93LCS56 Datasheet, PDF (7/12 Pages) Microchip Technology – 2K/4K 2.5V Microwire Serial EEPROM with Software Write Protect

FIGURE 2-4: EWDS TIMING
CS
CLK
93LCS56/66
TCSL
DI
1
0
0
0
0
X
•••
X
FIGURE 2-5: WRITE TIMING
PE
6 DON'T CARE BITS
CS
TCSL
PRE = 0
PE = X
DO = TRI-STATE
CLK
DI
1
0
1
A7 • • • A0 D15 • • • D0
TRI-STATE
DO
• Address bit A7 becomes a "don't care" for 93LCS56.
FIGURE 2-6: WRAL TIMING
PRE = 0
PE
CS
BUSY
TWC
TCSL
READY
CLK
DI
1
0
0
0
1
X
•••
X D15 • • • D0
DO
TRI-STATE
Guaranteed at VCC = 4.5V to 6.0V
Protect Register must be cleared PRE = 0
6 DON'T CARE BITS
BUSY _READY TRISTATE
TWL
© 1996 Microchip Technology Inc.
Preliminary
DS11181D-page 7