PIC16LC770-E/SS - 8-bit 20MHz 3.5KB OTP MCU 20-SSOP | Microchip
MPN: PIC16LC770-E/SS ✗ اختتامِ زندگیPIC16LC770-E/SS جائزہ
A microcontroller (microcontroller unit, MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, peripherals, and I/O on one die. The PIC16LC770 belongs to the PIC® 16C family of 8-bit microcontrollers; taxonomically it sits under microcontroller -> embedded controller -> integrated circuit -> semiconductor. The OTP (One-Time-Programmable) variant uses EPROM cells for program storage - a non-volatile but non-reprogrammable technology favored for cost-sensitive production where code is fixed at manufacture.
Key features include 6 channels of 12-bit A/D conversion, 256 bytes of data RAM, two 8-bit and one 16-bit timer/counters, an analog comparator, a synchronous serial port (SSP) supporting both SPI and I²C, and a programmable Low-Voltage Reset (BOR). The 'LC' speed variant draws roughly half the operating current of the standard PIC16C770, while the 'E' suffix marks the industrial extended grade (-40°C to +125°C operating range).
Typical applications include industrial sensor signal conditioning with on-chip ADC, battery-powered handheld instruments needing the 2.5 V minimum supply, simple motor-control loops, and analog-front-end subsystems where 12-bit conversion and an analog comparator coexist on the same die. Because the part is OTP, it suits high-volume fixed-code deployments where reprogramming is not required.
When designing with this part, plan for OTP code permanence - any firmware bug becomes a hardware re-spin. Allocate four ADC channels minimum as spares for diagnostic multiplexing, and verify BOR threshold against your brown-out requirements. This page combines distributor pricing, drop-in alternative coverage, and design notes not bundled in the Microchip datasheet.
کے لیے ڈراپ اِن متبادل PIC16LC770-E/SS — 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 PIC16LC770-E/SS (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, ADC, Core Architecture, Program Memory Size, Program Memory Type.
PIC16LC770-I/SS
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC16LC770/SS
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16LC770T-E/SS
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16LC717-E/SS
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16LC711-04/SO
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16LC770-E/SS زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core | PIC 8-bit RISC |
| Program Memory Type | OTP (One-Time-Programmable EPROM) |
| Program Memory Size | 3.5 KB (2K x 14) |
| Data RAM | 256 x 8 bytes |
| Maximum CPU Frequency | 20 MHz |
| Instruction Execution Time | 200 ns |
| Operating Voltage Range | 2.5 V to 5.5 V |
| I/O Pins | 16 (general-purpose) |
| ADC | 6-channel, 12-bit |
| Timers | 2 x 8-bit, 1 x 16-bit |
| Serial Interfaces | SSP (SPI / I²C) |
| Analog Comparator | Yes |
| Brown-Out Reset (BOR) | Programmable |
| آپریٹنگ درجہ حرارت رینج | -40°C to +125°C (E - extended grade) |
| پیکیج | 20-pin SSOP |
| ماؤنٹنگ ٹائپ | Surface Mount |
PIC16LC770-E/SS پن کنفیگریشن
| پن 1 | MCLR/VPP — Master Clear (Reset) input / Programming voltage input |
| پن 2 | RA0/AN0 — PORTA bit 0 / Analog input channel 0 |
| پن 3 | RA1/AN1 — PORTA bit 1 / Analog input channel 1 |
| پن 4 | RA2/AN2 — PORTA bit 2 / Analog input channel 2 |
| پن 5 | RA3/AN3 — PORTA bit 3 / Analog input channel 3 |
| پن 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| پن 7 | RA5/AN4/SS — PORTA bit 5 / Analog input channel 4 / SPI slave select |
| پن 8 | OSC1/CLKIN — Oscillator input / external clock input |
| پن 9 | OSC2/CLKOUT — Oscillator output / clock output (Fosc/4) |
| پن 10 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| پن 11 | RC1/T1OSI — PORTC bit 1 / Timer1 oscillator input |
| پن 12 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM 1 output |
| پن 13 | RC3/SCL/SCK — PORTC bit 3 / I²C clock / SPI clock |
| پن 14 | RC4/SDA/SDI — PORTC bit 4 / I²C data / SPI data in |
| پن 15 | RC5/SDO — PORTC bit 5 / SPI data out |
| پن 16 | RC6 — PORTC bit 6 |
| پن 17 | RC7 — PORTC bit 7 |
| پن 18 | VSS — Ground reference |
| پن 19 | VDD — Positive supply voltage (2.5 V to 5.5 V) |
| پن 20 | RB7 — PORTB bit 7 |
عام استعمالات
PIC16LC770-E/SS کے لیے موزوں ہے 6 ایپلیکیشنs: Industrial Sensor Signal Conditioning, Battery-Powered Handheld Instruments, Simple Motor Control Loops, Analog Front-End Subsystem, White Goods Control Boards, Automotive Body Electronics (Legacy).
Industrial Sensor Signal Conditioning
The PIC16LC770-E/SS fits industrial sensor signal conditioning because its 6-channel 12-bit ADC (61 uV per LSB at 5 V full-scale) provides 4096 discrete codes for precise transducer reading - sufficient for bridge pressure sensors and RTD interfaces. The 2.5 V to 5.5 V supply range accepts industrial 24 V bus power after step-down to 3.3 V or 5 V. The 'E' grade -40°C to +125°C operation handles factory floor thermal extremes. Inline the comparator for threshold detection without software overhead.
تجویز کردہ
Battery-Powered Handheld Instruments
The PIC16LC770-E/SS suits battery-powered handhelds because the 'LC' speed variant draws approximately half the active current of the PIC16C770, extending runtime on two AA alkaline cells or single-cell Li-ion. The 2.5 V minimum supply keeps operation alive as battery voltage decays, and the 20 MHz core gives 5 MIPS throughput for measurement computation. The analog comparator enables low-power battery-voltage monitoring without waking the CPU.
تجویز کردہ
Simple Motor Control Loops
The PIC16LC770-E/SS handles small DC motor control because the 16-bit timer/counter captures tachometer feedback up to 50 kHz with the 20 MHz clock (one instruction per pulse edge). The PWM-capable CCP module drives FET gate drivers through its I/O pins. The analog comparator implements current-sense overcurrent protection without ADC sampling delay. The 12-bit ADC monitors back-EMF and supply voltage at 60 Hz control-loop rates.
تجویز کردہ
Analog Front-End Subsystem
The PIC16LC770-E/SS excels in analog front-end subsystems where its 6-channel 12-bit ADC, analog comparator, and SSP (SPI/I²C) peripherals coexist on one die. The 12-bit ADC delivers 61 uV per LSB resolution at 5 V FSR - adequate for thermocouple linearization via lookup table. The I²C/SPI peripherals connect to external EEPROM for calibration storage. The 256-byte RAM holds runtime state without external memory.
تجویز کردہ
White Goods Control Boards
The PIC16LC770-E/SS targets white goods appliance control because OTP programming fits fixed firmware, the 20-pin SSOP is industry-standard for board assembly, and the ADC reads thermistor and pressure-sensor inputs directly. The SSP peripheral connects to LED-driver ICs or character-LCD modules. The industrial-extended temperature range (-40°C to +125°C) tolerates under-cabinet and behind-panel heat rise.
تجویز کردہ
Automotive Body Electronics (Legacy)
The PIC16LC770-E/SS historically served automotive body electronics such as seat controllers, mirror adjusters, and lighting modules where 12-bit ADC reads potentiometer positions, and SSP drives peripheral drivers. The 'E' grade -40°C to +125°C tolerates under-hood and cabin thermal stress. New automotive designs should migrate to PIC16F-series with AEC-Q100 qualification and active lifecycle status.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC16LC770-E/SS — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC16LC770-I/SS | PIC16LC770/SS | PIC16LC770T-E/SS | PIC16LC717-E/SS | PIC16LC711-04/SO |
|---|---|---|---|---|---|---|
| Package | 20-SSOP | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 1.75 KB OTP (-50%) |
| Data RAM | 256 B | 256 B | 256 B | 256 B | 256 B | 128 B (-50%) |
| Maximum Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Operating Voltage | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V |
| ADC | 6-ch 12-bit | 6-ch 12-bit | 6-ch 12-bit | 6-ch 12-bit | 6-ch 12-bit | 4-ch 8-bit (-33% resolution) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
اہم امتیازی خصوصیات
- Industrial-extended temperature grade (بمقابلہPIC16LC770-I/SS)
- Same SSOP-20 footprint as PIC16LC770 family (بمقابلہPIC16LC770T-E/SS)
- Higher ADC resolution than PIC16LC711 (بمقابلہPIC16LC711-04/SO)
ڈیزائن نوٹس
PIC16LC770 uses One-Time-Programmable (OTP) EPROM, not flash. Any firmware bug locked into the OTP array requires a physical hardware re-spin - there is no in-system reprogramming. Lock down the firmware build with full regression testing before committing to OTP programming. For prototype or pilot runs, build with flash PIC16F equivalents (e.g. PIC16F877A-I/SS) and migrate to PIC16LC770 only for locked volume production.
Place a 100 nF ceramic decoupling capacitor within 5 mm of the VDD pin (pin 19) and a 10 uF bulk tantalum or aluminum capacitor on the supply rail. The PIC16LC770 draws fast transient currents during peripheral switching; insufficient decoupling causes VDD droop and ADC reference noise. The brown-out reset (BOR) module should be enabled to guarantee safe reset on supply collapse below the configured threshold.
The 6-channel 12-bit ADC achieves 61 uV per LSB at 5 V FSR - adequate for many sensors but easily destroyed by digital switching noise. Route ADC analog traces (AN0-AN5) away from digital switching traces (OSC, PORTB, PORTC), keep analog and digital ground returns separated, and join them at a single-star point under the MCU. Use the AN3 pin as a dedicated VREF+ reference if sensor accuracy requires it.
Estimated: at 20 MHz full-speed operation with all peripherals active, the PIC16LC770-E/SS consumes approximately 5 mA to 15 mA from 5 V VDD, dissipating 25 mW to 75 mW. The 20-SSOP package has a theta_JA of approximately 90 C/W (per Microchip packaging datasheet 00049K), producing a junction-temperature rise of 2.3 C to 6.8 C above ambient - well within the -40 C to +125 C operating range, no heatsink required.
The 20-pin SSOP body is 5.30 mm wide with 0.65 mm pitch - tight for hand-soldering. For prototype assembly, use SSOP-to-DIP breakout boards (e.g. SparkFun SOIC-20) to expose 0.1-inch pin headers. For volume production, follow Microchip SSOP land-pattern recommendations in packaging document 00049K. Keep the MCLR/VPP pin (pin 1) accessible to allow factory tool programming if OTP coding is done post-assembly.
تعمیل کی معلومات
RoHS compliance per Microchip product page (lead-free finish). Not AEC-Q100 qualified - the PIC16LC770 is industrial-grade, not automotive-qualified. For AEC-Q100 automotive MCUs, use PIC16F-series with explicit Q1 or Q100 part suffixes.
