NEC PD75402A User Manual page 7

4-bit single-chip microcomputer
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CHAPTER 4. INTERNAL CPU FUNCTIONS ...........................................................................................
4.1
PROGRAM COUNTER (PC) ...........................................................................................................................
4.2
PROGRAM MEMORY (ROM) . .....................................................................................................................
4.3
DATA MEMORY (RAM) ...............................................................................................................................
4.4
GENERAL REGISTER . ..................................................................................................................................
4.5
ACCUMULATOR ............................................................................................................................................
4.6
STACK POINTER (SP) ...................................................................................................................................
4.7
PROGRAM STATUS WORD (PSW) .............................................................................................................
CHAPTER 5. PERIPHERAL HARDWARE FUNCTIONS ........................................................................ 41
5.1
DIGITAL INPUT/OUTPUT PORTS ................................................................................................................
5.1.1
5.1.2
Input/Output Mode Setting ..........................................................................................................
5.1.3
Digital Input/Output Port Handling Instructions .......................................................................
5.1.4
Digital Input/Output Port Operations ..........................................................................................
5.1.5
Internal Pull-Up Resistors ............................................................................................................
5.1.6
Digital Input/Output Port Input/Output Timing .........................................................................
5.2
CLOCK GENERATION CIRCUIT ....................................................................................................................
5.2.1
Clock Generation Circuit Configuration .....................................................................................
5.2.2
Clock Generation Circuit Function and Operation ....................................................................
5.2.3
CPU Clock Setting .........................................................................................................................
5.2.4
Differences Between PD75402A and PD75402 ......................................................................
5.3
CLOCK OUTPUT CIRCUIT .............................................................................................................................
5.3.1
Clock Output Circuit Configuration .............................................................................................
5.3.2
Clock Output Mode Register (CLOM) .........................................................................................
5.3.3
Clock Output Procedure ...............................................................................................................
5.3.4
Example of Remote Control Application ....................................................................................
5.4
BASIC INTERVAL TIMER ..............................................................................................................................
5.4.1
Basic Interval Timer Configuration .............................................................................................
5.4.2
Basic Interval Timer Mode register (BTM) .................................................................................
5.4.3
Basic Interval Timer Operation....................................................................................................
5.4.4
Examples of Basic Interval Timer Applications ........................................................................
5.5
SERIAL INTERFACE .......................................................................................................................................
5.5.1
Serial Interface Functions ............................................................................................................
5.5.2
Serial Interface Configuration .....................................................................................................
5.5.3
Register Functions .........................................................................................................................
5.5.4
Operation-Halt Mode ....................................................................................................................
5.5.5
3-Wire Serial I/O Mode Operation...............................................................................................
5.5.6
SBI Mode Operation .....................................................................................................................
CHAPTER 6. INTERRUPT FUNCTIONS .................................................................................................. 126
6.1
INTERRUPT CONTROL CIRCUIT CONFIGURATION .................................................................................. 126
6.2
INTERRUPT SOURCE TYPES AND VECTOR TABLE ................................................................................. 128
6.3
INTERRUPT CONTROL CIRCUIT HARDWARE ........................................................................................... 129
6.4
INTERRUPT SEQUENCE ............................................................................................................................... 134
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