Component: DAC (MCP4725) (MCP4725) (Analog Output): Difference between revisions

Latest revision as of 16:45, 25 June 2026

Author	Matrix TSL
Version	1.0
Category	Analog Output

DAC (MCP4725) component

Component to drive a 12-bit digital to analogue converter (DAC) IC from Microchip via an I2C interface.

Detailed description

No detailed description exists yet for this component

Examples

No additional examples

Macro reference

Disable

	Disable
Disables the DAC output.
- VOID	Return

Enable

	Enable
Enables the DAC Output.
- VOID	Return

Initialise

	Initialise
Configures the I2C peripheral ready for communications and initialises the internal variables. DAC needs to be enabled before any output voltage can be generated.
- VOID	Return

SetOutput

	SetOutput
Sets the output voltage of the DAC 12-Bit: Range 0-4095
- UINT	DAC_Value
The value to output to the DAC
- VOID	Return

Property reference

	Properties
	Disabled Pull Down
Sets the pull down resistance when the IC's DAC output is disabled.
	Vref Voltage
Reference Voltage, Used to calculate the Voltage resolution.
	Steps
Number of discrete output states available from the DAC.
	Control Bits
Number of digital control bits
	Resolution
Maximum output resolution based on number of control bits.
	Voltage Resolution
Specifies the Resolution per digital bit in terms of Voltage.
	I2C Connections
	User Address Bits
Specifies the bottom three "user" bits of the I2C 7-bit address
	Channel
Channel selection
	SDA
Pin used for SDA (data signal)
	SCL
Pin used for SCL (clock signal)
	Stop Delay
On older microcontroller devices there is a potential for the I2C hardware channel to lock up if there is not a 10ms delay between an I2C stop event and the next I2C start event. Most modern microcontrollers will not have a problem so this property can be disabled to speed up the I2C communications.
	Baud Select
Baud rate option selector
	Baud Rate
Baud rate to be used
	Simulation
	Simulate Comms

Component Source Code

Please click here to download the component source project: FC_Comp_Source_DAC_MCP4725.fcfx

Please click here to view the component source code (Beta): FC_Comp_Source_DAC_MCP4725.fcfx

@@ Line 15: / Line 15: @@
 Component to drive a 12-bit digital to analogue converter (DAC) IC from Microchip via an I2C interface.
-==Component Source Code==
+==Detailed description==
-Please click here for the component source code: [https://www.flowcode.co.uk/wikicopy/componentsource/FC_Comp_Source_DAC_MCP4725.fcfx FC_Comp_Source_DAC_MCP4725.fcfx]
-==Detailed description==
@@ Line 38: / Line 42: @@
 ==Examples==
@@ Line 54: / Line 66: @@
 ''<span style="color:red;">No additional examples</span>''
 ==Macro reference==
+===Disable===
 {| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 |-
 | width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
-| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''SetOutput'''
+| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Disable'''
 |-
-| colspan="2" | Sets the output voltage of the DAC 12-Bit: Range 0-4095&nbsp;
+| colspan="2" | Disables the DAC output.&nbsp;
-|-
-|-
-| width="10%" align="center" | [[File:Fc9-u16-icon.png]] - UINT
-| width="90%" | DAC_Value
 |-
-| colspan="2" | The value to output to the DAC&nbsp;
 |-
 | width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
@@ Line 75: / Line 93: @@
+===Enable===
 {| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 |-
 | width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
-| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Disable'''
+| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Enable'''
 |-
-| colspan="2" | Disables the DAC output.&nbsp;
+| colspan="2" | Enables the DAC Output.&nbsp;
 |-
 |-
@@ Line 88: / Line 107: @@
+===Initialise===
 {| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 |-
 | width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
-| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Enable'''
+| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Initialise'''
 |-
-| colspan="2" | Enables the DAC Output.&nbsp;
+| colspan="2" | Configures the I2C peripheral ready for communications and initialises the internal variables. DAC needs to be enabled before any output voltage can be generated.&nbsp;
 |-
 |-
@@ Line 101: / Line 121: @@
+===SetOutput===
 {| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 |-
 | width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
-| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Initialise'''
+| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''SetOutput'''
+|-
+| colspan="2" | Sets the output voltage of the DAC 12-Bit: Range 0-4095&nbsp;
+|-
 |-
-| colspan="2" | Configures the I2C peripheral ready for communications and initialises the internal variables. DAC needs to be enabled before any output voltage can be generated.&nbsp;
+| width="10%" align="center" | [[File:Fc9-u16-icon.png]] - UINT
+| width="90%" | DAC_Value
 |-
+| colspan="2" | The value to output to the DAC&nbsp;
 |-
 | width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
 | width="90%" style="border-top: 2px solid #000;" | ''Return''
 |}
@@ Line 202: / Line 226: @@
 | colspan="2" | &nbsp;
 |}
+==Component Source Code==
+Please click here to download the component source project: [https://www.flowcode.co.uk/wiki/componentsource/FC_Comp_Source_DAC_MCP4725.fcfx FC_Comp_Source_DAC_MCP4725.fcfx]
+Please click here to view the component source code (Beta): [https://www.flowcode.co.uk/FlowchartView/?wfile=componentsource/FC_Comp_Source_DAC_MCP4725.fcfx FC_Comp_Source_DAC_MCP4725.fcfx]

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