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Cypress Semiconductor Corporation Cypress Confidential Sales Training 09//25/2012
Synaptics S320x vs. Cypress TMA46x
Mobile Phone Applications
Cypress Delivers the World’s Best Touchscreen Solution
Sales Training 09/25/2012 2Cypress Confidential
CYPRESS INTERNAL USE ONLY
Synaptics S320x OverviewSynaptics S320x is a fully self-contained, ready to use, capacitance sensing IC featuring :Small finger support down to 4 mm diameter
Point contact passive stylus input with automatic pen/finger disambiguation
Supports gloved finger detection
Up to 250 Hz report rate
Support for screen sizes up to 5.9 in
Synaptics S320x finds application in:Mobile phones
Smart remote controls
Digital cameras
Synaptics S320x is a premium solution for touchscreens up to
5.9 in. offering advanced capabilities to enable new user interaction
modes and integration flexibility.
Synaptics S320x
Sales Training 09/25/2012 3Cypress Confidential
CYPRESS INTERNAL USE ONLY
Challenges Using Synaptics S320x
1. Does not provide best-in-class Signal-to-Noise Ratio (SNR)SNR is directly proportional to TX voltage
Synaptics S320x can only provide 3.3 V TX drive inside the chip
2. Cannot support wet-finger tracking without false touchesWaterproofing is required for functionality in the presence of condensation, sweat, or rain
Synaptics S320x cannot do self + mutual capacitance sensing which is required for true waterproofing
3. Low performance CPU, less Flash and RAM; limits data processing within the touch controllerTouch data processing needs to be done in the host processor for optimum performance
TMA46x solves these problemsTMA46x has a 10 V TX drive inside the chip for best-in-application SNR
TMA46x uses both self and mutual capacitance sensing methods simultaneously enabling robust
performance in the presence of water TMA46x contains a 32-bit ARM M0 CPU with 64 k Flash and 8 k RAM for the highest performance
Smart Phone
Requires high performance in the presence of noise and water
TMA46x provides a high performance touchscreen solution
Sales Training 09/25/2012 4Cypress Confidential
CYPRESS INTERNAL USE ONLY
Synaptics S320x vs. TMA46x
Feature S320x TMA46x
Die size 7.8 mm2 14.95 mm2
RX channels 28 9
High voltage TX No 10 V
Sensing method Mutual CapacitanceSelf Capacitance + Mutual
Capacitance
Waterproofing No Yes
Reversible MUX No Yes
CPU core 16-bit RISC 32-bit ARM M0
Power consumption 36 mW 20 mW
Stack ups supportedSITO & DITO, Glass & PET Sensors,
In-CellGFF, GF2, G1F, G1M, PFF, DITO, SITO,
SOL, On-Cell
Smallest package available60-BGA
(5.0 x 5.0 x 0.6 mm)49-WLCSP
(3.9 x 3.9 x 0.6 mm)
Cypress Confidential
The indicated parameters are in the perceived order of importance
Sales Training 09/25/2012 5Cypress Confidential
CYPRESS INTERNAL USE ONLY
Customer objections to adoptingTMA46x over Synaptics 320x1. “Synaptics S320x can provide advanced features like stylus and glove”Advanced features for TMA46x are in development
2. “Synaptics S320x is a lower cost solution”Neutral pricing for TMA46x can be provided when competing against Synaptics
3. “Previous design was using Synaptics S320x” / “More familiar with Synaptics S320x”TMA46x offers better performance than the Synaptics S320x in SNR, waterproofing, and power consumption
Sales Training 09/25/2012 6Cypress Confidential
CYPRESS INTERNAL USE ONLY
Sales Cautions for TMA46x TMA46x has a lower number of RX channelsLimits the ability to conduct full panel single-pass scanning
Increased time needed to scan the full panel
Lower refresh rate with dual-pass scanning configurations
Cypress Confidential
Sales Training 09/25/2012 7Cypress Confidential
CYPRESS INTERNAL USE ONLYDesign Challenges
Noise suppression with thin stack-upsRobust performance in the presence of water
TMA46x SolutionOn-chip 10 V TX boost for higher SNRUses self + mutual capacitance sensing for true waterproofing
Kit: CY3290-TMA400EVKTraining: TrueTouch Sales Webcast WW37Product updates: Gen4 Quick Links
TMA46x Value
Suggested Collateral
TMA46x Win over Synaptics S320x Example – Mobile Handset
Synaptics S320x
Competition
Block Diagram
Smart PhoneTMA46x provides superior noise immunity enabling the flexibility for thinner display stack ups
Gen4 Touchscreen Solution
Communication I2C/SPI
ARM M0 Cortex 48-Mhz CPU
Flash
SRAM
10 V TX Pump
Pro
gram
ma
ble
TX
/RX
Mu
ltiple
xer
ADC
Digital Sequencer
RX Ch. 0
RX Ch. 1
RX Ch. 2
RX Ch. 3
RX Ch. 4
RX Ch. 5
RX Ch. 6
RX Ch. 7
RX Ch. 8
AD
C M
UX
Com
mu
nic
atio
n
Up to
45
TX
/RX
Pin
s (pa
ckage
de
pen
da
nt)
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