BCD AZ809NSTR-G1 3-pin microprocessor reset circuit Datasheet

Data Sheet
3-PIN MICROPROCESSOR RESET CIRCUITS
AZ809/AZ810
General Description
Features
The AZ809/810 microprocessor supervisory circuits
can be used to monitor the power supplies in microprocessor and digital systems. They provide a reset to the
microprocessor in power-up, power-down and brownout conditions. The function of the AZ809/810 is to
monitor the VCC supply voltage, and assert a reset signal whenever this voltage declines below the factoryprogrammed reset threshold. The reset signal remains
asserted for 240ms after VCC rises above the threshold.
The AZ809 has an active-low RESET output, while
the AZ810 has an active-high RESET output. Seven
standard reset voltage options are available, suitable
for monitoring 3.0V, 3.3V and 5.0V supply voltages.
With a typical supply current of only 8μA when VCC is
3.3V, the AZ809/810 are ideal for use in portable
equipment.
·
·
·
·
·
Precise Monitoring of 3.0V, 3.3V and 5.0V Supply Voltages
Improved Maxim MAX809/MAX810 Replacement
140ms Min. Reset Pulse Width
Active-low Reset Output (AZ809)
Active-high Reset Output (AZ810)
No External Components
Specified Over Full Temperature Range: -40 to
105oC
Applications
·
·
·
·
·
These ICs are available in SOT-23 package.
Embedded Controllers
Battery Operated Systems
Intelligent Instruments
Wireless Communication Systems
PDAs and Handheld Equipment
SOT-23
Figure 1. Package Type of AZ809/810
Sep. 2012 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
1
Data Sheet
3-PIN MICROPROCESSOR RESET CIRCUITS
AZ809/AZ810
Pin Configuration
N Package
(SOT-23)
VCC
2
RESET/RESET
1
GND
3
Figure 2. Pin Configuration of AZ809/810 (Top View)
Pin Description
Pin Number
AZ809
AZ810
1
1
GND
Function
Ground pin
RESET
RESET is asserted LOW if VCC falls below the reset threshold and remains LOW for
the 240ms typical reset timeout period (140ms minimum) after VCC exceeds the
threshold
2
RESET
RESET is asserted HIGH if VCC falls below the reset threshold
3
VCC
2
3
Pin Name
Power supply input voltage (3.0V, 3.3V, 5.0V)
Sep. 2012 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
2
Data Sheet
AP2218
AZ809/AZ810
1A LOW DROPOUT LINEAR REGULATOR
3-PIN MICROPROCESSOR RESET CIRCUITS
Functional Block Diagram
VCC
GND
Reset
Logic
+
Timer
3
2
RESET/RESET
1
Oscillator
Reference
Voltage
Figure 3. Functional Block Diagram of AZ809/810
Ordering Information
AZ8XX
-
Circuit Type
E1: Lead Free
G1: Green
09: AZ809
10: AZ810
TR: Tape and Reel
Package
N: SOT-23
Detect Voltage:
L: 4.63V
S: 2.93V
R: 2.63V
T: 3.08V
Sep. 2012 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
3
Data Sheet
3-PIN MICROPROCESSOR RESET CIRCUITS
AZ809/AZ810
Ordering Information (Continued)
Package
Part Number
Temperature
Range
-40 to
105oC
SOT-23
oC
-40 to 105
Lead Free
Marking ID
Green
Lead Free
EC1
Green
GC1
Packing Type
AZ809NLTR-E1
AZ809NLTR-G1
Tape & Reel
AZ809NTTR-E1
AZ809NTTR-G1
EC4
GC4
Tape & Reel
AZ809NSTR-E1
AZ809NSTR-G1
EC5
GC5
Tape & Reel
AZ809NRTR-E1
AZ809NRTR-G1
EC6
GC6
Tape & Reel
AZ810NLTR-E1
AZ810NLTR-G1
ED1
GD1
Tape & Reel
AZ810NTTR-E1
AZ810NTTR-G1
ED4
GD4
Tape & Reel
AZ810NSTR-E1
AZ810NSTR-G1
ED5
GD5
Tape & Reel
AZ810NRTR-E1
AZ810NRTR-G1
ED6
GD6
Tape & Reel
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with
"G1" suffix are available in green packages.
Absolute Maximum Ratings (Note 1)
Parameter
Symbol
Value
Unit
VCC
-0.3 to 6
V
-0.3 to VCC+0.3
V
Input Current, VCC Pin
20
mA
Output Current, RESET, RESET Pin
20
mA
Rate of Rise, VCC
100
V/μs
Continuous Power Dissipation
320
mW
Supply Voltage
RESET, RESET
Junction Temperature
TJ
125
oC
Storage Temperature
TSTG
-65 to 150
oC
TLEAD
300
oC
Lead Temperature (Soldering, 10sec)
Note 1: Stresses greater than 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 under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter
Operating Junction Temperature Range
Symbol
Min
Max
Unit
TJ
-40
105
oC
Sep. 2012 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
4
Data Sheet
AP2218
AZ809/AZ810
1A LOW DROPOUT LINEAR REGULATOR
3-PIN MICROPROCESSOR RESET CIRCUITS
Electrical Characteristics
(TA=-40oC to 105oC, Typical values at TA=25oC, VCC=5V for L devices, VCC=3.3V for T/S devices and VCC=3V
for R devices, unless otherwise specified.)
Parameter
Input Voltage (VCC) Range
Symbol
VCC
Conditions
Min
TA=0oC to 70oC
o
o
TA=-40 C to 105 C
Supply Current
ICC
VTH
1.1
5.5
1.2
5.5
11
20
TA=-40oC to 85oC, VCC<3.6V,
R/S/T
8
16
25
TA=85oC to 105oC, VCC<3.6V,
R/S/T
20
T Devices
T: 3.08V
R Devices
R: 2.63V
TA=25oC
4.56
TA=-40oC to 85oC
TA=85oC to 105oC
TA=25oC
TA=-40oC to 85oC
TA=85oC to 105oC
TA=25oC
TA=-40oC to 85oC
TA=85oC to 105oC
TA=25oC
TA=-40oC to 85oC
TA=85oC to 105oC
4.50
Detect Voltage Temperature
Coefficient
VCC=VTH to VTH-100mV
Sep. 2012 Rev. 1. 3
Unit
V
μA
TA=85oC to 105oC, VCC<5.5V,
L
S Devices
S: 2.93V
VCC to Reset Delay
Max
TA=-40oC to 85oC, VCC<5.5V,
L
L Devices
L: 4.63V
Detect Voltage
Typ
4.63
4.75
4.40
3.04
4.70
4.86
3.08
3.11
3.00
3.15
2.92
3.23
2.89
2.93
2.85
2.96
3.00
2.78
2.59
V
3.08
2.63
2.66
2.55
2.70
2.50
2.76
±0.003
%/oC
20
μs
BCD Semiconductor Manufacturing Limited
5
Data Sheet
3-PIN MICROPROCESSOR RESET CIRCUITS
AZ809/AZ810
Electrical Characteristics (Continued)
(TA=-40oC to 105oC, Typical values at TA=25oC, VCC=5V for L devices, VCC=3.3V for T/S devices and VCC=3V
for R devices, unless otherwise specified.)
Parameter
Symbol
Reset Active Timeout Period
Low RESET Output Voltage
(AZ809)
VOL
High RESET Output Voltage
(AZ809)
Low RESET Output Voltage
(AZ810)
High RESET Output Voltage
(AZ810)
VOL
VOH
Conditions
Min
Typ
Max
Unit
TA=-40oC to 85oC
140
240
560
ms
TA=85oC to 105oC
100
840
VCC=VTH min, ISINK=1.2mA,
AZ809R/S/T
0.3
VCC=VTH min, ISINK=3.2mA,
AZ809L
0.4
VCC>1.1V, ISINK=50μA
0.3
VCC>VTH max, ISOURCE=500μA,
AZ809R/S/T
0.8VCC
VCC>VTH max, ISOURCE=800μA,
AZ809L
VCC-1.5
V
VCC=VTH max, ISINK=1.2mA,
AZ810R/S/T
0.3
VCC=VTH max, ISINK=3.2mA,
AZ810L
0.4
1.8V<VCC<VTH min,
ISOURCE=150μA
Sep. 2012 Rev. 1. 3
0.8VCC
V
V
V
BCD Semiconductor Manufacturing Limited
6
Data Sheet
3-PIN MICROPROCESSOR RESET CIRCUITS
AZ809/AZ810
Operating Diagram
VCC
5V
VTH
Active Reset
Timeout Period
0V
RESET
20μs
typical
5V
240ms
typical
AZ809
0V
5V
RESET
AZ810
0V
Note: The reset signal is asserted LOW for the AZ809 and HIGH for the AZ810 when the VCC signal falls below
the threshold trip voltage and remains asserted for 240ms typical after the VCC has risen above the threshold.
Figure 4. Reset Timing Diagram of AZ809/810
Typical Application
VCC
VCC
AZ809
(AZ810)
VCC
RESET
INPUT
RESET
(RESET)
GND
GND
Figure 5. Typical Application of AZ809/810
Sep. 2012 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
7
Data Sheet
3-PIN MICROPROCESSOR RESET CIRCUITS
AZ809/AZ810
Mechanical Dimensions
SOT-23
3.0 °
7.0°
R0.100(0.004)
0.900(0.035)
1.100(0.043)
7.0°
0.0°~10.0°
0.020(0.001)
0.100(0.004) 0.200(0.008)MIN
2.800(0.110)
3.000(0.118)
0.550(0.022)REF
0.080(0.003)
0.150(0.006)
1.200(0.047)
1.400(0.055)
2.300(0.091)
2.500(0.098)
0.920(0.036)
0.980(0.039)
0.100(0.004) GAUGE PLANE
4×R0.100(0.004)
0.500(0.020)
0.700(0.028)
2.0°
1.050(0.041)REF
Unit: mm(inch)
0.390(0.015)
0.450(0.018)
1.900(0.075)REF
Sep. 2012 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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