• Single-Supply mode, where the MVIO-capable I/O pins are powered at the same voltage level as the non-MVIO
capable pins, i.e., VDD. The user must connect the VDDIO2 pin(s) to the VDD pin(s).
• Dual-Supply mode, where the MVIO-capable I/O pins are supplied by the VDDIO2 voltage, which may be
different from the voltage supplied to the VDD pin(s)
Figure 3-3. FUSE.SYSCFG1 - Enabling Dual Supply Mode
8.8.2.5
System Configuration 1
Name:
SYSCFG1
Offset:
0x06
Default:
0x08
Property:
-
The default value given in this fuse description is the factory-programmed value, and should not be mistaken for the
Reset value.
Bit
7
6
5
4
3
2
1
0
SUT[2:0]
Access
R
R
R
R
R
Default
0
1
0
0
0
Bits 4:3 – MVSYSCFG[1:0]
This bit field controls the power supply mode.
Value
Name
Description
0x00
Reserved
-
0x02
SINGLE
Device used in a single supply configuration.
0x03
Reserved
-
MVSYSCFG[1:0]
Device used in a dual supply configuration.
DUAL
0x01
TB3287
Hardware Configuration
©
2020 Microchip Technology Inc.
Technical Brief
DS90003287A-page 8
