PIC16C923T-04/PT - 8-Bit 4MHz OTP MCU with LCD | Microchip
MPN: PIC16C923T-04/PT ✗ Cuối đờiPIC16C923T-04/PT Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, and programmable peripherals onto one IC. Within the broader taxonomy, the PIC16C923 is a member of the 8-bit PIC16 OTP family, a sub-class of microcontrollers, which themselves belong to embedded processors and ultimately to digital ICs and semiconductors. OTP variants use one-time-programmable EPROM for code storage, providing non-volatile retention at lower cost than flash, but they cannot be re-programmed.
Key features of the PIC16C923T-04/PT include built-in I2C and SPI serial interfaces, an on-chip LCD driver with dedicated segment and common pins, a 10-bit PWM module, power-on reset (POR), brown-out reset (BOR), and a watchdog timer (WDT). The integrated LCD controller simplifies human-machine-interface designs by eliminating the need for an external display driver.
The PIC16C923 core uses a Harvard RISC architecture with separate program and data buses, allowing instruction fetch and operand access to occur in the same cycle. The 8-level hardware stack and 8 special-function registers provide deterministic interrupt response. An 8-bit timer/counter, capture/compare, and 10-bit PWM are integrated, alongside synchronous and asynchronous serial ports.
Typical applications include alphanumeric LCD display modules, industrial control panels, instrumentation with segmented displays, point-of-sale terminals, and consumer appliance interfaces. The wide temperature-grade range of the commercial -I variant and 64-pin TQFP footprint give designers flexibility for compact HMI boards.
When designing with the PIC16C923T-04/PT, choose a programmer that supports OTP EPROM (not flash) and ensure the LCD bias and segment pin allocations match your display glass. Because the device is OTP, firmware revision control is critical before programming.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC16C923T-04/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 PIC16C923T-04/PT (cùng hình factor và footprint) — khác nhau ở Package, Core Architecture, LCD Driver, RAM Size, Timers.
PIC16C923-04/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C923T-04I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C923-04I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →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 →PIC16C923T-04/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Series | PIC16C 8-bit OTP Microcontrollers |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 7 KB (4K x 14) |
| RAM | 176 B |
| CPU Speed | 4 MHz |
| Instruction Cycle | 500 ns |
| Instruction Set | 35 single-word instructions |
| LCD Driver | Integrated, on-chip |
| Serial Interfaces | I2C, SPI |
| PWM Channels | 1 x 10-bit |
| Watchdog Timer (WDT) | Yes |
| Brown-out Reset (BOR) | Yes |
| Power-On Reset (POR) | Yes |
| Hộp | 64-pin TQFP (10x10 mm), T/R suffix |
| Kiểu lắp đặt | Surface Mount |
Cấu hình chân PIC16C923T-04/PT
| Chân 1 | LCDSEG0 — LCD segment driver output |
| Chân 2 | LCDSEG1 — LCD segment driver output |
| Chân 3 | LCDSEG2 — LCD segment driver output |
| Chân 4 | LCDSEG3 — LCD segment driver output |
| Chân 5 | LCDSEG4 — LCD segment driver output |
| Chân 6 | LCDSEG5 — LCD segment driver output |
| Chân 7 | LCDSEG6 — LCD segment driver output |
| Chân 8 | LCDSEG7 — LCD segment driver output |
| Chân 9 | VSS — Ground |
| Chân 10 | VDD — Positive supply |
| Chân 11 | OSC1 — Crystal/oscillator input |
| Chân 12 | OSC2 — Crystal/oscillator output |
| Chân 13 | MCLR — Master clear / reset |
| Chân 14 | RB0 — PORTB digital I/O (interrupt-on-change) |
| Chân 15 | RB1 — PORTB digital I/O |
| Chân 16 | RB2 — PORTB digital I/O |
| Chân 17 | RB3 — PORTB digital I/O |
| Chân 18 | RB4 — PORTB digital I/O |
| Chân 19 | RB5 — PORTB digital I/O |
| Chân 20 | RB6 — PORTB digital I/O / PGC |
| Chân 21 | RB7 — PORTB digital I/O / PGD |
| Chân 22 | RC0 — PORTC digital I/O |
| Chân 23 | RC1 — PORTC digital I/O |
| Chân 24 | RC2 — PORTC digital I/O |
| Chân 25 | RC3 — PORTC digital I/O |
| Chân 26 | RC4 — PORTC digital I/O |
| Chân 27 | RC5 — PORTC digital I/O |
| Chân 28 | RC6 — PORTC digital I/O / TX |
| Chân 29 | RC7 — PORTC digital I/O / RX |
| Chân 30 | RD0 — PORTD digital I/O |
| Chân 31 | RD1 — PORTD digital I/O |
| Chân 32 | RD2 — PORTD digital I/O |
| Chân 33 | RD3 — PORTD digital I/O |
| Chân 34 | RD4 — PORTD digital I/O |
| Chân 35 | RD5 — PORTD digital I/O |
| Chân 36 | RD6 — PORTD digital I/O |
| Chân 37 | RD7 — PORTD digital I/O |
| Chân 38 | RE0 — PORTE digital I/O / LCD BIAS |
| Chân 39 | RE1 — PORTE digital I/O / LCD BIAS |
| Chân 40 | RE2 — PORTE digital I/O / LCD BIAS |
| Chân 41 | LCDCOM0 — LCD common line output |
| Chân 42 | LCDCOM1 — LCD common line output |
| Chân 43 | LCDCOM2 — LCD common line output |
| Chân 44 | LCDCOM3 — LCD common line output |
| Chân 45 | VLCD1 — LCD voltage reference |
| Chân 46 | VLCD2 — LCD voltage reference |
| Chân 47 | VLCD3 — LCD voltage reference |
| Chân 48 | RCV — I/O / voltage reference |
| Chân 49 | NC — Not connected (per datasheet) |
| Chân 50 | NC — Not connected (per datasheet) |
| Chân 51 | NC — Not connected (per datasheet) |
| Chân 52 | NC — Not connected (per datasheet) |
| Chân 53 | NC — Not connected (per datasheet) |
| Chân 54 | LCDSEG8 — LCD segment driver output |
| Chân 55 | LCDSEG9 — LCD segment driver output |
| Chân 56 | LCDSEG10 — LCD segment driver output |
| Chân 57 | LCDSEG11 — LCD segment driver output |
| Chân 58 | LCDSEG12 — LCD segment driver output |
| Chân 59 | LCDSEG13 — LCD segment driver output |
| Chân 60 | LCDSEG14 — LCD segment driver output |
| Chân 61 | LCDSEG15 — LCD segment driver output |
| Chân 62 | LCDSEG16 — LCD segment driver output |
| Chân 63 | LCDSEG17 — LCD segment driver output |
| Chân 64 | LCDSEG18 — LCD segment driver output |
Ứng dụng tiêu biểu
PIC16C923T-04/PT phù hợp cho 6 Áp dụngs: Alphanumeric LCD Display Panels, Industrial Control Panels, Point-of-Sale Terminals, Medical Instrumentation Displays, Consumer Appliance Interfaces, Metering and Measurement.
Alphanumeric LCD Display Panels
The PIC16C923T-04/PT's integrated LCD driver directly multiplexes segment and common lines of 4x40 alphanumeric displays, eliminating an external LCD controller and reducing BOM by ~USD 0.80-1.50 per board. At 4 MHz / 500 ns instruction cycle, it refreshes the LCD charge-pump and segment registers without taxing its 8-level hardware stack, while 176 B SRAM holds LCD frame buffers for variable text.
Được đề xuất
Industrial Control Panels
For factory-floor HMI panels the PIC16C923T-04/PT drives multiplexed segment LCDs for status readouts, monitors digital inputs via its GPIO, and communicates with a master PLC over I2C or SPI - all from a single 64-pin TQFP device. The on-chip POR, BOR, and WDT give resilience against brown-outs and ESD on industrial wiring harnesses, while the industrial -I variant operates from -40C to +85C.
Được đề xuất
Point-of-Sale Terminals
In low-cost POS terminals the PIC16C923T-04/PT drives the operator 2x16 or 4x20 LCD, reads keypad matrix via GPIO, and exchanges transaction data over SPI to a host mainboard. The 35-instruction PIC16 RISC core yields predictable 500 ns response on every keypad scan loop, and OTP EPROM prevents firmware tampering by unauthorized service centers per the Microchip PIC16C923 datasheet.
Được đề xuất
Medical Instrumentation Displays
The PIC16C923T-04/PT powers handheld glucometer or blood-pressure monitor LCD readouts, sampling analog sensors, computing results, and refreshing segmented displays from its integrated LCD driver. The PIC16 RISC core is deterministic for sensor read timing, while the 10-bit PWM drives a buzzer or backlight. Industrial -I temperature grade supports equipment used in clinical environments.
Được đề xuất
Consumer Appliance Interfaces
Washing machines, microwave ovens, and induction cooktops use the PIC16C923T-04/PT to drive multi-segment LCD status displays, monitor keypads, and switch high-voltage loads via the 10-bit PWM. OTP EPROM secures calibration and timing constants against field reverse-engineering, and the 64-TQFP footprint supports compact appliance PCB layouts.
Được đề xuất
Metering and Measurement
Digital panel meters, temperature controllers, and weighing scales use the PIC16C923T-04/PT to display measurements on segmented LCD while the on-chip PWM drives control loops or relay set-points. The 176 B SRAM is sufficient for moving-average filters on ADC data, and the I2C bus links to external EEPROM for logging set-point profiles per the Microchip datasheet reference designs.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C923T-04/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 | PIC16C923-04/PT | PIC16C923T-04I/PT | PIC16F946-I/PT | PIC16F914-I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) |
| Program Memory Type | OTP EPROM, 7 KB | OTP EPROM, 7 KB | OTP EPROM, 7 KB | Flash, 14 KB | Flash, 8 KB |
| CPU Speed | 4 MHz (500 ns cycle) | 4 MHz | 4 MHz | 20 MHz | 20 MHz |
| RAM | 176 B | 176 B | 176 B | 336 B | 256 B |
| LCD Driver | Integrated, 4x40 max | Integrated, 4x40 max | Integrated, 4x40 max | Integrated, larger | Integrated, smaller |
| Temperature Grade | Commercial (0C to +70C) | Commercial | Industrial (-40C to +85C) | Industrial | Industrial |
| Lifecycle Status | NRND | NRND | NRND | Active | Active |
Bảo phân biệt quan trọng
- Integrated LCD driver reduces BOM and PCB area (vsExternal LCD controller (e.g., HD44780-based))
- OTP EPROM secures firmware against field tampering (vsPIC16F946-I/PT (flash-based))
- Deterministic 35-instruction RISC core (vsARM Cortex-M0+ MCUs)
Ghi chú thiết kế
Place decoupling capacitors (100 nF ceramic plus 10 uF tantalum) within 5 mm of VDD pin 10, with VSS pin 9 routed as a wide ground plane trace. The TQFP-64 package has a center thermal pad (some PIC16C923 revisions) - if present, solder it to a copper pour with multiple vias to VSS for thermal relief and EMI reduction.
The PIC16C923T-04/PT contains OTP EPROM, not flash - firmware cannot be erased or rewritten once programmed. Plan firmware revision control carefully: verify HEX on a windowed PIC16C923JW part before committing production code to OTP devices. Distinguishing features from flash PIC16F variants are missing ICSP erase capability and absence of EEPROM.
Brown-out reset (BOR) trip voltage should be configured to match the regulated supply to avoid spurious resets. Per the PIC16C923 datasheet, the on-chip voltage regulator requires the MCLR pin pulled high via 10 kohm to VDD, and the OSC1/OSC2 crystal load capacitors should match the crystal's rated load (typically 15-22 pF for 4 MHz).
Thông tin tuân thủ
RoHS, REACH, and lead-free status not explicitly stated in verified data; the PIC16C923 family was released prior to mandatory RoHS adoption, so PT (TQFP) variants may require tin-lead or be marked non-compliant - confirm via Microchip compliance certificates before using in RoHS-only production.
