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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX693A Datasheet

Microprocessor Supervisory Circuits

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MAX691A/MAX693A/
MAX800L/MAX800M
Microprocessor Supervisory Circuits
General Description
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 protection
of CMOS RAM or EEPROM, separate watchdog out-
puts, backup-battery switchover, and a RESET output
that is valid with VCC down to 1V. The MAX691A/
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
Computers
Controllers
Intelligent Instruments
Critical μP Power Monitoring
Typical Operating Circuit
5V
+8V REGULATOR
0.1µF
1N4148
0.47F*
35
VCC BATT ON VOUT 2
1 VBATT
CE OUT 12
NO
CONNECTION
CMOS RAM
MAX691A
9
PFI
MAX693A
MAX800L
CE
IN
13
4
MAX800M
GND
11
WDI
7 OSC IN
PFO 10
8 OSC SEL
RESET 15
LOW LINE WDO
ADDRESS
DECODE
A0-A15
I/O
µP
NMI
RESET
6 14
AUDIBLE
ALARM
*MaxCap
SYSTEM STATUS INDICATORS
MaxCap is a registered trademark of Kanthal Globar, Inc.
Features
200ms Power-OK/Reset Timeout Period
1μA Standby Current, 30μA Operating Current
On-Board Gating of Chip-Enable Signals, 10ns max
Delay
MaxCap® or SuperCap Compatible
Guaranteed RESET Assertion to VCC = +1V
Voltage Monitor for Power-Fail or Low-Battery
Warning
Power-Fail Accuracy Guaranteed to ±2%
(MAX800L/M)
Available in 16-Pin Narrow SO, Plastic DIP, and
TSSOP Packages
Ordering Information
PART
MAX691ACUE
MAX691ACSE
MAX691ACWE
MAX691ACPE
MAX691AC/D
MAX691AEUE
MAX691AESE
MAX691AEWE
MAX691AEPE
TEMP RANGE
-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
-0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
16 TSSOP
16 Narrow SO
16 Wide SO
16 Plastic DIP
Dice*
16 TSSOP
16 Narrow SO
16 Wide SO
16 Plastic DIP
Ordering Information continued at end of data sheet.
*Dice are specified at TA = +25°C, DC parameters only.
Devices in PDIP, SO, and TSSOP packages are available in
both leaded and lead-free packaging. Specify lead free by add-
ing the + symbol at the end of the part number when ordering.
Lead free not available for CERDIP package.
Pin Configuration
TOP VIEW
VBATT 1
VOUT 2
VCC 3
GND 4
BATT ON 5
LOW LINE 6
OSC IN 7
OSC SEL 8
MAX691A
MAX693A
MAX800L
MAX800M
16 RESET
15 RESET
14 WDO
13 CE IN
12 CE OUT
11 WDI
10 PFO
9 PFI
DIP/SO/TSSOP
19-0094; Rev 14; 4/18


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX693A Datasheet

Microprocessor Supervisory Circuits

No Preview Available !

MAX691A/MAX693A/
MAX800L/MAX800M
Microprocessor Supervisory Circuits
Absolute Maximum Ratings
Terminal Voltage (with respect to GND)
VCC......................................................................-0.3V to +6V
VVBATT.................................................................-0.3V to +6V
All Other Inputs....................................-0.3V to (VOUT + 0.3V)
Input Current
VCC Peak..........................................................................1.0A
VCC Continuous............................................................250mA
VBATT Peak..................................................................250mA
VBATT Continuous..........................................................25mA
GND, BATT ON.............................................................100mA
All Other Outputs ............................................................25mA
Continuous Power Dissipation (TA = +70°C)
TSSOP (derate 6.70mW/°C above +70°C)..................533mW
Narrow SO (derate 8.70mW/°C above +70°C) ...........696mW
Wide SO (derate 9.52mW/°C above +70°C)...............762mW
Plastic DIP (derate 10.53mW/°C above +70°C) ..........842mW
CERDIP (derate 10.00mW/°C above +70°C)..............800mW
Operating Temperature Ranges
MAX69_AC_ _/MAX800_C_ _............................0°C to +70°C
MAX69_AE_ _/MAX800_E_ _.........................-40°C to +85°C
MAX69_AMJE................................................-55°C to +125°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Electrical Characteristics
(MAX691A, MAX800L: VCC = +4.75V to +5.5V; MAX693A, MAX800M: VCC = +4.5V to +5.5V; VVBATT = 2.8V, TA = TMIN to TMAX,
unless otherwise noted.
PARAMETER
Operating Voltage Range,
VCC, VVBATT (Note 1)
VOUT Output
VCC = 4.5V
CONDITIONS
MIN TYP
0
IOUT = 25mA
IOUT = 250mA
IOUT = 210mA
MAX69_AC
MAX69_AE,
MAX800_C/E
MAX69_A/M
MAX69_AC/AE,
MAX800_C/E
VCC - 0.05 VCC - 0.02
VCC - 0.3 VCC - 0.2
VCC -
0.35
VCC - 0.2
VCC - 0.40
VCC -
0.3V
VCC -
0.17
MAX
5.5
UNITS
V
V
MAX69_AC, MAX800_C
0.8 1.2
VCC-to-VOUT On-Resistance VCC = 4.5V
MAX69_AE, MAX800_E
MAX69_A/M
0.8 1.4 Ω
0.8 1.6
VOUT in Battery-Backup
Mode
VBATT-to-VOUT
On-Resistance
Supply Current in Normal
Operating Mode (excludes
IOUT)
Supply Current in Battery-
Backup Mode (excludes
IOUT) (Note 2)
VBATT Standby Current
(Note 3)
Battery Switchover
Threshold
VVBATT = 4.5V, IOUT = 20mA
VVBATT = 2.8V, IOUT = 10mA
VVBATT = 2.0V, IOUT = 5mA
VVBATT = 4.5V
VVBATT = 2.8V
VVBATT = 2.0V
VCC > VVBATT - 1V
VCC < VVBATT -
1.2V, VVBATT =
2.8V
VVBATT + 0.2V ≤
VCC
Power-up
Power-down
TA = +25°C
TA = TMIN + TMIN
TA = +25°C
TA = TMIN + TMIN
VVBATT - 0.3
VVBATT - 0.25
VVBATT - 0.15
15
25
30
30 100
0.04
1
5
-0.1 0.02
-1.0 0.02
VVBATT + 0.3
VVBATT - 0.3
V
Ω
µA
µA
µA
V
www.maximintegrated.com
Maxim Integrated │2


Part Number MAX693A
Description Microprocessor Supervisory Circuits
Maker Maxim
Total Page 17 Pages
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