
User’s Manual U16898EJ3V0UD
9
CONTENTS
CHAPTER 1 OVERVIEW.........................................................................................................................15
1.1
Features ......................................................................................................................................15
1.2
Application Fields ......................................................................................................................15
1.3
Ordering Information .................................................................................................................16
1.4
Pin Configuration (Top View) ...................................................................................................17
1.5
78K0S/Kx1+ Product Lineup.....................................................................................................18
1.6
Block Diagram............................................................................................................................19
1.7
Functional Outline .....................................................................................................................20
CHAPTER 2 PIN FUNCTIONS...............................................................................................................21
2.1
Pin Function List........................................................................................................................21
2.2
Pin Functions .............................................................................................................................23
2.2.1
P20 to P23 (Port 2)...................................................................................................................... 23
2.2.2
P30, P31, and P34 (Port 3) ......................................................................................................... 23
2.2.3
P40 to P45 (Port 4)...................................................................................................................... 24
2.2.4
P121 to P123 (Port 12)................................................................................................................ 24
2.2.5
P130 (Port 13)............................................................................................................................. 24
2.2.6
RESET ........................................................................................................................................ 24
2.2.7
X1 and X2 ................................................................................................................................... 25
2.2.8
AVREF........................................................................................................................................... 25
2.2.9
VDD .............................................................................................................................................. 25
2.2.10
VSS............................................................................................................................................... 25
2.3
Pin I/O Circuits and Connection of Unused Pins ...................................................................25
CHAPTER 3 CPU ARCHITECTURE......................................................................................................27
3.1
Memory Space............................................................................................................................27
3.1.1
Internal program memory space.................................................................................................. 29
3.1.2
Internal data memory space ........................................................................................................ 29
3.1.3
Special function register (SFR) area ........................................................................................... 30
3.1.4
Data memory addressing ............................................................................................................ 30
3.2
Processor Registers ..................................................................................................................32
3.2.1
Control registers .......................................................................................................................... 32
3.2.2
General-purpose registers........................................................................................................... 34
3.2.3
Special function registers (SFRs) ................................................................................................ 35
3.3
Instruction Address Addressing ..............................................................................................38
3.3.1
Relative addressing..................................................................................................................... 38
3.3.2
Immediate addressing ................................................................................................................. 39
3.3.3
Table indirect addressing ............................................................................................................ 39
3.3.4
Register addressing .................................................................................................................... 40
3.4
Operand Address Addressing..................................................................................................41
3.4.1
Direct addressing ........................................................................................................................ 41
3.4.2
Short direct addressing ............................................................................................................... 42
3.4.3
Special function register (SFR) addressing ................................................................................. 43
3.4.4
Register addressing .................................................................................................................... 44
3.4.5
Register indirect addressing ........................................................................................................ 45