®
SP691A/693A/800L/800M
Low Power Microprocessor Supervisory
with Battery Switch-Over
s
Precision 4.65V/4.40V Voltage Monitoring
s
200ms Or Adjustable Reset Time
s
100ms, 1.6s Or Adjustable Watchdog Time
s
60µA Maximum Operating Supply Current
s
1.0µA Maximum Battery Backup Current
s
0.1µA Maximum Battery Standby Current
s
Power Switching
250mA Output in Vcc Mode (0.6Ω)
25mA Output in Battery Mode (5Ω)
s
On-Board Gating of Chip-Enable Signals
Memory Write-Cycle Completion
6ns CE Gate Propagation Delay
s
Voltage Monitor for Power-Fail or Low Battery
s
Backup-Battery Monitor
s
RESET Valid to Vcc=1V
s
1% Accuracy Guaranteed (SP800L/800M)
s
Pin Compatible Upgrade to MAX691A/693A/
800L/800M
DESCRIPTION
The
SP691A/693A/800L/800M
is a microprocessor (µP) supervisory circuit that integrates
a myriad of components involved in discrete solutions to monitor power-supply and
battery-control functions in
µP
and digital systems. The
SP691A/693A/800L/800M
offers
complete
µP
monitoring and watchdog functions. The
SP691A/693A/800L/800M
is ideal for
a low-cost battery management solution and is well suited for portable, battery-powered
applications with its supply current of 35µA. The 6ns chip-enable propagation delay,
the 25mA current output in battery-backup mode, and the 250mA current output in
standard operation also makes the
SP691A/693A/800L/800M
suitable for larger scale,
high-performance equipment.
Part Number
SP691A
SP693A
SP800L
SP800M
RESET Threshold
4.65V
4.40V
4.65V
4.40V
RESET Accuracy
+125mV
+125mV
+50mV
+50mV
PFI Accuracy
+ 4%
+ 4%
+ 1%
+ 1%
Backup-Battery Switch
YES
YES
YES
YES
SP691A DS/04
SP691A/693A/800L/800M Low Power Microprocessor Supervisor with Battery Switch-Over
© Copyright 2000 Sipex Corporation
1
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation
of the device at these ratings or any other above those
indicated in the operation sections of the specifications
below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may
affect reliability.
Terminal Voltages (with respect to GND)
V
CC
.......................................................................................-0.3V to +6V
V
BATT
.....................................................................................-0.3V to +6V
All Other Inputs........................................................-0.3V to (V
CC
+0.3V)
Input Currents
V
CC
Peak...........................................................................................1.0A
V
CC
Continuous.............................................................................250mA
V
BATT
Peak....................................................................................250mA
V
BATT
Continuous............................................................................25mA
GND, BATT ON............................................................................100mA
All Other Inputs..............................................................................25mA
Enhanced ESD Specifications........................+4kV Human Body Model
Power Dissipation Per Package
16-pin PDIP (derate 14.3mW/
O
C above +70
O
C).......................1150mW
16-pin Narrow SOIC (derate 13.6mW/
O
C above 70
O
C)............1090mW
16-pin Wide SOIC (derate 11.2mW/
O
C above 70
O
C).................900mW
Storage Temperature....................................................-65
O
C to +150
O
C
Lead Temperature (soldering,10 sec).........................................+300
O
C
SPECIFICATIONS
V
CC
= +4.75V to +5.5V for the
SP691A/800L,
V
CC
= +4.5V to +5.5V for the
SP693A/800M,
V
BATT
= +2.8V, and T
AMB
= T
MIN
to T
MAX
unless otherwise
noted. Typical values apply at T
AMB
=+25
O
C.
PARAMETERS
Operating Voltage Range,
V
CC
or V
BATT
, NOTE 1
Output Voltage, V
OUT
in Normal Operating Mode
MIN.
0
V
CC
-0.05
V
CC
-0.3
V
CC
-0.2
TYP.
MAX.
5.5
UNITS
V
CONDITIONS
V
CC
-0.015
V
CC
-0.15
V
CC
-0.09
0.6
0.9
1.2
2.0
V
V
CC
=4.5V, I
OUT
=25mA
V
CC
=4.5V, I
OUT
=250mA
V
CC
=3.0V, V
BATT
=2.8V, I
OUT
=100mA
V
CC
=4.5V
V
CC
=3.0V
V
BATT
=4.5V, I
OUT
=20mA
V
BATT
=2.8V, I
OUT
=10mA
V
BATT
=2.0V, I
OUT
=5mA
V
CC
-to-V
OUT
On-Resistance
V
OUT
in Battery-Backup Mode
V
BATT
-0.3
V
BATT
-0.25
V
BATT
-0.15
Ω
V
BATT
-0.1
V
BATT
-0.07
V
BATT
-0.05
5
7
10
15
25
30
60
V
V
BATT
-to-V
OUT
On-Resistance
V
BATT
=4.5V
Ω
V
BATT
=2.8V
V
BATT
=2.0V
V
CC
>(V
BATT
-1V), excluding I
OUT
V
CC
<(V
BATT
-1.2V), V
BATT
=2.8V, excluding I
OUT
V
CC
>(V
BATT
+0.2V), excluding I
OUT
power-up
power-down
Peak to Peak
Supply Current in Normal
Operating Mode, I
Vcc
Supply Current in Battery-
Backup Mode, I
BATT
, NOTE 2
V
BATT
Standby Current, I
BATT
,
NOTE 3
Battery Switchover Threshold
-0.1
35
µA
µA
µA
0.001
1.0
0.02
V
BATT
+0.03
V
BATT
-0.03
60
V
mV
Battery Switchover Hysteresis
SP691A DS/04
SP691A/693A/800L/800M Low Power Microprocessor Supervisor with Battery Switch-Over
© Copyright 2000 Sipex Corporation
2
SPECIFICATIONS (continued)
V
CC
= +4.75V to +5.5V for the
SP691A/800L,
V
CC
= +4.5V to +5.5V for the
SP693A/800M,
V
BATT
= +2.8V, and T
AMB
= T
MIN
to T
MAX
unless otherwise
noted. Typical values apply at T
AMB
=+25
O
C.
PARAMETERS
BATT ON Output Low
Voltage
BATT ON Output Short
Circuit Current
MIN.
TYP.
0.1
0.7
60
15
MAX.
0.4
1.5
100
UNITS CONDITIONS
V
mA
µA
I
SINK
=3.2mA
I
SINK
=25mA
sink current
source current
1
RESET, LOWLINE, AND WATCHDOG TIMER
Reset Threshold Voltage
4.50
4.25
4.60
4.35
Reset Threshold Hysteresis
V
CC
to RESET Delay
LOWLINE to RESET Delay
Reset Active Timeout Period
for the Internal Oscillator
Reset Active Timeout Period
for the External Clock,
NOTE 4
Watchdog Timeout Period for
the Internal Oscillator
Watchdog Timeout Period for
the External Clock, NOTE 4
Minimum Watchdog Input
Pulse Width
RESET Output Voltage
3.5
RESET Output Short-Circuit
Current
RESET Output Voltage Low,
NOTE 5
LOWLINE Output Voltage
3.5
LOWLINE Output Short
Circuit Current
WDO Output Voltage
3.5
WDO Output Short-Circuit
Current
SP691A DS/04
4.65
4.40
4.65
4.40
15
80
800
4.75
4.50
4.70
4.45
V
SP691A
SP693A
SP800L
SP800M
mV
µs
ns
center-to-peak
power down
power down
power-up
140
200
280
ms
clock
cycles
2048
1.0
70
1.6
100
4096
1024
100
0.004
0.1
0.3
0.4
2.25
140
power-up
long period
short period
long period
short period
V
IL
=0.8V,V
IH
=0.75xV
CC
I
SINK
=50
µ
A, V
CC
=1V, V
CC
falling
I
SINK
=3.2mA, V
CC
=4.25V
I
SOURCE
=1.6mA, V
CC
=5V
output source current
I
SINK
=3.2mA
I
SINK
=3.2mA, V
CC
=4.25V
I
SOURCE
=1
µ
A, V
CC
=5V
output source current
I
SINK
=3.2mA
I
SOURCE
=500
µ
A, V
CC
=5V
output source current
© Copyright 2000 Sipex Corporation
sec
ms
clock
cycles
ns
V
7
0.1
0.1
20
0.4
0.4
mA
V
V
µA
V
mA
15
0.1
100
0.4
3
10
SP691A/693A/800L/800M Low Power Microprocessor Supervisor with Battery Switch-Over
3
SPECIFICATIONS (continued)
V
CC
= +4.75V to +5.5V for the
SP691A/800L,
V
CC
= +4.5V to +5.5V for the
SP693A/800M,
V
BATT
= +2.8V, and T
AMB
= T
MIN
to T
MAX
unless otherwise
noted. Typical values apply at T
AMB
=+25
O
C.
PARAMETERS
WDI Threshold Voltage,
NOTE 6
WDI Input Current
MIN.
0.75xV
CC
TYP.
MAX.
UNITS
V
µA
CONDITIONS
V
IH
V
IL
WDI=0V
WDI=V
OUT
0.8
-50
-10
20
50
POWER-FAIL COMPARATOR
PFI Input Threshold
1.200
1.237
1.225
1.25
1.25
+0.01
0.1
3.5
PFO Short Circuit Current
1
PFI-to-PFO Delay
60
15
25
60
1.300
1.263
1.275
+25
0.4
V
nA
V
mA
µA
µs
I
SINK
=3.2mA
I
SOURCE
=1
µ
A, V
CC
=5V
output sink current
output source current
V
OD
=15mV
V
OD
=15mV
SP691A/693A
, V
CC
=5V
SP800L/800M
, V
CC
=5V
PFI Leakage Current
PFO Output Voltage
100
CHIP-ENABLE GATING
CE
IN
Leakage Current
CE
IN
to CE
OUT
Resistance,
NOTE 7
CE
OUT
Short-Circuit Current
(RESET Active)
CE
IN
to CE
OUT
Propagation
Delay, NOTE 8
CE
OUT
Output Voltage High
(RESET Active)
RESET to CE
OUT
Delay
INTERNAL OSCILLATOR
OSC
IN
Leakage Current
OSC
IN
Input Pull-Up Current
OSC
SEL
Input Pull-Up Current
OSC
IN
Frequency Range
OSC
IN
External Oscillator
Threshold Voltage
OSC
IN
Frequency with
External Capacitor
V
OUT
-0.3
0.10
10
10
200
V
OUT
-0.6
3.65
2
+5.0
100
100
µA
µA
µA
kHz
V
OSC
SEL
=0V
OSC
SEL
=V
OUT
or floating, OSC
IN
=0V
OSC
SEL
=0V
OSC
SEL
=0V
V
IH
V
IL
OSC
SEL
=0V, C
OSC
=47pF
3.5
2.7
12
0.1
+0.005
65
+1
150
µA
Ω
mA
disable mode
enable mode
0.75
2.0
disable mode, CE
OUT
=0V
50
Ω
source impedance driver, C
LOAD
=50pF
V
CC
=5V, I
OUT
= 100
µA
V
CC
=0V, V
BATT
=2.8V, I
OUT
=1
µA
power-down
6
10
ns
V
µs
2.0
kHz
SP691A DS/04
SP691A/693A/800L/800M Low Power Microprocessor Supervisor with Battery Switch-Over
© Copyright 2000 Sipex Corporation
4
SPECIFICATIONS (continued)
V
CC
= +4.75V to +5.5V for the
SP691A/800L,
V
CC
= +4.5V to +5.5V for the
SP693A/800M,
V
BATT
= +2.8V, and T
AMB
= T
MIN
to T
MAX
unless otherwise
noted. Typical values apply at T
AMB
=+25
O
C.
NOTE 1: Either V
CC
or V
BATT
can go to 0V, if the other is greater than 2.0V.
NOTE 2: The supply current drawn by the
SP691A/693A/800L/800M
from the battery (excluding I
OUT
) typically
goes to 5µA when (V
BATT
- 1V) < V
CC
< V
BATT
. In most applications, this is a brief period as V
CC
falls through this region.
NOTE 3: "+" = battery-discharging current, "-" = battery-charging current.
NOTE 4: Although presented as typical values, the number of clock cycles for the reset and watchdog timeout
periods are fixed and do not vary with process or temperature.
NOTE 5: RESET is an open-drain output and sinks current only.
NOTE 6: WDI is internally connected to a voltage divider between V
OUT
and GND. If unconnected, WDI is driven
to 1.6V (typ), disabling the watchdog function.
NOTE 7: The chip-enable resistance is tested with V
CC
= +4.75V for the
SP691A/800L
and V
CC
= +4.5V for the
SP693A/800M.
CE
IN
= CE
OUT
= V
CC
/2.
NOTE 8: The chip-enable propagation delay is measured from the 50% point at CE
IN
to the 50% point at CE
OUT
.
TYPICAL PERFORMANCE CHARACTERISTICS
(T
AMB
= 25
o
C, unless otherwise noted)
2.5
43
40
V
CC
Current (µA)
37
34
31
28
25
-60
V
CC
= 5V
V
BATT
= 2.8V
V
BATT
Current (µA)
2.0
1.5
1.0
0.5
0.0
-0.5
-30
0
30
60
90
Temperature (
o
C)
120
-60
-30
0
30
60
90
o
Temperature ( C)
120
150
V
CC
= 1.6V
V
BATT
= 2.8V
Figure 1. V
CC
Supply Current vs. Temperature (Normal
Operating Mode)
Figure 2. Battery Supply Current vs. Temperature
(Battery-Backup Mode)
75.0
CE-IN Resistance (Ω)
70.0
65.0
60.0
55.0
50.0
45.0
40.0
-80 -60 -40 -20
0 20 40 60 80 100 120 140
Temperature (
o
C)
V
CC
= 4.75V
V
BATT
= 2.8V
CE IN = V
CC
/2
14
12
10
Resistance (Ω)
8
6
4
2
0
-60
-30
0
V
BATT
= 2V
V
BATT
= 2.8V
V
BATT
= 4.5V
30
60
90
o
Temperature ( C)
120
150
V
CC
= 0V
Figure 3. Chip-Enable On-Resistance vs. Temperature
SP691A DS/04
Figure 4. V
BATT
to V
OUT
On-Resistance vs. Temperature
© Copyright 2000 Sipex Corporation
SP691A/693A/800L/800M Low Power Microprocessor Supervisor with Battery Switch-Over
5
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