Rainbow Electronics DS28DG02 - Manual (Page 2)

DS28DG02: 2kb SPI EEPROM with PIO, RTC, Reset, Battery Monitor, and Watchdog
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ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground -0.5V, +6V
Maximum Current SO, ALMZ, RSTZ, WDOZ Pins ±20mA
Maximum Current Each PIO Pin ±50mA
Maximum GND and V
CC
Current 270mA
Operating Temperature Range -40°C to +85°C
Junction Temperature +150°C
Storage Temperature Range -55°C to +125°C
Soldering Temperature See IPC/JEDEC J-STD-020
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 the absolute maximum rating conditions for extended periods may affect device.
ELECTRICAL CHARACTERISTICS
(T
A
= -40°C to +85°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Battery monitor off 2.2 5.25
Supply Voltage V
CC Battery monitor enabled 2.7 5.25
V
Battery Voltage V
BAT
(Note 1) 1.5 3.0 V
CC
V
RTC oscillator off 2
RTC oscillator on 0.4 10
Battery Current (V
BAT
= 3.0V,
Note 1)
I
BAT
RTC oscillator on, +25°C 4.7
µA
Standby Current (Note 2) I
CCS
SPI idle, ALMZ, WDOZ,
RTSZ high, V
CC
= 5.25V,
RTC oscillator on, all
PIOs grounded
60 100 µA
Operating Current I
CCA
Reading EEPROM at 2
Mbps, ALMZ, WDOZ,
RTSZ high, V
CC
= 5.25V,
RTC oscillator on, all
PIOs grounded
550 800 µA
Programming Current I
PROG
V
CC
= 5.25V 600 1000 µA
V
CC
Monitor Trip Point V
TRIP
(Note 3) 2.97 3.05 3.14 V
+25°C -1.5 +1.5 V
CC
Monitor Trip-Point
Tolerance
V
TRIPTOL -40°C to +85°C -2.5 +2.5
%V
TRIP
V
CC
Monitor Hysteresis V
HYST
0.4 0.5 0.6 %V
TRIP
Power-Up Wait Time t
POIP
60 µs
EEPROM
Programming Time t
PROG
10 ms
Endurance N
CYCLE
At +25°C (Notes 4, 5) 200k —
Data Retention t
RET
At +85°C (Notes 5, 6) 40 years
REAL-TIME CLOCK
Frequency Deviation Δ
F
(Notes 5, 7) -46 +46 PPM
PIO PINS (See Figures 21, 22, 23)
V
CC
= 2.2V 6 9.5
V
CC
= 3.3V 12.5 22.0
LOW-Level Output Current at
V
OL
= 0.5V (Note 8)
I
OL
V
CC
= 5.25V 19 30
mA
V
OH
= 2.4V, V
CC
= 3.3V 6.5 11.0 HIGH-Level Output Current
(Note 8)
I
OH V
OH
= 4.5V, V
CC
= 5.25V 12.5 18.0
mA