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ATWINC1500B-MU

IEEE 802.11 b/g/n Network Controller SoC

Atmel Corporation 

4.3 DC Electrical Characteristics

Table 4-3 provides the DC characteristics for the ATWINC1500B digital pads.

Table 4-3. Electrical Characteristics

Characteristic

Min.

Typ.

Max.

Unit

Input Low Voltage VIL

-0.30

0.65

Input High Voltage VIH

Output Low Voltage VOL

VDDIO-0.60

VDDIO+0.30

V

0.45

Output High Voltage VOH

VDDIO-0.50

Output Loading

Digital Input Load

20

pF

6

Pad Drive Strength (regular pads1)

8

13.5

mA

Pad Drive Strength (high-drive pads1)

16

27

Note: 1. The following are high-drive pads: I2C_SCL, I2C_SDA; all other pads are regular.

5 Clocking

5.1 Crystal Oscillator

Table 5-1. Crystal Oscillator Parameters

Parameter

Min.

Typ.

Max.

Unit

Crystal Resonant Frequency

12

26

40

MHz

Crystal Equivalent Series Resistance

50

150

Ω

Stability – Initial Offset1

Stability - Temperature and Aging

-100

-25

100

ppm

25

Note: 1. Initial offset must be calibrated to maintain ±25ppm in all operating conditions. This calibration is performed

during final production testing.

The block diagram in Figure 5-1(a) shows how the internal Crystal Oscillator (XO) is connected to the external

crystal. The XO has 5pF internal capacitance on each terminal XO_P and XO_N. To bypass the crystal

oscillator with an external reference, an external signal capable of driving 5pF can be applied to the XO_N

terminal as shown Figure 5-1(b).

10

A1tmel ATWINC1500B-MU [DATASHEET]

Atmel-42487B-ATWINC1500B-MU_Datasheet_03/2016

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