Rainbow Electronics DS1315 - Manual

E Copyright 1995 by Dallas Semiconductor Corporation.
All Rights Reserved. For important information regarding
patents and other intellectual property rights, please refer to
Dallas Semiconductor data books.
DS1315
Phantom Time Chip
DS1315
PRELIMINARY
041697 1/22
FEATURES
•
Real time clock keeps track of hundredths of seconds,
seconds, minutes, hours, days, date of the month,
months, and years
•
Adjusts for months with fewer than 31 days
•
Automatic leap year correction valid up to 2100
•
No address space required to communicate with RTC
•
Provides nonvolatile controller functions for battery
backup of SRAM
•
Supports redundant battery attachment for high–reli-
ability applications
•
Full
±
10% V
CC
operating range
•
+3.3 volt or +5 volt operation
•
Industrial (–45 ° C to +85 ° C) operating temperature
ranges available
•
Drop in replacement for DS1215
ORDERING INFORMATION
DS1315XX–XX
33–3.3 volt operation
5–5 volt operation
blank–commercial temp range
N–industrial temp range
blank–16–pin DIP
S–16–pin SOIC
E–20–pin TSSOP
PIN ASSIGNMENT
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
X1
X2
WE
BAT1
GND
D
Q
GND
V CCI
V CCO
BAT2
RST
OE
CEI
CEO
ROM/RAM
16–PIN DIP (300 MIL)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
X1
X2
WE
BAT1
GND
D
Q
GND
V CCI
V CCO
BAT2
RST
OE
CEI
CEO
ROM/RAM
16–PIN SOIC (300 MIL)
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
X1
X2
WE
NC
BAT1
GND
NC
D
Q
GND
V CCI
V CCO
BAT2
NC
RST
OE
NC
CEI
CEO
ROM/RAM
20–PIN TSSOP