The Intramascular Electordes fort he Stimulation of Muscles:

Electrode Properties:

The size of the intramascular electrode = 5.5 mm × 5.0 mm × 2.2 mm
Single electrode contains NFC Tag and Microcontroller
Maximum stimulation current is 1 mA
Easly communication with mobile phone
NFC Tag contains energy harvesting circuit which gives maximum power ( 5 mA and 3 V )

NFC TAG Properties:

• The size of the NFC TAG = 1.6 mm × 1.6 mm

• RF interface NFC Forum Type 2 Tag compliant

• I2C interface

• Configurable field detection pin based on open drain implementation that can be

triggered upon the following events:

- RF field presence

- First start of communication

- Selection of the tag only

• 64 byte SRAM buffer for fast transfer of data (Pass-through mode) between the RF and the I2C interfaces located outside the User Memory

• Wake up signal at the field detect pin when:

- New data has arrived from one interface

- Data has been read by the receiving interface

• Clear arbitration between RF and I2C interfaces:

- First come, first serve strategy

- Status flag bits to signal if one interface is busy writing to or reading data from the EEPROM

• Energy harvesting functionality to power external devices (e.g. microcontroller)

• FAST READ command for faster data reading

Microcontroller Properties:

• The size of the microcontroller = 3.0 mm × 3.0 mm

• 8-bit CPU

- Running at up to 20MHz

- Single Cycle I/O Access

- Two-level Interrupt Controller

- Two-cycle Hardware Multiplier

• Memories

- 4/8KB In-system self-programmable Flash Memory

- 128B EEPROM

- 256/512B SRAM

• System

- Power-on Reset (POR)

- Brown-out Detection (BOD)

- Clock Options:

• 16/20MHz Low Power Internal RC Oscillator with:

• 32.768kHz Ultra Low Power (ULP) Internal RC Oscillator

• 32.768kHz External Crystal Oscillator

• External Clock Input

- Single Pin Unified Program Debug Interface (UPDI)

- Three Sleep Modes:

• Peripherals

- One 16-bit Timer/Counter Type A with Dedicated Period Register, Three Compare Channels (TCA)

- One 16-bit Timer/Counter type B with Input Capture (TCB)

- One 12-bit Timer/Counter type D Optimized for Control Applications (TCD)

- One 16-bit Real Time Counter (RTC) Running from External Crystal or Internal RC Oscillator

- One USART with Fractional Baud Rate Generator, Auto-baud, and Start-of-frame Detection

- Master/Slave Serial Peripheral Interface (SPI)

- Master/Slave TWI with Dual Address Match

- Configurable Custom Logic (CCL) with Two Programmable Lookup Tables (LUT)

- Analog Comparator (AC) with Fast Propagation Delay

- 10-bit 115ksps Analog to Digital Converter (ADC)

- 8-bit Digital to Analog Converter (DAC)

- Five Selectable Internal Voltage References: 0.55V, 1.1V, 1.5V, 2.5V and 4.3V

- Automated CRC Memory Scan

- Watchdog Timer (WDT) with Window Mode, with Separate On-chip Oscillator

- Peripheral Touch Controller (PTC)

- External Interrupt on All General Purpose Pins

• I/O and Packages:

- 12 to 22 Programmable I/O Lines

- 14-pin SOIC150

- 20-pin QFN 3x3 and SOIC300