cat34ts02 ON Semiconductor, cat34ts02 Datasheet - Page 11

• Manufacturer Part Number: cat34ts02
• Description: Digital Output Temperature Sensor With On-board Spd Eeprom
• Manufacturer: ON Semiconductor

Table 2. SWP Commands
Figure 12. Software Write Protect (Write)
Figure 13. Software Write Protect (Read)
Notes:
(1) Entries shown as A
(2) This is the state of the SWP flags prior to applying the SWP command.
(3) Here A
(4) The Read command (b0 = 1), simply confirms that the RSWP flag can be cleared.
(5) Once the PSWP flag is set, the device will respond to any SWP command with NoACK.
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Characteristics subject to change without notice
Command
RSWP
Check
Check
RSWP
Check
PSWP
Clear/
Any
Set/
Set/
(5)
(4)
2
, A
V
V
V
V
V
A
A
A
X
1
Address Pin
IL
IL
IL
IL
IL
2
2
2
and A
Levels
V
V
V
V
V
A
A
A
X
IH
IH
IL
IL
IL
1
1
1
0
2
reflect the logic state corresponding to the respective physical pin inputs.
, A
(1)
V
V
V
V
V
A
A
A
X
1
HV
HV
HV
HV
HV
0
0
0
and A
BUS ACTIVITY:
PSWP
0
0
0
0
0
0
0
0
1
SDA LINE
Prior Flag
MASTER
are either at V
State
SLAVE
RSWP
(2)
X
X
0
0
1
X
X
X
S
T
A
R
T
S
BUS ACTIVITY:
IH
b7 to b4
or at V
0110
ADDRESS
SLAVE
SDA LINE
MASTER
SLAVE
IL
Slave Address
.
b3
A
A
X
0
0
0
0
0
2
2
C
A
K
S
A
R
S
T
T
b2
A
A
X
0
0
0
1
1
X
11
1
1
X = Don't Care
X X X X X X X
ADDRESS
ADDRESS
BYTE
b1
(3)
A
A
SLAVE
X
1
1
1
1
1
0
0
b0
X
X
0
1
0
1
0
1
C
A
K
C
A
K
or
ACK
YES
YES
YES
YES
YES
YES
X
O
NO
NO
S
P
P
T
N
O
C
K
A
X X X X X X X
DATA
Address
Byte
X
X
X
A
C
K
O
S
T
P
P
ACK
YES
YES
YES
Data
Byte
X
X
X
Doc. No. MD-1129 Rev. C
CAT34TS02
ACK
YES
YES
YES
Internal
Cycle
Write
YES
YES
YES