AS3525 datasheet(12/194 Pages) AMSCO

12 / 194 page

AS3525-A/-B C22O22

Data Sheet, Confidential

www.austriamicrosystems.com

Revision 1.13

- 194

Table 2

Soldering Conditions

Symbol

Parameter

Min

Max

Unit

Note

Tbody

Package Body Temperature

260

°C

Norm IPC/JEDEC J-STD-020C, reflects

moisture sensitivity level only

Tpeak

235

245

°C

Dwell

Solder Profile*

above 217 °C

* austriamicrosystems AG strongly recommends to use underfill.

6.2

Operating Conditions

6.2.1 Supply Voltages

Table 3

Operating conditions for supply input voltages

Symbol

Parameter

Min

Max

Unit

Note

VB1V

DCDC Supply Voltage

1.0

3.6

BVDD

Battery Supply Voltage

3.2

5.5

VBUS

USB VBUS Voltage

4.0

5.5

CHGIN

Charger Supply Voltage

4.5

5.5

Difference of Negative

Supplies

VSS3, VSS1, VSS15, BVSS,

BVSS2, AVSS, DVSS, VSSCP

-0.1

0.1

To achieve good performance, the

negative supply terminals should be

connected to low impedance ground

plane.

6.2.2 Internal Supply Voltages

Following supply voltages for the digital system are generated by the integrated power management

Table 4

Operating conditions for internal internal supply voltages

Symbol

Parameter

Min

Max

Unit

Note

VDDperi

3.0

3.6

digital periphery supply voltage

to be connected to IOVDD

VDDmem

1.7

3.6

digital IO supply for MPMC PADs

to be connected to PVDD

VDDcore

1.08

1.26

digital core supply voltage

to be connected to CVDD; see Note (1)

USBVDDA33T

3.15

3.45

USB analog supply transmit block

to be connected to UVDD

USBVDDA33C

3.15

3.45

USB analog supply common block

to be connected to UVDD

DVDD

Digital Supply Voltage

2.8

3.6

Digital Audio Supply Voltage (LDO2)

AVDD

Analogue Supply Voltage

2.8

3.6

Analog Audio Supply Voltage (LDO1)

Difference of Negative

Supplies

vss_peri, vss_core, vss_mem,

usb_vssa33c, usb_vssa33t

-0.1

0.1

To achieve good performance, the

negative supply terminals should be

connected to low impedance ground

plane.

Note(s)

(1) For the VDD_CORE supply, voltage scaling should be applied to optimize power consumption

and CPU speed performance. For normal operation with fclk (CPU ARM-922T clock) frequencies

below 200 MHz, CVDD (supply of VDD_CORE) can be set to a lower value of 1.10 V. Only for setting

fclk of the CPU to clock frequencies above 200 MHz, the VDD_CORE supply voltage must be set to

1.20 V typical conditions.

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