DS1248Y-70+ Dallas Semiconductor, DS1248Y-70+ Datasheet

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DS1248Y-70+

Manufacturer Part Number
DS1248Y-70+
Description
PHNTHM RTC MOD 128K X 8 70NS
Manufacturer
Dallas Semiconductor
Datasheet

Specifications of DS1248Y-70+

Capacitance, Input
5 pF
Capacitance, Output
5 pF
Current, Input, Leakage
±1 μA
Current, Operating
85 mA
Current, Output, Leakage
±1
Data Retention
10 yrs.
Density
1024K
Interface
Parallel Bus
Memory Type
Non-Volatile SRAM
Organization
128K×8
Package Type
EDIP
Temperature, Operating
0 to +70 °C
Time, Access
70 ns
Time, Address Hold
5
Time, Fall
5 ns
Time, Rise
5 ns
Voltage, Input, High
5.3 V
Voltage, Input, Low
0.8 V
Voltage, Supply
5 V
Lead Free Status / Rohs Status
RoHS Compliant part
FEATURES
§ Real-Time Clock (RTC) Keeps Track of
§ 128k x 8 NV SRAM Directly Replaces
§ Embedded Lithium Energy Cell Maintains
§ Watch Function is Transparent to RAM
§ Month and Year Determine the Number of
§ Full 10% Operating Range
§ Operating Temperature Range: 0°C to +70°C
§ Over 10 Years of Data Retention in the
§ Lithium Energy Source is Electrically
§ DIP Module Only
§ Standard 32-Pin JEDEC Pinout
§ Underwriters Laboratory (UL) Recognized
§ Available in Lead-Free Package
§ PowerCap
PowerCap is a registered trademark of Dallas Semiconductor Corp.
Hundredths of Seconds, Minutes, Hours,
Days, Date of the Month, Months, and Years
Volatile Static RAM or EEPROM
Calendar Operation and Retains RAM Data
Operation
Days in Each Month; Valid Up to 2100
Absence of Power
Disconnected to Retain Freshness Until
Power is Applied for the First Time
Surface Mountable Package for Direct
Replaceable Battery (PowerCap)
Pin-for-Pin Compatible with DS1244P and
Connection to PowerCap Containing
Battery and Crystal
DS1251P
®
Module Board Only
1024k NV SRAM with Phantom Clock
1 of 18
TOP VIEW
PIN CONFIGURATIONS
GND
N.C.
DQ7
DQ6
DQ5
DQ4
DQ3
DQ2
DQ1
DQ0
RST
A15
A16
V
WE
OE
CE
CC
(Uses DS9034PCX PowerCap)
GND
DQ0
DQ1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
DQ2
RST
A16
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
PowerCap Module Board
Encapsulated DIP
X1
(740-mil Flush)
DS1248/DS1248P
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
DS1248P
GND
DS1248
V
BAT
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
X2
V
A15
WE
A13
A8
A9
A11
OE
A10
CE
DQ7
DQ6
DQ5
DQ4
DQ3
N.C.
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
CC
REV: 070705
N.C.
N.C.
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0

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DS1248Y-70+ Summary of contents

Page 1

... Module Board Only Surface Mountable Package for Direct Connection to PowerCap Containing Battery and Crystal Replaceable Battery (PowerCap) Pin-for-Pin Compatible with DS1244P and DS1251P PowerCap is a registered trademark of Dallas Semiconductor Corp. 1024k NV SRAM with Phantom Clock PIN CONFIGURATIONS TOP VIEW RST A16 A14 ...

Page 2

... DS1248YP-70 0°C to +70°C DS1248W-120 0°C to +70°C DS1248W-120IND -40°C to +85°C DS1248WP-120 0°C to +70°C DS1248WP-120IND -40°C to +85°C DS1248Y-70+ 0°C to +70°C DS1248Y-70IND+ -40°C to +85°C DS1248Y-100IND+ -40°C to +85°C DS1248YP-70+ 0°C to +70°C DS1248W-120+ 0°C to +70°C DS1248W-120IND+ -40° ...

Page 3

ABSOLUTE MAXIMUM RATINGS Voltage Range on Any Pin Relative to Ground……………………………………………..-0.3V to +6.0V Storage Temperature Range.………………………………………………40ºC to +85ºC (noncondensing) Soldering Temperature..………………………………………...+260°C for 10 seconds (EDIP) (Note 13); This is a stress rating only and functional operation of the device at ...

Page 4

... Write Pulse Width Address Setup Time Write Recovery Time Output High-Z from WE Output Active from WE Data Setup Time Data Hold Time from WE SYMBOL MIN CCS1 I CCS2 I CC01 V 2. SYMBOL MIN I/O DS1248Y-70 SYMBOL MIN ACC COE ODW t 5 OEW t 30 ...

Page 5

PHANTOM CLOCK AC ELECTRICAL CHARACTERISTICS Over the Operating Range (5V) PARAMETER Read Cycle Time CE Access Time OE Access Time CE to Output Low Output Low Output High Output High-Z Read Recovery Write Cycle ...

Page 6

MEMORY AC ELECTRICAL CHARACTERISTICS Over the Operating Range (3.3V) PARAMETER Read Cycle Time Access Time OE to Output Valid CE to Output Valid Output Active Output High-Z from Deselection Output Hold from Address Change Write Cycle ...

Page 7

POWER-DOWN/POWER-UP TIMING Over the Operating Range (3.3V) PARAMETER before Power-Down IH V Slew from PF(MAX PF(MIN Slew from PF(MAX ...

Page 8

AC TEST CONDITIONS Output Load: 50pF + 1TTL Gate Input Pulse Levels Timing Measurement Reference Levels Input: 1.5V Output: 1.5V Input Pulse Rise and Fall Times: 5ns NOTES high for a read cycle. 2) ...

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