APR3101/2/3
MicroPower Microprocessor Reset Circuit with Manual Reset
Features
•
•
•
•
•
•
•
1.2V to 6V Input Voltage Range
Low Quiescent Current : less Than 1.5
µA
High accuracy detection threshold : ±1.5%
Fixed trimmed reset thresholds for 1.5V, 1.75V,
2.32V, 2.63V, 2.93V, 3.08V, 3.9V, 4.38V.
Manual Reset Input
Reset Timeout Period 250ms
Available output configurations
- Open-drain output
- CMOS active high output
- CMOS active low output
•
•
SOT-23-5 package
No external components
General Description
The APR3101/2/3 are designed to monitor voltage
supplies in
µP
and digital systems. The quiescent
current is extremely low, typically 1.5
µA,
making it
ideal for portable battery operated equipment. The
APR3101/2/3 operate by monitoring the system power
supply voltage. When the input voltage drops below a
fixed threshold or whenever manual reset is asserted,
the device asserts a reset signal for a fixed time pe-
riod after Vcc rises above the fixed threshold or manual
reset is deasserted. The APR3101/2/3 series is avail-
able with three output stage versions:APR3101 push-
pull active low output, APR3102 push-pull active high
output and APR3103 open drain active low output. The
APR3101/2/3 also have a debounced manual reset
Applications
•
•
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•
Computers
Cell Phones
Portable Electronics
µP
Power Supply Monitoring
input that is provided to override the reset monitor.
They are also designed to reject fast line transient
glitches on Vcc. The APR3101/2/3 are come in a
miniature SOT-23-5 package.
Pin Configuration
V
CC
MR
5
1
2
4
3
GND NC Reset (3101/3)
Reset (3102)
SOT-23-5 (Top View)
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.
Copyright
ANPEC Electronics Corp.
Rev. A.3 - Feb., 2004
1
www.anpec.com.tw
APR3101/2/3
Ordering and Marking Information
APR3101/2/3 -
Lead Free Code
°
Handling Code
Temp. Range
Package Code
Voltage Code
Package Code
B : SOT-23-5
Temp. Range
I : -40 to 85
°
C
Handling Code
TR : Tape & Reel
Voltage Code :
15 : 1.5V ~ 50 : 5.0V
Lead Free Code
L : Lead Free Device
Blank : Original Device
APR3101/2/3 B : A1/2/3 X X
Date Code
Voltage Code A:1.5V B:1.75V C:2.32V D:2.63V E:2.93V F:3.08V G:3.9V H:4.38V
Absolute Maximum Ratings
Symbol
V
CC
V
RESET
I
CC
, I
MR
I
RESET
dVcc/dt
T
J
T
L
R
TH,JA
P
D
TSTG
V
CC
to GND
RESET to GND (Push-Pull Output)
RESET to GND (Open Drain Output)
Maximum Continuous Input Current
RESET/RESET Current
Rate of Rise of V
CC
Junction Temperature Range
Lead Temperature (Soldering, 10 second)
Thermal Resistance – Junction to Ambient
Power Dissipation
Storage Temperature Range
Parameter
Value
-0.3 to 6
-0.3 to V
CC
+0.3
-0.3 to 6
20
20
100
-40 to 150
260
357
Internally Limited
-65 to +150
Unit
V
V
mA
mA
V/µs
°C
°C
°C/W
W
°C
Pin Function Descrpition
No.
1
2
PIN
Name
GND
NC
RESET
(APR3101/3)
RESET
(APR3102)
Description
Ground connection
No internal connection
RESET output remains low while V
CC
is below the reset threshold and remains
so for a fixed time period after V
CC
raises above the reset threshold.
RESET output remains high while V
CC
is below the reset threshold and remains
so for a fixed time period after V
CC
raises above the reset threshold.
3
Manual Reset active low input. A logic low signal on MR asserts a reset
4
MR
condition. Asserted reset continues as long as MR is low and for a fixed time
period after MR returns high.
5
V
CC
Supply Voltage (+1.2V to +6V)
Note: The pin sequence here might not be correct for all different package types, and please refer pin
configuration in page1 for correct pin assignment.
Copyright
ANPEC Electronics Corp.
Rev. A.3 - Feb., 2004
2
www.anpec.com.tw
APR3101/2/3
Block Diagram
MR
V
c c
Reset
Generator
+ Timer
RESET
Oscillator
V
REF
GND
APR3101
MR
V
c c
Reset
Generator
+ Timer
RESET
Oscillator
V
REF
GND
APR3102
MR
RESET
V
c c
Reset
Generator
+ Timer
Oscillator
V
REF
GND
APR3103
3
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Copyright
ANPEC Electronics Corp.
Rev. A.3 - Feb., 2004
APR3101/2/3
Part Number Description
Part Number
APR3101
APR3102
APR3103
Part Description
Reset Output Push Pull Active Low with Delay
Reset Output Push Pull Active High with Delay
Reset Output Open Drain Active Low with Delay
Electrical Characteristics
V
IN
= 5V, T
A
= -40 to 85°C unless otherwise noted. Typical values are at T
A
=25°C, V
CC
= 5V for 4.38V
versions, V
CC
= 3.3V for 3.08/2.93V versions, V
CC
= 3.0V for 2.63V. versions and V
CC
= 2.5V for 2.32V
versions, V
CC
= 2.0V for 1.75V versions , V
CC
= 1.8V for 1.5V versions.
APR3101/2/3
Symbol
Parameter
Test Conditions
Unit
Min.
Typ.
Max.
V
CC
1.2
6
Supply Voltage
V
I
CC
Supply Current
V
CC
=1.5V~6V
1.5
4
µA
T
A
=-40 to 85°C
3
5
T
A
=25°C
±1.5%
V
TH
Reset Threshold
T
A
=-40 to 85°C
±2%
V
HYST
Hysteresis Range
20
mV
Reset Timeout Period
ms
T
RTP
150
250
350
V
OL
Reset Output Low
I
SINK
=1.2mA
0.5
V
V
OH
Reset Output High
I
SOURCE
=0.6mA
0.8*V
CC
T
D
V
CC
to Reset Delay
V
CC
=V
TH
to (V
TH
-100mV)
25
µS
I
LE
Reset Output Leakage
0.5
µA
T
MPW
MR Minimum Pulse Width
10
µS
T
MRD
MR to Reset Delay
0.5
µS
V
MIL
MR Input Low Threshold
0.4* V
CC
V
V
MIH
MR Input High Threshold
0.5* V
CC
R
MR
30
47
70
MR Pull-Up resistance
KΩ
Application Circuit
V
CC
V
CC
V
CC
100k
V
CC
V
CC
V
CC
APR3103 RESET
RESET
µ
P
INPUT
APR3101 RESET
APR3102 (RESET)
RESET
µ
P
INPUT
GND
GND
GND
GND
Copyright
ANPEC Electronics Corp.
Rev. A.3 - Feb., 2004
4
www.anpec.com.tw
APR3101/2/3
Timing Chart
Reset Threshold
Reset Threshold
Vcc
(APR3102)
RESET
Reset Timeout Period 250ms
Vcc to Reset Delay 25us
(APR3101/3)
RESET
MR to Reset Delay 0.5us
Reset Timeout Period 250ms
MR
Copyright
ANPEC Electronics Corp.
Rev. A.3 - Feb., 2004
5
www.anpec.com.tw
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