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OM13485
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NVT4556UK Demo Board w/ I²C Control.
NVT4556UK Demo Board w/ I²C Control
The OM13485UL is the demo board for the NVT4556UK device with I²C control. The NVT4556 device is built for interfacing a SIM card with a single low-voltage host-side interface. The NVT4556 contains an LDO that can deliver two different voltages, 1.8 V or 3 V, from a typical mobile phone battery voltage, and three level translators to convert the data, RSTn and CLKn signals between a SIM card and a host microcontroller.
製品詳細
Features
Key Features
- Level translation of I/O, RSTn, and CLKn between SIM card and host-side interface with capacitive isolation
- Incorporates ISO-7816-3 shutdown feature for the SIM card signals
- ETSI, IMT2000, and ISO-7816 compliant
- Integrated EMI filters
Connectivity
- VCC input pin provides both host supply voltage and logic level hardware enable/disable pin: source through Host GPIO (ICC < 100 μA)
- I²C-bus interface for device enable and LDO voltage selection
Power Management
- Input voltage range to LDO: 2.5 V to 5.25 V
- Host microcontroller operating voltage range: 1.55 V to 3.6 V
- Support SIM card supply voltages 1.8 V and 3 V
- Low current shutdown mode 3 μA
- 8 kV IEC61000-4-2 ESD protected on all SIM card contact pins
Support
- Supports clock speed beyond 5 MHz clock
- Supports CLK stop mode
User Components
- RST_HOST/EN pin can be programmed as a reset pin or as a device enable/disable pin
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