Microchip Technology DT100108, Руководство пользователя

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GUI Description

2019 Microchip Technology Inc. DS50002914A-page 25
4.2.6 MIC33M656 I
2
C Programmable Features
The MIC33M656 I
2
C Programmable Features area contains the items listed in Table 4-3 .
FIGURE 4-6: MIC33M656 I
2
C Programmable Features Area.
This area of the GUI allows the user to modify the device features. For additional
information on the part, refer to the data sheet.
TABLE 4-3: MIC33M656 I
2
C PROGRAMMABLE FEATURES
Panel/Button Items Description
Parameters EN Pin/Bit Enable
Control This check box allows switching between the I
2
C controlled device enable (checked)
and pin controlled enable (unchecked). Leave this box unchecked to enable by jumper
or MCP2221 GP0.
Enable Bit This check box sets the MIC33M656 Enable Bit register. Check the box for regulator
enabling, uncheck for disabling. This bit value is considered only if EN Pin/Bit Enable
Control is checked.
Enable Delay This spin box allows setting the available start time delays.
Current Limit This spin box allows setting the available high-side current limits in order to obtain the
nominal load currents.
ON Time This spin box allows setting the available on-time values that determine slower (high
T
ON
) or faster (lower T
ON
) switching frequencies.
Slew Rate This spin box allows setting the available output slew rates.
Activate output
pull-down when
disabled This check box activates the automatic output pull-down resistor when the MIC33M656
is disabled.
Latch off after
4 OverTemp Cycles This check box sets the latch off after four overtemperature (thermal shutdown) cycles.
Force PWM This check box sets forced PWM mode, regardless of output loading.
Disable 100% Duty
Cycle This check box disables 100% duty cycle operation on the high side when V
IN
is close to
V
OUT
. This feature is available only in High-Range mode (option MIC33M656-SAYMP).
Read/Write These buttons are used to read/write the registers that contain the information
described above.
Output Voltage Voltage This spin box allows setting the available output voltages. If the evaluated chip option is
MIC33M656-HAYMP or MIC33M656-FAYMP, the Low Range option must be selected. If
the evaluated chip is MIC33M656-SAYMP, the High Range must be selected.
Read/Write These buttons are used to read/write the registers that contain the information
described above.
GP0 control Enable GP0
Control This check box allows enable control from the MCP2221 GP0 pin. If unchecked, pin
GP0 is tri-state.
To enable access to this feature and allow pin enable control, uncheck EN Pin/Bit
Enable Control.
The enable jumper must first be removed to prevent short circuiting GP0 with the jumper.
GP0 active This check box sets the state of the MCP2221 GP0 pin. Leave unchecked to disable the
MIC33M656 through Enable pin or check the box to enable the MIC33M656 regulator.