PIC16C55-XTE/SS - 8-Bit 4MHz OTP MCU, 28-SSOP | Microchip
MPN: PIC16C55-XTE/SS ✗ Cuối đờiPIC16C55-XTE/SS Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, I/O peripherals, and a clock generator on one die. PIC16C5X devices employ a RISC architecture with only 33 single-word/single-cycle instructions, enabling deterministic execution and low code overhead. Within the broader MCU taxonomy, the PIC16C55 belongs to the 8-bit microcontroller class, sitting between 4-bit legacy controllers and modern 32-bit Cortex-M devices. OTP memory places it in the cost-optimized ROM-based MCU category, suitable for low-to-medium volume production where flash reprogrammability is not required at the IC level.
Key features of the PIC16C55-XTE/SS include a fully static CMOS design, 12-bit wide instruction word, 20 bidirectional I/O pins with high-current sink/source capability, and an operating voltage range suitable for 5V systems. The internal RC oscillator option allows clock generation without external components, reducing BOM cost in space-constrained designs. The -XT speed grade supports oscillator frequencies up to 4 MHz, while the Watchdog Timer enhances reliability in unattended or remote installations by resetting the MCU on software lock-up.
Typical applications include low-cost consumer appliances, hobbyist and educational embedded platforms, simple motor control loops, security keypad controllers, and industrial sensor interface modules. The compact 28-SSOP footprint also enables retrofit into legacy through-hole designs on adapter PCBs.
When designing with this part, verify the OTP programming procedure against the device programmer's supported device list - not all programmers handle PIC16C5X OTP devices natively. Pair the MCU with a 5V regulator and decoupling capacitor network per the datasheet's typical application circuit to ensure stable brown-out behavior.
This page synthesizes distributor pricing snapshots, drop-in same-family alternatives sourced from the Microchip cross-reference ecosystem, and practical design notes not aggregated on a single manufacturer page.
Bộ thay thế dễ dàng lắp đặt cho PIC16C55-XTE/SS — 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 PIC16C55-XTE/SS (cùng hình factor và footprint) — khác nhau ở Package, Core Architecture, Program Memory Size, RoHS Status, Watchdog Timer.
PIC16C55-XTE/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C55T-XTE/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C55-XT/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C55T-RC/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C55-RCE/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C55AT-04E/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C55-XTE/SS Tỷ lệ tối đa & tính chất điện
| Series | PIC 16C |
| Core | 8-bit RISC |
| Core Architecture | PIC16C5X |
| Program Memory Type | OTP (One-Time Programmable EPROM) |
| Program Memory Size | 768 B (512 x 12 words) |
| RAM Size | 24 B |
| Tần số xung maksimum | 4 MHz |
| Instruction Set Width | 12-bit |
| Number of I/O Pins | 20 |
| Timers/Counters | 2 x 8-bit |
| Watchdog Timer | Yes (with dedicated on-chip RC oscillator) |
| Power-on Reset | Yes |
| Hộp | 28-SSOP (0.209", 5.30 mm width) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16C55-XTE/SS
| Chân 1 | RA2/MCLR/VPP — Port A bit 2 / Master Clear (reset, active low) / Programming voltage input |
| Chân 2 | RA3 — Port A bit 3 (digital I/O) |
| Chân 3 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Chân 4 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Chân 5 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| Chân 6 | RC0 — Port C bit 0 (digital I/O) |
| Chân 7 | RC1 — Port C bit 1 (digital I/O) |
| Chân 8 | RC2 — Port C bit 2 (digital I/O) |
| Chân 9 | RC3 — Port C bit 3 (digital I/O) |
| Chân 10 | RC4 — Port C bit 4 (digital I/O) |
| Chân 11 | RC5 — Port C bit 5 (digital I/O) |
| Chân 12 | RC6 — Port C bit 6 (digital I/O) |
| Chân 13 | RC7 — Port C bit 7 (digital I/O) |
| Chân 14 | VSS — Ground reference |
| Chân 15 | RB0/INT — Port B bit 0 / External interrupt input |
| Chân 16 | RB1 — Port B bit 1 (digital I/O) |
| Chân 17 | RB2 — Port B bit 2 (digital I/O) |
| Chân 18 | RB3 — Port B bit 3 (digital I/O) |
| Chân 19 | RB4 — Port B bit 4 (digital I/O) |
| Chân 20 | RB5 — Port B bit 5 (digital I/O) |
| Chân 21 | RB6 — Port B bit 6 (digital I/O) |
| Chân 22 | RB7 — Port B bit 7 (digital I/O) |
| Chân 23 | RA0 — Port A bit 0 (digital I/O) |
| Chân 24 | RA1 — Port A bit 1 (digital I/O) |
| Chân 25 | RA5 — Port A bit 5 (digital I/O) |
| Chân 26 | RA6 — Port A bit 6 (digital I/O) |
| Chân 27 | RA7 — Port A bit 7 (digital I/O) |
| Chân 28 | VDD — Positive supply voltage |
Ứng dụng tiêu biểu
PIC16C55-XTE/SS phù hợp cho 7 Áp dụngs: Consumer Appliance Control, Educational Embedded Platform, Security Keypad Controller, Industrial Sensor Interface, Simple Motor Control Loop, Hobbyist Retro Computing Project, Low-Cost IoT Sensor Node (Edge MCU).
Consumer Appliance Control
The PIC16C55-XTE/SS fits consumer appliance control because its 20 I/O pins directly drive LEDs, relays, and 7-segment displays without external buffers, while 768 bytes of OTP memory holds typical washing-machine or microwave control firmware. Its 4 MHz -XT clock grade provides sufficient throughput for keypad scanning, sensor polling, and timing loops. The 28-SSOP package offers a small footprint for tight appliance control boards, and the Watchdog Timer with on-chip RC oscillator ensures unattended recovery from software lock-up. OTP programming suits high-volume appliance runs where firmware is finalized and per-unit cost dominates.
Được đề xuất
Educational Embedded Platform
The PIC16C55-XTE/SS serves as an educational embedded platform thanks to its 33-instruction PIC16C5X RISC instruction set, which students can master in a single lab. 768 bytes of OTP program memory accommodates introductory C/assembly projects while 24 bytes RAM exercises register-efficient coding. The 4 MHz clock rate permits real-time timing demonstrations without complexity, and 20 I/O pins support breadboard-friendly LED, switch, and sensor experiments. The 28-SSOP package is small but still hand-solderable with practice, making it suitable for university coursework.
Được đề xuất
Security Keypad Controller
The PIC16C55-XTE/SS is well-suited to security keypad controllers because its 20 I/O pins scan a 4x4 matrix keypad (8 pins) while driving status LEDs and a relay output, all without glue logic. The Watchdog Timer with on-chip RC oscillator prevents code-lockup in unattended installations, and Power-on Reset ensures clean startup after brown-out. 768 bytes OTP is sufficient for PIN validation, EEPROM emulation routines, and lockout logic. The 28-SSOP package fits inside compact keypad housings, and the 4 MHz clock rate debounces inputs reliably.
Được đề xuất
Industrial Sensor Interface
The PIC16C55-XTE/SS handles industrial sensor interfaces where it reads multiple analog/digital sensors via its 20 I/O lines, time-stamps events using one of its 8-bit timers, and reports status over a UART bit-banged on spare I/O. 768 bytes OTP accommodates sensor linearization tables and fault-handling routines, while the Watchdog Timer protects against field EMI-induced crashes in factory environments. The 28-SSOP surface-mount package enables conformal-coated PCB designs. PIC16C5X static CMOS operation allows the clock to be slowed during idle periods for low quiescent current.
Được đề xuất
Simple Motor Control Loop
The PIC16C55-XTE/SS is appropriate for simple motor control loops such as brushed DC or stepper sequencing, where its 8-bit timer generates PWM, and its 20 I/O pins drive H-bridge enable lines and direction logic. 768 bytes OTP holds commutation tables and soft-start ramps. The 4 MHz clock rate supports commutation frequencies up to several kHz, adequate for small fan or pump control. The 28-SSOP package fits motor-driver daughterboards, and the Watchdog Timer provides fault recovery when motor stall induces voltage transients.
Được đề xuất
Hobbyist Retro Computing Project
The PIC16C55-XTE/SS powers hobbyist retro-computing projects such as blinking-LED matrixes, model-railway controllers, and replica vintage game consoles where authentic 1990s 8-bit performance is part of the charm. 768 bytes OTP encourages tight assembly coding reminiscent of early microcontroller demos, and 20 I/O pins multiplex address/data buses for simple external memory expansion. The 28-SSOP package solders onto adapter PCBs for breadboard use. The 4 MHz clock rate preserves the slow, observable timing that hobbyists enjoy when stepping through code with an in-circuit emulator.
Được đề xuất
Low-Cost IoT Sensor Node (Edge MCU)
The PIC16C55-XTE/SS can serve ultra-low-cost IoT edge sensor nodes where it reads a sensor, performs simple threshold logic, and bit-bangs a 1-Wire or UART output to a companion radio module. 768 bytes OTP holds calibration tables and protocol stubs, while 24 bytes RAM suffices for immediate sample buffering. The 4 MHz clock and static CMOS design allow clock-throttling during idle to extend battery life. The Watchdog Timer with on-chip RC oscillator prevents hang-up in remote deployments. Choose this part only when BOM cost is paramount and firmware is code-locked.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C55-XTE/SS — 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 | PIC16C55-XTE/P | PIC16C55T-XTE/SS | PIC16C55-XT/P | PIC16C55T-RC/SO | PIC16C55-RCE/SS | PIC16C55AT-04E/SS |
|---|---|---|---|---|---|---|---|
| Package | 28-SSOP | 28-PDIP (through-hole, pin-compatible) | 28-SSOP (same) | 28-PDIP (through-hole, pin-compatible) | 28-SOIC (different lead pitch, pin-compatible) | 28-SSOP (same) | 28-SSOP (same footprint) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 768 B (512 x 12) OTP | 768 B OTP (same) | 768 B OTP (same) | 768 B OTP (same) | 768 B OTP (same) | 768 B OTP (same) | 3 KB (2K x 12) OTP (different die) |
| Maximum Clock | 4 MHz | 4 MHz (same -XT grade) | 4 MHz (same -XT grade) | 4 MHz (same -XT grade) | ~4 MHz RC internal (no crystal) | ~4 MHz RC internal (no crystal) | 4 MHz (-04 grade) |
| RAM Size | 24 B | 24 B (same) | 24 B (same) | 24 B (same) | 24 B (same) | 24 B (same) | 80 B (PIC16C55A die has more RAM) |
| I/O Pins | 20 | 20 (same) | 20 (same) | 20 (same) | 20 (same) | 20 (same) | 20 (same) |
| Speed Grade Suffix | -XT (crystal 100 kHz to 4 MHz) | -XT (same) | -XT (same) | -XT (same) | -RC (internal RC oscillator) | -RC (internal RC oscillator) | -04 (4 MHz grade) |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | NRND | NRND |
Bảo phân biệt quan trọng
- Lowest-cost OTP option within the PIC16C5X 28-pin family (vsPIC16C55AT-04E/SS)
- Surface-mount 28-SSOP packaging while maintaining original PIC16C55 die (vsPIC16C55-XTE/P)
- Same die with extended-temperature option for industrial environments (vsPIC16C55-RCE/SS)
- Compatible with the original PIC16C5X 33-instruction RISC toolchain (vsPIC16F54-I/SS)
Ghi chú thiết kế
PIC16C55-XTE/SS uses OTP EPROM, which cannot be electrically erased - a single failed programming step bricks the device. Always verify the device programmer supports the PIC16C5X family in OTP mode (e.g., MPLAB PM3, Microchip PICKit programmers with proper adapter) and run a dry-run verification pass before issuing the final OTP programming command.
PIC16C55-XTE/SS requires a stable 5V VDD supply; add a 100 nF decoupling capacitor as close to pin 28 as possible, plus a bulk 10 uF electrolytic on the VDD rail. The Power-on Reset circuit triggers cleanly only if VDD rises monotonically within 50 ms; if your power supply has a slow or non-monotonic rise, add an external RC delay to MCLR (pin 1) to extend the reset window.
Route the OSC1/OSC2 traces (pins 4 and 5) as short as possible and shield them with a ground pour to reduce EMI coupling into nearby analog or I/O lines. The 28-SSOP package has a 0.65 mm lead pitch - use 0.15 mm/0.20 mm trace-and-space rules and a microvia-in-pad PCB process if you need to fan out signals from the inner pads. Keep the MCLR/VPP trace short to minimize programming voltage noise.
The PIC16C5X instruction set is 12-bit wide and not source-compatible with newer 14-bit PIC16F devices; code written for PIC16C55 cannot be recompiled for PIC16F54 without rewriting. Estimated: this is a tooling and code-portability risk worth budgeting for when planning migration paths. Always verify the assembler directive list (.asm files) targets the 16C5X core (e.g., MPASMX with p16c55.inc header).
Estimated: at 4 MHz clock and 20 mA I/O sink/source capability, PIC16C55-XTE/SS output edges have ~10 ns rise/fall times. For long PCB traces (>50 mm), add a 33 ohm series resistor near the driver pin to dampen transmission-line ringing, especially on RB0 (external interrupt, pin 15) which may be sensitive to glitches triggering false interrupts.
Thông tin tuân thủ
RoHS compliant per Microchip product page; the 28-SSOP package is lead-free and reflow-solderable. AEC-Q100 not applicable (consumer/industrial MCU, not automotive-qualified).
