Rainbow Electronics DS28DG02 - Manual (Page 3)

DS28DG02: 2kb SPI EEPROM with PIO, RTC, Reset, Battery Monitor, and Watchdog
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PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
LOW-Level Input Voltage V
IL
0.8 V
HIGH-Level Input Voltage V
IH
0.7 ×
V
CC
V
CC
+
0.5V
V
Low-current mode
(Note 9)
1
Output Transition Time t
OT High-current mode
(Note 10)
25
µs
Power-On Setting Time
t
POS
High-current mode
(Note 11)
25 µs
PIO Read Setup Time t
PS
(Note 5) 100 ns
PIO Read Hold Time t
PH
(Note 5) 100 ns
Leakage Current I
L
High impedance, at
V
CCMAX
-1 +1 µA
RSTZ PIN (Note 12) (See Figures 6, 7)
LOW-Level Output Voltage V
OL
At 4mA sink current 0.3 V
LOW-Level Input Voltage V
IL
0.3 ×
V
CC
V
Input Leakage Current I
L
-1 +1 µA
Minimum V
CC
for Valid RSTZ V
POR
(Notes 5, 13) 2.13 V
RSTZ Pulse Duration t
RST
176 328 532 ms
Manual Reset Pulse Width t
MPW
1 µs
Manual Reset Release
Threshold
V
TRMS
(Note 14) V
IL
V
Manual Reset Debounce Time t
DEB
t
RST
ms
RSTZ Delay t
DEL
V
CC
falling below V
TRIP
(Note 15)
90 µs
ALMZ, WDOZ PINS
LOW-Level Output Voltage V
OL
At 4mA sink current 0.3 V
WDI PIN
LOW-Level Input Voltage V
IL
0.3 ×
V
CC
V
HIGH-Level Input Voltage V
IH
0.7 ×
V
CC
V
CC
+
0.5V
V
Input Leakage Current I
L
-1 +1 µA
Minimum Input Pulse Width t
MPW
1 µs
Watchdog Timeout t
WD
User programmable
0.88
0.44
0.22
0.11 1.64
0.82
0.41
0.20 2.66
1.33
0.67
0.33
s
WPZ, SI, SCK, CSZ PINS
LOW-Level Input Voltage V
IL
0.3 ×
V
CC
V
HIGH-Level Input Voltage V
IH
0.7 ×
V
CC
V
CC
+
0.5V
V
Input Leakage Current I
L
-1 +1 µA
SO PIN
LOW-Level Output Voltage V
OL
At 1mA sink current and
V
CCmin
0.2 V
HIGH-Level Output Voltage V
OH
At 1mA source current
0.7 ×
V
CC
V
Output Leakage Current I
L
High impedance, at
V
CCmax
-1 +1 µA