DS3234S# Maxim Integrated Products, DS3234S# Datasheet - Page 3

• 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

ELECTRICAL CHARACTERISTICS (continued)
(V
3.3V, V
V
ELECTRICAL CHARACTERISTICS
(V
Logic 0 Output, 32kHz
Logic 1 Output, DOUT
Logic 0 Output, DOUT, INT/SQW
Logic 0 Output, RST
Output Leakage Current 32kHz,
INT/SQW, DOUT
Input Leakage DIN, CS, SCLK
RST Pin I/O Leakage
TCXO (V
Output Frequency
Frequency Stability vs.
Temperature
Frequency Stability vs. Voltage
Trim Register Frequency
Sensitivity per LSB
Temperature Accuracy
Crystal Aging
Timekeeping Battery Current
(Note 5)
Temperature Conversion Current
Data-Retention Current
BAT
CC
CC
.) (Notes 2, 3)
= 2.0V to 5.5V, V
= 0V, V
BAT
CC
PARAMETER
PARAMETER
= 3.0V, and T
BAT
= 2.3V to 5.5V, V
= 2.0V to 3.8V, T
CC
A
= active supply (see Table 1), T
= +25°C, unless otherwise noted. TCXO operation guaranteed from 2.3V to 5.5V on V
Extremely Accurate SPI Bus RTC with
BAT
A
= 2.3V to 3.8V, T
= -40°C to +85°C, unless otherwise noted.) (Note 2)
SYMBOL
SYMBOL
I
Δf/f
Δf/f
Δf/LSB
BATTDR
I
Temp
I
BATTC
f
V
V
V
V
Δf/V
BATT
OUT
I
I
I
LO
OL
OH
OL
OL
OL
LI
OUT
OUT
_____________________________________________________________________
I
I
I
I
Output high impedance
RST high impedance (Note 6)
V
V
V
Specified at:
After reflow,
not production tested
EOSC = 0, BBSQW = 0,
CRATE1 = CRATE0 = 0
EOSC = 0, BBSQW = 0
EOSC = 1
OL
OH
OL
OL
CC
CC
BAT
A
Integrated Crystal and SRAM
= 1mA
= 3mA
= 1.0mA
= -1.0mA
= -40°C to +85°C, unless otherwise noted.) (Notes 2 and 3)
= 3.3V or V
= 3.3V or
= 3.3V
A
= -40°C to +85°C, unless otherwise noted.) (Typical values are at V
CONDITIONS
CONDITIONS
BAT
= 3.3V
-40°C
+25°C
+70°C
+85°C
First year
0–10 years
0°C to +40°C
-40°C to 0°C and
+40°C to +85°C
V
V
BAT
BAT
= 3.4V
= 3.8V
0.85 x V
-200
MIN
MIN
-3.5
-1
-1
-2
-3
CC
32.768
±1.0
±5.0
TYP
TYP
0.7
0.1
0.4
0.8
1.5
1.5
0
1
CC
and 2.3V to 3.8V on
MAX
+3.5
MAX
+10
400
100
0.4
0.4
0.4
+1
+1
+2
+3
2.3
2.5
UNITS
ppm/V
UNITS
ppm
ppm
ppm
kHz
µA
µA
µA
°C
µA
µA
nA
V
V
V
V
CC
3
=