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IS
ICSI
XX
Family Descriptor
89 = FLASH Embedded Microcontroller
XX
Technology
C = CMOSE = Enhanced FunctionsLV = Low-Voltage CMOS
XXX
Density
51 = 4kx852 = 8kx854 = 16kx858 = 32kx864 = 64kx8
(X)
Version
XX
Speed Option
12 = 12 MHz24 = 24 MHz40 = 40 MHz
XX
Package Type
PL = PLCCW = 600mil DIPPQ = PQFP
Note: Part number description table describes usual part-numbering system for more chips, therefore this table can contain information, that might not be valid for the actually selected chip. The information here are provided on the best-effort basis and might be either inaccurate or incoplete. Therefore always check the latest datasheet of the chip for part number description detail. If you find some inaccuracy, let us please know.