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SST
Silicon Storage Technology Inc.
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Product Series
89 = C51 Core
X
Voltage Range
E = 4.5V to 5.5VV = 2.7V to 3.6V
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Feature Set and Flash Memory Size
54RD = C52 feature set + 16(32)kB58RD = C52 feature set + 32(40)kB564RD = C52 feature set + 64(72) kB554RC = C52 feature set + 32(40) kB- number in parenthesis includes an additional8kB flash which can be enabled
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Operaticg Frequency
33 = 0 - 33 MHz40 = 0 - 40 MHz
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Temperature Range
C = Commercial (0°C to 70°C)I = Industrial (-40°C to 85°C)
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Package Type
P = PDIPN = PLCCQ = WQFNTQ = TQFP
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Package Modifier
I = 40 contacts or pinsJ = 44 leads
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Package Attribute
E = non-PbF = non-Pb / non-Sn contact (lead)
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.