Description
The U635H256 has two separate modes of operation: SRAM mode and nonvolatile mode.
Features
- F High-performance CMOS non-
volatile static RAM 32768 x 8 bits
F 25, 35 and 45 ns Access Times F 10, 15 and 20 ns Output Enable
Access Times
F ICC = 15 mA at 200 ns Cycle Time F Automatic STORE to EEPROM
on Power Down using system
capacitance
F Software initiated STORE F Automatic STORE Timing F 105 STORE cycles to EEPROM F 10 years data retention in
EEPROM
F Automatic RECALL on Power Up F Software RECALL Initiation F Unlimited RECALL cycles from
EEPROM
F Single 5 V ± 10 % Operation F Operating.
U635H256_ETC.pdf
