WM72016-6 – Secure F-RAM with Gen-2 RFID and Serial Port

Document Number: 001-86227 Rev. **

Page 30 of 33

alternative package. Eventually, the alternative marking shown in Figure 28 will be phased out leaving only the

primary markings on Figure 27. Until further notice, these two distinct markings will be in circulation.

Legend:

Line 1: XXXXX = {base part number (i.e. 72016)}

Line 2: BLLLL = {B=rev. number; LLLL=wafer lot code}

Line 3: RYYWW = {R=Ramtron, YY=year of assembly; WW = week of assembly}

Example:

72016

B0470

R1206

Figure 27: Primary package markings

Legend:

XXXXXXX= base part number (WM72016)

LLLLLLLL= lot code

R=revision, P=package (D=DFN), N=split designator (numeric)

RIC=Ramtron Int‟l Corp, YY=year, WW=work week

Example: WM72016, “Green” UDFN-8 package, Lot 0411702,

Rev B., Year 2010, Work Week 12

WM72016

0411702

BD1

RIC1012

Figure 28: Alternative package markings

XXXXXXXX

LLLLLLLL

RPN

RICYYWW

72016

0470

R1206