 |
поискавой системы для электроныых деталей |
|
|
поискавой системы для электроныых деталей |
|
AT89C5130A-RDTUM датащи(PDF) 14 Page - ATMEL Corporation |
|
|
|||||||||||||||||||||||||||||
AT89C5130A-RDTUM датащи(HTML) 14 Page - ATMEL Corporation |
|
|
14 / 188 page  14 4337K–USB–04/08 AT89C5130A/31A-M 5. Clock Controller 5.1 Introduction The AT89C5130A/31A-M clock controller is based on an on-chip oscillator feeding an on-chip Phase Lock Loop (PLL). All the internal clocks to the peripherals and CPU core are generated by this controller. The AT89C5130A/31A-M X1 and X2 pins are the input and the output of a single-stage on-chip inverter (see Figure 5-1) that can be configured with off-chip components as a Pierce oscillator (see Figure 5-2). Value of capacitors and crystal characteristics are detailed in the section “DC Characteristics”. The X1 pin can also be used as input for an external 48 MHz clock. The clock controller outputs three different clocks as shown in Figure 5-1: • a clock for the CPU core • a clock for the peripherals which is used to generate the Timers, PCA, WD, and Port sampling clocks • a clock for the USB controller These clocks are enabled or disabled depending on the power reduction mode as detailed in Section “Power Management”, page 155. Figure 5-1. Oscillator Block Diagram 5.2 Oscillator Two types of clock sources can be used for CPU: • Crystal oscillator on X1 and X2 pins: Up to 32 MHz (Amplifier Bandwidth) • External clock on X1 pin: Up to 48MHz X1 X2 PD PCON.1 IDL PCON.0 Peripheral CPU Core 0 1 X2 CKCON.0 ÷ 2 Clock Clock EXT48 PLLCON.2 0 1 PLL USB Clock |
|
ссылки URL |
| Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | Ссылка на техническое описание | обмен ссыками | поиск по производителю 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 |
Russian ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
