DS1390U-33+ Dallas Semiconductor, DS1390U-33+ Datasheet - Page 4

• Manufacturer Part Number: DS1390U-33+
• Description: SERIAL RTC 3.3V USOP
• Manufacturer: Dallas Semiconductor

Specifications of DS1390U-33+

• Lead Free Status / Rohs Status: RoHS Compliant part

Low-Voltage SPI/3-Wire RTCs with
Trickle Charger
Figure 1a. Timing Diagram—SPI Read Transfer (Mode 3)
Figure 1b. Timing Diagram—SPI Read Transfer (Mode 0)
4
CPHA = 1
CPHA = 0
SCLK
DOUT
DOUT
SCLK
NOTE: SCLK CAN BE EITHER POLARITY SHOWN FOR CPOL = 1.
_____________________________________________________________________
NOTE: SCLK CAN BE EITHER POLARITY SHOWN FOR CPOL = 0.
DIN
CS
DIN
CS
t
DC
t
CC
t
CC
t
DC
W/R
W/R
t
CDH
t
CDH
t
t
CL
R
t
t
R
CL
HIGH IMPEDANCE
WRITE ADDRESS BYTE
WRITE ADDRESS BYTE
HIGH IMPEDANCE
A6
t
A6
CH
t
CH
t
F
t
F
A0
A0
t
CDD
t
CDD
D7
D7
READ DATA BYTE
READ DATA BYTE
D0
D0
t
t
CDZ
CDZ