87C51SL controller equivalent, keyboard controller.
48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74
Table 2 Pin Characteristics (Continued)
Pin Name
Type
Term
VSS VSS ADB0
IO
ADB1
.
Table 1 Pin Descriptions
Symbol
Type
Description
VSS Circuit ground potential
VCC Supply voltage during normal Idle and Power-Down operation nominally a5V g10% for 8XC51SL a3 3V g 0 3V for Low Voltage 8XC51SL
PCDB0
– 7
I O Hos.
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