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Product Detailed Parameters
- Description：PSOC BASED - TRUETOUCH
- Series：PSOC™7XL
- Mfr：Infineon Technologies
- Package：Tray
- Touchscreen：2 Wire Capacitive
- Resolution (Bits)：-
- Interface：I2C
- Voltage Reference：-
- Voltage - Supply：1.71V ~ 1.95V, 3V ~ 5.5V
- Operating Temperature：-40°C ~ 105°C (TA)
- Mounting Type：Surface Mount
- Package / Case：128-LQFP
- Supplier Device Package：128-TQFP (14x20)
- Current - Supply：-
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The CYAT847AZS77-42002 is a PSoC™ Automotive Multitouch Generation 7XL slave controller designed for multi-chip capacitive touchscreen applications. It features a 32-bit Arm® Cortex® CPU and supports up to 77 sense I/Os with an effective 20-V drive capability. The device operates within a supply voltage range of 1.71 V to 5.5 V and functions in ambient temperatures from -40°C to 105°C (Automotive-S). It utilizes an I2C interface for host communication at rates up to 1 Mbps.
Feature Summary
- AEC-Q100 qualified for automotive electronics
- Supports water rejection, wet-finger tracking, and glove operation via DualSense technology
- Integrated DSP for data processing and noise filtering
- AutoArmor technology for electromagnetic emission and immunity improvement
Applications
- Automotive infotainment systems
- Vehicle instrument clusters
- Rear-seat entertainment displays
Procurement Notes
Verify the specific ordering suffix 'S' indicates the Automotive-S temperature range (-40°C to 105°C) compared to the standard 'A' variant. Confirm package availability as the datasheet lists TQFP options. Ensure compliance with moisture sensitivity levels if storage conditions are not controlled.
Selection Notes
Select this model for slave nodes in multi-chip configurations requiring 77 sense pins. Choose the 'S' suffix for high-temperature environments exceeding 85°C. Verify that the system design accommodates the required analog supply voltage of 3.0 V to 5.5 V for optimal performance.
Part Context
This component belongs to the Infineon PSoC™ Automotive Multitouch Generation 7XL family. It is part of a multi-chip solution where this slave unit communicates with a master controller to manage large touchscreens up to 35 inches diagonal.
Replacement Considerations
Compatible replacements within the same generation include CYAT847AZA77-42002 for standard temperature ranges or other pin counts like CYAT847AZS88-42002 if additional sense I/Os are required.
FAQ
What is the maximum I2C communication speed supported?
The device supports I2C slave rates of 100 kbps, 400 kbps, and 1 Mbps.
Does this controller support thick glove operation?
Yes, it supports two fingers with thick gloves up to 5-mm thickness using automatic mode switching.
What is the operating temperature range for the 'S' suffix?
The 'S' suffix denotes an extended automotive grade range of -40°C to 105°C.
