MXD1210C MAXIM [Maxim Integrated Products], MXD1210C Datasheet

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MXD1210C

Manufacturer Part Number
MXD1210C
Description
Nonvolatile RAM Controller
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet
1.MXD1210C.pdf (9 pages)

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The MXD1210 nonvolatile RAM controller is a very low-
power CMOS circuit that converts standard (volatile)
CMOS RAM into nonvolatile memory. It also continually
monitors the power supply to provide RAM write protec-
tion when power to the RAM is in a marginal (out-of-tol-
erance) condition. When the power supply begins to
fail, the RAM is write-protected, and the device switch-
es to battery-backup mode.
19-0154; Rev 2; 11/05
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
TOP VIEW
Microprocessor Systems
Computers
Embedded Systems
VBATT1
VBATT1
V
V
GND
GND
N.C.
N.C.
N.C.
N.C.
CCO
TOL
CCO
TOL
________________________________________________________________ Maxim Integrated Products
1
2
3
4
5
6
7
8
1
2
4
3
General Description
WIDE SO
MXD1210
MXD1210
DIP/SO
Pin Configurations
Applications
16
15
14
13
12
11
10
6
8
7
5
9
V
VBATT2
CEO
CE
N.C.
V
N.C.
VBATT2
N.C.
CEO
N.C.
CE
CCI
CCI
Nonvolatile RAM Controller
♦ Battery Backup
♦ Memory Write Protection
♦ 230µA Operating Mode Quiescent Current
♦ 2nA Backup Mode Quiescent Current
♦ Battery Freshness Seal
♦ Optional Redundant Battery
♦ Low Forward-Voltage Drop on V
♦ 5% or 10% Power-Fail Detection Options
♦ Tests Battery Condition During Power-Up
♦ 8-Pin SO Available
* Contact factory for dice specifications.
Devices in PDIP and SO packages are available in both lead-
ed and lead-free packaging. Specify lead free by adding the +
symbol at the end of the part number when ordering. Lead free
not available for CERDIP package.
MXD1210C/D
MXD1210CPA
MXD1210CSA
MXD1210CWE
MXD1210EPA
MXD1210ESA
MXD1210EWE
MXD1210MJA
+5V
DECODER
FROM
V
CCI
PART
CE
8
5
4
MXD1210
Typical Operating Circuit
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
1
2
7
6
3
TEMP RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
Ordering Information
VBATT2
VBATT1
V
CCO
CC
Supply Switch
PIN-PACKAGE
16 Wide SO
16 Wide SO
CE
GND
Features
8 CERDIP
8 PDIP
8 PDIP
Dice*
8 SO
8 SO
CMOS
RAM
V
CC
1

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MXD1210C Summary of contents

Page 1

... Battery Freshness Seal ♦ Optional Redundant Battery ♦ Low Forward-Voltage Drop on V Applications ♦ 10% Power-Fail Detection Options ♦ Tests Battery Condition During Power-Up ♦ 8-Pin SO Available PART MXD1210C/D MXD1210CPA MXD1210CSA MXD1210CWE MXD1210EPA MXD1210ESA 8 V CCI MXD1210EWE 7 VBATT2 MXD1210MJA 6 CEO * Contact factory for dice specifications ...

Page 2

... 4mA OL OL TOL = GND V CCTP TOL = V CCO MIN TYP MAX 4.75 5.50 4.50 5.50 2.2 0.8 2.0 4.0 CCO = unless otherwise noted.) A MIN MAX MIN TYP MAX 0.23 0 CCI MXD1210C 0. CCI MXD1210E 0. CCI MXD1210M 0.25 MXD1210C 80 MXD1210E 0.23 75 MXD1210M 0.23 65 ±1.0 ±1.0 2.4 0.4 4.50 4.74 4.25 4.49 UNITS UNITS µA µ ...

Page 3

... BATT MXD1210M CCI ≤ 0.2V (Notes CCO2 BATT CCO V Output open O CONDITIONS OUT = +4.5V to +5.5V, TOL = CCI CCO CONDITIONS MXD1210C 1kΩ 50pF MXD1210E MXD1210M t (Note 5) PF < +4.5V, TOL = CCI CCO A MIN CONDITIONS t REC t To out-of-tolerance condition ...

Page 4

Nonvolatile RAM Controller PIN 8-PIN PDIP/SO 16-PIN WIDE 10, 12, — 14 CCI VBATT1 P VBATT2 P ...

Page 5

Detailed Description The MXD1210 executes five main functions to perform reliable RAM operation and battery backup (see the Typical Operating Circuit and Figure 1): 1) RAM Power-Supply Switch: The switch directs power to the RAM from the incoming supply or ...

Page 6

Nonvolatile RAM Controller 0.2V BATT V IH CEO REC 4.75V 4.5V 4.25V V t CCI R Figure 2. Power-Up Timing Diagram 6 _______________________________________________________________________________________ ...

Page 7

Chip Topography V CCI V CCO VBATT1 TOL GND 0.080" (2.032mm) TRANSISTOR COUNT: 1436; LEAVE SUBSTRATE UNCONNECTED. _______________________________________________________________________________________ Nonvolatile RAM Controller VBATT2 0.121" (3.073mm) CEO CE 7 ...

Page 8

Nonvolatile RAM Controller (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages TOP VIEW FRONT VIEW 8 _______________________________________________________________________________________ E H ...

Page 9

For the latest package outline information go to www.maxim-ic.com/packages.) Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim ...

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