MN63Y1208 Datasheet, PDF (16/120 Pages) Panasonic Semiconductor – Built-in 4-Kbit FeRAM non-volatile memory with fast write and low power consumption

Chapter 2 Pin Descriptions
2.2 Pin Descriptions
Coil connection pins (VA, VB)
Used for connecting an antenna coil. Also connect a resonance capacitor for adjusting resonance frequency.
Ground (VSS)
A reference power supply pin. Connect to the ground of the host CPU.
Internal analog power supply (VDDA)
An internal analog power supply pin. Connect a capacitor (see the Product Standards for its value) between
VDDA and VSS pins as close as possible to the RFID. It is unnecessary to apply an external power to this pin.
Internal digital power supply (VDDD)
An internal digital power supply pin. Connect a capacitor (see the Product Standards for its value) between
VDDD and VSS pins as close as possible to the RFID. It is unnecessary to apply an external power to this pin.
Contact power supply (VDDEX)
A contact power supply pin. Apply a "high" voltage to this pin when communicating data between the host
CPU and RFID. Connect a capacitor (see the Product Standards for its value) between VDDEX and VSS pins
as close as possible to the RFID.
Additionally, the RFID has a built-in clamp circuit for 5-V operation. When using the circuit, apply a 5-V supply
voltage to this pin through a given resistor (see the Product Standards for its value).
Host interface I2C (SDA, SCL)
I2C is an N-ch open drain pin, so should be pulled up to VDDEX externally. It is available between the
frequencies 20 kHz and 100 kHz. Start the access t_Boot after applying VDDEX. For more information about
t_Boot, see the Product Standards.
Interrupt request (NIQR)
An N-ch open drain pin to request an interrupt to the host and should be pulled up externally.
Test control (TEST 1 to 4)
Used for setting a test mode. Normally set to VSS.
N.C. pin
Not connected. Leave it open in normal operation.
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