AN3355

M24LRxx-R and M24LRxxE-R pin-out comparison

Doc ID 018544 Rev 2

5/11

1

M24LRxx-R and M24LRxxE-R pin-out comparison

The standard dual-interface M24LRxx-R and the energy-harvesting M24LRxxE-R devices

have small differences in pin-out, which apply to only two pins:

●

M24LRxx-R

–

Pin1: E0 input (used to define the hardware address of the I²C-bus slave)

–

Pin7: E1 input (used to define the hardware address of the I²C-bus slave)

●

M24LRxxE-R

–

Pin1: Vout (output used to deliver supply voltage to the application)

–

Pin7: WIP/Busy output signal (during a Write cycle)

Figure 1.

Two families, two pin-outs

When designing a new application, it can be useful to design an application board which can

embed either the standard M24LRxx-R or the energy-harvesting M24LRxxE-R devices.