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PDF DS1710 Data sheet ( Hoja de datos )

Número de pieza DS1710
Descripción Partitioned NV Controller
Fabricantes Dallas 
Logotipo Dallas Logotipo



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No Preview Available ! DS1710 Hoja de datos, Descripción, Manual

www.dalsemi.com
FEATURES
Converts CMOS RAMs into nonvolatile
memories
Automatically selects +3.0V or +5.0V
operation
SOIC version is pin-compatible with the
Dallas Semiconductor DS1210S and
DS1610S NV Controllers
Unconditionally write protects all of memory
when VCC is out of tolerance
Write protects selected blocks of memory
regardless of VCC status when programmed
Automatically switches to battery backup
supply when power-fail occurs
Provides for multiple batteries
Consumes less than 100 nA of battery current
Test battery on power-up by inhibiting the
second memory cycle
Optional 5% or 10% power-fail detection
16-pin DIP or 16-pin SOIC surface mount
package or 20-pin TSSOP package
Low forward voltage drop on the VCC switch
with currents of up to 150 mA
Optional industrial temperature range of
-40°C to +85°C
DS1710
Partitioned NV Controller
PIN ASSIGNMENT
AW
VCCO
AX
VBAT1
AY
TOL
DIS
GND
1
2
3
4
5
6
7
8
16 PFO
15 VCCI
14 AZ
13 VBAT2
12 WEO
11 CEO
10 WEI
9 CEI
16-Pin DIP and 16-Pin SOIC
AW
VCCO
AX
VBAT1
AY
NC
TOL
NC
DIS
GND
1
2
3
4
5
6
7
8
9
10
20 PFO
19 VCCI
18 AZ
17 VBAT2
16 NC
15 WEO
14 NC
13 CEO
12 WEI
11 CEI
20-Pin TSSOP
PIN DESCRIPTION
VCCI - Input 2.7 to 5.5 Volt Supply
VBAT1
- + Battery 1 Input
VBAT2
- + Battery 2 Input
VCCO
- RAM Power (VCC) Supply
GND
- Ground
CEI - Chip Enable Input
CEO - Chip Enable Output
WEI - Write Enable Input
WEO
TOL
AW - AZ
DIS
- Write Enable Output
- Power Supply Tolerance Select
- Address Inputs
- Memory Partition Disable
PFO - Power-fail Output
NC - No Connect
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DS1710 pdf
ABSOLUTE MAXIMUM RATINGS*
Voltage on Any Pin Relative to Ground
Operating Temperature
Storage Temperature
Soldering Temperature
-0.5V to +7.0V
0°C to 70°C
-55°C to +125°C
260°C for 10 seconds
DS1710
* This is a stress rating only and functional operation of the device at these or any other conditions
above those indicated in the operation sections of this specification is not implied. Exposure to
absolute maximum rating conditions for extended periods of time may affect reliability.
RECOMMENDED DC OPERATING CONDITIONS
PARAMETER
Pin 6 = GND Supply Voltage
(5V Operation)
Pin 6 = VCCO Supply Voltage
(5V Operation)
Pin 6 = GND Supply Voltage
(3V Operation)
Logic 1 Input
Logic 0 Input
Battery Input
SYMBOL
VCCI
VCCI
VCCI
VIH
VIL
VBAT1,
VBAT2
MIN
4.75
4.5
2.7
2.0
-0.3
2.0
TYP
5.0
5.0
3.0
MAX
5.5
(0°C to 70°C)
UNITS NOTES
V1
5.5 V
1
4.0 V
1
VCC+0.3
+0.8
4.0
V
V
V
1
1
1, 2
DC ELECTRICAL CHARACTERISTICS (0°C to 70°C; VCCI<VBAT, VCCI<VCCTP2)
PARAMETER
SYMBOL MIN
TYP MAX UNITS NOTES
CEO Output
VOHL
VBAT-0.2
V
WEO Output
VOHL
VBAT-0.2
V
VBAT1 or VBAT1
Battery Current
IBAT
100 nA 2, 3
Battery Backup Current @
VCCO = VBAT -0.2V
ICCO2
150 µA 6, 8
CAPACITANCE
PARAMETER
Input Capacitance
Output Capacitance
SYMBOL
CIN
COUT
MIN
(TA = 25°C)
TYP MAX UNITS NOTES
5 pF
7 pF
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DS1710 arduino
NOTES:
1. All voltages are reference to ground
DS1710
2. Only one battery input is required.
3. Measured with outputs open circuited.
4. ICC01 is the maximum average load which the DS1710 can supply to the memories.
5. ZCE is an average input-to-output impedance as the input is swept from ground to VCCI and less than 4
mA is forced through ZCE.
6. ICC02 is the maximum average load current which the DS1710 can supply to the memories in the
battery backup mode.
7. tCE max must be met to insure data integrity on power loss.
8. Chip Enable Output CEO can only sustain leakage current in the battery mode.
9. Applies only when loading partition switch.
10. Measured with a load as shown in Figure 1.
11. Measured with DIS at a logic high level.
12. CEO and WEO will be held high for a time equal to tREC after VCCI crosses VCCTP2.
13. tR is the slew rate of VCCI from 4.25V to 4.75V or 2.50 to +2.70 volts.
14. CEI , WEI , AW - AZ run at minimum timing set and at voltage levels of 0V to 3V.
15. All inputs within 0.3V of ground or VCCI and CEI within 0.3V of VCCI.
16. The power-fail output signal ( PFO ) is driven active (VOL = 0.4V) when the VCC trip point occurs.
While active, the PFO pin can sink 4 mA and will maintain a maximum output voltage of 0.4 volts.
When inactive, the voltage output of PFO is 2.4 volts minimum and will source a current of 1 mA.
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