DS1390U-18+ Maxim Integrated Products, DS1390U-18+ Datasheet - Page 5

• Manufacturer Part Number: DS1390U-18+
• Description: IC RTC W/CHARGER 10-USOP
• Manufacturer: Maxim Integrated Products
• Type: Clock/Calendar/Trickle-Chargerr

Specifications of DS1390U-18+

• Time Format: HH:MM:SS:hh (12/24 hr)
• Date Format: YY-MM-DD-dd
• Interface: SPI, 3-Wire Serial
• Voltage - Supply: 1.71 V ~ 1.89 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -

Figure 2a. Timing Diagram—SPI Write Transfer (Mode 3)
Figure 2b. Timing Diagram—SPI Write Transfer (Mode 0)
CPHA = 1
CPHA = 0
SCLK
DOUT
SCLK
DOUT
NOTE: SCLK CAN BE EITHER POLARITY SHOWN FOR CPOL = 1.
DIN
DIN
NOTE: SCLK CAN BE EITHER POLARITY SHOWN FOR CPOL = 0.
CS
CS
t
DC
t
CC
t
CC
t
DC
W/R
W/R
t
CDH
t
CDH
t
t
CL
R
t
R
t
CL
Low-Voltage SPI/3-Wire RTCs with
WRITE ADDRESS BYTE
WRITE ADDRESS BYTE
_____________________________________________________________________
A6
A6
t
t
CH
CH
t
t
F
F
HIGH IMPEDANCE
HIGH IMPEDANCE
A0
A0
Trickle Charger
D7
D7
READ DATA BYTE
READ DATA BYTE
t
CCH
D0
D0
t
CWH
t
CWH
t
CCH
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