DS1321 Maxim Integrated Products, DS1321 Datasheet - Page 5

• Manufacturer Part Number: DS1321
• Description: IC CTRLR NV W/BATT MON 5V 16-DIP
• Manufacturer: Maxim Integrated Products

Specifications of DS1321

• Controller Type: Nonvolatile RAM
• Voltage - Supply: 4.75 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 16-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

DS1321
FRESHNESS SEAL MODE
When the battery is first attached to the DS1321 without V
power applied, the device does not
CC
immediately provide battery-backup power on V
. Only after V
exceeds V
will the DS1321
CCO
CCI
CCTP
leave Freshness Seal Mode. This mode allows a battery to be attached during manufacturing but not used
until after the system has been activated for the first time. As a result, no battery energy is drained during
storage and shipping.
FUNCTIONAL BLOCK DIAGRAM Figure 2
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