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| 型号： | MIC2179-5.0YSMTR |
| 厂商： | MICREL INC |
| 元件分类： | 稳压器 |
| 英文描述： | 5.5 A SWITCHING REGULATOR, 240 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封装： | LEAD FREE, MO-150, SSOP-20 |
| 文件页数： | 3/13页 |
| 文件大小： | 353K |
| 代理商： | MIC2179-5.0YSMTR |
Preliminary User’s Manual U17397EJ2V1UD
11
6.1
Functions of Clock Generator .............................................................................................. 125
6.2
Configuration of Clock Generator........................................................................................ 126
6.3
Registers Controlling Clock Generator ............................................................................... 128
6.4
System Clock Oscillator........................................................................................................ 137
6.4.1
X1 oscillator .............................................................................................................................137
6.4.2
XT1 oscillator ...........................................................................................................................137
6.4.3
When subsystem clock is not used ..........................................................................................140
6.4.4
Internal high-speed oscillator ...................................................................................................140
6.4.5
Internal low-speed oscillator.....................................................................................................140
6.4.6
Prescaler..................................................................................................................................140
6.5
Clock Generator Operation ................................................................................................... 141
6.6
Controlling Clock ................................................................................................................... 144
6.6.1
Controlling high-speed system clock........................................................................................144
6.6.2
Example of controlling internal high-speed oscillation clock.....................................................147
6.6.3
Example of controlling subsystem clock...................................................................................149
6.6.4
Example of controlling internal low-speed oscillation clock ......................................................151
6.6.5
Clocks supplied to CPU and peripheral hardware....................................................................151
6.6.6
CPU clock status transition diagram ........................................................................................152
6.6.7
Condition before changing CPU clock and processing after changing CPU clock ...................157
6.6.8
Time required for switchover of CPU clock and main system clock .........................................158
6.6.9
Conditions before clock oscillation is stopped..........................................................................159
6.6.10
Peripheral hardware and source clocks ...................................................................................160
CHAPTER 7 16-BIT TIMER/EVENT COUNTERS 00 AND 01 ........................................................ 161
7.1
Functions of 16-Bit Timer/Event Counters 00 and 01 ........................................................ 161
7.2
Configuration of 16-Bit Timer/Event Counters 00 and 01.................................................. 162
7.3
Registers Controlling 16-Bit Timer/Event Counters 00 and 01 ......................................... 167
7.4
Operation of 16-Bit Timer/Event Counters 00 and 01 ........................................................ 178
7.4.1
Interval timer operation ............................................................................................................178
7.4.2
Square wave output operation .................................................................................................181
7.4.3
External event counter operation .............................................................................................184
7.4.4
Operation in clear & start mode entered by TI00n pin valid edge input....................................187
7.4.5
Free-running timer operation....................................................................................................200
7.4.6
PPG output operation...............................................................................................................209
7.4.7
One-shot pulse output operation ..............................................................................................212
7.4.8
Pulse width measurement operation ........................................................................................217
7.5
Special Use of TM0n .............................................................................................................. 225
7.5.1
Rewriting CR01n during TM0n operation .................................................................................225
7.5.2
Setting LVS0n and LVR0n .......................................................................................................225
7.6
Cautions for 16-Bit Timer/Event Counters 00 and 01......................................................... 227
CHAPTER 8 8-BIT TIMER/EVENT COUNTERS 50 AND 51 .......................................................... 231
8.1
Functions of 8-Bit Timer/Event Counters 50 and 51 .......................................................... 231
8.2
Configuration of 8-Bit Timer/Event Counters 50 and 51.................................................... 231
8.3
Registers Controlling 8-Bit Timer/Event Counters 50 and 51 ........................................... 234
8.4
Operations of 8-Bit Timer/Event Counters 50 and 51 ........................................................ 239
8.4.1
Operation as interval timer .......................................................................................................239
8.4.2
Operation as external event counter ........................................................................................241
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