STW4810CRAT/LF ST-Ericsson Inc, STW4810CRAT/LF Datasheet - Page 19

• Manufacturer Part Number: STW4810CRAT/LF
• Description: IC PWR MNGMNT MULTIMEDIA 84VFBGA
• Manufacturer: ST-Ericsson Inc

Specifications of STW4810CRAT/LF

• Applications: Processor
• Current - Supply: 170µA
• Voltage - Supply: 2.7 V ~ 4.8 V
• Operating Temperature: -30°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 84-VFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Functional description
4.2.2
4.2.3
18/78
POWER OFF / VDDOK
●
●
Figure 5.
Sleep mode
STw4810 goes into sleep mode by different ways.
Whether VCORE, VIO_VMEM and VAUX are programmed to sleep mode or not is indicated
in
PWREN
Table 27
In case of VDDOK falling edge due to under voltage on VCORE or VIO_VMEM
detected, or ‘it_twarn’ bit set to “1” (
(PORn low during a minimum time of 312.5 µs) and restarted with no time-out. (see
Figure 5
reset (PORn still high).
In case of PON falling edge (STw4810 switched off from modem) multimedia processor
is also reset with no time-out. We consider that clean switch off between modem and
multimedia processor is done by software directly.
VDDOK
PORn
.
vcore_monitor
VDDOK block diagram
). In case of VDDOK falling edge because PWREN balls equals “0”, there is no
Under voltage detection
vio_monitor
it_twarn
mask_twarn
&
Digital block
Operating voltage threshold value reached
register reset after
read operation
or PON falling edge
or PORN_VBAT.
Table 18
(10* 32 Khz)
312.5 µs
), then multimedia processor is reset
Reg status
&
VDDOK
STw4810