Chapter 3
Microcomputer Basics 1
Timer 1 Binary Counter (TM1BC: 0x0000A151)
bp
7
6
5
4
3
2
1
0
Flag name | Description | |
TM1BC7 |
| |
TM1BC6 |
| |
TM1BC5 |
| |
TM1BC4 | Timer 1 binary counter | |
TM1BC3 | ||
| ||
TM1BC2 |
| |
TM1BC1 |
| |
TM1BC0 |
| |
|
|
Timer 1 Mode Register (TM1MD: 0x0000A141)
bp | Flag name | Description |
|
|
|
|
| Timer operation enable |
7 | TM1CNE | 0: Operation disabled |
|
| 1: Operation enabled |
|
|
|
|
| Timer initialization |
|
| 0: Normal operation |
6 | TM1LDE | 1: Initialization |
|
| TM1BR value is loaded into TM1BC. |
|
| Timer pulse output 1 is reset to low level. |
|
|
|
| | |
|
|
|
|
| Count source selection |
|
| 000: IOCLK |
| TM1CK2 | 001: IOCLK/8 |
| 010: IOCLK/32 | |
TM1CK1 | 011: Cascading with Timer 0 | |
| TM1CK0 | 100: Timer 0 underflow |
|
| 101: Setting not available |
|
| 110: Timer 2 underflow |
|
| 111: TM1IO pin input |
|
|
|
Port 3 I/O Control Register (P3DIR: 0x0000A023)
bp
7
Flag name | Description |
| |
P36D |
|
P35D |
|
P34D | P36 to P30 I/O control |
P33D | 0: Input mode |
P32D | 1: Output mode |
P31D |
|
P30D |
|
|
|
III−39 |
