DS17285S-3+ Maxim Integrated Products, DS17285S-3+ Datasheet - Page 10
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DS17285S-3+
Manufacturer Part Number
DS17285S-3+
Description
IC RTC 3V 2K NV RAM 24-SOIC
Manufacturer
Maxim Integrated Products
Type
Clock/Calendar/NVSRAMr
Datasheet
1.DS17285S-5.pdf
(31 pages)
Specifications of DS17285S-3+
Memory Size
16K (2K x 8)
Time Format
HH:MM:SS (12/24 hr)
Date Format
YY-MM-DD-dd
Interface
Parallel
Voltage - Supply
2.7 V ~ 3.7 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
24-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Real-Time Clocks
Figure 1. Functional Diagram
10
____________________________________________________________________
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