1-Wire Digital Thermometer with
Sequence Detect and PIO
DS28EA00
Maxim Integrated
3
ELECTRICAL CHARACTERISTICS (continued)
(T
A
= -40癈 to +85癈.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Standard speed
15
60
Presence-Detect High Time
t
PDH
Overdrive speed
2
6
約
Standard speed
1.125
8.1
Presence-Detect Fall Time
(Notes 3, 15)
t
FPD
Overdrive speed
0
1.3
約
Standard speed
60
240
Presence-Detect Low Time
t
PDL
Overdrive speed
8
24
約
Standard speed
68.1
75
Presence-Detect Sample Time
(Notes 2, 16)
t
MSP
Overdrive speed
7.3
10
約
IO PIN: 1-Wire WRITE
Standard speed
60
120
Write-Zero Low Time
(Notes 2, 17)
t
W0L
Overdrive speed
6
16
約
Standard speed
5
15
Write-One Low Time
(Notes 2, 17)
t
W1L
Overdrive speed
1
2
約
IO PIN: 1-Wire READ
Standard speed
5
15 -
Read Low Time (Notes 2, 18)
t
RL
Overdrive speed
1
2 -
約
Standard speed
t
RL
+
15
Read Sample Time (Notes 2, 18)
t
MSR
Overdrive speed
t
RL
+
2
約
PIO PINS
Input Low Voltage
V
ILP
(Note 2)
0.3
V
Input High Voltage (Note 2)
V
IHP
V
X
= Max(V
PUP
, V
DD
)
V
X
- 1.6
V
Input Load Current (Note 19)
I
LP
Pin at GND
-1.1
糀
Output Low Voltage (Note 11)
V
OLP
At 4mA
0.4
V
Chain-On Pullup Impedance
R
CO
(Note 3)
20
40
60
k
EEPROM
Programming Current
I
PROG
(Notes 3, 20)
1.5
mA
Programming Time
t
PROG
(Note 21)
10
ms
At +25癈
200,000
Write/Erase Cycles (Endurance)
(Notes 22, 23)
N
CY
-40癈 to +85癈
50,000
Data Retention (Notes 24, 25)
t
DR
At +85癈 (worst case)
10
Years
TEMPERATURE CONVERTER
Conversion Current
I
CONV
(Notes 3, 20)
1.5
mA
12-bit resolution (1/16癈)
750
11-bit resolution (1/8癈)
375
10-bit resolution (1/4癈)
187.5
Conversion Time (Note 26)
t
CONV
9-bit resolution (1/2癈)
93.75
ms
-10癈 to +85癈
-0.5
+0.5
Conversion Error
Below -10癈 (Note 3)
-0.5
+2.0
癈
Converter Drift
D
(Note 27)
-0.2
+0.2
癈
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