DS1220AB-200+ Dallas Semiconductor, DS1220AB-200+ Datasheet

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DS1220AB-200+

Manufacturer Part Number
DS1220AB-200+
Description
RAM NV 16K-5% VTP 200NS
Manufacturer
Dallas Semiconductor
Datasheet

Specifications of DS1220AB-200+

Capacitance, Input
5 pF
Capacitance, Output
5 pF
Current, Input, Leakage
±1 μA
Current, Operating
75 mA
Current, Output, Leakage
±1
Data Retention
10 yrs.
Density
16K
Interface
Parallel Bus
Memory Type
Non-Volatile SRAM
Organization
2K×8
Package Type
720 EMOD
Temperature, Operating
0 to +70 °C
Time, Access
200 ns
Time, Address Hold
5
Time, Fall
5 ns
Time, Rise
5 ns
Voltage, Input, High
5 V
Voltage, Input, Low
0.8 V
Voltage, Supply
5 V
Lead Free Status / Rohs Status
RoHS Compliant part Electrostatic Device
FEATURES
DESCRIPTION
The DS1220AB and DS1220AD 16k Nonvolatile SRAMs are 16,384-bit, fully static, nonvolatile SRAMs
organized as 2048 words by 8 bits. Each NV SRAM has a self-contained lithium energy source and
control circuitry which constantly monitors V
occurs, the lithium energy source is automatically switched on and write protection is unconditionally
enabled to prevent data corruption. The NV SRAMs can be used in place of existing 2k x 8 SRAMs
directly conforming to the popular bytewide 24-pin DIP standard. The devices also match the pinout of
the 2716 EPROM and the 2816 EEPROM, allowing direct substitution while enhancing performance.
There is no limit on the number of write cycles that can be executed and no additional support circuitry is
required for microprocessor interfacing.
10 years minimum data retention in the
absence of external power
Data is automatically protected during power
loss
Directly replaces 2k x 8 volatile static RAM
or EEPROM
Unlimited write cycles
Low-power CMOS
JEDEC standard 24-pin DIP package
Read and write access times as fast as 100 ns
Lithium energy source is electrically
disconnected to retain freshness until power
is applied for the first time
Full ±10% V
Optional ±5% V
(DS1220AB)
Optional industrial temperature range of
-40°C to +85°C, designated IND
CC
operating range (DS1220AD)
CC
operating range
CC
for an out-of-tolerance condition. When such a condition
1 of 10
PIN ASSIGNMENT
PIN DESCRIPTION
A0-A10
DQ0-DQ7
V
GND
CE
WE
OE
CC
24-Pin ENCAPSULATED PACKAGE
16k Nonvolatile SRAM
GND
DQ0
DQ1
DQ2
A7
A6
A5
A4
A3
A2
A1
A0
720-mil EXTENDED
1
2
3
4
5
6
7
8
9
10
11
12
- Address Inputs
- Data In/Data Out
- Chip Enable
- Write Enable
- Output Enable
- Power (+5V)
- Ground
DS1220AB/AD
24
23
22
21
20
19
18
17
16
15
14
13
VCC
WE
A8
A9
OE
A10
CE
DQ7
DQ6
DQ5
DQ4
DQ3

Related parts for DS1220AB-200+

DS1220AB-200+ Summary of contents

Page 1

... Optional industrial temperature range of -40°C to +85°C, designated IND DESCRIPTION The DS1220AB and DS1220AD 16k Nonvolatile SRAMs are 16,384-bit, fully static, nonvolatile SRAMs organized as 2048 words by 8 bits. Each NV SRAM has a self-contained lithium energy source and control circuitry which constantly monitors V occurs, the lithium energy source is automatically switched on and write protection is unconditionally enabled to prevent data corruption ...

Page 2

... IND parts +260°C for 10 seconds (Wave or Hand Solder Only) SYMBOL MIN TYP MAX UNITS V 4.75 5.0 5. 4.50 5 0.0 +0.8 IL =5V ± 5% for DS1220AB =5V ± 10% for DS1220AD SYMBOL MIN TYP MAX UNITS -1.0 I +1.0 IL -1 ...

Page 3

... DS1220AD-100 MIN MAX t 100 RC t 100 ACC 100 COE 100 WR1 t 10 WR2 35 t ODW 5 t OEW DH1 t 10 DH2 DS1220AB/AD (T See Note 10 =5.0V ± 5% for DS1220AB =5.0V ± 10% for DS1220AD) CC DS1220AB-120 DS1220AD-120 UNITS MIN MAX 120 ns 120 120 120 NOTES ...

Page 4

... Data Hold Time DS1220AB-150 SYMBOL DS1220AD-150 MIN MAX t 150 RC t 150 ACC 150 COE 150 WC t 100 WR1 t 10 WR2 35 t ODW 5 t OEW DH1 t 10 DH2 DS1220AB/AD DS1220AB-200 DS1220AD-200 UNITS NOTES MIN MAX 200 ns 200 ns 100 ns 200 200 ns 150 (cont’ ...

Page 5

... MIN t Inactive PD t 300 F t 300 REC SYMBOL MIN TYP MAX UNITS t DR during write cycle, the output buffers remain in a high-impedance state DS1220AB/ See Note 10) A TYP MAX UNITS μs 1.5 μs μ 125 years is measured from the latter NOTES 11 =25° ...

Page 6

... DS1220AB-120 0°C to +70°C DS1220AB-120+ 0°C to +70°C DS1220AB-150 0°C to +70°C DS1220AB-150+ 0°C to +70°C DS1220AB-200 0°C to +70°C DS1220AB-200+ 0°C to +70°C DS1220AB-200IND -40°C to +85°C DS1220AB-200IND+ -40°C to +85°C DS1220AD-100 0°C to +70°C DS1220AD-100+ 0°C to +70°C DS1220AD-100IND -40° ...

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