DS3234S# Maxim Integrated Products, DS3234S# Datasheet - Page 6

• Manufacturer Part Number: DS3234S#
• Description: IC RTC W/TCXO 20-SOIC
• Manufacturer: Maxim Integrated Products
• Type: Clock/Calendar/TCXO/Crystalr

Specifications of DS3234S#

• Memory Size: 2K (256 x 8)
• Time Format: HH:MM:SS (12/24 hr)
• Date Format: YY-MM-DD-dd
• Interface: SPI, 3-Wire Serial
• Voltage - Supply: 2 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Function: Clock/Calendar/Alarm/Battery Backup/Interrupt
• Rtc Memory Size: 256 Byte
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Rtc Bus Interface: Serial (4-Wire, SPI)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Extremely Accurate SPI Bus RTC with
Integrated Crystal and SRAM
6
DOUT
NOTE: SCLK CAN BE EITHER POLARITY, SHOWN FOR CPOL = 1.
SCLK
DIN
CS
_____________________________________________________________________
t
CCS
DOUT
SCLK
CS
DIN
t
DC
t
CC
t
DC
t
CC
W/R
W/R
t
CDH
t
CDH
WRITE ADDRESS BYTE
t
t
CL
CL
WRITE ADDRESS BYTE
t
t
R
R
HIGH IMPEDANCE
A6
A6
t
CH
t
CH
HIGH IMPEDANCE
t
F
A0
t
F
A0
Timing Diagram—SPI Read Transfer
Timing Diagram—SPI Write Transfer
D7
t
CDD
WRITE DATA BYTE
D7
D0
READ DATA BYTE
t
CWH
t
CCH
D0
t
CDZ