DS17485S-3/T&R Maxim Integrated Products, DS17485S-3/T&R Datasheet - Page 10

• Manufacturer Part Number: DS17485S-3/T&R
• Description: Real Time Clock
• Manufacturer: Maxim Integrated Products

Specifications of DS17485S-3/T&R

• Function: Clock, Calendar, Alarm
• Rtc Memory Size: 4096 B
• Supply Voltage (max): 3.7 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Rtc Bus Interface: Multiplexed
• Package / Case: SOIC-24
• Time Format: HH:MM:SS, Binary
• Date Format: DW:DM:M:Y, Binary
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Real-Time Clocks
Figure 1. Functional Diagram
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DS17x87
ONLY
AD0–AD7
ALE
WR
CS
RD
V
BAUX
V
GND
V
BAT
CC
X1
X2
OSCILLATOR
INTERFACE
CONTROL
POWER
DS17x85/87
BUS
DIVIDE
CLOCK/CALENDAR
BY 8
EXTENDED
USER RAM
UPDATE LOGIC
2k/4k/8k
BYTES
DIVIDE BY
64
64-BIT SERIAL NUMBER
EXTENDED RAM ADDR/
16:1 MUX
EXTENDED CONTROL/
STATUS REGISTERS
CENTURY COUNTER
DATA REGISTERS
RTC ADDRESS-2
RTC ADDRESS-3
DATE ALARM
CLOCK/CALENDAR AND
CALENDAR AND ALARM
USER RAM
114 BYTES
REGISTERS A, B, C, D
ALARM REGISTERS
BUFFERED CLOCK/
SELECT
REGISTERS
GENERATOR
GENERATOR
SQUARE-
WAVE
CLEAR
LOGIC
RAM
IRQ
DIVIDE BY
64
IRQ
PWR
KS
SQW
RLCR