NEC PD75402A - Manual (Page 4)

PREFACE
USER
This manual is intended for user engineers who wish to understand the
µ
PD75402A’s, 75P402’s functions and
design an application system using them.
OBJECTIVE
The objective of this manual is for the user to understand the
µ
PD75402A’s, 75P402’s hardware functions shown
below.
COMPOSITION
This manual is composed roughly of the following contents.
• General description
• Pin functions
• Internal block functions
• Interrupt
• Other internal peripheral functions
• Instruction functions
READING
The reader of this manual must have general knowledge of electricity, logic circuitry and microcomputers.
• Use as the
µ
PD75P402 manual
→
This manual describes the
µ
PD75402A as the representative model unless there are particular differences in
functions. If using it as the
µ
PD75P402 manual, the
µ
PD75402A should be read as the
µ
PD75P402.
• Checking an instruction function with a known mnemonic
→
Appendix D. “Instructions Index (in Alphabetical Order)” should be used.
• Checking an instruction with an unknown mnemonic but with a roughly known function
→
Check the instruction’s mnemonic in 9.2 “Instruction Set and Its Operation” and then check the function in 9.4
“Instruction Functions and Application”.
• Roughly understanding the
µ
PD75402A’s, 75P402’s functions
→
Follow the contents.
LEGEND
Data notation weight : High-order digit on the left, low-order digit on the right
Notation of active low :
×××
(line over pin, signal name)
Memory map address : Upper__low order, lower__high order
* : Explanation of * in text
Note : Content to be read carefully
Remarks : Supplementary explanation of text
Numeric notation : Binary ...
ЧЧЧЧ
or
ЧЧЧЧ
B
Decimal ...
ЧЧЧЧ
Hexadecimal ...
ЧЧЧЧ
H