GMT G696LXXXT1U Microprocessor reset ic Datasheet

G696/G697
Global Mixed-mode Technology Inc.
Microprocessor Reset IC
Features
General Description
„
The G696/G697 are microprocessor (µP) supervisory
circuits used to monitor the power supplies in µP and
digital systems. They provide excellent circuit reliability
and low cost and adjustments when used with +5V,
+3.3V, +3.0V- powered circuits.
Precision Monitoring of +3V, +3.3V, and +5V
Power-Supply Voltages
„ Fully Specified Over Temperature
„ Available in Three Output Configurations
„
„
„
„
„
„
Push-Pull RESET Output (G696L)
Push-Pull RESET Output (G696H)
Open-Drain RESET Output (G697L)
Externally Programmable Time Delay Generator
14µA Supply Current
Guaranteed Reset Valid to VCC = 0.8V
Power Supply Transient Immunity
5 pin SOT-23-5 or TSOT-23-5 Packages
2% Threshold Accuracy
These circuits perform a single function: they assert a
reset signal whenever the VCC supply voltage declines
below a preset threshold, with hysteresis keeping it
asserted for time delay determined by externally programmable time delay generator after VCC has risen
above the reset threshold. Reset thresholds suitable
for operation with a variety of supply voltages are
available.
The G697L has an open-drain output stage, while the
G696 have push-pull outputs. The G697L’s open-drain
RESET output requires a pull-up resistor that can be
connected to a voltage higher than VCC. The G696L
have an active-low RESET output, while the G696H
has an active-high RESET output. The reset comparator is designed to ignore fast transients on VCC,
and the outputs are guaranteed to be in the correct
logic state for VCC down to 0.8V.
Applications
„ Computers
„ Controllers
„ Intelligent Instruments
„ Critical µP and µC Power Monitoring
„ Portable / Battery-Powered Equipment
„ Automotive
Low supply current makes the G696/G697 ideal for
use in portable equipment. The G696/G697 are available in 5-pin SOT23-5 or TSOT-23-5 packages.
Pin Configuration
Typical Application Circuit
VCC
RESET
(RESET)
1
5
CD
VCC
VCC
Rpull-up*
VCC
2
G696/G697
G696/G697
CD
GND
3
4
NC
RESET
(RESET)
GND
µP
RESET
INPUT
GND
CD
SOT-23-5/TSOT-23-5
()is for G696H
*G697 ONLY
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.8
May 10, 2006
1
G696/G697
Global Mixed-mode Technology Inc.
Ordering Information
ORDER NUMBER
ORDER NUMBER
(Pb free)
TEMP. RANGE
PACKAGE
G696HxxxT1U
G696LxxxT1U
G696HxxxT1Uf
G696LxxxT1Uf
-40°C ~ +105°C
-40°C ~ +105°C
SOT-23-5
SOT-23-5
G697LxxxT1U
G696HxxxTOU
G697LxxxT1Uf
G696HxxxTOUf
-40°C ~ +105°C
-40°C ~ +105°C
SOT-23-5
TSOT-23-5
G696LxxxTOU
G697LxxxTOU
G696LxxxTOUf
G697LxxxTOUf
-40°C ~ +105°C
-40°C ~ +105°C
TSOT-23-5
TSOT-23-5
Note: T1: SOT-23-5 TO: TSOT-23-5
U: Tape & Reel
* xxx specifies the threshold voltage.
e.g. 263 denotes the 2.64V threshold voltage.
Selector Guide
ORDER
NUMBER
ORDER NUMBER
(Pb free)
RESET THRESHOLD (V)
OUTPUT TYPE
TOP MARK
G697L463T1U
G697L463T1Uf
4.60
Open-Drain RESET
697Gx
G697L438T1U
G697L438T1Uf
4.32
Open-Drain RESET
697Fx
G697L400T1U
G697L400T1Uf
3.96
Open-Drain RESET
697Ex
G697L330T1U
G697L330T1Uf
3.30
Open-Drain RESET
697Dx
G697L308T1U
G697L308T1Uf
3.10
Open-Drain RESET
697Cx
G697L293T1U
G697L293T1Uf
2.91
Open-Drain RESET
697Bx
G697L263T1U
G697L263T1Uf
2.64
Open-Drain RESET
697Ax
697Hx
G697L250T1U
G697L250T1Uf
2.50
Open-Drain RESET
G696H463T1U
G696H463T1Uf
4.60
Push-Pull RESET
696Lx
G696H438T1U
G696H400T1U
G696H330T1U
G696H438T1Uf
G696H400T1Uf
G696H330T1Uf
4.32
3.96
3.30
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
696Kx
696Jx
696Nx
G696H308T1U
G696H293T1U
G696H308T1Uf
G696H293T1Uf
3.10
2.91
Push-Pull RESET
Push-Pull RESET
696Ix
696Hx
G696H263T1U
G696H250T1U
G696H263T1Uf
G696H250T1Uf
2.64
2.50
Push-Pull RESET
Push-Pull RESET
696Gx
696Qx
G696L463T1U
G696L463T1Uf
4.60
Push-Pull RESET
696Fx
G696L438T1U
G696L438T1Uf
4.32
Push-Pull RESET
696Ex
G696L400T1U
G696L400T1Uf
3.96
Push-Pull RESET
696Dx
G696L330T1U
G696L330T1Uf
3.30
Push-Pull RESET
696Mx
G696L308T1U
G696L308T1Uf
3.10
Push-Pull RESET
696Cx
G696L293T1U
G696L293T1Uf
2.91
Push-Pull RESET
696Bx
G696L263T1U
G696L263T1Uf
2.64
Push-Pull RESET
696Ax
G696L250T1U
G696L250T1Uf
2.50
Push-Pull RESET
696Px
T1: SOT-23-5
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.8
May 10, 2006
2
Global Mixed-mode Technology Inc.
G696/G697
Selector Guide
ORDER
NUMBER
ORDER NUMBER
(Pb free)
RESET THRESHOLD (V)
OUTPUT TYPE
TOP MARK
G697L463TOU
G697L463TOUf
4.60
Open-Drain RESET
697Gx
G697L438TOU
G697L438TOUf
4.32
Open-Drain RESET
697Fx
G697L400TOU
G697L400TOUf
3.96
Open-Drain RESET
697Ex
G697L330TOU
G697L330TOUf
3.30
Open-Drain RESET
697Dx
G697L308TOU
G697L308TOUf
3.10
Open-Drain RESET
697Cx
G697L293TOU
G697L293TOUf
2.91
Open-Drain RESET
697Bx
G697L263TOU
G697L263TOUf
2.64
Open-Drain RESET
697Ax
G697L250TOU
G697L250TOUf
2.50
Open-Drain RESET
697Hx
G696H463TOU
G696H438TOU
G696H400TOU
G696H330TOU
G696H463TOUf
G696H438TOUf
G696H400TOUf
G696H330TOUf
4.60
4.32
3.96
3.30
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
696Lx
696Kx
696Jx
696Nx
G696H308TOU
G696H293TOU
G696H263TOU
G696H308TOUf
G696H293TOUf
G696H263TOUf
3.10
2.91
2.64
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
696Ix
696Hx
696Gx
G696H250TOU
G696H250TOUf
2.50
Push-Pull RESET
696Qx
G696L463TOU
G696L463TOUf
4.60
Push-Pull RESET
696Fx
696Ex
G696L438TOU
G696L438TOUf
4.32
Push-Pull RESET
G696L400TOU
G696L400TOUf
3.96
Push-Pull RESET
696Dx
G696L330TOU
G696L330TOUf
3.30
Push-Pull RESET
696Mx
G696L308TOU
G696L308TOUf
3.10
Push-Pull RESET
696Cx
G696L293TOU
G696L293TOUf
2.91
Push-Pull RESET
696Bx
G696L263TOU
G696L263TOUf
2.64
Push-Pull RESET
696Ax
G696L250TOU
G696L250TOUf
2.50
Push-Pull RESET
696Px
TO: TSOT-23-5
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.8
May 10, 2006
3
Global Mixed-mode Technology Inc.
G696/G697
Absolute Maximum Ratings
Terminal Voltage (with respect to GND)
VCC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6.0V
Delay Capacitor Pin Voltage, VCD. . -0.3 to (VCC +0.3V)
RESET, RESET (push-pull) . . . . .-0.3V to (VCC + 0.3V)
Output Current, RESET, RESET . . . . . . . . . . . 20mA
Operating Temperature Range. . . . . .-40°C to +105°C
Storage Temperature Range . . . . . . .-65°C to +150°C
Reflow Temperature (soldering, 10sec) . . . .. . . 260°C
RESET (open drain). . . . . . . . . . . . . . . -0.3V to +6.0V
Input Current, VCC . . . . . . . . . . . . . . . . . . . . . . . 20mA
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
(VCC = full range, TA = -40°C to +105°C, unless otherwise noted. Typical values are at TA = +25°C, VCC = 5V
for 463/438/400/330 versions, VCC= 3.3V for 308/293 versions, and VCC = 3V for 263/250 version.) (Note 1)
PARAMETER
SYMBOL
VCC Range
Supply Current (SOT-23-5)
Reset Threshold
Reset Threshold Hysterisis
Reset Threshold Tempco
CD Delay Pin Threshold Voltage
Delay Capacitor Pin Sink Current
Delay Capacitor Pin Source Current
RESET Output Current Low (push-pull active low, and open-drain active-low, G696L
and G697L)
RESET Output Current High (push-pull
active low, G696L)
RESET Output Current Low (push-pull active high, G696H)
RESET Output Current High (push-pull active high, G696H)
ICC
VTH-
CONDITION
UNIT
0.8
---
5.5
1
---
--16.5
5.5
25
VCC<3.6V, G69_ _308/293/263/250_
G69_ _463_
--4.50
13.9
4.6
22
4.69
G69_ _438_
G69_ _400_
4.23
3.88
4.32
3.96
4.40
4.04
G69_ _330_
G69_ _308_
3.25
3.04
3.3
3.10
3.37
3.16
G69_ _293_
2.86
2.91
2.96
G69_ _263_
2.59
2.64
2.69
G69_ _250_
2.45
3.6
--0.87
3
0.5
2.5
5.3
70
1.25
5
0.88
2.55
7
--1.29
--1.2
%
ppm/°C
V
mA
µA
8
---
---
mA
4.5
---
---
mA
3
---
---
---
2
---
---
---
16
---
---
mA
12
---
---
---
10
---
---
---
2
---
---
mA
---
---
1
µA
ICD
VCC = 1.5V, VCD = 0.5V
VCC > VTH- + VHYS
IOL
VCC = 2.5V, V RESET = 0.5V
IOH
MAX
TA = -40°C +105°C
VCC<5.5V, G69_ _463/438/400/330_
VTDC
IOL
TYP
TA = 0°C +70°C
VHYS
IOH
MIN
VCC = 5V, V RESET = 4.5V,
G696L463/438/400/330
VCC = 3.3V, V RESET = 2.8V,
G696L308/293
VCC = 3V, V RESET = 2.5V,
G696L263/250
VCC = 5V, VRESET = 0.5V,
G696H463/438/400/330
VCC = 3.3V, VRESET = 0.5V,
G696H308/293
VCC = 3V, VRESET = 0.5V,
G696H263/250
VCC = 2.5V, VRESET = 2V
RESET Open-Drain Output Leakage CurVCC > VTH, RESET deasserted
rent (G697L)
Note 1: Production testing done at TA = +25°C; limits over temperature guaranteed by design.
V
µA
V
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.8
May 10, 2006
4
G696/G697
Global Mixed-mode Technology Inc.
Typical Operating Characteristics
(VCC = full range, TA = -40°C to +105°C, unless otherwise noted. Typical values are at TA = +25°C, VCC = 5V
for 463/438/400/330 versions, VCC= 3.3V for 308/293 versions, and VCC = 3V for 263/250 version.)
Supply Current vs. VCC
Supply Curremt vs. Temperature (No Load)
8
7
7
6
5
4
3
2
0 0.6 1 1.2 1.5 1.8 2.1 2.4 2.7 3 3.2 3.3 3.4 3.5 3.7 3.9 4 4.5 5 5.5 6
2
VCC (V)
20
40
Temperature (°C)
Normalized Reset Threshold vs. Temperature
CD Delay Pin Sink Current vs. Voltage
-20
1.05
60
80
35
I CD, CD Delay Pin Sink Current (mA)
V TH+
1.04
1.03
1.02
V T H-
1.01
1
0.99
0.98
0.97
30
V CC=3V
25
20
V CC=2.5V
15
10
V CC=1.5V
5
0.96
0
-40 -30 -20 -10
0
10
20
27
30
40
50
60
70
80
90
0.05
TA , Ambient Temperature ( °C)
0.2 0.4 0.6 1.2 1.8
V CD, Delay Pin Voltage (V)
2.4
3
Output Time Delay vs. Capacitance
(VCC <VTH to output change)
Output Time Delay vs. Capacitance
(VCC>VTH to output change)
10000
10000
1000
1000
Output Time Delay ( µ S)
Output Time Delay(mS)
0
40
1.06
(V)
V CC=2.5V
3
0
-40
0
TH-
4
1
1
Normalized Ormalized VTH+ , V
V CC=3.3V
5
Supply Current (µA)
Supply Current (µA)
6
V CC=5V
100
10
1
100
10
1
0.1
0.1
0.0001
0.001
0.01
0.1
0.0001
1
CD, Delay Pin Capacitance ( µF)
0.001
0.01
0.1
1
CD, Delay Pin Capacitance ( µF)
TEL: 886-3-5788833
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Ver: 1.8
May 10, 2006
5
Global Mixed-mode Technology Inc.
G696/G697
Typical Operating Characteristics (continued)
Reset Output Time Delay vs. Temperature
300
Output Time Delay (ms)
250
200
CD=0.1µF
150
100
50
0
-40 -30 -20 -10
0
10
20 30
40 50
60
70
80
90
TA , Ambient Temperature ( °C)
Recommended Minimum Footprint
SOT-23-5 / TSOT-23-5
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.8
May 10, 2006
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G696/G697
Global Mixed-mode Technology Inc.
Timing Diagram
V CC
V TH +
V TH -
V C C , P in 2
V CC
C D , P in 5
0 .6 7 5 V IN
R e se t O u tp u t
(A ctiv e L ow ), P in 1
V TH -
V CC
0V
V CC
R e se t O u tp u t
(A ctiv e H ig h ), P in 1
V TH 0V
tD 2
Figure 1
Functional Diagram
2
VCC
2
ICD
+
*
RESET
ICD
1
VTH
3 GND 5
() is for G696H
1
VCC
RESET
(RESET)
+
VTH
3
CD
GND 5
CD
Figure 2
TEL: 886-3-5788833
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Ver: 1.8
May 10, 2006
7
G696/G697
Global Mixed-mode Technology Inc.
Pin Description
PIN
NAME
RESET (G696L/G697L)
1
RESET (G696H)
2
3
4
5
VCC
GND
NC
CD
FUNCTION
RESET Output remains low while VCC is below the reset threshold, and for delay time set by CD
after VCC rises above the reset threshold.
RESET Output remains high while VCC is below the reset threshold, and for delay time set by CD
after VCC rises above the reset threshold.
Supply Voltage (+5V, +3.3V, +3.0V)
Ground
No Connection.
External Programmable time delay is set by the capacitor connect to CD pin.
Detailed Description
A microprocessor’s (µP’s) reset input starts the µP in a
known state. The G697L/G696L/G696H assert reset to
prevent code-execution errors during power-up,
power-down, or brownout conditions. They assert a
reset signal whenever the VCC supply voltage declines
below a preset threshold (VTH-), keeping it asserted for
time delay set by capacitor connected to CD pin, after
VCC has risen above the high reset threshold VTH+
(VTH-+VHYS). The G697L uses an open-drain output,
and the G696L/G696H have a push-pull output stage.
Connect a pull-up resistor on the G697L’s RESET output to any supply between 0 and 5.5V.
must be valid down to 0V, adding a pull-down resistor
to RESET causes any stray leakage currents to flow
to ground, holding RESET low (Figure 4). R1’s value
is not critical; 100kΩ is large enough not to load
RESET and small enough to pull RESET to ground.
A 100kΩ pull-up resistor to VCC is also recommended
for the G697L if RESET is required to remain valid
for VCC < 0.8V.
VCC
The time delay is set by external capacitor CD, and
internal pull up current ICD. When the voltage at CD
pin exceeds the buffer threshold, typically 1.25V, the
RESET output high (RESET output low). The voltage detector and buffer have built-in hysterisis to
prevent erratic reset operation. The formula of time
delay is T (ms) ≅ 1685 CD (µF). Fig1 and Fig2 show a
timing deagram and a Functional Block.
VCC
VCC
RPULL-UP
µP
G697
RESET MOTOROLA
INPUT
68HCXX
RESET
GND
GND
VCC
Figure 4. Interfacing to µPs with Bidirectional Reset I/O
G696
RESET
+5.0
+5.0V
GND
R1
100k
+3.3V
VCC
VCC
RPULL-UP
5V SYSTEM
G697
Figure3. RESET Valid to VCC = Ground Circuit
RESET
Ensuring a Valid Reset Output Down to VCC = 0
When VCC falls below 0.8V, the G696 RESET output
no longer sinks current-it becomes an open circuit.
Therefore, high-impedance CMOS logic inputs connected to RESET can drift to undetermined voltages.
This presents no problem in most applications since
most µP and other circuitry is inoperative with VCC
below 0.8V. However, in applications where RESET
GND
RESET
INPUT
GND
Figure 5. G697L Open-Drain RESET Output Allows
Use with Multiple Supplies
TEL: 886-3-5788833
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Ver: 1.8
May 10, 2006
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Global Mixed-mode Technology Inc.
Interfacing to µPs with Bidirectional Reset Pins
Since the RESET output on the G697L is open drain,
this device interfaces easily with µPs that have bidirectional reset pins, such as the Motorola 68HC11. Connecting the µP supervisor’s RESET output directly to
G696/G697
high as VCC decays toward 0. The voltage where this
occurs depends on the pull-up resistor value and the
voltage to which it is connected.
Benefits of Highly Accurate Reset Threshold
Most µP supervisor ICs have reset threshold voltages
between 5% and 10% below the value of nominal
supply voltages. This ensures a reset will not occur
within 5% of the nominal supply, but will occur when
the supply is 10% below nominal.
the microcontroller’s (µC’s) RESET pin with a single
pull-up resistor allows either device to assert reset
(Figure 5).
G697L Open-Drain RESET Output Allows Use with
Multiple Supplies
Generally, the pull-up connected to the G697L will
connect to the supply voltage that is being monitored
at the IC’s VCC pin. However, some systems may use
the open-drain output to level-shift from the monitored
supply to reset circuitry powered by some other supply
(Figure 6). Note that as the G697L’s VCC decreases
below 1V, so does the IC’s ability to sink current at
RESET . Also, with any pull-up, RESET will be pulled
When using ICs rated at only the nominal supply ±5%,
this leaves a zone of uncertainty where the supply is
between 5% and 10% low, and where the reset may or
may not be asserted.
The G69_ _463/G69_ _308 use highly accurate circuitry
to ensure that reset is asserted close to the 5% limit,
and long before the supply has declined to 10% below
nominal.
TEL: 886-3-5788833
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Ver: 1.8
May 10, 2006
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G696/G697
Global Mixed-mode Technology Inc.
Package Information
C
D
L
E
H
θ1
e1
e
A
A2
A1
b
SOT-23-5 (T1) Package
1.
2.
3.
4.
Note:
Package body sizes exclude mold flash protrusions or gate burrs
Tolerance ±0.1000 mm (4mil) unless otherwise specified
Coplanarity: 0.1000mm
Dimension L is measured in gage plane
MIN.
DIMENSION IN MM
NOM.
MAX.
MIN.
DIMENSION IN INCH
NOM.
A
1.00
1.10
1.30
0.039
0.043
0.051
A1
A2
0.00
0.70
----0.80
0.10
0.90
0.000
0.028
----0.031
0.004
0.035
b
C
0.35
0.10
0.40
0.15
0.50
0.25
0.014
0.004
0.016
0.006
0.020
0.010
D
E
e
e1
H
L
θ1
2.70
1.40
--------2.60
0.37
2.90
1.60
1.90(TYP)
0.95
2.80
------
3.10
1.80
--------3.00
-----
0.106
0.055
--------0.102
0.015
0.114
0.063
0.075(TYP)
0.037
0.110
-----
0.122
0.071
--------0.118
-----
1°
5°
9°
1°
5°
9°
SYMBOL
MAX.
5.
TEL: 886-3-5788833
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Ver: 1.8
May 10, 2006
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G696/G697
Global Mixed-mode Technology Inc.
C
D
L
H
E
θ1
e1
e
A
A2
A1
b
TSOT-23-5 (TO) Package
Note:
6. Package body sizes exclude mold flash protrusions or gate burrs
7. Tolerance ±0.1000 mm (4mil) unless otherwise specified
8. Coplanarity: 0.1000mm
9. Dimension L is measured in gage plane
MIN.
DIMENSION IN MM
NOM.
MAX.
MIN.
DIMENSION IN INCH
NOM.
A
-----
-----
1.00
-----
-----
0.039
A1
A2
b
C
D
E
e
0.00
----0.35
0.10
2.70
1.40
-----
--------0.40
0.15
2.90
1.60
1.90(TYP)
0.10
0.90
0.50
0.25
3.10
1.80
-----
0.000
----0.014
0.004
0.106
0.055
-----
--------0.016
0.006
0.114
0.063
0.075(TYP)
0.004
0.035
0.020
0.010
0.122
0.071
-----
e1
H
L
θ1
----2.60
0.37
0.95
2.80
------
----3.00
-----
----0.102
0.015
0.037
0.110
-----
----0.118
-----
1°
5°
9°
1°
5°
9°
SYMBOL
MAX.
Taping Specification
PACKAGE
Q’TY/REEL
SOT-23-5
TSOT-23-5
3,000 ea
3,000 ea
Feed Direction
TSOT-23-5、SOT-23-5 Package Orientation
GMT Inc. does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and GMT Inc. reserves the right at any time without notice to change said circuitry and specifications.
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.8
May 10, 2006
11
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