PIC16F54T-E/SS - 8-Bit PIC MCU, 768B Flash, 20MHz | Microchip
MPN： PIC16F54T-E/SS ✓ 啟用中PIC16F54T-E/SS 概覽
Background: An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, volatile data memory, and programmable I/O peripherals. The PIC16F5X family sits within Microchip's original PICmicro architecture hierarchy - 8-bit MCU -> mid-range MCU -> PIC16 family - targeting low-pin-count, low-cost embedded control. With only 33 single-word instructions, the PIC16F54 is one of the simplest PICmicro devices, optimized for cost-sensitive, deterministic control loops where code size and BOM cost matter more than peripheral richness.
Key features include: 12 I/O ports with independent direction control, on-chip Power-on Reset (POR), a Watchdog Timer (WDT) with its own on-chip RC oscillator for reliable recovery, a 4-bit prescaler shared between WDT and Timer0, and in-circuit serial programming (ICSP) via two pins. The wide 2.0V-5.5V supply range supports both 3.3V and 5V rails. Code protection prevents unauthorized read-out of on-chip Flash.
Architecturally, the device uses a 12-bit-wide instruction word with a 2:1 code compression advantage versus competitive 8-bit MCUs, allowing 768 bytes of program memory to hold approximately 512 single-word instructions. Harvard architecture separates program and data buses, and most instructions execute in a single 200 ns cycle (5 MHz instruction rate at 20 MHz oscillator), simplifying real-time control math. The Extended temperature grade makes the 'E' variant suitable for automotive and industrial environments.
Typical applications include automotive body controllers, industrial sensor interfaces, low-end appliance control, LED driver sequencers, and battery-powered IoT edge nodes where deterministic timing and small footprint are priorities. The 12 I/O pins comfortably drive multiple switches, relays, or PWM outputs via firmware bit-banging.
Design consideration: Place a 0.1uF decoupling capacitor close to VDD, and follow Microchip's recommended ICSP layout (ICSPCLK/ICSPDAT lines) if in-field firmware updates are required. The Watchdog Timer should be enabled in any unattended embedded application to recover from firmware lock-ups.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 PIC16F54T-E/SS — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC16F54T-E/SS （相同外形與佔位） — 差異在於 Package, Watchdog Timer, Timers, Family, Program Memory Size.
PIC16F54-I/SS
✅ 直接替換聯絡詢價
查看資料表 →PIC16F54T-E/SO
✅ 直接替換聯絡詢價
查看資料表 →PIC16F54-E/SO
✅ 直接替換聯絡詢價
查看資料表 →PIC16F57-I/SS
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC16F59-E/SS
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC16C54C-04/SS
✅ 直接替換聯絡詢價
查看資料表 →PIC16F54T-E/SS 最大額定值與電氣特性
| Program Memory Type | Flash |
| Program Memory Size | 768 bytes |
| RAM Size | 25 bytes |
| CPU Core | PIC16 (8-bit RISC) |
| Instruction Set Size | 33 single-word instructions |
| Instruction Word Width | 12 bits |
| Max Clock Speed | 20 MHz |
| Instruction Execution Time | 200 ns |
| 供應電壓 | 2.0 V to 5.5 V |
| I/O Pins | 12 |
| Timers | 1 x 8-bit (Timer0 with 4-bit prescaler) |
| Watchdog Timer | Yes (with dedicated on-chip RC oscillator) |
| Power-on Reset | Yes (on-chip POR) |
| ICSP | Yes (In-Circuit Serial Programming) |
| ADC | None |
| 工作溫度範圍 | -40 C to +125 C (Extended grade) |
| 封裝 | SSOP-20 |
| 安裝類型 | Surface Mount |
| MSL 等級 | 1 |
| RoHS 狀態 | Compliant |
| Lead-Free | Yes |
PIC16F54T-E/SS 腳位配置
| 腳位 1 | RA2 — Bidirectional I/O port A bit |
| 腳位 2 | RA3 — Bidirectional I/O port A bit |
| 腳位 3 | RA4/T0CKI — I/O port A bit / Timer0 clock input |
| 腳位 4 | /MCLR — Master Clear (Reset, active low) |
| 腳位 5 | VSS — Ground reference |
| 腳位 6 | RB0/INT — I/O port B bit / External interrupt |
| 腳位 7 | RB1 — Bidirectional I/O port B bit |
| 腳位 8 | RB2 — Bidirectional I/O port B bit |
| 腳位 9 | RB3 — Bidirectional I/O port B bit |
| 腳位 10 | RB4 — Bidirectional I/O port B bit |
| 腳位 11 | RB5 — Bidirectional I/O port B bit |
| 腳位 12 | RB6 — Bidirectional I/O port B bit / ICSP clock |
| 腳位 13 | RB7 — Bidirectional I/O port B bit / ICSP data |
| 腳位 14 | VDD — Positive supply voltage |
| 腳位 15 | OSC2/CLKOUT — Oscillator output / Clock out |
| 腳位 16 | OSC1/CLKIN — Oscillator input / External clock |
| 腳位 17 | RA0 — Bidirectional I/O port A bit |
| 腳位 18 | RA1 — Bidirectional I/O port A bit |
| 腳位 19 | RC0 — Bidirectional I/O port C bit |
| 腳位 20 | RC1 — Bidirectional I/O port C bit |
典型應用
PIC16F54T-E/SS 適用於 6 應用s: Automotive Body Electronics, Industrial Sensor Interface, LED Lighting Sequencers, Low-End Appliance Control, Battery-Powered IoT Edge Nodes, Hobbyist and Educational Projects.
Automotive Body Electronics
The PIC16F54T-E/SS Extended temperature grade (-40C to +125C) suits automotive body controllers including mirror adjusters, seat controllers, and HVAC damper drivers. With 12 I/O pins and 20 MHz clock, the MCU reads switch inputs and drives relays or H-bridges in deterministic 200 ns cycles. Its 768-byte Flash holds ~512 instructions - enough for state-machine-based logic without external EEPROM. Pin-compatible with PIC16F54-I/SS variants for non-extreme-temp zones.
推薦
Industrial Sensor Interface
In industrial sensor-conditioning nodes the PIC16F54T-E/SS digitizes analog signals via its I/O ports and bit-banged ADC techniques, or interfaces directly to digital sensors over GPIO. Its 2.0V-5.5V supply range supports both 3.3V and 5V transducer rails without level shifters. The 33-instruction RISC core simplifies deterministic sampling loops, while the 20 MHz clock delivers 5 MIPS for real-time filtering. SSOP-20 keeps PCB footprint under 30 mm^2.
推薦
LED Lighting Sequencers
The PIC16F54T-E/SS drives multichannel LED sequencers in architectural lighting and signage by bit-banging PWM on its 12 I/O pins at up to 20 MHz. Each PWM period is divided into timer-driven intervals, with the 25-byte RAM holding the channel duty-cycle table. The 768-byte Flash easily accommodates chase, fade, and rainbow patterns. Its wide 2.0V-5.5V supply tolerates USB-powered and 5V-regulated LED strips equally well.
推薦
Low-End Appliance Control
Small kitchen and home appliances (rice cookers, fans, coffee grinders) use the PIC16F54T-E/SS as the main controller because its 12 I/O pins drive relays, triacs, and seven-segment displays directly while 768 bytes of Flash hold the timing state machine. Extended temperature grade (-40C to +125C) tolerates hot enclosures near heating elements. In-circuit serial programming (ICSP) allows last-minute firmware adjustments on the production line.
推薦
Battery-Powered IoT Edge Nodes
Low-duty-cycle IoT edge devices such as remote controls, wireless sensors, and BLE beacons leverage the PIC16F54T-E/SS's low active current and 2.0V minimum supply for direct Li-ion or 2x AA battery operation. The 12 I/O pins interface to pushbuttons, LEDs, and a UART-connected radio module, while the Watchdog Timer with on-chip RC oscillator guarantees recovery from radio lock-ups. SSOP-20 footprint suits coin-cell PCBs under 20 mm diameter.
推薦
Hobbyist and Educational Projects
Students, makers, and hobbyists adopt the PIC16F54T-E/SS because of its 33-instruction RISC core - the simplest PIC architecture to learn from scratch. Projects include blinking-LED trainers, motor-speed controllers, and digital dice. ICSP programming via a PICkit 3 or PICkit 4 lets students re-flash firmware in seconds. The SSOP-20 package requires a SOIC-breakout PCB for breadboard use; the SOIC-20 'E/SO' variant is friendlier for hand-soldering.
推薦
推薦產品摘要
工程參考資料，適用於 PIC16F54T-E/SS — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC16F54-I/SS | PIC16F54T-E/SO | PIC16F54-E/SO | PIC16F57-I/SS | PIC16C54C-04/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SSOP-20 | SSOP-20 - same | SSOP-20 - same | SSOP-20 - same | SSOP-20 - same | SSOP-20 - same |
| Program Memory | 768 bytes Flash | 768 bytes Flash | 768 bytes Flash | 768 bytes Flash | 2 KB Flash | 768 bytes OTP |
| RAM | 25 bytes | 25 bytes | 25 bytes | 25 bytes | 72 bytes | 25 bytes |
| Max Clock Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 4 MHz |
| I/O Pins | 12 | 12 | 12 | 12 | 20 | 12 |
| Operating Temperature | -40C to +125C | -40C to +85C | -40C to +125C | -40C to +125C | -40C to +85C | -40C to +85C |
| Program Memory Type | Flash | Flash | Flash | Flash | Flash | OTP (One-Time Programmable) |
主要差異化特點
- Extended -40C to +125C temperature grade (對比PIC16F54-I/SS)
- SSOP-20 compact package vs SOIC-20 (對比PIC16F54T-E/SO)
- Flash reprogrammability vs OTP (對比PIC16C54C-04/SS)
設計說明
Place a 0.1uF ceramic decoupling capacitor within 5 mm of the VDD pin and a bulk 1uF-10uF capacitor on the supply rail. The PIC16F54T-E/SS operates from 2.0V to 5.5V; for noisy 5V rails add an RC filter (10 ohm + 0.1uF) to suppress supply glitches that could trigger spurious /MCLR events. Estimated power consumption at 5V/20 MHz is approximately 5-10 mA active, dropping to sub-microamp in sleep mode.
Route the /MCLR line away from high-current switching traces to avoid induced reset pulses; pull /MCLR high through a 10 kohm resistor with optional 100 nF capacitor for noise immunity. If using ICSP, route ICSPCLK (RB6) and ICSPDAT (RB7) with short, parallel traces and avoid crossing high-impedance analog signals to minimize programming-voltage interference.
Configuration bits (FOSC, WDTE, /PWRTE, CP) must be set correctly or the device may fail to start. The PIC16F54T-E/SS has no on-chip oscillator - you must select HS, XT, LP, or RC oscillator mode via the FOSC configuration word matching your external oscillator or resonator. Always enable the Watchdog Timer (WDTE configuration bit) in unattended embedded applications to recover from firmware lock-ups.
合規資訊
RoHS and lead-free per Microchip product page. AEC-Q100 qualification status not confirmed in verified web data - confirm with Microchip FAE for automotive PPAP. Halogen-free status not stated in verified data.
