NEC PD78214 User Manual
Page 19
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Contents
LIST OF FIGURES
Fig. No.
Title, Page
2-1
I/O Circuits Provided for Pins .......................................................................................................34
3-1
Memory Map of
µPD78212 (EA Pin Driven High) .....................................................................38
3-2
Memory Map of
µPD78212 (EA Pin Driven Low) ......................................................................39
3-3
Memory Map of
µPD78213, µPD78214, or µPD78P214 (EA Pin Driven Low) ........................40
3-4
Memory Map of
µPD78214, µPD78P214 (EA Pin Driven High)................................................41
3-5
Sample Data Transfer between Banks .......................................................................................44
3-6
Configuration of the Program Counter ......................................................................................45
3-7
Configuration of the Program Status Word ............................................................................... 45
3-8
Configuration of the Stack Pointer ..............................................................................................46
3-9
Data Saved to the Stack Area ......................................................................................................47
3-10
Data Restored from the Stack Area ............................................................................................47
3-11
Configuration of General-Purpose Registers .............................................................................48
4-1
Block Diagram of Clock Generator ..............................................................................................55
4-2
External Circuit for the Clock Oscillator .....................................................................................55
4-3
Point from Which Signals Can Be Drawn When an External Clock Is Input .........................56
4-4
Notes on Connection of the Oscillator .......................................................................................57
4-5
Incorrect Oscillator Connections .................................................................................................57
5-1
Port Configuration .........................................................................................................................59
5-2
Configuration of Port 0 .................................................................................................................61
5-3
Port 0 Mode Register Format .......................................................................................................61
5-4
Port Specified as an Output Port .................................................................................................62
5-5
Example of Driving a Transistor ..................................................................................................62
5-6
Block Diagram of Port 2................................................................................................................64
5-7
Port Specified as an Input Port ....................................................................................................65
5-8
Built-In Pull-Up Resistor Format ..................................................................................................65
5-9
Connection of Pull-Up Resistors (Port 2) ...................................................................................66
5-10
Block Diagram of P30 (Port 3)......................................................................................................68
5-11
Block Diagram of P31, and P34 through P37 (Port 3) ...............................................................69
5-12
Block Diagram of P32 (Port 3)......................................................................................................70
5-13
Block Diagram of P33 (Port 3)......................................................................................................71
5-14
Port 3 Mode Register Format .......................................................................................................72
5-15
Port 3 Mode Control Register (PMC3) Format ...........................................................................72
5-16
Port Specified as an Output Port .................................................................................................73
5-17
Port Specified as an Input Port ....................................................................................................73
5-18
Port Specified as a Control Signal Input or Output ..................................................................74
5-19
Pull-Up-Resistor-Option Register Format...................................................................................74
5-20
Connection of Pull-Up Resistors (Port 3) ...................................................................................75
5-21
Block Diagram of Port 4................................................................................................................76
5-22
Port Specified as an Output Port .................................................................................................77
5-23
Port Specified as an Input Port ....................................................................................................77
5-24
Pull-Up-Resistor-Option Register Format...................................................................................78