DS3234S# Maxim Integrated Products, DS3234S# Datasheet - Page 4

• 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

AC ELECTRICAL CHARACTERISTICS
(V
POWER-SWITCH CHARACTERISTICS
(T
CAPACITANCE
(T
Extremely Accurate SPI Bus RTC with
Integrated Crystal and SRAM
4
SCLK Clock Frequency
Data to SCLK Setup
SCLK to Data Hold
SCLK to CS Setup
SCLK to Data Valid (Note 7)
SCLK Low Time
SCLK High Time
SCLK Rise and Fall
CS to SCLK Setup
SCLK to CS Hold
CS Inactive Time
CS to Output High Impedance
Pushbutton Debounce
Reset Active Time
Oscillator Stop Flag (OSF) Delay
Temperature Conversion Time
Capacitance on All Input Pins
Capacitance on All Output Pins
V
V
V
V
Recovery at Power-Up
CC
A
A
CC
PF(MIN)
CC
PF(MAX)
= -40°C to +85°C)
= +25°C)
_____________________________________________________________________
= 2.0V to 5.5V, T
Fall Time; V
Rise Time; V
PARAMETER
PARAMETER
PARAMETER
PF(MAX)
PF(MIN)
A
= -40°C to +85°C, unless otherwise noted.) (Note 2)
to
to
SYMBOL
SYMBOL
SYMBOL
t
PB
t
t
t
t
t
t
CONV
t
t
t
f
t
t
CWH
VCCR
t
CDH
CDD
R
CCH
VCCF
C
C
t
CCS
t
t
CDZ
SCL
t
RST
OSF
REC
DC
CH
CC
CL
, t
IN
IO
DB
F
2.7V ≤ V
2.0V ≤ V
2.7V ≤ V
2.0V ≤ V
2.7V ≤ V
2.0V ≤ V
2.7V ≤ V
2.0V ≤ V
2.7V ≤ V
2.0V ≤ V
(Note 8)
(Note 9)
(Note 11)
Outputs high impedance (Note 11)
(Note 10)
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
≤ 5.5V
< 2.7V
≤ 5.5V
< 2.7V
≤ 5.5V
< 2.7V
≤ 5.5V
< 2.7V
≤ 5.5V
< 2.7V
CONDITIONS
CONDITIONS
CONDITIONS
MIN
MIN
110
220
110
220
400
100
200
400
MIN
300
30
30
30
0
TYP
TYP
250
250
100
125
TYP
125
MAX
MAX
MAX
160
200
200
300
80
40
10
10
4
2
UNITS
UNITS
UNITS
MHz
ms
ms
ms
ms
pF
pF
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
µs
µs