ST7265XEVALMS STMicroelectronics, ST7265XEVALMS Datasheet - Page 37

• Manufacturer Part Number: ST7265XEVALMS
• Manufacturer: STMicroelectronics

Specifications of ST7265XEVALMS

• Lead Free Status / Rohs Status: Supplier Unconfirmed

POWER SUPPLY MANAGEMENT (Cont’d)
6.4.4 Register Description
POWER CONTROL REGISTER (PCR)
Reset Value: 0000 0000 (00h)
Bit 7 = ITPF Voltage Input Threshold Plus Flag
This bit is set by hardware when USBV
over USBV
BV
0: USBV
1:USBV
Bit 6 = ITMF Voltage Input Threshold Minus Flag
This bit is set by hardware when USBV
over USBV
BV
0: USBV
1:USBV
Bit 5 = PLG USB Plug/Unplug detection.
This bit is set by hardware when it detects that the
USB cable has been plugged in. It is cleared by
hardware when the USB cable is unplugged. (De-
tection happens when USBV
V
the PLGIE bit is set, the rising/falling edge of the
PLG bit also generates an interrupt request. This
interrupt is able to wake up the ST7 core from Halt
mode.
0: USB cable unplugged
1: USB cable plugged in
Bit 4 = PLGIE USB Plug/Unplug Interrupt Enable.
This bit is set and cleared by software.
0: Single supply mode: PLG interrupt disabled.
1: Dual supply mode: PLG interrupt enabled (gen-
ITPF
IT+
erates an interrupt on the rising/falling edge of
PLG).
7
DD
DD
or when USBV
drops below USBV
drops below USBV
ITM
DD
DD
F
DD
DD
IT+
IT-
> USBV
> USBV
< USBV
< USBV
PLG
and cleared by hardware when US-
and cleared by hardware when US-
IT+
IT-
PLG
IT+
IT-
IE
DD
drops below USBV
IT+
IT-
VSE
T1
.
.
DD
VSE
T0
rises over USB-
DET
EN
DD
DD
IT-
REG
EN
rises
rises
0
). If
Bit 3:2 = VSET[1:0] Voltage Regulator Output
Voltage.
These bits are set and cleared by software to se-
lect the output voltage of the on-chip voltage regu-
lator (for the V
Bit 1 = DETEN USB Voltage Detector Enable.
This bit is set and cleared by software. It is used to
power-off the USB voltage detector in Stand-alone
mode to reduce unnecessary power consumption,
especially in HALT mode.
0: The USB voltage detector is enabled.
1: The USB voltage detector disabled (ITPF, ITMF
Bit 0 = REGEN Voltage Regulator Enable.
This bit is set and cleared by software.
0: The regulator is completely shutdown and no
1: The on-chip voltage regulator is powered-on.
Related Documentation
AN1529: Extending the current & voltage capabili-
ty on the ST7265 VDDF Supply
VSE
T1
0
0
1
1
and PLG bits are forced high)
current is drawn from the power supply by the
voltage reference.
VSE
T0
0
1
0
1
DDF
Voltage output of the regulator
output).
3.5V
3.4V
3.3V
2.8V
ST7265x
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