MAX800 Maxim Integrated Products, MAX800 Datasheet
MAX800
Manufacturer Part Number
MAX800
Description
Microprocessor Supervisory Circuits
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX800.pdf
(19 pages)
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The MAX691A/MAX693A/MAX800L/MAX800M micro-
processor (µP) supervisory circuits are pin-compatible
upgrades to the MAX691, MAX693, and MAX695. They
improve performance with 30µA supply current, 200ms
typ reset active delay on power-up, and 6ns chip-
enable propagation delay. Features include write pro-
tection of CMOS RAM or EEPROM, separate watchdog
outputs, backup-battery switchover, and a RESET out-
put that is valid with V
MAX800L have a 4.65V typical reset-threshold voltage,
and the MAX693A/MAX800Ms’ reset threshold is 4.4V
typical. The MAX800L/MAX800M guarantee power-fail
accuracies to ±2%.
________________________Applications
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.
19-0094; Rev 9; 4/02
SuperCap is a registered trademark of Baknor Industries. MaxCap is a registered trademark of The Carborundum Corp.
+8V
*MaxCap
REGULATOR
Computers
Controllers
Intelligent Instruments
Automotive Systems
Critical µP Power Monitoring
CONNECTION
5V
NO
1N4148
0.47F*
Typical Operating Circuit
SYSTEM STATUS INDICATORS
1
9
4
7
8
________________________________________________________________ Maxim Integrated Products
GND
OSC IN
OSC SEL
LOW LINE WDO
VBATT
PFI
3
V
6
CC
MAX800M
MAX691A
MAX693A
MAX800L
CC
General Description
BATT ON
14
5
down to 1V. The MAX691A/
Microprocessor Supervisory Circuits
CE OUT
RESET
CE IN
V
WDI
PFO
OUT
12
13
11
10
15
2
0.1µF
AUDIBLE
ALARM
ADDRESS
DECODE
CMOS RAM
I/O
NMI
RESET
A0-A15
µP
o 200ms Power-OK/Reset Timeout Period
o 1µA Standby Current, 30µA Operating Current
o On-Board Gating of Chip-Enable Signals,
o MaxCap
o Guaranteed R R E E S S E E T T Assertion to V
o Voltage Monitor for Power-Fail or Low-Battery
o Power-Fail Accuracy Guaranteed to ±2%
o Available in 16-Pin Narrow SO, Plastic
____________________________Features
Ordering Information continued on last page.
*Dice are specified at T
MAX691ACUE
MAX691ACSE
MAX691ACWE
MAX691ACPE
MAX691AC/D
MAX691AEUE
MAX691AESE
MAX691AEWE
MAX691AEPE
MAX691AEJE
MAX691AMJE
10ns max Delay
Warning
(MAX800L/M)
DIP, and TSSOP Packages
TOP VIEW
PART
™
LOW LINE
BATT ON
OSC SEL
or SuperCap
OSC IN
VBATT
V
GND
V
OUT
CC
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
-40°C to +85°C
1
2
3
4
5
6
7
8
TEMP. RANGE
A
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
DIP/SO/TSSOP
= +25 °C, DC parameters only.
Ordering Information
MAX800M
MAX691A
MAX693A
MAX800L
™
Pin Configuration
Compatible
16
15
14
13
12
11
10
9
WDI
PFO
PFI
RESET
RESET
WDO
CE IN
CE OUT
16 TSSOP
16 Narrow SO
16 Wide SO
16 Plastic DIP
Dice*
16 TSSOP
16 Narrow SO
16 Wide SO
16 Plastic DIP
16 CERDIP
16 CERDIP
PIN-PACKAGE
CC
= +1V
1
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