DS1321E+ Maxim Integrated Products, DS1321E+ Datasheet - Page 3

• Manufacturer Part Number: DS1321E+
• Description: IC CTRL NV W/BATT MON 5V 20TSSOP
• Manufacturer: Maxim Integrated Products

Specifications of DS1321E+

• Controller Type: Nonvolatile RAM
• Voltage - Supply: 4.75 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS 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.