AT77C101B

Features:

• Sensitive Layer Over a 0.8 µm CMOS Array
• Image Zone: 0.4 x 14 mm = 0.02" x 0.55"
• Image Array: 8 x 280 = 2240 pixels
• Pixel Pitch: 50 µm x 50 µm = 500 dpi
• Pixel Clock: up to 2 MHz Enabling up to 1780 Frames per Second
• Die Size: 1.7 x 17.3 mm
• Operating Voltage: 3 V to 5.5 V
• Naturally Protected Against ESD: > 16 kV Air Discharge
• Power Consumption: 20 mW at 3.3 V, 1 MHz, 25°C
• Operating Temperature Range: -40°C to +85°C
• Resistant to Abrasion: >1 Million Finger Sweeps
• Chip-on-Board (COB), Chip-on-Board (COB) with Connector, or 20-lead Ceramic DIP Available for Development, with Specific Protective Layer



Application

• PDA (Access Control, Data Protection)
• Cellular Phones, SmartPhones (Access e-business)
• Notebook, PC-add on (Access Control, e-business)
• PIN Code Replacement
• Automated Teller Machines, POS
• Building Access
• Electronic Keys (Cars, Home,...)
• Portable Fingerprint Imaging for Law Enforcement
• TV Access



Pinout




Specifications

Parameter	Symbol	Comments	Value	Unit
Positive supply voltage	VCC		GND to 6.5	V
Temperature stabilization power	TPP		GND to 6.5	V
Front plane	FPL		GND to VCC	V
Digital input voltage	RST PCLK		GND to VCC	V
Storage temperature	Tstg		-50 to +95	°C
Lead temperature (soldering, 10 seconds)	Tleads	Do not solder	Forbidden	°C

Description

The AT77C101B is part of the Atmel FingerChip monolithic fingerprint sensor family for which no optics, no prism and no light source are required.

The AT77C101B is a single-chip, high-performance, low-cost sensor based on temperature physical effects for fingerprint sensing.

The AT77C101B has a linear shape, which captures a fingerprint image by sweeping the finger across the sensing area. After capturing several images, Atmel proprietary software can reconstruct a full 8-bit fingerprint image.

The AT77C101B has a small surface combined with CMOS technology, and a Chip-on- Board package assembly. These facts contribute to a low-cost device.

The device AT77C101B delivers a programmable number of images per second, while an integrated analog-to-digital converter delivers a digital signal adapted to interfaces such as an EPP parallel port, a USB microcontroller or directly to microprocessors. No frame grabber or glue interface is therefore necessary to send the frames. These facts make AT77C101B an easy device to include in any system for identification or verification applications.