AT77C104B-CB12YI datasheet(9/46 Pages) ATMEL

Part #	AT77C104B-CB12YI

Description	FingerChip Thermal Fingerprint Sweep Sensor, Hardware Based, Navigation and Click Function, SPI Interface

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Manufacturer	ATMEL [ATMEL Corporation]

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9

5347F–BIOM–3/08

AT77C104B

5.

Power Consumption and DC Characteristics

The following characteristics are applicable to the operating temperature -40

°C ≤ Ta ≤ +85°C.

Typical conditions are: power supply = 3.3V; T

amb = 25°C; FSCK = 12 MHz (1600 slices per second); duty cycle = 50%

C

LOAD 120 pF on digital outputs unless otherwise specified.

Note:

1. A minimum noise margin of 0.05 V

DD should be taken for Schmitt trigger input threshold switching levels compared to VIL and

V

IH values.

Table 5-1.

Power Requirements

Name

Parameter

Conditions

Test Level

Min

Typ

Max

Unit-

VDD

Positive Supply Voltage

I

2.3

2.5/3.3

3.6

V

IDD

Current on V

DD in Acquisition

Mode

I3

4.5

6

mA

IDDNAV

Current on VDD in Navigation Mode

I

1

1.5

2

mA

I

DDCLI

Current on V

DD in Click Mode

I

0.2

0.3

0.5

mA

IDDSLP

Current on VDD in Sleep Mode

I

10

µA

IDDSTB

Current on VDD in Stand-by Mode

I

Refer to

“Power Management” on page 34

Table 5-2.

Digital Inputs

Logic Compatibility

CMOS

Name

Parameter

Conditions

Test Level

Min

Typ

Max

Unit

I

IL

Low-level Input Current Without

Pull-up Device(1)

V

I = 0V

I

1

µA

I

IH

High-level Input Current Without

Pull-up Device

V

I = VDD

I1

µA

IIOZ

Tri-state Output Leakage Without

Pull-up/down Device

VI = 0V or VDD

IV

1

µA

VIL

Low-level Input Voltage

I

0.3 VDD

V

IH

High-level Input Voltage

I

0.7 V

DD

(1)

V

HYST

Schmitt Trigger Hysteresis(1)

V

DD = 3.3V

Temp = 25

°C

IV

0.400

0.750

V

Table 5-3.

Digital Outputs

Logic Compatibility

CMOS

Name

Parameter

Conditions

Test Level

Min

Typ

Max

Unit

V

OL

Low-level Output Voltage

I

OL = 3 mA

V

DD = 3.3V ±10%

I

0.15 V

DD

(1)

V

IOL = 1.75 mA

V

DD = 2.5V ±5%

VOH

High-level Output Voltage

IOH = -3 mA

VDD = 3.3V ±10%

I0.85 VDD

V

I

OH = -1.75 mA

VDD = 2.5V ±5%

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