CY8CMBR2010_12 Datasheet, PDF (1/31 Pages) Cypress Semiconductor – CapSense® Express™ 10-Button Controller

CY8CMBR2010
CapSense^® Express™ 10-Button Controller
10 Button CapSense™ Controller
Features
■ Easy to use capacitive button controller
❐ Ten-button solution configurable through Hardware straps
❐ No software tools or programming required
❐ Ten general-purpose outputs (GPO)
❐ GPOs linked to CapSense buttons
❐ GPOs support direct LED drive
■ SmartSense™ Auto-Tuning
❐ Maintains optimal button performance even in noisy environ-
ment
❐ CapSense parameters dynamically set in runtime
❐ Saves time and effort in device tuning
❐ Wide parasitic capacitance (C_P) range (5 pF - 40 pF)
■ Noise Immunity
❐ Specifically designed for superior noise immunity to external
radiated and conducted noise
❐ Low radiated noise emission
■ System Diagnostics of CapSense buttons - reports faults at
device power up
❐ Button shorts
❐ Improper value of modulator capacitor (C_MOD)
❐ Out of range C_Pvalue
■ Advanced features
❐ Robust sensing even with closely spaced buttons - flanking
sensor suppression (FSS)
❐ User-configurable LED Effects
• On-system power-on
• LED ON Time after button release
❐ Supports analog voltage output (requires external resistors)
❐ Serial Debug Data output
• Simplifies production-line testing and system debug
■ Wide operating voltage range
❐ 1.71 V to 5.5 V – ideal for both regulated and unregulated
battery applications
■ Low power consumption
❐ Average current consumption of 21 µA ^[1] per button
❐ Deep sleep current: 100 nA
■ Industrial temperature range: –40 °C to +85 °C
■ 32-pin Quad Flat No leads (QFN) package
(5 mm × 5 mm × 0.6 mm)
Overview
The CY8CMBR2010 CapSense Express^™ capacitive touch
sensing controller saves time and money, quickly enabling 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 Cypress’s revolutionary SmartSense™
Auto-Tuning algorithm. SmartSense™ Auto-Tuning ends the
need to manually 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 CY8CMBR2010 CapSense controller supports up to ten
capacitive touch sensing buttons and ten General Purpose
Outputs (GPO). The GPO is an active low output controlled
directly by the CapSense input making it ideal for a wide variety
of consumer, industrial, and medical applications. The wide
operating range of 1.71 V to 5.5 V enables unregulated battery
operation, further saving component cost. The same device can
also be used in different applications with varying power
supplies.
This device supports ultra low-power consumption in both run
mode and deep sleep modes 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.
Power-on LED effects provide a visual feedback to the design at
power-on. This improves the aesthetic value of the end product.
System Diagnostics test for design faults at power-on and report
any failures. This simplifies production line testing and reduces
manufacturing costs. Serial Debug data output gives the critical
information about the design, such as button C_P and
signal-to-noise ratio (SNR). This further helps in production line
testing.
Note
1. 21 µA per button (4-buttons used, 3% touch time, 10 pF < Cp of all buttons < 20 pF, Button Scan Rate = 556 ms, with power consumption optimized, Noise Immunity
level “Normal”, CS0 sensitivity “High”).
Cypress Semiconductor Corporation • 198 Champion Court
Document Number: 001-74495 Rev. *A
• San Jose, CA 95134-1709 • 408-943-2600
Revised August 16, 2012