Notation Data bit significance : Higher-order bits on the left side
Lower-order bits on the right side
Active low : xxx (Pin and signal names are overscored.)
Memory map address : Low-order address on the upper side
High-order address on the lower side
Note : Explanation of an indicated part of text
Caution : Information requesting the user's special attention
Remark : Supplementary information
Important and emphasized matter : Described in bold face
Numeric value : Binary .................. xxxx or xxxxB
Decimal ............... xxxx
Hexadecimal ....... xxxxH