DS1321S/T&R Maxim Integrated Products, DS1321S/T&R Datasheet - Page 3

• Manufacturer Part Number: DS1321S/T&R
• Description: IC CTRLR NV W/BATT MON 5V 16SOIC
• Manufacturer: Maxim Integrated Products

Specifications of DS1321S/T&R

• Controller Type: Nonvolatile RAM
• Voltage - Supply: 4.75 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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
MEMORY CONFIGURATIONS Figure 1
MODE = GND (4 BANKS WITH 1 SRAM EACH):
MODE = V
MODE FLOATING (1 BANK WITH 4 SRAMs):
CCO
(2 BANKS WITH 2 SRAM EACH):
3 of 12
CCI
= V
CCTP
on power up. See Figure 1 for details.