DS28EC20 Maxim, DS28EC20 Datasheet - Page 4

• Manufacturer Part Number: DS28EC20
• Description: The DS28EC20 is a 20480-bit, 1-Wire® EEPROM organized as 80 memory pages of 256 bits each
• Manufacturer: Maxim

3.3V SUPPLY ELECTRICAL CHARACTERISTICS
(V
I/O PIN GENERAL DATA
1-Wire Pullup Resistance
Input Capacitance
Input Load Current
High-to-Low Switching
Threshold
Input Low Voltage
Low-to-High Switching
Threshold
Switching Hysteresis
Output Low Voltage
Recovery Time
Rising-Edge Hold-off Time
Timeslot Duration
I/O PIN, 1-Wire RESET, PRESENCE DETECT CYCLE
Reset-Low Time
Presence-Detect High
Time
Presence-Detect Low
Time
Presence-Detect Sample
Time
I/O PIN, 1-Wire WRITE
Write-0 Low Time
Write-1 Low Time
I/O PIN, 1-Wire READ
Read-Low Time
Read-Sample Time
EEPROM
Programming Current
Programming Time
Write/Erase Cycles (Endu-
rance) (Notes 19, 20)
Data Retention
PUP
= 3.3V ±5%, T
PARAMETER
A
= 0°C to +70°C, unless otherwise noted.)
SYMBOL
I
t
R
t
t
t
t
t
t
t
t
PROG
PROG
V
V
V
t
t
N
C
V
SLOT
RSTL
V
MSP
t
MSR
t
REC
REH
PDH
PDL
W0L
W1L
PUP
I
DR
RL
HY
TL
TH
OL
CY
IO
L
IL
(Notes 1, 2)
(Notes 3, 4)
I/O pin at V
(Notes 4, 5, 6)
(Notes 1, 7)
(Notes 4, 5, 8)
(Notes 4, 5, 9)
At 4mA (Note 10)
Standard speed (Notes 1, 11)
Standard speed (Notes 4, 12)
Standard speed (Notes 1, 13)
Standard speed (Note 1)
Standard speed
Standard speed
Standard speed (Notes 1, 14)
Standard speed (Notes 1, 15)
Standard speed (Notes 1, 15)
Standard speed (Notes 1, 16)
Standard speed (Notes 1, 16)
(Note 17)
(Note 18)
At +25°C
At +70°C
(Notes 21, 22, 23)
PUP
CONDITIONS
4 of 27
t
RL
200k
0.05
0.49
1.09
0.33
MIN
480
50k
0.3
0.5
DS28EC20: 20Kb 1-Wire EEPROM
65
15
60
60
60
40
5
1
5
+ 
2000
TYP
V
V
15 - 
MAX
0.70
0.30
640
240
120
2.2
3.5
PUP
1.9
0.5
PUP
1.1
5.0
0.9
60
75
15
15
10
-
-
UNITS
years
mA
k
µA
ms
pF
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs

V
V
V
V
V