ATMXTS100-CU - maXStylus Active Stylus ASIC | Microchip
MPN: ATMXTS100-CU ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
| 6,000 | $0 | $0.00 |
ATMXTS100-CU Overview
An active stylus controller IC is a specialized mixed-signal device that implements the transmit and signal-processing functions of an active pen system, enabling a battery-powered stylus to communicate position, pressure, and hover information with a capacitive touchscreen that is driven by a companion maXTouch touch controller. Within the system hierarchy, this device sits alongside touch sensors and touch screen controllers inside the human-interface input subsystem of tablets, e-readers, signature pads, and other pen-enabled displays.
Key characteristics identified from verified distributor data include the maXStylus Gen I generation designation, maXTouch series membership, capacitive touch interface classification, and active lifecycle status. This positions the ATMXTS100-CU within Microchip's established maXTouch ecosystem, which is widely deployed in commercial and industrial touchscreen designs.
Architecturally, active stylus ASICs coordinate the stylus-tip signal generation and timing with the host touchscreen controller so that palm rejection, hover detection, and fine-line pen input can be achieved on standard mutual-capacitance panels. Designers typically pair the stylus ASIC with a maXTouch touchscreen controller on the host side to form a complete pen-and-touch subsystem.
Typical applications include active pen input for tablets and 2-in-1 computing devices, digital signature capture terminals, and industrial touch panels requiring stylus precision. In each case the ASIC provides the dedicated stylus-side signal chain that a general-purpose MCU would struggle to replicate with equivalent latency and power efficiency.
A key design consideration is that per available cross-reference information this device is generally not pin-compatible with capacitive touch sensors from competing vendors, so second-sourcing requires careful I/O voltage and interface evaluation.
This page synthesizes distributor pricing channels, verified lifecycle data, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for ATMXTS100-CU — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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Request AlternativesATMXTS100-CU Specifications
| Manufacturer | Microchip Technology |
| Product Series | maXTouch |
| Product Generation | maXStylus Gen I |
| Function | Active stylus ASIC |
| Category | Interface - Sensor, Capacitive Touch |
| Part Status | Active |
| Packaging | Tape & Reel (TR) |
| Standard Package Quantity | 6000 |
ATMXTS100-CU 6000 Pin Configuration Guide
Pin configuration for ATMXTS100-CU (6000 package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for ATMXTS100-CU.
Refer to the datasheet for full pin configuration.
Typical Applications
ATMXTS100-CU is suitable for 6 applications: Active Stylus Input for Tablets, Digital Signature Capture Terminals, E-Reader Pen Annotation, Industrial HMI Touch Panels, Point-of-Sale Touch Displays, Medical Charting and Annotation Stations.
Active Stylus Input for Tablets
The ATMXTS100-CU fits tablet and 2-in-1 pen-enabled designs as the maXStylus Gen I stylus ASIC inside Microchip's maXTouch ecosystem. Its dedicated stylus-side signal chain generates and processes the pen signal that a host maXTouch touchscreen controller decodes, enabling fine-line writing, pressure reporting, and hover detection that finger-only capacitive systems cannot deliver. In use, the ASIC is integrated into the stylus electronics while the host panel pairs with a maXTouch controller; the performance consideration is that pen latency and palm rejection quality depend on tight timing coordination between the two Microchip devices, which is a key advantage of staying within a single-vendor ecosystem.
Recommended
Digital Signature Capture Terminals
Signature pads and point-of-sale signature terminals benefit from the ATMXTS100-CU because active stylus input gives the pen-level precision needed for legible electronic signatures. As a maXStylus Gen I active stylus ASIC in the maXTouch series, it supplies the stylus-side signal generation while the host capacitive touchscreen handles finger navigation. Designers typically pair it with a maXTouch touchscreen controller; the quantified benefit is higher writing fidelity than passive capacitive styli, whose large contact diameter produces coarse strokes, while the trade-off is the added bill-of-materials cost of a powered pen system requiring battery or supercapacitor power management in the stylus body.
Recommended
E-Reader Pen Annotation
E-readers and note-taking displays use the ATMXTS100-CU to add stylus annotation over capacitive touch panels. The maXStylus Gen I ASIC implements the active pen protocol of the maXTouch ecosystem, so annotation strokes track precisely on top of finger-driven page navigation handled by the host maXTouch controller. In the circuit, the ASIC manages stylus transmit timing and signal conditioning, letting the panel distinguish pen from palm. The performance consideration is power: the active pen relies on the ASIC's integrated signal chain rather than host CPU cycles, reducing overall system load, but designers must manage stylus sleep states for battery life.
Recommended
Industrial HMI Touch Panels
Industrial human-machine interface panels that require both gloved-finger touch and precise stylus entry can employ the ATMXTS100-CU as the stylus ASIC alongside a maXTouch host controller. The maXStylus Gen I device handles the pen-side signal chain, enabling operators to make fine selections on dense screens where fingers are imprecise. Its classification under Interface - Sensor, Capacitive Touch and Active lifecycle status support long-term industrial deployments, though designers should verify temperature range in the official datasheet. The trade-off versus resistive stylus solutions is a modern capacitive UI with multi-touch, at the cost of requiring the coordinated Microchip stylus-plus-controller pairing.
Recommended
Point-of-Sale Touch Displays
POS touch terminals combine finger navigation with stylus-driven selections and signatures, a combination the ATMXTS100-CU enables directly. As a maXStylus Gen I active stylus ASIC in Microchip's maXTouch series, it provides the pen-side signal processing that lets a maXTouch host controller discriminate pen input from incidental contact, supporting order entry and signature flows on one panel. Implementation places the ASIC in the stylus and the host controller behind the display; the quantified benefit is palm-safe signature capture, while the design consideration is ensuring the pen's power source survives daily retail duty cycles. Verified package and electrical details should be confirmed in the datasheet.
Recommended
Medical Charting and Annotation Stations
Medical charting stations and diagnostic annotation displays require precise pen input over touch navigation, making the ATMXTS100-CU a fitting stylus-side device. The maXStylus Gen I ASIC generates the active pen signals decoded by a host maXTouch touchscreen controller, allowing clinicians to annotate images with fine strokes while finger gestures handle zooming and scrolling. The active stylus approach avoids the coarse line widths of passive capacitive pens, an important benefit for legibility of medical annotations. Design consideration: validate the ASIC's operating temperature and emissions in the datasheet for the medical enclosure environment, and plan host-controller pairing within the maXTouch family.
Recommended
Engineering reference data for ATMXTS100-CU — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | |
|---|---|---|
| Brand | Microchip Technology | |
| Series | maXTouch | |
| Function | maXStylus Gen I active stylus ASIC | |
| Part Status | Active | Obsolete (not a drop-in substitute) |
| Packaging | Tape & Reel (TR), 6000/reel |
Key Differentiators
- Dedicated active stylus ASIC rather than a generic touch controller (vs Generic capacitive touch controllers)
- Active lifecycle status within the maXTouch ecosystem (vs ATMXT1386XES-CHPSET2)
- High-volume reel supply (vs Broker-sourced equivalents)
Design Notes
Do not assume cross-vendor second sourcing. Published cross-reference guidance notes the ATMXTS100-CU is generally not a pin-compatible replacement for capacitive touch ICs from other vendors due to I/O voltage and interface differences. For supply-chain resilience, qualify a second source at the subsystem level (stylus plus host maXTouch controller pair) rather than expecting a single-chip swap.
Obtain the package outline and pinout directly from the official Microchip datasheet before creating the PCB footprint; the verified web data does not publish the package type. Active stylus ASICs are typically die-scale or wafer-level packages with tight placement tolerance, so follow the Microchip land-pattern application note exactly and verify first-article assembly with X-ray if the package is bottom-terminated.
Battery life in the stylus is governed by the ASIC's active and sleep current, which are not published in the verified data. Profile the device's current consumption across stylus-on, hover, and deep-sleep states on the bench, and implement aggressive sleep-state management in the pen firmware. Confirm the supply voltage range from the datasheet before finalizing the battery and regulator selection.
Compliance Information
Compliance status was not published in the verified web data; confirm RoHS/REACH status on the official Microchip product page.
