25C080 Datasheet, PDF (9/12 Pages) Microchip Technology – 8K/16K 5.0V SPI Bus Serial EEPROM

25C080/160
FIGURE 3-4: PAGE WRITE SEQUENCE
CS
SCK
SI
0 1 2 3 4 5 6 7 8 9 10 11
21 22 23 24 25 26 27 28 29 30 31
instruction
16 bit address
data byte 1
0 0 0 0 0 0 1 0 15 14 13 12
21076543210
CS
SCK
SI
32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47
data byte 2
data byte 3
7654321076543210
data byte n (16 max)
76543210
FIGURE 3-5: READ STATUS REGISTER SEQUENCE
CS
SCK
SI
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
instruction
0 00 0010 1
high impedance
data from status register
SO
765 43210
FIGURE 3-6: WRITE STATUS REGISTER SEQUENCE
CS
SCK
SI
SO
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
instruction
data to status register
0 00 00 0 017 6 54 3 2 10
high impedance
© 1996 Microchip Technology Inc.
Preliminary
DS21147F-page 9