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I/O Ports
15-46
15.10.2 Register Descriptions
Port 8 is a general-purpose input port that is also used for analog signal inputs AN3 to AN0 and external
interrupt inputs IRQ7 to IRQ4.
Each register for port 8 is described below.
Port 8 analog/digital input control register
Register symbol: P8AD
Address:
x'36008030
Purpose:
This register selects the analog/digital input on the port 8 pins.
(0: digital; 1: analog)
Bit No.
7
6
5
4
3
2
1
0
Bit name
-
-
-
-
P83A P82A P81A P80A
Reset
0
0
0
0
1
1
1
1
Access
R
R
R
R
R/W
R/W
R/W
R/W
Port 8 pin register
Register symbol: P8IN
Address:
x'36008090
Purpose:
This register reads the value of the port 8 pins.
Bit No.
7
6
5
4
3
2
1
0
Bit name
-
-
-
-
P83I
P82I
P81I
P80I
Reset
0
0
0
0
X
X
X
X
Access
R
R
R
R
R
R
R
R
When P8nA is "1", reading this register returns a value of "0", regardless of the actual values of the port pins.
When P8nA is "1", regardless of the actual values of the port pins, IRQ7 to IRQ4 are treated as if they were "L" by
the microcontroller internally.
Summary of Contents for MN103001G/F01K
Page 1: ...MICROCOMPUTER MN1030 MN103001G F01K LSI User s Manual Pub No 23101 050E ...
Page 2: ......
Page 4: ......
Page 6: ......
Page 8: ......
Page 9: ...Table of Contents List of Figures and Tables 0 ...
Page 26: ...xviii ...
Page 27: ...1 0 1 General Specifications ...
Page 35: ...2 CPU 2 ...
Page 57: ...3 Extension Instruction Specifications 3 ...
Page 96: ...Extension Instruction Specifications 3 40 ...
Page 97: ...4 Memory Modes 3 4 ...
Page 102: ...Memory Modes 4 6 ...
Page 103: ...5 Operating Mode 5 ...
Page 107: ...6 Clock Generator 6 13 ...
Page 111: ...7 Internal Memory 7 ...
Page 114: ...Internal Memory 7 4 ...
Page 115: ...8 Bus Controller BC 8 ...
Page 189: ...9 Interrupt Controller 9 ...
Page 220: ...Interrupt Controller 9 32 ...
Page 221: ...10 8 bit Timers 9 10 ...
Page 254: ...8 bit Timers 10 34 ...
Page 255: ...11 16 bit Timers 11 ...
Page 292: ...16 bit Timers 11 38 ...
Page 293: ...12 Watchdog Timer 11 12 ...
Page 302: ...Watchdog Timer 12 10 ...
Page 303: ...13 Serial Interface 13 ...
Page 354: ...Serial Interface 13 52 ...
Page 355: ...14 A D Converter 14 ...
Page 367: ...15 I O Ports 15 ...
Page 431: ...16 Internal Flash Memory 16 ...
Page 439: ...17 17 Ordering Mask ROM ...
Page 442: ...Ordering Mask ROM 17 4 ...
Page 443: ...Appendix ...