DS1554 Maxim, DS1554 Datasheet - Page 2

• Manufacturer Part Number: DS1554
• Description: The DS1554 is a full-function, year 2000-compliant (Y2KC), real-time clock/calendar (RTC) with an RTC alarm, watchdog timer, power-on reset, battery monitor, and 32k x 8 nonvolatile static RAM
• Manufacturer: Maxim

PIN DESCRIPTION
A0–A14
DQ0–DQ7
IRQ/FT
RST
CE
OE
WE
V
GND
N.C.
X1, X2
V
ORDERING INFORMATION
+Denotes a lead(Pb)-free /RoHS-compliant package.
*DS9034-PCX+ or DS9034I-PCX+ required (must be ordered separately).
**The top mark will include a “+” on lead-free devices. An “IND” anywhere on the top mark indicates an industrial temperature grade device.
DS1554-70+
DS1554-70IND+
DS1554P-70+
DS1554P-70IND+
DS1554W-120+
DS1554W-120IND+
DS1554WP-120+
DS1554WP-120IND+
CC
BAT
PART
- Address Inputs
- Data Input/Outputs
- Interrupt, Frequency Test Output (Open Drain)
- Power-On Reset Output (Open Drain)
- Chip Enable
- Output Enable
- Write Enable
- Power-Supply Input
- Ground
- No Connection
- Crystal Connection
- Battery Connection
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
VOLTAGE
(V)
5.0
5.0
5.0
5.0
3.3
3.3
3.3
3.3
DS1554 256k, Nonvolatile, Y2K-Compliant Timekeeping RAM
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PIN-PACKAGE
32 EDIP (0.740a)
32 EDIP (0.740a)
34 PowerCap*
34 PowerCap*
32 EDIP (0.740a)
32 EDIP (0.740a)
34 PowerCap*
34 PowerCap*
TOP MARK**
DS1554+070
DS1554+070 IND
DS1554P+70
DS1554P+70 IND
DS1554W+120
DS1554W+120 IND
DS1554WP+120
DS1554WP+120 IND