Digital Equipment 21BM18, Руководство по обслуживанию, Страница: 34 / 51

SERVICE MANUAL
3
2
1.6 EEPROM AT24C08
1) Features
· Data EEPROM internally organized as 1024/2048
bytes and 64/128 pages×16 bytes
· Page protection mode, flexible page-by-page
hardware write protection
-Additional protection EEPROM of 64/128 bits,
bit per data page
1-Protection setting for each data page by writing its
protection bit
-Protection management without switching WP pin
·
Low power CMOS
· Vcc=2.7 to 5.5V operation
·
Two wire serial interface bus, I
2
C-Bus compatible
· Filtered inputs for noise suppression with Schmitt
trigger
· Clock frequency up to 400 kHz
·
High programming flexibility
-Internal programming voltage
-Self timed programming cycle including erase
-Byte-write and page-write programming, between 1 and 16 bytes
-Typical programming time 6ms(<10ms) for up to 16 bytes
· High reliability
-Endurance 10
6
cycles
1)
-Data retention 40 years
1)
-ESD protection 4000 V on all pins
· 8 pin DIP/DSO packages
·
Available for extended temperature ranges
-Industrial: -40 ℃ to +85 ℃
-Automotive: -40 ℃ to +125 ℃
3) Block Diagram
Fig. 17
2) Pin Configuration