NVT4556 - SIM card interface level translator with I2C-bus control and LDO

NVT4556是NXP恩智浦公司的一款I²C电压转换器产品，NVT4556是SIM card interface level translator with I2C-bus control and LDO，本站介绍了NVT4556的封装应用图解、特点和优点、功能等，并给出了与NVT4556相关的NXP元器件型号供参考。

NVT4556 - SIM card interface level translator with I2C-bus control and LDO - I²C电压转换器 - I²C - 恩智浦

产品描述

The NVT4556 device is built for interfacing a SIM card with a single low-voltage host-sideinterface. The NVT4556 contains an LDO that can deliver two different voltages, 1.8 V or3 V, from a typical mobile phone battery voltage, and three level translators to convert thedata, RSTn and CLKn signals between a SIM card and a host microcontroller.

The NVT4556 VCC pin provides power to the host side I/Os and doubles as an enable pin,for this reason it can be connected to a GPIO that matches the host side voltage. The totalcurrent draw from the VCC pin is only 100 μA maximum. The NVT4556 also uses theI2C-bus interface to enable normal operation and to select either 1.8 V or 3 V for the SIMcard power supply. The NVT4556 can also disable the LDO functionality while maintainingthe level translator paths so that the user can use a system-controlled regulator to powerthe SIM card power supply. The NVT4556 can enable users to provide second and thirdSIM card functionality with a low-voltage one host SIM port, at the same time reducing thenumber of GPIOs used in the system. The NVT4556 is compliant with all ETSI, IMT-2000and ISO-7816 SIM/Smart card interface requirements.

The NVT4556 is available in a 12-pin WLCSP package and has three factoryprogrammed slave address options.

产品特性和优势

Support SIM card supply voltages 1.8 V and 3 V
Input voltage range to LDO: 2.5 V to 5.25 V
Host microcontroller operating voltage range: 1.55 V to 3.6 V
VCC input pin provides both host supply voltage and logic level hardwareenable/disable pin: source through Host GPIO (ICC<100 μA)
RST_HOST/EN pin can be programmed as a reset pin or as a device enable/disablepin
Level translation of I/O, RSTn and CLKn between SIM card and host-side interfacewith capacitive isolation
I2C-bus interface for device enable and LDO voltage selection
Low current shutdown mode < 3 μA
Supports clock speed beyond 5 MHz clock
Supports CLK stop mode
Integrated EMI filters
Incorporates ISO-7816-3 shutdown feature for the SIM card signals
ETSI, IMT2000 and ISO-7816 compliant
±8 kV IEC61000-4-2 ESD protected on all SIM card contact pins
Pb-free, Restriction of Hazardous Substances (RoHS) compliant and free of halogenand antimony (Dark Green compliant)
Available in 12-pin WLCSP package (1.205 mm × 1.605 mm × 0.412 mm,0.4 mm pitch)

产品应用

NVT4556 can be used with a range of SIM card attached devices including:
- Mobile and personal phones
- Wireless modems
- SIM card terminals

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