CY8CMBR2016-24LQXIT Cypress Semiconductor, CY8CMBR2016-24LQXIT Datasheet

CY8CMBR2016-24LQXIT

Manufacturer Part Number

CY8CMBR2016-24LQXIT

Description

Touch Screen Converters & Controllers

Manufacturer

Cypress Semiconductor

Type

Capacitive Touch Controllersr

Datasheet

1.CY8CMBR2016-24LQXIT.pdf (28 pages)

Specifications of CY8CMBR2016-24LQXIT

Rohs

yes

Input Type

16 Key

Supply Voltage

1.71 V to 5.5 V

Supply Current

3.3 mA

Operating Temperature

- 40 C to + 85 C

Package / Case

QFN-48

Maximum Operating Temperature

+ 85 C

Minimum Operating Temperature

- 40 C

Mounting Style

SMD/SMT

Factory Pack Quantity

2500

Supply Voltage - Max

5.5 V

Supply Voltage - Min

1.71 V

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Capacitive Button Controllers

Features

■

Cypress Semiconductor Corporation

Document Number: 001-67921 Rev. *C

Notes

1. Supply variation should not be more than 5% for proper CapSense operation

2. Power consumption calculated with 250 ms scan time, 2% touch time and C

Hardware Configurable Matrix CapSense

❐

Matrix Host Interface Communication

❐

SmartSense™ Auto-Tuning

❐

Noise Immunity

❐

System Diagnostics of CapSense Buttons

❐

Advanced Features

❐

Wide operating range

❐

Low power consumption

❐

Does not require software tools or programming

16 buttons can be configured individually or as a matrix

Supports 3x4 and 4x4 matrix configurations

Industry standard host interface protocols reuse existing host

processor firmware

• Key Scan Interface

• Truth Table Interface

Encoded GPO Interface - minimizes number of pins required

Maintains optimal button performance even in noisy

environments

CapSense parameters dynamically set in runtime

Wide parasitic capacitance (C

Saves time and effort in device tuning

High sensitivity, low noise capacitive sensing algorithm

Strong immunity to RF and AC noise

Low radiated noise emission

Reports any faults at device power up

Button shorts

Improper value of modulating capacitor (C

Parasitic capacitance (C

Flanking Sensor Suppression (FSS) provides robust sensing

even with closely spaced buttons

Buzzer Signal Output

Configurable sensitivity for all buttons

Interrupt line to host to indicate any CapSense button status

change

Serial Debug Data out

• Simplifies production line testing and system debug

1.71–5.5 V

Ideal for both regulated and unregulated battery

applications

Supply current in run mode as low as 20

Deep sleep current: 100 nA

[1]

) out of range

) range (5–40 pF)

•

Controller

MOD

[2]

198 Champion Court

CapSense

)

per button

of each button < 19 pF.

■

Overview

The CY8CMBR2016 CapSense Express capacitive touch

sensing controller incorporates several innovative features to

save time and money to quickly enable a capacitive touch

sensing user interface in your design. It is a hardware

configurable device and does not require any software tools,

firmware coding or device programming. This device is enabled

with

algorithm. SmartSense

tune the user interface during development and production

ramp. This speeds the time to volume and saves valuable

engineering time, test time and production yield loss.

The device supports up to 16 capacitive touch buttons that can

be organized in any format, such as a matrix array. With its

backward compatible key scan interface, it can enable users to

achieve quick-to-market (retrofit) designs in large keypad

applications such as fire alarm control panels, security systems,

and door locks. Any application that requires up to 16 CapSense

buttons can utilize CY8CMBR2016.

The wide operating range of 1.71 V to 5.5 V enables unregulated

battery operation, further saving component cost. This device

supports ultra low-power consumption in both run mode and

deep sleep mode to stretch battery life. In addition, this device

also supports many advanced features, which enhance the

robustness and user interface of the end solution. Some of the

key advanced features include Noise Immunity and FSS. Noise

Immunity improves the immunity of the device against radiated

and conducted noise, such as audio and radio frequency (RF)

noise. FSS provides robust sensing even with closely spaced

buttons. FSS is a critical requirement in small form factor

applications.

The CY8CMBR2016 provides three different host interface

communication modes. These include the industry standard host

interface protocols such as Key Scan Interface and Truth Table

Interface. These two protocols reuse existing host processor

firmware leading to easy conversion of existing mechanical

buttons to CapSense. The third host interface communication is

the Encoded GPO Interface with a 4-bit output, which minimizes

the number of pins required for a button output. These three

outputs are configurable which helps provide a wide variety of

device usage in multiple applications.

Serial Debug Data output gives the critical information about the

design, such as button Cp and raw counts. This further helps in

production line testing.

Industrial temperature range: –40 °C to + 85 °C

48-pin QFN package (6 × 6 × 0.6 mm)

•

Cypress's

Express™ 16 Button Matrix

San Jose

revolutionary

CA 95134-1709

™

auto-tuning ends the need to manually

SmartSense

Revised October 31, 2012

CY8CMBR2016

Controller

•

™

408-943-2600

auto-tuning

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