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PIC16F1508-I

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Microchip Tech Microcontrollers (MCU/MPU/SOC), SSOP-20-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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PIC16F1508-I

Microchip Tech · Microcontrollers (MCU/MPU/SOC) · SSOP-20-208mil

PIC16F1508-I from Microchip Tech, in a SSOP-20-208mil. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VDD power_in Positive supply pin.
2 RA5 bidirectional General purpose I/O (TTL input, CMOS output) that also serves as the external clock input CLKIN in EC mode, Timer1 clock input T1CKI, NCO1 clock source input, and secondary oscillator connection SOSCI.
3 RA4 bidirectional General purpose I/O (TTL input, CMOS output) that also provides ADC channel AN3, secondary oscillator connection SOSCO, FOSC/4 CLKOUT output, and Timer1 gate input T1G.
4 RA3 input Input-only general purpose pin with IOC and weak pull-up; when MCLRE is set it is the MCLR Reset input with internal pull-up, and VPP is the high-voltage programming pin.
5 RC5 bidirectional General purpose I/O (TTL input, CMOS output) that also provides PWM1 output, CLC1 output, or CWG1A primary output.
6 RC4 bidirectional General purpose I/O (TTL input, CMOS output) that also provides comparator C2 output, CLC2IN1 input, CLC4 output, or CWG1B complementary output.
7 RC3 bidirectional General purpose I/O (TTL input, CMOS output) that also provides ADC channel AN7, comparator negative inputs C1IN3- and C2IN3-, PWM2 output, and CLC2IN0 input.
8 RC6 bidirectional General purpose I/O (TTL input, CMOS output) that also provides ADC channel AN8, NCO1 source output, CLC3IN1 input, and SPI slave select input SS (alternate location, selected via APFCON).
9 RC7/AN9/CLC1IN1/SDO bidirectional General purpose I/O (TTL input, CMOS output) that also provides ADC channel AN9, CLC1IN1 input, and SPI data output SDO.
10 RB7/CLC3/TX/CK bidirectional General purpose I/O (TTL input, CMOS output) that also provides CLC3 output, EUSART asynchronous transmit TX, or EUSART synchronous clock CK.
11 RB6/SCL/SCK bidirectional General purpose I/O (TTL input, CMOS output) that also provides I2C clock SCL (open-drain output) or SPI clock SCK.
12 RB5/AN11/CLC4IN0/RX/DT bidirectional General purpose I/O (TTL input, CMOS output) that also provides ADC channel AN11, CLC4IN0 input, EUSART asynchronous receive RX, or EUSART synchronous data DT.
13 RB4/AN10/CLC3IN0/SDA/SDI bidirectional General purpose I/O (TTL input, CMOS output) that also provides ADC channel AN10, CLC3IN0 input, I2C data SDA (open-drain), or SPI data input SDI.
14 RC2/AN6/C1IN2-/C2IN2- bidirectional General purpose I/O (TTL input, CMOS output) that also provides ADC channel AN6 and comparator negative inputs C1IN2- and C2IN2-.
15 RC1 bidirectional General purpose I/O (TTL input, CMOS output) that also provides ADC channel AN5, comparator negative inputs C1IN1- and C2IN1-, PWM4 output, and NCO1 source output (alternate location, selected via APFCON).
16 RC0/AN4/CLC2/C2IN+ bidirectional General purpose I/O (TTL input, CMOS output) that also provides ADC channel AN4, CLC2 source output, and comparator C2 positive input C2IN+.
17 RA2 bidirectional General purpose I/O with IOC and weak pull-up (Schmitt trigger input, CMOS output) that also provides ADC channel AN2, comparator C1 output, DAC1OUT2 output, Timer0 clock input T0CKI, external interrupt INT, PWM3 output, CLC1 output, and CWG1 fault input CWG1FLT.
18 RA1 bidirectional General purpose I/O with IOC and weak pull-up that also provides ADC channel AN1, ADC positive voltage reference input VREF+, comparator negative inputs C1IN0- and C2IN0-, CLC4 source input, and ICSP programming clock ICSPCLK (also ICD clock ICDCLK).
19 RA0 bidirectional General purpose I/O with IOC and weak pull-up (TTL input, CMOS output) that also provides ADC channel AN0, comparator C1 positive input C1IN+, DAC1OUT1 output, and ICSP programming data ICSPDAT (also ICD data ICDDAT).
20 VSS power_in Ground reference pin.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package SSOP-20-208mil
Category Embedded Processors & Controllers
Pins 20

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Ambient temperature under bias -40 125 °C 308
Storage temperature -65 150 °C 308
Voltage on VDD pin with respect to VSS VDD -0.3 6.5 V PIC16F1508/9, with respect to VSS 308
Voltage on MCLR pin with respect to VSS -0.3 9 V on MCLR pin 308
Voltage on all other pins with respect to VSS -0.3 V on all other pins; upper limit printed as (VDD + 0.3V) 308
Maximum current on VSS pin 250 mA -40°C ≤ TA ≤ +85°C 308
Maximum current on VSS pin 85 mA +85°C ≤ TA ≤ +125°C 308
Maximum current on VDD pin 250 mA -40°C ≤ TA ≤ +85°C 308
Maximum current on VDD pin 85 mA +85°C ≤ TA ≤ +125°C 308
Current sunk by any standard I/O pin 50 mA 308
Current sourced by any standard I/O pin 50 mA 308
Clamp current IK 20 mA VPIN < 0 or VPIN > VDD 308
Operating voltage VDDMIN VDD 2.3 V PIC16F1508/9, FOSC ≤ 16 MHz 309
Operating voltage VDDMIN VDD 2.5 V PIC16F1508/9, 16 MHz < FOSC ≤ 20 MHz 309
Operating voltage VDDMAX VDD 5.5 V PIC16F1508/9 309
Operating ambient temperature TA_MIN TA -40 °C Industrial temperature 309
Operating ambient temperature TA_MAX TA 85 °C Industrial temperature 309
Supply Voltage VDD 2.3 5.5 V FOSC ≤ 16 MHz 311
Supply Voltage VDD 2.5 5.5 V FOSC ≤ 20 MHz 311
RAM Data Retention Voltage VDR 1.7 V Device in Sleep mode 311
Fixed Voltage Reference Voltage, 1x gain (1.024V nominal) VFVR -4 4 % 1x gain; VDD ≥ 2.5V, -40°C ≤ TA ≤ +85°C 311
VDD Rise Rate SVDD 0.05 V/ms Ensures that the Power-on Reset signal is released properly 311
Supply current IDD, LP oscillator IDD 15 31 µA FOSC = 32 kHz, LP oscillator, -40°C ≤ TA ≤ +85°C, VDD 2.3V 313
Supply current IDD, LP oscillator IDD 17 33 µA FOSC = 32 kHz, LP oscillator, -40°C ≤ TA ≤ +85°C, VDD 3.0V 313
Supply current IDD, LP oscillator IDD 21 39 µA FOSC = 32 kHz, LP oscillator, -40°C ≤ TA ≤ +85°C, VDD 5.0V 313
Supply current IDD, HFINTOSC IDD 780 1200 µA FOSC = 16 MHz, HFINTOSC, VDD 2.3V 314
Supply current IDD, HFINTOSC IDD 1000 1550 µA FOSC = 16 MHz, HFINTOSC, VDD 3.0V 314
Supply current IDD, HFINTOSC IDD 1090 1700 µA FOSC = 16 MHz, HFINTOSC, VDD 5.0V 314
Supply current IDD, HS oscillator IDD 1170 1800 µA FOSC = 20 MHz, HS oscillator, VDD 3.0V 315
Supply current IDD, HS oscillator IDD 1555 2300 µA FOSC = 20 MHz, HS oscillator, VDD 5.0V 315
Base power-down current IPD, Low-Power Sleep mode IPD 0.3 4 µA WDT, BOR, FVR and SOSC disabled, all peripherals inactive, Low-Power Sleep mode, VDD 3.0V, +85°C 316
Base power-down current IPD, Low-Power Sleep mode IPD 12 µA WDT, BOR, FVR and SOSC disabled, all peripherals inactive, Low-Power Sleep mode, VDD 3.0V, +125°C 316
Base power-down current IPD, Low-Power Sleep mode IPD 0.4 6 µA WDT, BOR, FVR and SOSC disabled, all peripherals inactive, Low-Power Sleep mode, VDD 5.0V, +85°C 316
Weak pull-up current IPUR 25 100 200 µA VDD = 3.3V, VPIN = VSS 318
Weak pull-up current IPUR 25 140 300 µA VDD = 5.0V, VPIN = VSS 318
Input Low Voltage, I/O port with TTL buffer VIL 0.8 V TTL buffer, 4.5V ≤ VDD ≤ 5.5V 318
Input High Voltage, I/O port with TTL buffer VIH 2 V TTL buffer, 4.5V ≤ VDD ≤ 5.5V 318
Input leakage current, I/O ports, 85°C IIL -125 5 125 nA VSS ≤ VPIN ≤ VDD, pin at high-impedance, 85°C 318
Input leakage current, MCLR IIL -200 50 200 nA VSS ≤ VPIN ≤ VDD, pin at high-impedance, 85°C 318
Output low voltage, I/O ports VOL 0.6 V IOL = 8 mA, VDD = 5V 318
External CLKIN frequency, ECH mode FOSC 20 MHz External Clock (ECH), high-power mode 321
Calibrated HFINTOSC frequency tolerance HFOSC -2 2 % VDD = 3.0V, TA = 25°C 322
Secondary oscillator input frequency range FT1 32.4 32.768 33.1 kHz Oscillator enabled by setting bit T1OSCEN 326
MCLR Pulse Width (low) TMCL 2 µs 325
Low-Power Watchdog Timer Time-out Period TWDTLP 10 16 27 ms VDD = 3.3V-5V, 1:16 prescaler used 325
Power-up Timer Period TPWRT 40 65 140 ms PWRTE = 0 325
Brown-out Reset Voltage, BORV = 0 VBOR 2.55 2.7 2.85 V BORV = 0 325
Brown-out Reset Hysteresis VHYST 0 25 75 mV -40°C ≤ TA ≤ +85°C 325
Low-Power Brown-out Reset Voltage VLPBOR 1.8 2.1 2.5 V LPBOR = 1 325
ADC Integral Error EIL -1.7 1 1.7 LSb VREF = 3.0V 328
ADC Reference Voltage VREF 1.8 V VREF = (VRPOS - VRNEG) 328
Recommended impedance of analog voltage source ZAIN 10 kΩ 328
Comparator Input Offset Voltage VIOFF -60 7.5 60 mV CxSP = 1, VICM = VDD/2 330
Comparator Mode Change to Output Valid TMC2OV 10 µs 330
Cell Endurance (Flash) EP 10 K E/W -40°C ≤ TA ≤ +85°C (Note 1: self-write and block erase) 319
Maximum Junction Temperature TJMAX 150 °C 319
Thermal Resistance Junction to Ambient, 20-pin SSOP JA 87.3 C/W 20-pin SSOP package 319
Thermal Resistance Junction to Case, 20-pin SSOP JC 31.1 C/W 20-pin SSOP package 319

CAD (KiCad official)

  • Symbol: PIC16F1508-I
  • Footprint: Package_SO:SSOP-20_5.3x7.2mm_P0.65mm
  • 3D model: SSOP-20-208mil (KiCad packages3D, STEP)
  • 3D model files: pic16f1508-i-etched.step / pic16f1508-i-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); pic16f1508-i.step / pic16f1508-i.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Microchip Tech datasheet (401 pp, sha256 e20039190e4bde55, retrieved 2026-10-20, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF