MC68HC08AS20 Datasheet, PDF (384/386 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

Check the listing verify file thoroughly, then complete and sign the listing
verify form and return the listing verify form to Freescale. The signed
listing verify form constitutes the contractual agreement for the creation
of the custom mask.
23.6 ROM Verification Units (RVUs)
After receiving the signed listing verify form, Freescale manufactures a
custom photographic mask. The mask contains the customer’s
application program and is used to process silicon wafers. The
application program cannot be changed after the manufacture of the
mask begins. Freescale then produces 10 MCUs, called RVUs, and
sends the RVUs to the customer. RVUs are usually packaged in
unmarked ceramic and tested to 5 Vdc at room temperature. RVUs are
not tested to environmental extremes because their sole purpose is to
demonstrate that the customer’s user ROM pattern was properly
implemented. The 10 RVUs are free of charge with the minimum order
quantity. These units are not to be used for qualification or production.
RVUs are not guaranteed by Freescale Quality Assurance.
23.7 MC Order Numbers
Table 23-1. MC Order Numbers
MC Order Number
MC68HC08AS20FN⁽¹⁾
MC68HC08AS20CFN
MC68HC08AS20VFN
1. FN = plastic leaded chip carrier
Operating
Temperature Range
0 °C to + 70 °C
– 40 °C to + 85 °C
– 40 °C to + 105 °C
Advance Information
384
MC68HC08AS20 —Rev. 4.1
Freescale Semiconductor