CY8C20X34 CYPRESS [Cypress Semiconductor], CY8C20X34 Datasheet - Page 192

• Manufacturer Part Number: CY8C20X34
• Description: Technical Reference Manual (TRM)
• Manufacturer: CYPRESS [Cypress Semiconductor]

VLT_CMP
20.4.10 VLT_CMP
This register is used to read the state of internal supply voltage monitors.
In the table above, note that reserved bits are grayed table cells and are not described in the bit description section. Reserved
bits should always be written with a value of ‘0’. For additional information, refer to the
POR and LVD chapter.
Bit
3
1
0
192
Individual Register Names and Addresses:
VLT_CMP: 1,E4h
Access : POR
Bit Name
1,E4h
NoWrite
LVD
PPOR
Name
Voltage Monitor Comparators Register
7
6
Description
0
1
Reads state of LVD comparator.
0
1
0
1
Bit reads the state of the Flash write voltage monitor.
Reads state of Precision POR comparator. (Only useful with PPOR reset disabled, with PORLEV[1:0]
in the VLT_CR register set to 11b.)
Sufficient voltage for Flash write.
Insufficient voltage for Flash write.
Vdd is above LVD trip point.
Vdd is below LVD trip point.
Vdd is above PPOR trip voltage.
Vdd is below PPOR trip voltage.
5
4
NoWrite
R : 0
3
Register Definitions on page 115
PSoC CY8C20x34 TRM, Version 1.0
2
1,E4h
R : 0
LVD
1
PPOR
R : 0
0
in the