PIC16F1704-I/SL PIC16F1704 Microcontroller 14Pin for Antminer Hashboard
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PIC16F1704-I/SL 8-Bit Microcontroller – Antminer Hashboard & APW9 PSU Repair
The PIC16F1704-I/SL is an 8-bit RISC microcontroller by Microchip with 7KB flash, 0.5KB RAM, clocked at up to 32MHz in a 14-pin SOP package. It operates from 3.3V to 5V across -40°C to 85°C and includes 8× 10-bit ADC channels, 1× DAC, 2× PWM, 5× timers and I2C / SPI / USART interfaces. Used on Antminer S9, L3+, S17+, T17 hashboards and the APW9 PSU (U12 position) for local monitoring and control functions.
Role on Antminer Hashboards
The PIC16F1704 handles local monitoring tasks — reading ADC channels for temperature and voltage sensing, communicating status to the main control board over I2C or SPI, and driving PWM signals for power sequencing. A failed PIC causes its section of the hashboard to lose monitoring capability, which the firmware interprets as a fault — the miner may shut down the board or report persistent errors even though the ASIC chips themselves are functional.
Replacement Procedure
Remove the board and locate the PIC16F1704 — it is a 14-pin SOP near the monitoring or power sequencing circuit. Desolder with hot air at 300–330°C, clean pads, install the new device with pin 1 aligned and reflow. The replacement PIC must be programmed with the correct firmware for the target board model before or after installation, depending on your programming setup. Verify normal board detection and monitoring readings in the dashboard.
PIC16F1704 Microcontroller Specifications
| Parameter | Value |
|---|---|
| Part Number | PIC16F1704-I/SL |
| Architecture | 8-bit RISC (PIC16) |
| Flash Memory | 7KB |
| RAM | 0.5KB |
| Clock Speed | 32MHz max |
| Supply Voltage | 3.3V – 5V |
| ADC | 8× 10-bit |
| Interfaces | I2C, SPI, USART |
| Package | 14-pin SOP |
| Compatibility | S9, L3+, S17+, T17 hashboard; APW9 PSU U12 |
| Condition | New (original) |
Related Antminer Hashboard Components
- DSS5540X PNP Transistor – S9 / L3+ Hashboard
- MBR540MFS 5A 40V Schottky – S9 / L3+ Hashboard
- MT3608 Boost Module – L3+ / S9 Hashboard
- RB1238H12B6 Cooling Fan – L3+ / S9 / S17 / T17
Sourcing microcontrollers for hashboard repair? Contact us at contact@lys-sz.com for PIC ICs and board-level components.
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