{{tag>collection_mcmaster vendor_wdc type_unknown year_1975 foundry_unknown}}

====== PCB ======

{{:mcmaster:wdc:cp1621b:pcb.jpg?300|}}

{{:mcmaster:wdc:cp1621b:pcb_chips.jpg?300|}}

From PDP-11 / LSI-11


====== Package ======

{{:mcmaster:wdc:cp1621b:pack_top.jpg?300|}}

<code>
CP1621B14
7601

90

23001C3
</code>

{{:mcmaster:wdc:cp1621b:pack_btm.jpg?300|}}

<code>
</code>

====== Die ======

<code>
CP1621

124567
NHJJLD

(C)
WDC
1975
</code>

[[https://siliconpr0n.org/map/wdc/cp1621b/mcmaster_mz_mit20x/|MZ @ 20x]]

    * [[https://siliconpr0n.org/map/wdc/cp1621b/single/wdc_cp1621b_mcmaster_mz_mit20x.jpg|Single]] (14329x14859, 80 MB)

====== Links ======

  * [[http://www.cpushack.com/2014/02/09/western-digital-wd9000-pascal-microengine/|About this chip]]