 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
DS1554W-120 Datasheet(PDF) 1 Page - Dallas Semiconductor |
|
||||||||||||||||||||||||||||||
DS1554W-120 Datasheet(HTML) 1 Page - Dallas Semiconductor |
|
|
1 / 21 page  1 of 21 111999 FEATURES Integrated NV SRAM, real time clock, crystal, power-fail control circuit and lithium energy source Clock registers are accessed identically to the static RAM; these registers are resident in the 16 top RAM locations Century byte register; i.e., Y2K complaint Totally nonvolatile with over 10 years of operation in the absence of power Precision power-on reset Programmable watchdog timer and RTC alarm BCD coded year, month, date, day, hours, minutes, and seconds with automatic leap year compensation valid up to the year 2100 Battery voltage level indicator flag Power-fail write protection allows for ±10% VCC power supply tolerance Lithium energy source is electrically disconnected to retain freshness until power is applied for the first time PIN ASSIGNMENT DS1554 256K NV Y2KC Timekeeping RAM PRELIMINARY www.dalsemi.com 1 IRQ/FT 2 3 NC NC RST VCC WE OE CE DQ7 DQ6 DQ5 DQ4 DQ3 DQ2 DQ1 DQ0 GND 4 5 6 7 8 9 10 11 12 13 14 15 16 17 NC A14 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 34 NC X1 GND VBAT X2 34-Pin POWERCAP MODULE BOARD (USES DS9034PCX POWERCAP) RST 13 1 2 3 4 5 6 7 8 9 10 11 12 14 31 A14 A7 A5 A4 A3 A2 A1 A0 DQ1 DQ0 VCC NC IRQ/FT WE A13 A8 A9 A11 OE A10 CE DQ7 DQ5 DQ6 32 30 29 28 27 26 25 24 23 22 21 19 20 A16 A12 A6 DQ2 GND 15 16 18 17 DQ4 DQ3 32-PIN ENCAPSULATED PACKAGE |
Similar Part No. - DS1554W-120 |
|
Similar Description - DS1554W-120 |
|
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | 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
