AT77C105A

Features:

•Thermal Sensitive Layer Over a 0.35 µm CMOS Array
•Image Zone: 0.4 x 11.6 mm
•Image Array: 8 * 232 = 1856 Pixels
•Pixel Pitch: 50 * 50 µm = 500 dpi Resolution
•On-chip 8-bit Analog to Digital Converter
•Serial Peripheral Interface (SPI) - 2 Modes:
Fast Mode at 16 Mbps Max for Imaging
Slow Mode at 200 kbps Max for Navigation and Control
•Die Size: 1.5 * 15 mm
•Operating Voltage: 2.3 to 3.6V
•I/O Voltage: 1.65 to 3.6V
•Operating Temperature Range: -40°C to 85°C
•Finger Sweeping Speed from 2 to 20 cm/Second
•Low Power: 4.5 mA (Image Acquisition), 1.5 mA (Navigation), <10 µA (Sleep Mode)
•Hard Protective Coating (>4 Million Sweeps)
•High Protection from Electrostatic Discharge
•Small Form Factor Packaging


Application

•Scrolling, Menu and Item Selection for PDAs, Cellular or Smartphone Applications
•Cellular and Smartphones-based Security (Device Protection, Network and ISP Access, E-commerce)
•Personal Digital Agenda (PDA) Access
•User Authentication for Private and Confidential Data Access
•Portable Fingerprint Acquisition


Pinout




Specifications

Parameter	Symbol	Comments	Value	Note: Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Power supply voltage	VDDD,VDDA		0.5 to 4.6V
Front plane	FPL		GND to VDD +0.5V
Digital input	SSS, FSS,SCK,MOSI		GND to VDD +0.5V
Input/output pads power supply	VDD_IO		GND to VDD +0.5V
Storage temperature	Tstg		-50 to +95°C
Lead temperature (soldering 10 seconds)	Tleads	Do not solder	Forbidden

Description

Atmel's AT77C105A fingerprint sensor is dedicated to PDA, cellular and smartphone applications. Based on Finger-Chip thermal technology, the AT77C 105A is a linear sensor that captures fingerprint images by sweeping the finger over the sensing area. This product embeds true hardware-based 8-way navigation and click functions as well, as enabling elimination of mechanical joystick devices.