DS1321S+ datasheet(3/13 Pages) MAXIM

Part #	DS1321S+

Description	Flexible Nonvolatile Controller with Lithium Battery Monitor

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Manufacturer	MAXIM [Maxim Integrated Products]

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DS1321

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MEMORY CONFIGURATIONS

The DS1321 can be configured via the MODE pin for three different arrangements of the four attached

SRAMs. The state of the MODE pin is latched at VCCI = VCCTP on power up. See Figure 1 for details.

MEMORY CONFIGURATIONS Figure 1

MODE = GND (4 BANKS WITH 1 SRAM EACH):

MODE = VCCO (2 BANKS WITH 2 SRAM EACH):

MODE FLOATING (1 BANK WITH 4 SRAMs):

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