DS1321_04 Datasheet, PDF (3/12 Pages) Dallas Semiconductor – Flexible Nonvolatile Controller with Lithium Battery Monitor

DS1321
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 V_CCI = V_CCTP 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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