PIC16C56T-HSI/SO - 8-bit OTP MCU 1.75KB EPROM 12 I/O | Microchip
MPN: PIC16C56T-HSI/SO ✓ فعالPIC16C56T-HSI/SO جائزہ
An 8-bit RISC microcontroller is a single-chip computer that executes one instruction per clock cycle from a Reduced Instruction Set Computer (ISA). The PIC16C5x family sits in the legacy PIC hierarchy: PIC16C5x -> PIC16 -> 8-bit PIC microcontroller -> microcontroller -> embedded IC. This positioning makes the PIC16C56T-HSI/SO one of the original low-cost, deterministic controllers still specified in long-lifecycle industrial equipment.
Key features include 20 MHz maximum clock input from the HSI (High-Speed Internal) oscillator configuration, 12 bidirectional digital I/O lines with high-current sink/source capability, an 8-bit real-time timer/counter with 8-bit programmable prescaler, watchdog timer for system reliability, power-on reset, and brown-out detection. The 18-pin SOIC (Small Outline IC) package offers a compact 7.50 mm body width suitable for through-hole-free surface-mount assembly on standard 0.1-inch PCB pitch conversion.
The architecture employs a Harvard memory layout with separate program and data buses, an 11-bit instruction word, and a two-level hardware stack. Its CMOS process gives typical operating current below 2 mA at 5V/20 MHz and standby currents in the microamp range. The HSI suffix indicates the high-speed internal oscillator variant trimmed for stable operation up to 20 MHz without an external crystal, simplifying BOM for cost-sensitive designs.
Typical applications include industrial control logic, appliance controllers, security alarm panels, sensor signal conditioning front-ends, and simple protocol bridges. Its deterministic instruction timing also suits motor-control timing loops and replacement of legacy discrete logic in brownfield redesigns.
When designing with the PIC16C56T-HSI/SO, note that the OTP EPROM cannot be electrically erased - choose this part only for end-of-line programmed units. Provide a robust decoupling network (100 nF + 10 uF) on VDD and a 100 nF bypass on each supply pin pair, and confirm that the MCLR pin is pulled high with a proper rise time.
This page synthesizes distributor pricing, drop-in PIC16C5x alternatives, and engineering design notes not found in a single manufacturer datasheet, giving procurement and embedded engineers an actionable comparison view.
کے لیے ڈراپ اِن متبادل PIC16C56T-HSI/SO — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں PIC16C56T-HSI/SO (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, Program Memory Size, Timers, Program Memory Type, Core Architecture.
PIC16C56-HSI/SO
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C56A-HSI/SO
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC16C56-LP/SO
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C56-RC/SO
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C55T-HSI/SO
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C56T-HSI/SO زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Family | PIC16C5x |
| Series | PIC16C |
| Core | 8-bit RISC (PIC) |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 1.75 KB (1K x 14) |
| Data RAM | 25 bytes |
| I/O Pins | 12 |
| Timers | 1 x 8-bit |
| زیادہ سے زیادہ کلاک فریکوئنسی | 20 MHz |
| Oscillator Type | HSI (High-Speed Internal) |
| سپلائی وولٹیج | 5 V (typical) |
| آپریٹنگ درجہ حرارت | -40C to +85C (Industrial) |
| پیکیج | 18-pin SOIC (7.50 mm body width) |
| ماؤنٹنگ ٹائپ | Surface Mount |
| MSL لیول | 1 (unlimited) |
| Lead-Free / RoHS | Lead-Free finish (per Microchip), RoHS compliance varies by suffix |
| CPU Architecture | Harvard, 11-bit instruction word, 2-level stack |
PIC16C56T-HSI/SO پن کنفیگریشن
| پن 1 | MCLR/Vpp — Master Clear reset (active low) / programming voltage input |
| پن 2 | RA0 — Port A bit 0 (digital I/O) |
| پن 3 | RA1 — Port A bit 1 (digital I/O) |
| پن 4 | OSC1/CLKIN — HSI oscillator input / external clock input |
| پن 5 | VSS — Ground reference |
| پن 6 | RB0/INT — Port B bit 0 / external interrupt input |
| پن 7 | RB1 — Port B bit 1 (digital I/O) |
| پن 8 | RB2 — Port B bit 2 (digital I/O) |
| پن 9 | RB3 — Port B bit 3 (digital I/O) |
| پن 10 | RB4 — Port B bit 4 (digital I/O) |
| پن 11 | RB5 — Port B bit 5 (digital I/O) |
| پن 12 | RB6 — Port B bit 6 (digital I/O) |
| پن 13 | RB7 — Port B bit 7 (digital I/O) |
| پن 14 | VSS — Ground reference (second pin) |
| پن 15 | VDD — +5V supply |
| پن 16 | VDD — +5V supply (second pin) |
| پن 17 | OSC2/CLKOUT — HSI oscillator output / clock output |
| پن 18 | RA2 — Port A bit 2 (digital I/O) |
عام استعمالات
PIC16C56T-HSI/SO کے لیے موزوں ہے 6 ایپلیکیشنs: Industrial Control Logic, Appliance Controllers, Security Alarm Panels, Sensor Signal Conditioning Front-Ends, Simple Protocol Bridges, Replacement of Legacy Discrete Logic.
Industrial Control Logic
The PIC16C56T-HSI/SO suits industrial control logic with deterministic 4-cycle instruction timing and 20 MHz clock throughput that delivers 5 MIPS for state-machine I/O scanning. Its 12 bidirectional I/O lines can source/sink up to 20 mA, directly driving relays, solenoids, and indicator LEDs. The HSI oscillator eliminates external crystal cost in cost-sensitive production volumes, and the 5V supply tolerates legacy industrial backplanes without level translation. Brown-out and watchdog features provide field-grade reliability.
تجویز کردہ
Appliance Controllers
The PIC16C56T-HSI/SO is well-matched to appliance controllers (washing machines, dishwashers, microwave ovens) because its 25 bytes of RAM and 1.75 KB EPROM handle keypad scanning, timer sequencing, and LED/LCD multiplexing without external memory. The OTP EPROM model suits high-volume production where firmware is fixed at end-of-line programming. Industrial temperature grade (-40C to +85C) accommodates under-cabinet thermal environments typical of kitchen appliances.
تجویز کردہ
Security Alarm Panels
The PIC16C56T-HSI/SO integrates sensor polling, zone monitoring, and keypad debouncing on a single chip with no external peripherals required. The watchdog timer detects firmware hangs and triggers a reset, essential for unattended alarm panels. Its 20 MHz instruction throughput lets the firmware scan 12 zones with 1 ms response time, meeting typical security industry response budgets. OTP EPROM prevents unauthorized firmware tamper via firmware reads.
تجویز کردہ
Sensor Signal Conditioning Front-Ends
The PIC16C56T-HSI/SO handles analog signal conditioning front-ends by digitizing sensor inputs via its built-in comparators (where available on the die revision) and outputting conditioned digital signals. With 20 MHz clock and 12 I/O pins, it can drive multiple analog switches and sensors in sequence. CMOS low-power consumption makes it suited to battery-backed sensor nodes that wake periodically to take measurements.
تجویز کردہ
Simple Protocol Bridges
The PIC16C56T-HSI/SO operates as a simple protocol bridge, converting between UART, I2C bit-bang, or custom protocols without an external PHY. The 12 I/O pins can be assigned to TX/RX lines of two serial ports, while the 5 MIPS throughput handles 9600 to 115200 baud with minimal firmware overhead. Legacy 5V supply tolerance matches industrial RS-232/RS-485 transceivers without level shifters.
تجویز کردہ
Replacement of Legacy Discrete Logic
The PIC16C56T-HSI/SO can replace dozens of discrete 74-series logic gates in brownfield redesigns by performing the same Boolean logic, timing, and state-machine functions in firmware. This consolidation reduces PCB area, BOM cost, and assembly errors. The 25-byte RAM supports up to 4-byte state variables for medium-complexity state machines, while the 1.75 KB EPROM fits logic replacement code for 40+ equivalent discrete gates per chip.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC16C56T-HSI/SO — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC16C56-HSI/SO | PIC16C56A-HSI/SO | PIC16C56-LP/SO | PIC16C56-RC/SO | PIC16C55T-HSI/SO |
|---|---|---|---|---|---|---|
| Package | SOIC-18 (7.50 mm) | SOIC-18 (7.50 mm) - same | SOIC-18 (7.50 mm) - same | SOIC-18 (7.50 mm) - same | SOIC-18 (7.50 mm) - same | SOIC-18 (7.50 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 1.75 KB EPROM | 1.75 KB EPROM | 1.5 KB EPROM | 1.75 KB EPROM | 1.75 KB EPROM | 768 B EPROM |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 40 MHz | 4 MHz (LP) | 4 MHz (RC) | 20 MHz |
| I/O Pins | 12 | 12 | 12 | 12 | 12 | 20 (28-pin pkg) |
| Oscillator Type | HSI (High-Speed Internal) | HSI | HSI | LP (low-power) | RC | HSI |
| Data RAM | 25 B | 25 B | 25 B | 25 B | 25 B | 24 B |
| Package / Code | SOIC-18 / T/R | SOIC-18 / tube | SOIC-18 / tube | SOIC-18 / tube | SOIC-18 / tube | SOIC-28 |
اہم امتیازی خصوصیات
- HSI 20 MHz oscillator eliminates external crystal cost (بمقابلہPIC16C56-RC/SO)
- Standard 18-pin SOIC-18 footprint enables PCB reuse (بمقابلہPIC16C55T-HSI/SO)
- Modernized die revision with double the clock ceiling (بمقابلہPIC16C56A-HSI/SO)
ڈیزائن نوٹس
Estimated: VDD current draw at 20 MHz / 5 V is approximately 2 mA active and below 1 uA standby per the PIC16C5x datasheet. Place a 100 nF ceramic decoupling capacitor as close as possible to each VDD pin pair (pins 15 and 16) and a bulk 10 uF tantalum or aluminum-polymer capacitor on the supply rail. PIC16C5x devices are sensitive to supply ripple; the decoupling network stabilizes VDD during oscillator transitions.
MCLR/Vpp (pin 1) must be pulled high with a 10 kohm resistor and a 100 nF capacitor to ground for proper power-on reset. The PIC16C5x OTP EPROM cannot be electrically erased - once programmed, firmware is permanent. Plan for end-of-line programming fixtures or order pre-programmed units from Microchip's factory programming service. Confirm pin 17 (OSC2/CLKOUT) is left disconnected or buffered when using HSI internal mode to prevent oscillator back-driving.
The SOIC-18 package requires a 1.27 mm pitch footprint with at least 0.2 mm copper-to-pad clearance for reliable hand-soldering. Provide a thermal relief pattern on the VDD and VSS pads to ease reflow profiling. Route the MCLR trace as a short, guarded path away from high-current switching nodes; long MCLR traces pick up noise and cause spurious resets in noisy industrial environments.
تعمیل کی معلومات
RoHS-compliant lead-free finish per Microchip product marking. AEC-Q100 not qualified - not intended for automotive safety applications. Confirm halogen-free status with specific Microchip part marking code on shipping reel.
