DS1673E-3/T&R Maxim Integrated Products, DS1673E-3/T&R Datasheet - Page 4

• Manufacturer Part Number: DS1673E-3/T&R
• Description: IC CTRLR SYSTEM PORT 3V 20-TSSOP
• Manufacturer: Maxim Integrated Products
• Type: Portable System Controllerr

Specifications of DS1673E-3/T&R

• Time Format: HH:MM:SS (12/24 hr)
• Date Format: YY-MM-DD-dd
• Interface: 3-Wire Serial
• Voltage - Supply: 2.7 V ~ 3.3 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 20-TSSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Memory Size: -

DS1673
POWER-UP/POWER-DOWN CONSIDERATIONS
When V
is applied to the DS1673 and reaches a level greater than V
(power-fail trip point), the
CC
CCTP
device becomes fully accessible after t
(250ms typical). Before t
elapses, all inputs are disabled.
RPU
RPU
When V
drops below V
, the device is switched over to the V
supply.
CC
CCSW
BAT
During power-up, when V
returns to an in-tolerance condition, the
pin is kept in the active state
RST
CC
for 250ms (typical) to allow the power supply and microprocessor to stabilize.
ADDRESS/COMMAND BYTE
The command byte for the DS1673 is shown in Figure 2. Each data transfer is initiated by a command
byte. Bits 0 through 6 specify the address of the registers to be accessed. The MSB (bit 7) is the
Read/Write bit. This bit specifies whether the accessed byte will be read or written. A read operation is
selected if bit 7 is a 0 and a write operation is selected if bit 7 is a one. The address map for the DS1673 is
shown in Figure 3.
ADDRESS/COMMAND BYTE Figure 2
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