Pin Function Grouping

adrian95

adrian95

Looking at the datasheet of this component, can you group together pins by their functions? for example for Power, 3v3, gnd_1 gnd_2 etc NOTE: If you group them, can you not add the same pin if you already added them in a group? You should know which pin function is common for its function

flux

I’ve made a plan, and started work on it.

Started implementing a plan

#Goal

- Group the HX711 part pins from its datasheet by function, ensuring each pin is assigned exclusively to one of the following categories: regulator/power, ground, analog inputs, digital serial interface, clock, or control/reference.

#Implementation plan

1. **Review the HX711 datasheet pin table**

1. Refer to the provided datasheet (https://cdn.sparkfun.com/datasheets/Sensors/ForceFlex/hx711_english.pdf) and verify the pin table details for the 16-pin SOP package.

2. **Define functional groups based on pin functions**

1. Create the following groups:

- **Regulator/Power:** Pins supplying regulated voltages.

- **Ground:** The ground reference pin.

- **Analog Inputs:** Pins associated with analog measurements.

- **Digital Serial Interface:** Pins used for digital serial communication.

- **Clock:** Pins related to crystal clock input or clock generation.

- **Control/Reference:** Pins used for control signals and reference inputs/outputs.

3. **Assign each pin to a single group according to its datasheet function**

1. **Regulator/Power:**

- Pin 1: VSUP (regulator supply 2.7–5.5V)

- Pin 3: AVDD (analog supply 2.6–5.5V)

- Pin 16: DVDD (digital supply)

2. **Ground:**

- Pin 5: AGND (analog ground)

3. **Analog Inputs:**

- Pin 7: INA- (Channel A negative input)

- Pin 8: INA+ (Channel A positive input)

- Pin 9: INB- (Channel B negative input)

- Pin 10: INB+ (Channel B positive input)

4. **Digital Serial Interface:**

- Pin 12: DOUT (serial data output)

5. **Clock:**

- Pin 13: XO (crystal I/O)

- Pin 14: XI (crystal I/O or external clock input)

6. **Control/Reference:**

- Pin 2: BASE (regulator control output)

- Pin 4: VFB (regulator control input)

- Pin 6: VBG (reference bypass output)

- Pin 11: PD_SCK (power-down control and serial clock input)

- Pin 15: RATE (data rate control input)

4. **Audit the grouping for compliance**

1. Verify that all 16 pins are present.

2. Ensure no pin appears in more than one group and every pin is exclusively assigned to its designated function group.

#Success criteria

- All 16 HX711 pins are assigned to one and only one of the groups: regulator/power, ground, analog inputs, digital serial interface, clock, or control/reference.

- The assignment strictly follows the datasheet pin definitions without duplications or omissions.

Task completed.

0:43

Looking up HX711 datasheet pin grouping functional categories....
Reading "HX711 16 pin SOP pin table pin number pin name description VSUP BASE AVDD VFB AGND VBG INA- INA+ INB- INB+ PD_SCK DOUT XO XI RATE DVDD" in hx711_english.pdf.
Read hx711_english.pdf.

flux

Grouped all 16 HX711 SOP-16 pins into exclusive functional categories and verified there are no duplicates or omissions. Full grouping and audit are saved in the HX711 Pin Function Groups project file.
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RATE
BASE
VSUP
INB-
AGND
DOUT
INB+
PD_SCK
INA+
INA-
XO
XI
VFB
AVDD
VBG
DVDD

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HX711 Pin Function Groups
Source: SparkFun HX711 English datasheet, SOP-16L pin description.
Exclusive Functional Grouping

Table

GroupPins
Regulator/PowerPin 1 VSUP — regulator supply 2.7–5.5V; Pin 3 AVDD — analog supply 2.6–5.5V; Pin 16 DVDD — digital supply 2.6–5.5V
GroundPin 5 AGND — analog ground
Analog InputsPin 7 INA- — Channel A negative input; Pin 8 INA+ — Channel A positive input; Pin 9 INB- — Channel B negative input; Pin 10 INB+ — Channel B positive input
Digital Serial InterfacePin 12 DOUT — serial data output
ClockPin 13 XO — crystal I/O; Pin 14 XI — crystal I/O or external clock input
Control/ReferencePin 2 BASE — regulator control output; Pin 4 VFB — regulator control input; Pin 6 VBG — reference bypass output; Pin 11 PD_SCK — power-down control and serial clock input; Pin 15 RATE — output data rate control input
Audit
  • Total pins assigned: 16 / 16
  • Duplicate assignments: none
  • Missing pins: none
  • All pins are assigned to exactly one group.
Sorted Pin Audit

Table

PinNameAssigned Group
1VSUPRegulator/Power
2BASEControl/Reference
3AVDDRegulator/Power
4VFBControl/Reference
5AGNDGround
6VBGControl/Reference
7INA-Analog Inputs
8INA+Analog Inputs
9INB-Analog Inputs
10INB+Analog Inputs
11PD_SCKControl/Reference
12DOUTDigital Serial Interface
13XOClock
14XIClock
15RATEControl/Reference
16DVDDRegulator/Power

  • Exclusive Functional Grouping

  • Audit

  • Sorted Pin Audit

Documents

Assets

HX711.png

HX711.png

HX711Thumbnail

HX711

defaultDefault

SO-16.kicad_mod

FOOTPRINT_V5Footprint
SO-16.step

SO-16.step

3D3D Model

HX711

HX711 thumbnail
Precision 24-bit analog-to-digital converter (ADC) designed for weigh scales and industrial control applications to interface directly with a bridge sensor. Based on Avia Semiconductor’s patented technology, HX711 is a precision 24-bit analogto-digital converter (ADC) designed for weigh scales and industrial control applications to interface directly with a bridge sensor. The input multiplexer selects either Channel A or B differential input to the low-noise programmable gain amplifier (PGA). Channel A can be programmed with a gain of 128 or 64, corresponding to a full-scale differential input voltage of ±20mV or ±40mV respectively, when a 5V supply is connected to AVDD analog power supply pin. Channel B has a fixed gain of 32. Onchip power supply regulator eliminates the need for an external supply regulator to provide analog power for the ADC and the sensor. Clock input is flexible. It can be from an external clock source, a crystal, or the on-chip oscillator that does not require any external component. On-chip poweron-reset circuitry simplifies digital interface initialization. There is no programming needed for the internal registers. All controls to the HX711 are through the pins.
• Two selectable differential input channels • On-chip active low noise PGA with selectable gain of 32, 64 and 128 • On-chip power supply regulator for load-cell and ADC analog power supply • On-chip oscillator requiring no external component with optional external crystal • On-chip power-on-reset • Simple digital control and serial interface: pin-driven controls, no programming needed • Selectable 10SPS or 80SPS output data rate • Simultaneous 50 and 60Hz supply rejection • Current consumption including on-chip analog power supply regulator: normal operation < 1.5mA, power down < 1uA • Operation supply voltage range: 2.6 ~ 5.5V • Operation temperature range: -40 ~ +85℃ • 16 pin SOP-16 package
#commonpartslibrary #integratedcircuit #analog #digital #converter #sensor

Properties

Integrated Circuit

Avia Semiconductor

HX711

cdn.sparkfun.com/datasheets/Sensors/ForceFlex/hx711_english.pdf

U

creativecommons.org/licenses/by/4.0/

parametric-v1

Pricing & Availability

DPN

Stock

Qty 1

1

2.2K

$0.48644

2

13K–189K

$0.516–$0.6143

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