32 bit Recording
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Audio Amp
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Motor driver
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Touch
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Miscellaneous
Touch SOP 14 pins
model number | lsb | Touchkey | PWM-IO | frame rate | Input Type | Output Type | Output Current |
VLN9TS14A-4T4BL | <3uA | 4 | 4 | 128Hz, 4KHz | Floating /
Pull-Low | CMOS / Open-Drain | Large / Constant |
Low Standby 4-bit MCU with Touch Key & LED Controller
The VLN9T series IC is a powerful 4-bit micro-controller based LED control processor with capacitive touch sensing function. The RISC MCU architecture is very easy to program and control, and various applications can be easily implemented. There are maximum 8 channels of PWM-IO LED output. PWM-IO output can provide 4 kinds of analog output current cooperating with 256-level software digital current control to drive different brightness LED. The interactive software-developing tool of βQ-Visioβ is user-friendly and quick for LED pattern programming.
Feature
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Wide operating voltage range: 2.0V to 6.0V.
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400KHz instruction frequency.
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Precisely 400KHz oscillator with built-in resistor Rosc for operating mode. (+/- 1% tolerance)
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Very low standby current for Touch-Key scan to reduce the power consumption.
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Low Voltage Reset (1.8V), Watch-Dog Reset and I/O Port reset are all supported to protect the system.
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Maximum 24 flexible I/Os with optional function: General purpose I/O, PWM-IO output or Touch-Key input.
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Maximum 8-channel PWM-IO output of PE0~3 and PF0~3 shared with I/Os. Each output has other 3 kinds of output option: large sink current, constant sink current (CSC) or drive current.
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Programmable PWM-IO has maximum 256 levels LED brightness with software control. The LED frame rate can be selected from 128Hz, 4KHz and 66KHz.
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Maximum 16 Touch-Keys of PA0~3, PB0~3, PC0~3 and PD0~3 shared with I/Os.
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Touch-Key supports simultaneous multi-key or single-key touch function configured by option.
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Hardware Auto-Calibration function of Touch-Key is provided for touch accuracy to prevent the environment change
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4 kinds of debounce time for Touch-Key press/release detection configured by option in order to keep away from the noise interference.
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2 kinds of hysteresis level: Small Hysteresis Level and Large Hysteresis Level for all Touch-Keys configured by option.
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8 kinds of sensitivity levels can be selected by software programming or external RADJ resistor.
pin assignment
application circuit
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