STV0974E/TR STMicroelectronics, STV0974E/TR Datasheet - Page 31

• Manufacturer Part Number: STV0974E/TR
• Description: IC DSP IMAGING VGA CMOS 6X6TFBGA
• Manufacturer: STMicroelectronics

Specifications of STV0974E/TR

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 56-TFBGA
• Operating Temperature (max): 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• For Use With: 497-3891 - KIT DEMO W/VS6552
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-3887-2; STV0974E/TR

4.7
31/61
Functional description
Power management unit
The STV0974 is reset via the internal PowerOnReset cell (POR) or via an external control reset
line. The device reset is controlled by the RST pin.
The POR cell generates an output signal on the POR pin every time that the device external supply
is switched off or the PDN pin is activated.
Figure 18: Reset of
The STV0974 enters into power-up phase in two circumstances:
At power-up, the STV0974 performs its initialization phase and goes into sleep mode.
Figure 19: State machine at power-up
●
●
when the supplies are turned on with PDN pin high.
when the STV0974 exits from power-down (PDN pin rises with supplies already on).
Application with external reset line
STV0974
STV0974
Supplies
turned-off
Supplies Off
Vdd = 0
POR
(left unconnected)
RST
Host control line
Supplies turned on & PDN low
Supplies
turned-on
& PDN high
Sleep mode
Supplies
turned-off
Boot
1
PDN high
Application with POR reset cell
Power-down
STV0974
PDN low
POR
RST
on application
Connection
board
STV0974