1024-Bit, 1-Wire EEPROM
for Automotive Applications
ABSOLUTE MAXIMUM RATINGS
I/O Voltage to GND .....................................................-0.5V, +6V
I/O Sink Current ..................................................................20mA
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-55°C to +125°C
Soldering Temperature .....................See IPC/JEDEC J-STD-020
specification.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(T = -40°C to +125°C) (Note 1)
A
DS243-A1
PARAMETER
I/O PIN GENERAL DATA
1-Wire Pullup Voltage
1-Wire Pullup Resistance
Input Capacitance
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
R
(Note 2)
4.5
0.3
5.25
2.2
V
PUP
PUP
(Notes 2, 3)
(Notes 4, 5)
kꢀ
pF
μA
C
1000
10
IO
L
Input Load Current
I
I/O pin at V
0.05
0.5
PUP
V
-
PUP
1.8
High-to-Low Switching Threshold
Input Low Voltage
V
TL
(Notes 5, 6, 7)
(Notes 2, 8)
V
V
V
V
0.5
IL
V
-
PUP
1.0
Low-to-High Switching Threshold
V
TH
(Notes 5, 6, 9)
(Notes 5, 6, 10)
1.0
Switching Hysteresis
Output Low Voltage
V
V
0.21
1.70
0.4
V
V
HY
At 4mA (Note 11)
Standard speed, R
OL
= 2.2kꢀ
5
2
PUP
Recovery Time
(Notes 2, 12)
Overdrive speed, R
= 2.2kꢀ
PUP
t
μs
REC
REH
Overdrive speed, directly prior to reset
pulse; R = 2.2kꢀ
5
PUP
Standard speed
Overdrive speed
Standard speed
Overdrive speed
0.5
5.0
Rising-Edge Hold-Off Time
(Notes 5, 13)
t
μs
μs
Not applicable (0)
65
Time Slot Duration
(Notes 2, 14)
t
SLOT
8
I/O PIN, 1-Wire RESET, PRESENCE-DETECT CYCLE
Standard speed
Overdrive speed
Standard speed
Overdrive speed
Standard speed
Overdrive speed
Standard speed
Overdrive speed
480
48
15
2
640
80
60
6
Reset Low Time (Note 2)
Presence-Detect High Time
Presence-Detect Low Time
t
μs
μs
μs
μs
RSTL
t
PDH
60
8
240
24
75
10
t
PDL
60
6
Presence-Detect Sample Time
(Notes 2, 15)
t
MSP
I/O PIN, 1-Wire WRITE
Standard speed
Overdrive speed
Standard speed
Overdrive speed
60
5
120
15.5
15
Write-0 Low Time
(Notes 2, 16, 17)
t
μs
μs
W0L
1
Write-1 Low Time
(Notes 2, 17)
t
W1L
1
2
I/O PIN, 1-Wire READ
Standard speed
Overdrive speed
5
1
15 - ꢁ
2 - ꢁ
Read Low Time
(Notes 2, 18)
t
RL
μs
2
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MAXIM [ MAXIM INTEGRATED PRODUCTS ]
