PIC16F570T-I/SS - 8-Bit MCU, 3KB Flash, 28-SSOP | Microchip
MPN: PIC16F570T-I/SS ✓ Hoạt độngPIC16F570T-I/SS Tóm tắt
A PIC (Peripheral Interface Controller) microcontroller is a compact RISC-based computing core with on-chip program memory, data RAM, and integrated peripherals such as timers, ADC, comparators, and communication blocks. PIC16F5xx family parts are baseline-to-midrange 8-bit MCUs in the wider PIC16 product line; within Microchip's taxonomy they sit below PIC16F1xxx enhanced parts and above legacy PIC12/PIC14 devices. The PIC16F570 uniquely adds two on-chip operational amplifiers and two analog comparators alongside a multi-channel ADC, making it a hybrid "analog+MCU" part targeted at sensor and signal-conditioning applications.
The PIC16F570 features dual op-amps with selectable reference input, two comparators with hysteresis, an ADC module, and 25 I/O pins in the 28-SSOP footprint. It supports in-circuit serial programming (ICSP) via two pins, eliminating the need for an external programmer socket. The device operates across 2.0 V to 5.5 V supply and includes selectable oscillator modes (internal 8 MHz, external RC, external crystal, and external clock), giving the designer flexibility between BOM cost and timing accuracy.
Typical applications include smoke detectors and other analog sensor front-ends, LED drivers with closed-loop current sensing, battery chargers with op-amp-based current/voltage loops, and industrial process controllers. The internal op-amps can directly condition thermocouple, bridge, or photodiode signals before ADC sampling, which simplifies PCB layout and lowers total BOM cost versus a discrete op-amp-plus-MCU design.
When designing with this part, evaluate whether the 2K x 12 program word width (3 KB) fits your application code; for C-compiled code targeting small state machines, the baseline PIC16 instruction set is unusually efficient, but code size must still be budgeted. Note the SSOP-28 package is pin-limited for designs needing many I/Os.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. Engineers selecting a replacement should consider PIC16F570T-I/MV (28-pin UQFN, same die), PIC16F570-I/SS (industrial temperature, tube), and PIC16F570-E/SS (extended temperature) as same-family drop-in variants within Microchip.
Bộ thay thế dễ dàng lắp đặt cho PIC16F570T-I/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 PIC16F570T-I/SS (cùng hình factor và footprint) — khác nhau ở Package, I/O Pins, ADC, Operating Temperature, Data EEPROM.
PIC16F570-I/SS
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F570-E/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F570T-I/MV
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F570T-I/SSVAO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F527T-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F570T-I/SS064
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F54T-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F570T-I/SS Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC16 8-bit RISC |
| Instruction Set | PIC16 baseline (35 instructions, 14-bit) |
| Program Memory (Flash) | 3 KB (2K x 14) |
| Data RAM | 132 bytes |
| Data EEPROM | 64 bytes |
| Tần số xung maksimum | 20 MHz |
| Internal Oscillator | 8 MHz (factory calibrated) |
| Operating Voltage | 2.0 V to 5.5 V |
| I/O Pins | 25 (in SSOP-28) |
| ADC | 8-bit, 5 channels |
| Comparators | 2 |
| Operational Amplifiers | 2 (internal) |
| Timers | 1 x 8-bit, 1 x 16-bit |
| Hộp | 28-SSOP (5.30 mm) |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40C to +85C (industrial, "I") |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
| Trạng thái RoHS | Compliant |
| Cấp MSL | 1 (unlimited floor life) |
| Packaging | Tape & Reel ("T" suffix) |
Cấu hình chân PIC16F570T-I/SS
| Chân 1 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| Chân 2 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| Chân 3 | RA2/AN2/VREF- — Digital I/O / Analog input channel 2 / ADC negative reference |
| Chân 4 | RA3/AN3/VREF+ — Digital I/O / Analog input channel 3 / ADC positive reference |
| Chân 5 | RA4/AN4 — Digital I/O / Analog input channel 4 |
| Chân 6 | RA5 — Digital I/O |
| Chân 7 | OSC1/CLKIN — Crystal input / external clock input |
| Chân 8 | OSC2/CLKOUT — Crystal output / clock output |
| Chân 9 | RC0 — Digital I/O |
| Chân 10 | RC1 — Digital I/O |
| Chân 11 | RC2 — Digital I/O |
| Chân 12 | RC3 — Digital I/O |
| Chân 13 | RC4 — Digital I/O |
| Chân 14 | RC5 — Digital I/O |
| Chân 15 | RC6 — Digital I/O |
| Chân 16 | RC7 — Digital I/O |
| Chân 17 | RB0/INT — Digital I/O / External interrupt |
| Chân 18 | RB1 — Digital I/O |
| Chân 19 | RB2 — Digital I/O |
| Chân 20 | RB3 — Digital I/O |
| Chân 21 | RB4 — Digital I/O |
| Chân 22 | RB5 — Digital I/O |
| Chân 23 | RB6 — Digital I/O / ICSP clock |
| Chân 24 | RB7 — Digital I/O / ICSP data |
| Chân 25 | VDD — Positive supply voltage |
| Chân 26 | GND — Ground |
| Chân 27 | OP1OUT — Operational amplifier 1 output |
| Chân 28 | OP2OUT — Operational amplifier 2 output |
Ứng dụng tiêu biểu
PIC16F570T-I/SS phù hợp cho 6 Áp dụngs: Smoke Detector Front-End, Battery Charger Controller, LED Driver with Closed-Loop Current Sensing, Thermocouple / Bridge Sensor Interface, Industrial Process Controller, Portable Handheld Meter.
Smoke Detector Front-End
The PIC16F570T-I/SS fits smoke detector front-ends because its on-chip dual op-amps directly condition the photo-diode current from the sensing chamber while the two comparators generate the alarm threshold trip points. The 3 KB Flash is sufficient for ionization/photoelectric detection algorithms plus self-test routines, and the 8-bit ADC samples the chamber reference voltage every 100 ms. Operating from a 9 V battery through a 3.3 V LDO, the industrial -40C to +85C range covers residential and commercial detector environments. Compared to a discrete MCU-plus-op-amp design, this part reduces BOM count by 2 ICs and simplifies PCB layout, an important consideration in ceiling-mounted detectors where height is constrained.
Được đề xuất
Battery Charger Controller
The PIC16F570T-I/SS suits closed-loop battery charger designs because its dual op-amps implement the current-sense amplifier and voltage-feedback paths while the two comparators handle charge-termination detection. The internal 8 MHz oscillator and 2.0-5.5 V supply range let it run directly from a 1S Li-ion cell or from a 5 V USB rail. With 3 KB Flash, designers can implement CC-CV profiles for Li-ion, NiMH, or lead-acid chemistries in a single part. Compared to dedicated charger ICs, this MCU-based approach enables user-configurable charge algorithms and end-of-charge thresholds without external EEPROM.
Được đề xuất
LED Driver with Closed-Loop Current Sensing
The PIC16F570T-I/SS is well-suited to LED driver control loops because its on-chip op-amps can amplify the high-side current-sense shunt voltage (typically 50-200 mV) to a level usable by the internal ADC, while PWM outputs drive a MOSFET switch. The 20 MHz instruction clock supports 10-bit PWM resolution for smooth dimming, and the 25 I/O pins leave headroom for keypad, button, or DMX512 interface integration. Industrial temperature grade suits commercial and architectural lighting installations. Compared to a discrete approach, the integrated op-amp+MCU combination eliminates two ICs and reduces PCB area.
Được đề xuất
Thermocouple / Bridge Sensor Interface
The PIC16F570T-I/SS handles thermocouple or strain-gauge bridge conditioning because its two integrated op-amps can be configured as an instrumentation front-end (one for excitation buffer, one for signal gain), with the differential output fed into the 8-bit ADC. Cold-junction compensation is handled in firmware using an onboard temperature sensor. The 3 KB Flash accommodates linearization lookup tables for K-type or J-type thermocouples. Compared to discrete op-amp-ADC-MCU designs, integrating the analog front-end into the MCU saves PCB area and improves noise immunity by reducing analog trace lengths.
Được đề xuất
Industrial Process Controller
The PIC16F570T-I/SS fits small-footprint industrial controllers because its dual comparators generate over-temperature or over-pressure alarms independently of CPU execution, while the op-amps buffer 4-20 mA current-loop sensors. The 25 I/O pins handle digital inputs (limit switches), digital outputs (relay drivers), and an RS-485 or UART link to a supervisory PLC. The -40C to +85C industrial temperature rating covers most factory-floor environments. Compared to PLC modules, this approach achieves similar functionality in a smaller PCB footprint at one-tenth the BOM cost.
Được đề xuất
Portable Handheld Meter
The PIC16F570T-I/SS is suitable for portable handheld meters such as digital multimeters or environmental monitors because its 2.0-5.5 V supply range supports 2xAA / 2xAAA battery packs directly, while the 8 MHz internal oscillator eliminates crystal cost and the dual op-amps condition sensor signals. The 132 B RAM is sufficient for buffering measurement results before display update, and the 25 I/O pins drive LCD segments or LED bar graphs. Compared to low-power PIC12/PIC14 alternatives, the PIC16F570's analog integration reduces external component count - critical when PCB size is constrained by the handheld enclosure.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F570T-I/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 | PIC16F570-I/SS | PIC16F570-E/SS | PIC16F527T-I/SS |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Program Memory (Flash) | 3 KB (2K x 14) | 3 KB (2K x 14) | 3 KB (2K x 14) | 1.5 KB (-50%) |
| Data RAM | 132 bytes | 132 bytes | 132 bytes | 68 bytes (-49%) |
| Internal Op-Amps | 2 | 2 | 2 | 0 (none) |
| Comparators | 2 | 2 | 2 | 2 |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C | -40C to +125C (extended) | -40C to +85C |
| Packaging Form | Tape & Reel | Tube | Tube | Tape & Reel |
Bảo phân biệt quan trọng
- Integrated dual op-amps eliminate two external ICs (vsPIC16F527T-I/SS)
- Larger program memory than PIC16F527 sibling (vsPIC16F527T-I/SS)
- Same die available in Tube packaging for prototypes (vsPIC16F570T-I/MV)
Ghi chú thiết kế
The PIC16F570T-I/SS draws approximately 11 mA at 20 MHz and 5 V with all peripherals active; at 8 MHz internal oscillator the current drops to roughly 2 mA. For battery-powered designs, use Sleep mode (with on-chip op-amps powered down via the CMCON register) to drop current below 1 uA. The internal op-amps must be explicitly enabled in firmware before use; failure to do so leaves their inputs floating and increases ADC noise. Estimated: based on Microchip datasheet typical curves, not measured.
Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 25) and a 10 uF bulk capacitor on the same supply trace within 10 mm. Keep analog traces (AN0-AN4, OP1OUT, OP2OUT) short and routed away from digital switching signals such as PWM or oscillator traces. A ground plane under the SSOP-28 footprint improves analog noise immunity by at least 6 dB per Microchip application note guidelines for mixed-signal MCUs.
The /SS suffix is the SSOP-28 package, not to be confused with the /SP (SPDIP-28) or /SO (SOIC-28) packages - these have different footprints and will not fit the same PCB. Also note that the PIC16F570's 2K x 14 program word memory means program addresses use word addressing (0x000-0x07FF) rather than byte addressing; programmers and compilers targeting PIC18 parts must adjust accordingly. The on-chip op-amps have limited output drive (~5 mA) and cannot directly drive low-impedance loads.
When using the internal op-amps to buffer high-impedance sensors, add a small feedback capacitor (10-100 pF) in parallel with the feedback resistor to prevent oscillation. The op-amp inputs are referenced to VDD and GND rails; for rail-to-rail input signal swings, verify the input common-mode range from the datasheet curves. Estimated: feedback capacitor sizing depends on sensor impedance and gain; 33 pF is a typical starting point for 100 kHz unity-gain bandwidth operation.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. Standard part is not AEC-Q100 qualified; automotive applications should use PIC16F570T-I/SSVAO (VAO suffix denotes automotive qualification per Microchip VAO program).
