93LCS56_04 Datasheet, PDF (7/14 Pages) Microchip Technology – 2K/4K 2.5V Microwire Serial EEPROM with Software Write Protect

FIGURE 2-4: EWDS TIMING
93LCS56/66
CS
CLK
DI
1
0
0
FIGURE 2-5: WRITE TIMING
PE
0
0
T CSL
X
†††
X
6 DON'T CARE BITS
CS
T CSL
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
PE
CS
PRE = 0
BUSY
T WC
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
 2004 Microchip Technology Inc.
DS11181E-page 7