S-34C02A Datasheet, PDF (15/34 Pages) Seiko Instruments Inc – 2-WIRE CMOS SERIAL E2PROM FOR DIMM SERIAL PRESENCE DETECT

2-WIRE CMOS SERIAL E2PROM FOR DIMM SERIAL PRESENCE DETECT
Rev.1.2_00
S-34C02A
Status
Permanent
Software Write
Protect (PSWP)
Reversible
Software Write
Protect (RSWP)
No software protect
Table 13 Acknowledgment for WRITE Instruction( R / W bit = 0)
WP
Instruction
ACK
Word
ACK
DATA
output Address output
SWP, CWP or PSWP No
X
Page or Byte Write in
Lower 128 bytes
Yes
Don’t care
Address
No Don’t care
Yes
DATA
SWP
No
Don’t care
No Don’t care
CWP
Yes
Don’t care
Yes Don’t care
0
PSWP
Yes
Don’t care
Yes Don’t care
Page or Byte Write in
Lower 128 bytes
Yes
Address
Yes
DATA
SWP
No
Don’t care
No Don’t care
1
CWP
Yes
Don’t care
Yes Don’t care
PSWP
Yes
Don’t care
Yes Don’t care
Page or Byte Write
Yes
Address
Yes
DATA
SWP, CWP or PSWP Yes
0
Page or Byte Write
Yes
Don’t care
Address
Yes Don’t care
Yes
DATA
1 ^{SWP, CWP or PSWP Yes}
Page or Byte Write
Yes
Don’t care
Address
Yes Don’t care
Yes
DATA
ACK
output
No
Write
No
No
No
No
No
Yes Yes
Yes Yes
No
No
No
No
No
No
No
No
No No
Yes Yes
Yes Yes
No
No
No No
Table 14 Acknowledgment for READ Instruction( R / W bit = 1)
Status
Instruction
ACK
output
Word
Address
ACK
output
Permanent Software Write
Protect (PSWP)
SWP, CWP or PSWP No
Don’t care
No
Reversible Software Write
Protect (RSWP)
SWP
CWP
PSWP
No
Don’t care
No
Yes
Don’t care
No
Yes
Don’t care
No
No software protect
SWP, CWP or PSWP Yes
Don’t care
No
DATA
Don’t care
Don’t care
Don’t care
Don’t care
Don’t care
ACK
output
No
No
No
No
No
Seiko Instruments Inc.
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