beautypg.com

Rainbow Electronics AT77C104B User Manual

Fingerchip, Features, Description

background image

5347B–BIOM–08/04

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

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

Description

This document describes the specifications of Atmel’s AT77C104B fingerprint sensor
dedicated to PDA, cellular and smartphone applications. Based on FingerChip ther-
mal technology, the AT77C104B 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.

Applications

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

Chip-on-board Package

Actual size of sensor

FingerChip

®

Thermal
Fingerprint
Sweep Sensor,

Hardware
Based,

Navigation and
Click Function,

SPI Interface

AT77C104B

Sweep your finger
to make life easier

Table of contents