 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
UPD78044F Datasheet(PDF) 105 Page - NEC |
|
|
|||||||||||||||||||||||||||||
UPD78044F Datasheet(HTML) 105 Page - NEC |
|
|
105 / 472 page  105 Chapter 5 Clock Generator User’s Manual U16504EE1V1UD00 5.4 System Clock Oscillator 5.4.1 Main system clock oscillator The main system clock oscillator oscillates with a crystal resonator or a ceramic resonator (standard: 8.0 MHz) connected to the X1 and X2 pins. External clocks can be input to the main system clock oscillator. In this case, the clock signal is supplied to the X1 pin and the X2 pin has to be left open. Figure 5-3 shows an external circuit of the main system clock oscillator. Figure 5-3: External Circuit of Main System Clock Oscillator (a) Crystal and ceramic oscillation (b) External clock Caution: Do not execute the STOP instruction if an external clock is input. This is because when the STOP instruction is used the main system clock operation stops and the X2 pin is connected to VDD1 via a pull-up resistor. X2 X1 IC Crystal or Ceramic Resonator External Clock X2 X1 Open µPD74HCU04 |
|
Link URL |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link to Datasheet | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
