STV82X6 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'STV82X6' PDF : 97 Pages View PDF
STV82x6
7 Power Supplies
Power Supplies
7.1 Supply Voltages
The STV82x6 supports different power configurations due to its integrated voltage regulators.
Typically, two power supplies, which are grouped into two sets of IC pins, are required.
1. Digital Power Supply (DPS) This supply may be either 3.3 V or 5 V if an external power
transistor is used. The DPS supplies pins VDD1, VDD2 and VDDP.
— In 3.3 V mode, the power is directly supplied to the digital power pins. In this case, the REG
pin is not used and must be connected to the ground.
— 5 V mode requires the use of an external transistor coupled to the integrated voltage
regulator via the REG pin in order to generate a stable 3.3 V supply to the digital power pins.
2. Analog Power Supply (APS) This supply may be either 8 V or 5 V. In both cases, external
resistors are required, except for pin VDDH. The APS supplies pins VDDIF, VDDC, VDDA and
VDDH.
— The 8 V power supply is directly connected to pin VDDH and offers a 2 VRMS dynamic
voltage on SCART outputs. The other analog power pins can be supplied with an 8 V or 5 V
supply through external resistors.
— If only a 5 V power supply is available for pin VDDH, the SCART outputs will be reduced to
1 VRMS. In this case, the SEL5V bit must be set in register ANA_CTRL.
Figure 17: 3.3 V / 8 V or 3.3 V / 5 V Application
3.3 V
DPS
Standby
8 or 5 V
APS
REG
VDD1
VDD2
Digital
3.3 V
Regulator
Digital Core
VDDP
Clock Generator
Analog
3.3 V
Regulator
Analog
Core
VDDH
STV82x6
29/97
Share Link: 
