — PORTD bit 0 / Parallel Slave Port 0 |
| Chân 46 | RD1/PSP1 — PORTD bit 1 / Parallel Slave Port 1 |
| Chân 47 | RD2/PSP2 — PORTD bit 2 / Parallel Slave Port 2 |
| Chân 48 | RD3/PSP3 — PORTD bit 3 / Parallel Slave Port 3 |
| Chân 49 | RD4/PSP4 — PORTD bit 4 / Parallel Slave Port 4 |
| Chân 50 | RD5/PSP5 — PORTD bit 5 / Parallel Slave Port 5 |
| Chân 51 | RD6/PSP6 — PORTD bit 6 / Parallel Slave Port 6 |
| Chân 52 | RD7/PSP7 — PORTD bit 7 / Parallel Slave Port 7 |
| Chân 53 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Chân 54 | RC5/SDO — PORTC bit 5 / SPI data out |
| Chân 55 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| Chân 56 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| Chân 57 | RB0/INT — PORTB bit 0 / external interrupt |
| Chân 58 | RB1 — PORTB bit 1 |
| Chân 59 | RB2 — PORTB bit 2 |
| Chân 60 | RB3 — PORTB bit 3 |
| Chân 61 | RB4 — PORTB bit 4 |
| Chân 62 | RB5 — PORTB bit 5 |
| Chân 63 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Chân 64 | RB7/PGD — PORTB bit 7 / ICSP data |
Ứng dụng tiêu biểu
PIC16C923-08/PT phù hợp cho 6 Áp dụngs: Industrial Control Panels with LCD, Home Appliance Front-Panel Controllers, Medical Instrumentation Displays, Automotive Dashboard Segments (Non-Safety), Consumer Electronics with Character LCDs, Security System Keypads and Annunciators.
Industrial Control Panels with LCD
The PIC16C923-08/PT's integrated LCD driver and 7 KB OTP program memory make it well-suited for industrial control panels driving 4x40 or 8-comma-segment LCD character displays. Its 33 digital I/O lines can read multiple push-buttons, rotary encoders, and status LEDs while the on-chip LCD peripheral eliminates the need for an external display controller. Operating from 5 V at 8 MHz, the device provides deterministic 500 ns instruction execution suitable for real-time control loops in HMI front panels.
Được đề xuất
Home Appliance Front-Panel Controllers
White-goods appliances (washing machines, microwave ovens, dishwashers) require a microcontroller capable of driving segmented LCDs while reading keypads and controlling relays. The PIC16C923-08/PT's integrated LCD driver with built-in charge pump, 8-bit ADC for sensor input, and 5 V operation suit this role. The 7 KB OTP memory holds state-machine firmware for cycle control, and the 64-pin TQFP package fits within typical appliance main-board footprints with standard SMT assembly.
Được đề xuất
Medical Instrumentation Displays
Medical devices such as blood-pressure monitors, infusion pumps, and glucose meters benefit from the PIC16C923-08/PT's low-noise 5 V operation, integrated LCD driver for displaying measured values, and 8-bit ADC for sensor conditioning. The deterministic RISC architecture simplifies firmware validation, a regulatory requirement for medical designs. The 192-byte RAM is sufficient for stack depth and small data buffers in single-task monitoring applications.
Được đề xuất
Automotive Dashboard Segments (Non-Safety)
Non-safety automotive displays such as HVAC control panels, radio head units with LCD readouts, and trip computers can use the PIC16C923-08/PT. Its integrated LCD driver simplifies driving custom-segment displays showing temperature, fan speed, or radio presets. The commercial temperature grade is acceptable for cabin applications; for under-hood or safety-critical uses, an AEC-Q100-qualified part is required. The 64-pin TQFP package supports standard automotive PCB assembly processes.
Được đề xuất
Consumer Electronics with Character LCDs
Consumer products such as digital photo frames, portable radios, calculator-style devices, and audio equipment benefit from the PIC16C923-08/PT's combination of LCD driver, USART for communication, and CCP module for PWM-controlled backlight dimming or audio tone generation. Operating at 8 MHz with 500 ns instruction cycles, the MCU provides responsive user-interface handling for button debouncing and menu navigation while keeping power consumption low for mains-powered or battery applications.
Được đề xuất
Security System Keypads and Annunciators
Security keypads, alarm annunciators, and access-control panels typically require segmented LCDs to display status messages alongside matrix-scanned keypads. The PIC16C923-08/PT's 33 I/O pins support up to a 4x4 keypad matrix plus relay outputs for sirens and door strikes, while the integrated LCD driver displays arm/disarm status. The OTP memory prevents post-deployment firmware tampering - a security advantage in some deployment scenarios where firmware modification must be physically prevented.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C923-08/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC16F926-I/PT | PIC16F946-I/PT | PIC16F914-I/PT | PIC16C923-04I/PT | PIC16C923-08I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-pin TQFP (PT) | 64-pin TQFP (PT) - same | 64-pin TQFP (PT) - same | 64-pin TQFP (PT) - same | 64-pin TQFP (PT) - same | 64-pin TQFP (PT) - same |
| Program Memory Type | OTP EPROM | Flash | Flash | Flash | OTP EPROM | OTP EPROM |
| Program Memory Size | 7 KB (4K x 14) | 14 KB | 14 KB | 14 KB | 7 KB (4K x 14) | 7 KB (4K x 14) |
| RAM Size | 192 bytes | 336 bytes | 336 bytes | 256 bytes | 192 bytes | 192 bytes |
| Max CPU Speed | 8 MHz | 20 MHz | 20 MHz | 20 MHz | 4 MHz | 8 MHz |
| LCD Driver | Yes (integrated) | Yes (integrated) | Yes (integrated) | Yes (integrated, fewer segments) | Yes (integrated) | Yes (integrated) |
| Temperature Grade | Commercial | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) |
Bảo phân biệt quan trọng
- Integrated LCD driver eliminates external display controller (vsGeneric 8-bit MCU without LCD peripheral)
- Same 64-pin TQFP footprint as flash-based PIC16F926/PIC16F946 (vsPIC16F926-I/PT)
- OTP memory prevents field firmware modification (vsFlash-based PIC16F946-I/PT)
Ghi chú thiết kế
OTP memory cannot be re-programmed in-circuit. Validate firmware on a flash-based equivalent (PIC16F926-I/PT or PIC16F946-I/PT) before committing to PIC16C923-08/PT for production. Once programmed, the part cannot be erased or rewritten - any firmware bug requires replacing the device, which is expensive in-field.
Decouple VDD with at least one 100 nF ceramic capacitor placed within 5 mm of the VDD pin. For the 64-pin TQFP package, add a bulk 10 uF tantalum or ceramic capacitor near the MCU. The LCD driver charge pump and ADC reference share VDD; noise on VDD directly couples to the LCD bias and ADC readings, degrading display contrast and A/D accuracy.
Use a 4-layer PCB with a dedicated ground plane under the 64-pin TQFP for best EMI performance. Route the crystal oscillator traces (OSC1/OSC2) short and symmetric, surrounded by ground. Keep LCD segment traces away from high-frequency digital signals to avoid display artifacts. The 0.5 mm lead pitch of the TQFP package requires fine-pitch SMT assembly capability.
Pin 1 is located at the top-left of the 64-pin TQFP package with pin 1 marker (dot or beveled edge). Follow JEDEC JEDEC-MS-026-compliant land pattern with 0.5 mm pitch pads. The exposed thermal pad on the bottom of the TQFP improves thermal performance and should be soldered to a copper pad on the PCB tied to ground for heat dissipation.
Thông tin tuân thủ
RoHS, REACH, and halogen-free status not explicitly stated in verified web data; marked unknown per data authenticity rules. The part is commercial temperature grade (commercial, 0C to +70C) and is not AEC-Q100 qualified - not suitable for safety-critical automotive applications.
