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BL6523GX

Public Made by Adom

by adom

BL Shanghai Belling Energy Metering, SOP-16. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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BL6523GX

BL Shanghai Belling · Energy Metering · SOP-16

BL6523GX from BL Shanghai Belling, in a SOP-16. 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 IAN input Current channel A analog input (negative), maximum differential voltage ±660mV with adjustable gain via GAIN register, ESD protection to ±1.5V.
2 IBP input Current channel B analog input (positive), maximum differential voltage ±660mV with adjustable gain via GAIN register, ESD protection to ±1.5V.
3 IBN input Current channel B analog input (negative), maximum differential voltage ±660mV with adjustable gain via GAIN register, ESD protection to ±1.5V.
4 VP input Voltage channel analog input (positive), maximum differential voltage ±660mV with adjustable gain via GAIN register, signal maximum magnitude ±1.5V.
5 VN input Voltage channel analog input (negative), maximum differential voltage ±660mV with adjustable gain via GAIN register, signal maximum magnitude ±1.5V.
6 VREF passive Reference voltage pin with on-chip nominal 2.5V and 5ppm/°C temperature coefficient, accepts external 2.5V reference source, requires 1µF ceramic capacitor to ground.
7 GND power_in Analog circuit reference ground, should connect to analog ground plane or most stable system ground point used by all analog circuits, single connection point to digital ground plane.
8 /RST input Chip reset signal input active low, minimum 32µs low pulse followed by 300µs high required to reset.
9 CF output Active power calibration pulse output providing active power measurement information for meter calibration, 90ms fixed pulse width for low power measurement, half-period width when output period less than 180ms, frequency adjustable via WA_CFNUM register.
10 CLKOUT output Clock output pin working with CLKIN to provide 3.58MHz clock to chip, can drive CMOS load, can use ceramic load capacitors in crystal circuit.
11 CLKIN input Main clock input for analog and digital processing circuits, accepts external clock or parallel crystal connection at 3.58MHz frequency with 22-33pF ceramic load capacitors.
12 GND power_in Analog circuit reference ground, should connect to analog ground plane or most stable system ground point used by all analog circuits.
13 TX output Serial interface UART data output pin at 4800bps fixed baud rate, no parity, 1 stop bit.
14 RX input Serial interface UART data input pin at 4800bps fixed baud rate, no parity, 1 stop bit, multiplexed with /RST reset function.
15 VDD power_in Positive power supply +5V nominal providing analog section power, normal operation requires +4.5V to +5.5V.
16 IAP input Current channel A analog input (positive), maximum differential voltage ±660mV with adjustable gain via GAIN register, ESD protection to ±1.5V.

Key specifications

Parameter Value
Manufacturer BL Shanghai Belling
Package SOP-16
Category Data Acquisition
Pins 16

CAD (KiCad official)

  • Symbol: BL6523GX
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SOP-16 (KiCad packages3D, STEP)
  • 3D model files: bl6523gx-etched.step / bl6523gx-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bl6523gx.step / bl6523gx.glb are the bare package body.

Provenance

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

  • Datasheet: BL Shanghai Belling datasheet (33 pp, sha256 edf0f9cf4bc2f5fb, retrieved 2026-09-29, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF