поискавой системы для электроныых деталей |
|
5V7855SWFR датащи(PDF) 8 Page - Integrated Device Technology |
|
5V7855SWFR датащи(HTML) 8 Page - Integrated Device Technology |
8 / 14 page IDT5V7855-DPK REVISION A MARCH 11, 2010 8 ©2010 Integrated Device Technology, Inc. IDT5V7855 Data Sheet EEPROM PROGRAMMABLE PLL DIE FOR LVCMOS CRYSTAL OSCILLATOR The procedure to program the registers and control bits and write the data to the EEPROM is as follows: 1. Set CONT and OUT to 0.0 volts with no power applied. 2. Apply power, wait for 1ms. 3. Apply four clock pulses to OUT to enter serial programming mode (see timing diagram below). 4. Wait 1ms. 5. Apply EEPROM programming pulse (12V) on CONT to erase EEPROM. [WARNING: Do not apply High Voltage Programming pulse prior to entering serial mode.] 6. Wait 1ms. 7. Enter serial data (bit order as described above) via the CONT pin, with a positive pulse on OUT pin for each data bit. NOTE: CONT must only change while OUT is LOW to write the data properly. 8. Complete the serial write with a Stop Bit set to 0. 9. Wait 1ms 10. While OUT is held LOW, apply EEPROM programming pulse (12V) to CONT to store the data in EEPROM. 11. Remove power from the device. Figure 3. Timing Diagram 3G. Timing/Voltage Requirements Table NOTE: The supply voltage on VDD must be able to sink at least 2mA when VPP is applied to CONT to ensure transient currents are safely absorbed. Alternatively, a 1k Ω resistor may be connected between V DD and GND during programming. Symbol Parameter Test Conditions Minimum Maximum Units ts Enter Serial Data Mode 1 ms td Data & Clock Timing 1 µs tp Programming EEPROM Timing 100 110 ms tR / tF Rise/Fall Time of VPP 10% - 90% 5 ms VDD Supply Voltage; NOTE 2.2 3.6 V VPP Programming EEPROM Voltage 11.5 12.5 V |
Аналогичное описание - 5V7855SWFR |
|
|
ссылки URL |
Конфиденциальность |
ALLDATASHEETRU.COM |
Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | 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 |