PIC16C65A-10/P - 8-Bit 10MHz OTP MCU, 7KB Flash | Microchip
MPN: PIC16C65A-10/P ✗ Tapus ng BuhayPIC16C65A-10/P Ulas
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, RAM, and peripherals on one die. The PIC16C family uses a Harvard RISC architecture with separate program and data buses, enabling single-cycle instruction execution for predictable timing. The '16C' OTP suffix means each unit is programmed once at production and cannot be electrically erased, making the part cost-optimized for high-volume embedded products whose firmware is finalized before deployment.
Key features include three 8-bit timer/counters (Timer0, Timer1, Timer2), a 16-bit Capture/Compare/PWM module, a USART for asynchronous or synchronous serial, a Synchronous Serial Port (SSP) supporting SPI and I2C (master/slave), an 8-bit parallel slave port, and a watchdog timer with on-chip RC oscillator for safe recovery from code lockups. Brown-out reset and power-on reset are integrated for robust power-up behavior across commercial, industrial, and extended temperature grades.
Typical applications include industrial control panels, HVAC damper and motor controllers, automotive body modules, instrumentation front panels, smart appliance control boards, and any 5V through-hole legacy design where pin compatibility with the classic PIC16C6x family is required. The 33 I/O pins and rich peripheral set enable direct interface to keypads, LED or LCD displays, sensors, and serial peripherals without external glue logic.
When designing with this part, allocate a socket for in-system programming if field firmware updates are anticipated, since OTP cannot be rewritten after the windowed or plastic package is sealed. Place a 0.1uF decoupling capacitor within 5 mm of VDD and reserve a footprint for the MCLR pull-up and the standard 4 MHz to 20 MHz crystal with two 15-33 pF load capacitors as recommended in the Microchip PIC16C6x datasheet family.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a faster path from concept to validated production BOM.
Mga alternatibo na pwedeng ilagay na PIC16C65A-10/P — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok PIC16C65A-10/P (parehas na form factor at footprint) — pagkakaiba sa Package, Timers, Instruction Set, Maximum Clock Frequency, Operating Temperature Range.
PIC16C65A-10I/P
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
PIC16C65A-10E/P
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
PIC16C65A-04/P
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC16C65A-04I/P
✅ Drop-In ⚠️ Mga Talaan Hindi NaiwerikmoMagkontak para sa presyo
Tingnan ang Datasheet →PIC16F74-I/P
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC16C65A-10/P Mga Pinakamataas na Rating at Electrical Characteristics
| Core | 8-bit PIC16C RISC |
| Program Memory Type | OTP (One-Time-Programmable) |
| Program Memory Size | 7 KB (4K x 14 words) |
| RAM Size | 192 x 8 bytes |
| EEPROM Size | None (ROM-less data EEPROM) |
| Maksimum na Taktiko ng Oras | 10 MHz |
| Instruction Set | PIC16C, 35 single-word instructions |
| Operating Voltage (Vcc) | 4 V to 6 V |
| Number of I/O Pins | 33 |
| Timers | 3 x 8-bit (Timer0, Timer2); 1 x 16-bit (Timer1 with capture) |
| PWM Modules | 1 x 16-bit Capture/Compare/PWM (CCP) |
| Communication Peripherals | USART (SCI), SSP (SPI / I2C master-slave) |
| Parallel Slave Port | Yes (8-bit PSP on PORTD) |
| Watchdog Timer | Yes (with on-chip RC oscillator) |
| Brown-out Reset | Yes |
| Power-on Reset | Yes |
| Oscillator Type | External (crystal/RC/HS/LP/XT modes) |
| Packhaging | 40-PDIP (0.600 in / 15.24 mm) |
| Uri ng Pagpapasok | Through Hole |
| Hanay ng Temperature na Operasyon | 0C to +70C (commercial; industrial / extended grades also available in family) |
Pin Configuration ng PIC16C65A-10/P
| Pin 1 | MCLR/VPP — Master Clear (reset) input / programming voltage |
| Pin 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Pin 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Pin 4 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| Pin 5 | RA3/AN3/VREF — PORTA bit 3 / analog input 3 / external Vref |
| Pin 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input (open-drain) |
| Pin 7 | RA5/AN4/SS — PORTA bit 5 / analog input 4 / SPI slave select |
| Pin 8 | RE0/RD/AN5 — PORTE bit 0 / parallel slave port read / analog input 5 |
| Pin 9 | RE1/WR/AN6 — PORTE bit 1 / parallel slave port write / analog input 6 |
| Pin 10 | RE2/CS/AN7 — PORTE bit 2 / parallel slave port chip select / analog input 7 |
| Pin 11 | VDD — Positive supply voltage (4.0-6.0 V) |
| Pin 12 | VSS — Ground reference |
| Pin 13 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Pin 14 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| Pin 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Pin 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 I/O |
| Pin 17 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM1 output |
| Pin 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pin 19 | RD0/PSP0 — PORTD bit 0 / parallel slave port bit 0 |
| Pin 20 | RD1/PSP1 — PORTD bit 1 / parallel slave port bit 1 |
| Pin 21 | RD2/PSP2 — PORTD bit 2 / parallel slave port bit 2 |
| Pin 22 | RD3/PSP3 — PORTD bit 3 / parallel slave port bit 3 |
| Pin 23 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pin 24 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pin 25 | RC6/TX/CK — PORTC bit 6 / USART transmit / USART clock |
| Pin 26 | RC7/RX/DT — PORTC bit 7 / USART receive / USART data |
| Pin 27 | RD4/PSP4 — PORTD bit 4 / parallel slave port bit 4 |
| Pin 28 | RD5/PSP5 — PORTD bit 5 / parallel slave port bit 5 |
| Pin 29 | RD6/PSP6 — PORTD bit 6 / parallel slave port bit 6 |
| Pin 30 | RD7/PSP7 — PORTD bit 7 / parallel slave port bit 7 |
| Pin 31 | VSS — Ground reference |
| Pin 32 | VDD — Positive supply voltage (4.0-6.0 V) |
| Pin 33 | RB0/INT — PORTB bit 0 / external interrupt input |
| Pin 34 | RB1 — PORTB bit 1 |
| Pin 35 | RB2 — PORTB bit 2 |
| Pin 36 | RB3 — PORTB bit 3 |
| Pin 37 | RB4 — PORTB bit 4 |
| Pin 38 | RB5 — PORTB bit 5 |
| Pin 39 | RB6/PGC — PORTB bit 6 / ICSP clock (serial programming) |
| Pin 40 | RB7/PGD — PORTB bit 7 / ICSP data (serial programming) |
Tipikal na mga Gamit
PIC16C65A-10/P ay nararapat para sa 6 aplikasyons: Industrial Control Panels, HVAC Damper and Motor Controllers, Automotive Body Modules (Legacy), Instrumentation Front Panels, Smart Appliance Control Boards, Serial-Peripheral Sensor Hubs.
Industrial Control Panels
The PIC16C65A-10/P fits industrial control panels where 33 I/O pins can directly drive relay coils, opto-isolated inputs, keypads, and 7-segment displays without external glue logic. Its 7 KB of OTP program memory holds typical ladder-replacement logic, sequencing state machines, and PID loops, while the 10 MHz instruction rate (100 ns per instruction) gives deterministic scan times well below 10 ms for most control loops. The integrated brown-out reset and watchdog timer protect against brown-outs and code lockups common in factory 24V environments, and the USART plus SSP (SPI/I2C) interface cleanly to HMI displays and remote I/O modules. Compared with discrete logic, the part reduces BOM cost by 40-60% in mid-volume panels.
Inirekomenda
HVAC Damper and Motor Controllers
In HVAC damper and small motor controllers, the PIC16C65A-10/P's 16-bit Capture/Compare/PWM (CCP) module generates the precise PWM signal needed for brushless DC or stepper damper actuators, while the three timers handle zero-cross detection, RPM feedback, and the control tick. The 192-byte RAM easily accommodates a 50-60 Hz phase-angle control loop, and the wide 4.0-6.0 V Vcc tolerance rides out rectified 24 VAC supply droop. Brown-out reset prevents spurious damper movement during brown-outs, an important safety property for fire/smoke dampers. The 40-pin PDIP package remains a strong fit for hand-soldered service boards used by HVAC technicians in the field.
Inirekomenda
Automotive Body Modules (Legacy)
The PIC16C65A-10/P appears in legacy automotive body modules such as seat controllers, mirror adjusters, and interior lighting drivers where 5V logic, 33 I/O, and an integrated USART allow direct drive of relay and LED loads. The extended-temperature PIC16C65A-10E/P variant covers under-dash and under-hood environments from -40C to +125C. Although the OTP memory prevents field firmware updates, that property is actually desirable in safety-critical body electronics where firmware must be locked at production time. For new automotive designs, AEC-Q100-qualified parts such as the PIC16F74-I/P or dsPIC33 are recommended.
Inirekomenda
Instrumentation Front Panels
Bench and laboratory instruments benefit from the PIC16C65A-10/P's combination of a USART, an SPI/I2C SSP, and the 8-bit parallel slave port. The parallel slave port lets the MCU act as a smart front-panel coprocessor to a host DSP or FPGA, offloading key scanning, rotary encoder handling, and LCD driving while the host runs the measurement loop. The 192-byte RAM is sufficient for FIFO buffers between the host bus and the front-panel scan, and the 10 MHz instruction rate keeps scan latency under 50 us. Brown-out reset preserves front-panel state through power glitches that are common in instrument racks.
Inirekomenda
Smart Appliance Control Boards
White-goods control boards - washing machines, dishwashers, ovens - have long used the PIC16C65A-10/P because its 33 I/O can directly sink LED and triac indicator loads while the timers generate the multi-segment wash-cycle timing. The OTP memory locks the firmware at production so that end users cannot accidentally (or intentionally) re-flash their appliance into an unsafe state. Brown-out reset is critical for handling the noisy AC mains supply, and the watchdog timer recovers the controller if firmware enters an illegal state. The 40-pin PDIP package suits hand-repair-friendly appliances where field serviceability matters more than board density.
Inirekomenda
Serial-Peripheral Sensor Hubs
The PIC16C65A-10/P serves as a sensor hub that polls multiple SPI and I2C sensors (temperature, pressure, humidity) and forwards the aggregate over the USART to a host controller. The SSP block supports both SPI master and I2C master/slave, allowing direct connection to popular sensors like the MCP9800 (I2C temperature) and MCP3201 (SPI ADC), while the CCP module can generate a periodic sensor-read interrupt. The 10 MHz clock and 100 ns instruction cycle are fast enough to handle eight polled sensors every 10 ms without saturating the CPU. Its OTP memory makes the firmware tamper-resistant for industrial sensor nodes.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for PIC16C65A-10/P — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | PIC16C65A-10I/P | PIC16C65A-10E/P | PIC16C65A-04/P | PIC16F74-I/P |
|---|---|---|---|---|---|
| Package | 40-PDIP (0.600 in) | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory Type | OTP (7 KB) | OTP (7 KB) | OTP (7 KB) | OTP (7 KB) | Flash (7 KB, reprogrammable) |
| Maximum Clock | 10 MHz | 10 MHz | 10 MHz | 4 MHz (-60%) | 20 MHz (+100%) |
| Operating Voltage | 4.0 V to 6.0 V | 4.0 V to 6.0 V | 4.0 V to 6.0 V | 4.0 V to 6.0 V | 2.0 V to 5.5 V (wider) |
| Temperature Range | 0C to +70C (commercial) | -40C to +85C (industrial) | -40C to +125C (extended) | 0C to +70C | -40C to +85C |
| RAM Size | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes |
| I/O Pins | 33 | 33 | 33 | 33 | 33 |
| In-Circuit Programming | No (OTP) | No (OTP) | No (OTP) | No (OTP) | Yes (ICSP flash) |
| Lifecycle | Obsolete | Obsolete | Obsolete | Obsolete | Active |
Pangunahing mga Pagkakaiba
- Industrial temperature drop-in option (kumpara saPIC16C65A-10I/P)
- Extended temperature drop-in option (kumpara saPIC16C65A-10E/P)
- Lower-cost 4 MHz option (kumpara saPIC16C65A-04/P)
- Flash-based modernization path (kumpara saPIC16F74-I/P)
Talaan ng Disenyo
Because PIC16C65A-10/P uses One-Time-Programmable (OTP) memory, every firmware bug after the programming window closes is a bricked part. Estimated: in a 1000-unit production run, a 1% firmware defect rate consumes 10 units per run as scrap. To minimize this, validate firmware on a flash-based sibling (PIC16F74-I/P in the same 40-PDIP footprint) first, then port the verified image to OTP only after a formal design freeze. Also reserve a socketed prototype area so final OTP units can be swapped without re-soldering during EMC and EMI compliance testing.
Place a 0.1uF decoupling capacitor within 5 mm of each VDD pin (pin 11 and pin 32) and a bulk 10uF aluminum or tantalum capacitor near the VDD trace. The PIC16C65A-10/P's analog reference (VREF on RA3) and A/D inputs (if used) are sensitive to supply noise, so add an LC filter on the AVdd rail or use a separate low-dropout regulator such as MCP1700 if ADC accuracy matters. Brown-out reset must be enabled (BOREN configuration bit set) so that any momentary VDD droop below ~4.0 V triggers a clean reset rather than a corrupted execution path.
Route the OSC1/OSC2 traces (pins 13 and 14) as short as possible, keep them symmetric, and guard them with a ground pour to avoid injecting clock harmonics into adjacent analog or USART lines. The MCLR/VPP pin (pin 1) requires a 10k pull-up to VDD and a 100 nF cap to ground to filter programming transients during factory programming; do not omit the cap or ICSP programming may fail intermittently. For in-system ICSP debugging on the flash-equivalent PIC16F74-I/P, route PGC (RB6, pin 39) and PGD (RB7, pin 40) so the 4-wire MPLAB ICD header can be added later without board rework.
Impormasyon ng Pagsunod sa Kautusan
The PIC16C65A family was launched before the RoHS directive took full effect, and the PDIP package is typically lead-finish (SnPb). The flash-based PIC16F74-I/P is the RoHS-compliant drop-in replacement. No AEC-Q100 qualification for this part; extended-temperature -10E/P variant is for industrial use, not automotive safety.
