LZT 123 1836
36
5.6
Voltage Reference (VREF)
Pin
Name
Direction
Function
65
VREF
Input
Core voltage reference
GS64 provides a 1.8V voltage as a reference to the host side device. The VREF
reference may be used by legacy users, or users of different interface voltage
technology, to implement level-shifter circuits through which IO signals can be safely
interconnected.
VREF output
Parameter
Min
Nom
Max
Unit
VREF output voltage
1.74
1.8
1.86
V
VREF load current
20
mA
Figure 5.6-1 Typical Level shifter arrangement using VREF
