DS1210S+TRL Maxim Integrated Products, DS1210S+TRL Datasheet

IC CONTROLLER CHIP NV 16-SOIC

DS1210S+TRL

Manufacturer Part Number
DS1210S+TRL
Description
IC CONTROLLER CHIP NV 16-SOIC
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of DS1210S+TRL

Controller Type
Nonvolatile RAM
Voltage - Supply
4.75 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Package / Case
16-SOIC (0.300", 7.5mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
FEATURES
§ Converts CMOS RAMs into Nonvolatile
§ Unconditionally Write Protects when V
§ Automatically Switches to Battery when
§ Space-Saving 8-Pin DIP
§ Consumes <100nA of Battery Current
§ Tests Battery Condition on Power up
§ Provides for Redundant Batteries
§ Optional 5% or 10% Power-Fail Detection
§ Low Forward Voltage Drop on the V
§ Optional 16-Pin SOIC Surface Mount
§ Optional Industrial (N) Temperature Range of
DESCRIPTION
The DS1210 Nonvolatile Controller Chip is a CMOS circuit which solves the application problem of
converting CMOS RAM into nonvolatile memory. Incoming power is monitored for an out-of-tolerance
condition. When such a condition is detected, chip enable is inhibited to accomplish write protection and
the battery is switched on to supply the RAM with uninterrupted power. Special circuitry uses a low-
leakage CMOS process which affords precise voltage detection at extremely low battery consumption.
The 8-pin DIP package keeps PC board real estate requirements to a minimum. By combining the
DS1210 Nonvolatile Controller Chip with a CMOS memory and batteries, nonvolatile RAM operation
can be achieved.
www.maxim-ic.com
Memories
Out-of-Tolerance
Power-Fail Occurs
Switch
Package
-40°C to +85°C
CC
CC
is
1 of 6
PIN ASSIGNMENT
PIN DESCRIPTION
V
V
TOL
GND
V
V
NC
CE
CEO
CCO
BAT1
BAT2
CCI
Nonvolatile Controller Chip
VBAT1
VCCO
GND
TOL
NC
NC
NC
NC
DS1210S 16-pin SOIC (300-mil)
VBAT1
VCCO
See Mech. Drawings Section
GND
See Mech. Drawings Section
TOL
DS1210 8-pin DIP (300-mil)
1
2
3
5
6
7
8
4
1
2
3
4
- RAM Supply
- + Battery 1
- Power Supply Tolerance
- Ground
- Chip Enable Input
- Chip Enable Output
- + Battery 2
- + Supply
- No Connect
16
15
14
13
12
11
10
8
7
6
5
9
VCCI
VBAT2
CEO
CE
NC
VCCI
NC
VBAT2
NC
CEO
NC
CE
DS1210
090503

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DS1210S+TRL Summary of contents

Page 1

FEATURES § Converts CMOS RAMs into Nonvolatile Memories § Unconditionally Write Protects when V Out-of-Tolerance § Automatically Switches to Battery when Power-Fail Occurs § Space-Saving 8-Pin DIP § Consumes <100nA of Battery Current § Tests Battery Condition on Power ...

Page 2

OPERATION The DS1210 nonvolatile controller performs five circuit functions required to battery back up a RAM. First, a switch is provided to direct power from the battery or the incoming supply (V which is greater. This switch has a voltage ...

Page 3

SECTION A - BATTERY BACKUP Figure 1 BATTERY BACKUP CURRENT DRAIN EXAMPLE CONSUMPTION DS1210 I 100 nA BAT 10 mA RAM I CC02 10.1 mA Total Drain SECTION B - PROCESSOR RESET ...

Page 4

ABSOLUTE MAXIMUM RATINGS* Voltage on Any Pin Relative to Ground Operating Temperature Storage Temperature Soldering Temperature * This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the ...

Page 5

CAPACITANCE PARAMETER Input Capacitance Output Capacitance AC ELECTRICAL CHARACTERISTICS PARAMETER Propagation Delay CE High to Power-Fail CE (See Note 9; V Recovery at Power Up V Slew Rate Power-Down CC V Slew Rate Power-Down CC V Slew Rate Power-Down CC ...

Page 6

TIMING DIAGRAM: POWER-UP TIMING DIAGRAM: POWER-DOWN OUTPUT LOAD Figure ...

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