2 Pin Descriptions

The descriptions of the pins are listed in Table 2-1.

Table 2-1. Pin Function Table
Name8‑Lead SOIC8‑Lead TSSOP8‑Pad UDFN(1)5-Lead SOT23Function
NC111No Connect
NC222No Connect
NC333No Connect
GND4442Ground
SDA5553Serial Data
SCL6661Serial Clock
WP(2)7775Write-Protect
VCC8884Device Power Supply
Note:  
  1. The exposed pad on this package can be connected to GND or left floating.
  2. If the WP pin is not driven, it is internally pulled down to GND. In order to operate in a wide variety of application environments, the pull‑down mechanism is intentionally designed to be somewhat strong. Once this pin is biased above the CMOS input buffer’s trip point (~0.5 x VCC), the pull‑down mechanism disengages. Microchip recommends connecting these pins to a known state whenever possible.