DS1710 Datasheet, PDF (1/14 Pages) Dallas Semiconductor – Partitioned NV Controller

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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 V_CC is out of tolerance
Write protects selected blocks of memory
regardless of V_CC 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 V_CC 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
1
VCCO
2
AX
3
VBAT1
4
AY
5
TOL
6
DIS
7
GND
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
1
VCCO
2
AX
3
VBAT1
4
AY
5
NC 6
TOL 7
NC 8
DIS 9
GND 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
V_CCI
- Input 2.7 to 5.5 Volt Supply
V_BAT1
- + Battery 1 Input
V_BAT2
- + Battery 2 Input
V_CCO
- RAM Power (V_CC) Supply
GND
- Ground
CEI
- Chip Enable Input
CEO
- Chip Enable Output
WEI
- Write Enable Input
WEO
TOL
A_W - A_Z
DIS
- Write Enable Output
- Power Supply Tolerance Select
- Address Inputs
- Memory Partition Disable
PFO
- Power-fail Output
NC
- No Connect
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