G696_06 [GMT]
Microprocessor Reset IC; 微处理器复位IC
| 型号： | G696_06 |
| 厂家： | 
GLOBAL MIXED-MODE TECHNOLOGY INC |
| 描述： | Microprocessor Reset IC |
| 文件： | 总11页 (文件大小：165K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Global Mixed-mode Technology Inc.
G696/G697
Microprocessor Reset IC
Features
General Description
Precision Monitoring of +3V, +3.3V, and +5V
Power-Supply Voltages
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.
Fully Specified Over Temperature
Available in Three Output Configurations
Push-Pull RESET Output (G696L)
Push-Pull RESET Output (G696H)
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 pro-
grammable time delay generator after VCC has risen
above the reset threshold. Reset thresholds suitable
for operation with a variety of supply voltages are
available.
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
The G697L has an open-drain output stage, while the
G696 have push-pull outputs. The G697L’s open-drain
Applications
Computers
RESET output requires a pull-up resistor that can be
connected to a voltage higher than VCC. The G696L
Controllers
Intelligent Instruments
Critical µP and µC Power Monitoring
Portable / Battery-Powered Equipment
Automotive
have an active-low RESET output, while the G696H
has an active-high RESET output. The reset com-
parator 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.
Low supply current makes the G696/G697 ideal for
use in portable equipment. The G696/G697 are avail-
able in 5-pin SOT23-5 or TSOT-23-5 packages.
Pin Configuration
Typical Application Circuit
VCC
RESET
(RESET)
1
CD
5
4
VCC
VCC
Rpull-up*
G696/G697
G696/G697
VCC
GND
2
3
µP
RESET
INPUT
RESET
(RESET)
CD
NC
GND
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
Global Mixed-mode Technology Inc.
G696/G697
Ordering Information
ORDER NUMBER
(Pb free)
ORDER NUMBER
TEMP. RANGE
PACKAGE
G696HxxxT1U
G696LxxxT1U
G697LxxxT1U
G696HxxxTOU
G696LxxxTOU
G697LxxxTOU
G696HxxxT1Uf
G696LxxxT1Uf
G697LxxxT1Uf
G696HxxxTOUf
G696LxxxTOUf
G697LxxxTOUf
-40°C ~ +105°C
-40°C ~ +105°C
-40°C ~ +105°C
-40°C ~ +105°C
-40°C ~ +105°C
-40°C ~ +105°C
SOT-23-5
SOT-23-5
SOT-23-5
TSOT-23-5
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
RESET THRESHOLD (V)
OUTPUT TYPE
TOP MARK
(Pb free)
G697L463T1U
G697L438T1U
G697L400T1U
G697L330T1U
G697L308T1U
G697L293T1U
G697L263T1U
G697L463T1Uf
G697L438T1Uf
G697L400T1Uf
G697L330T1Uf
G697L308T1Uf
G697L293T1Uf
G697L263T1Uf
4.60
4.32
3.96
3.30
3.10
2.91
2.64
Open-DrainRESET
RESET
697Gx
697Fx
697Ex
697Dx
697Cx
697Bx
697Ax
Open-Drain
Open-DrainRESET
Open-DrainRESET
Open-DrainRESET
Open-DrainRESET
Open-Drain
RESET
G697L250T1U
G696H463T1U
G696H438T1U
G696H400T1U
G696H330T1U
G696H308T1U
G696H293T1U
G696H263T1U
G696H250T1U
G696L463T1U
G697L250T1Uf
G696H463T1Uf
G696H438T1Uf
G696H400T1Uf
G696H330T1Uf
G696H308T1Uf
G696H293T1Uf
G696H263T1Uf
G696H250T1Uf
G696L463T1Uf
2.50
4.60
4.32
3.96
3.30
3.10
2.91
2.64
2.50
4.60
Open-Drain RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
697Hx
696Lx
696Kx
696Jx
696Nx
696Ix
696Hx
696Gx
696Qx
696Fx
G696L438T1U
G696L400T1U
G696L330T1U
G696L308T1U
G696L293T1U
G696L263T1U
G696L250T1U
T1: SOT-23-5
G696L438T1Uf
G696L400T1Uf
G696L330T1Uf
G696L308T1Uf
G696L293T1Uf
G696L263T1Uf
G696L250T1Uf
4.32
3.96
3.30
3.10
2.91
2.64
2.50
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
696Ex
696Dx
696Mx
696Cx
696Bx
696Ax
696Px
Push-Pull
RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
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
RESET
G697L463TOU
G697L438TOU
G697L400TOU
G697L330TOU
G697L308TOU
G697L293TOU
G697L263TOU
G697L463TOUf
G697L438TOUf
G697L400TOUf
G697L330TOUf
G697L308TOUf
G697L293TOUf
G697L263TOUf
4.60
4.32
3.96
3.30
3.10
2.91
2.64
Open-Drain
697Gx
697Fx
697Ex
697Dx
697Cx
697Bx
697Ax
Open-DrainRESET
Open-DrainRESET
Open-DrainRESET
Open-DrainRESET
Open-Drain
RESET
Open-Drain RESET
G697L250TOU
G696H463TOU
G696H438TOU
G696H400TOU
G696H330TOU
G696H308TOU
G696H293TOU
G696H263TOU
G696H250TOU
G696L463TOU
G697L250TOUf
G696H463TOUf
G696H438TOUf
G696H400TOUf
G696H330TOUf
G696H308TOUf
G696H293TOUf
G696H263TOUf
G696H250TOUf
G696L463TOUf
2.50
4.60
4.32
3.96
3.30
3.10
2.91
2.64
2.50
4.60
Open-Drain RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
697Hx
696Lx
696Kx
696Jx
696Nx
696Ix
696Hx
696Gx
696Qx
696Fx
G696L438TOU
G696L400TOU
G696L330TOU
G696L308TOU
G696L293TOU
G696L263TOU
G696L250TOU
TO: TSOT-23-5
G696L438TOUf
G696L400TOUf
G696L330TOUf
G696L308TOUf
G696L293TOUf
G696L263TOUf
G696L250TOUf
4.32
3.96
3.30
3.10
2.91
2.64
2.50
Push-Pull RESET
Push-Pull RESET
696Ex
696Dx
696Mx
696Cx
696Bx
696Ax
696Px
Push-Pull
RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
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)
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,RESET (push-pull) . . . . .-0.3V to (VCC + 0.3V)
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
CONDITION
TA = 0°C +70°C
MIN TYP MAX UNIT
0.8
1
---
---
5.5
5.5
VCC Range
V
TA = -40°C +105°C
VCC<5.5V, G69_ _463/438/400/330_
VCC<3.6V, G69_ _308/293/263/250_
G69_ _463_
---
16.5
13.9
4.6
25
Supply Current (SOT-23-5)
ICC
µA
---
22
4.50
4.69
4.40
4.04
3.37
3.16
2.96
2.69
G69_ _438_
4.23 4.32
3.88 3.96
G69_ _400_
G69_ _330_
3.25
3.3
Reset Threshold
VTH-
V
G69_ _308_
3.04 3.10
2.86 2.91
2.59 2.64
G69_ _293_
G69_ _263_
G69_ _250_
2.45
3.6
---
2.5
5.3
70
2.55
7
---
Reset Threshold Hysterisis
Reset Threshold Tempco
CD Delay Pin Threshold Voltage
Delay Capacitor Pin Sink Current
Delay Capacitor Pin Source Current
VHYS
%
ppm/°C
V
mA
µA
VTDC
ICD
0.87
3
0.5
1.25
5
0.88
1.29
---
1.2
VCC = 1.5V, VCD = 0.5V
VCC > VTH- + VHYS
RESET Output Current Low (push-pull ac-
tive low, and open-drain active-low, G696L
and G697L)
VCC = 2.5V, V RESET = 0.5V
IOL
8
---
---
mA
VCC = 5V, V RESET = 4.5V,
G696L463/438/400/330
VCC = 3.3V, V RESET = 2.8V,
G696L308/293
4.5
3
---
---
---
---
mA
---
RESET Output Current High (push-pull
active low, G696L)
IOH
V
CC = 3V, V RESET = 2.5V,
2
16
12
10
2
---
---
---
---
---
---
---
---
---
---
---
mA
---
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
RESET Output Current Low (push-pull ac-
tive high, G696H)
IOL
---
RESET Output Current High (push-pull ac-
tive high, G696H)
IOH
VCC = 2.5V, VRESET = 2V
mA
RESET Open-Drain Output Leakage Cur-
rent (G697L)
---
---
1
µA
VCC > VTH, RESET deasserted
Note 1: Production testing done at TA = +25°C; limits over temperature guaranteed by design.
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.8
May 10, 2006
4
Global Mixed-mode Technology Inc.
G696/G697
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
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
VCC=5V
VCC=3.3V
VCC=2.5V
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
-40
-20
0
20
40
60
80
Temperature ( C)
°
VCC (V)
Normalized Reset Threshold vs. Temperature
CD Delay Pin Sink Current vs. Voltage
40
35
30
25
20
15
10
5
1.06
1.05
1.04
1.03
1.02
1.01
1
VTH
+
VCC=3V
VTH-
VCC=2.5V
VCC=1.5V
0.99
0.98
0.97
0.96
0
-40 -30 -20 -10
0
10 20 27 30 40 50 60 70 80 90
0.05 0.2 0.4 0.6 1.2 1.8 2.4
VCD, Delay Pin Voltage (V)
3
T , Ambient Temperature ( C)
°
A
Output Time Delay vs. Capacitance
(VCC<VTH to output change)
Output Time Delay vs. Capacitance
(VCC>VTH to output change)
10000
1000
100
10
10000
1000
100
10
1
1
0.1
0.1
0.0001
0.001
0.01
0.1
1
0.0001
0.001
0.01
0.1
1
CD, Delay Pin Capacitance ( F)
µ
CD, Delay Pin Capacitance ( F)
µ
TEL: 886-3-5788833
http://www.gmt.com.tw
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
250
200
C =0.1 F
µ
D
150
100
50
0
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90
T , Ambient Temperature ( C)
°
A
Recommended Minimum Footprint
SOT-23-5 / TSOT-23-5
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.8
May 10, 2006
6
Global Mixed-mode Technology Inc.
G696/G697
Timing Diagram
VCC
+
VTH
VCC, Pin 2
-
VTH
VCC
CD, Pin 5
0.675 VIN
VCC
Reset Output
(Active Low), Pin 1
VTH
-
0V
VCC
Reset Output
(Active High), Pin 1
VTH
-
0V
tD2
Figure 1
Functional Diagram
1
VCC
2
VCC
RESET
2
ICD
ICD
1
RESET
(RESET)
+
+
*
VTH
VTH
3
GND
3
GND
5
5
CD
CD
() is for G696H
Figure 2
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.8
May 10, 2006
7
Global Mixed-mode Technology Inc.
G696/G697
Pin Description
PIN
NAME
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 (G696L/G697L)
1
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.
RESET (G696H)
2
3
4
5
VCC
GND
NC
Supply Voltage (+5V, +3.3V, +3.0V)
Ground
No Connection.
CD
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.
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.
Connect a pull-up resistor on the G697L’s RESET out-
put to any supply between 0 and 5.5V.
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
VCC
VCC
RPULL-UP
µP
G697
RESET output high (RESET output low). The volt-
age 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.
RESET MOTOROLA
RESET
INPUT
68HCXX
GND
GND
VCC
Figure 4. Interfacing to µPs with Bidirectional Re-
G696
set I/O
RESET
+5.0V
R1
100k
+3.3V
GND
VCC
VCC
RPULL-UP
5V SYSTEM
G697
Figure3. RESET Valid to VCC = Ground Circuit
Ensuring a Valid Reset Output Down to VCC = 0
RESET
INPUT
RESET
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 con-
GND
GND
nected to RESET can drift to undetermined voltages.
This presents no problem in most applications since
most µP and other circuitry is inoperative with VCC
Figure 5. G697L Open-Drain RESET Output Allows
Use with Multiple Supplies
below 0.8V. However, in applications where RESET
TEL: 886-3-5788833
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Ver: 1.8
May 10, 2006
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Global Mixed-mode Technology Inc.
G696/G697
Interfacing to µPs with Bidirectional Reset Pins
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.
Since the RESET output on the G697L is open drain,
this device interfaces easily with µPs that have bidirec-
tional reset pins, such as the Motorola 68HC11. Con-
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.
necting the µP supervisor’s RESET output directly to
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
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.
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
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.
RESET . Also, with any pull-up, RESET will be pulled
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.8
May 10, 2006
9
Global Mixed-mode Technology Inc.
G696/G697
Package Information
C
D
L
H
E
θ1
e1
e
A
A2
A1
b
SOT-23-5 (T1) Package
Note:
1. Package body sizes exclude mold flash protrusions or gate burrs
2. Tolerance ±0.1000 mm (4mil) unless otherwise specified
3. Coplanarity: 0.1000mm
4. Dimension L is measured in gage plane
DIMENSION IN MM
SYMBOL
DIMENSION IN INCH
MIN.
1.00
0.00
0.70
0.35
0.10
2.70
1.40
-----
NOM.
1.10
MAX.
1.30
0.10
0.90
0.50
0.25
3.10
1.80
-----
MIN.
0.039
0.000
0.028
0.014
0.004
0.106
0.055
-----
NOM.
0.043
-----
MAX.
0.051
0.004
0.035
0.020
0.010
0.122
0.071
-----
A
A1
A2
b
-----
0.80
0.031
0.016
0.006
0.114
0.063
0.075(TYP)
0.037
0.110
-----
0.40
C
0.15
D
2.90
E
1.60
e
1.90(TYP)
0.95
e1
H
-----
-----
-----
-----
2.60
0.37
1°
2.80
3.00
-----
0.102
0.015
1°
0.118
-----
L
------
θ1
5°
9°
5°
9°
5.
TEL: 886-3-5788833
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Ver: 1.8
May 10, 2006
10
Global Mixed-mode Technology Inc.
G696/G697
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
DIMENSION IN MM
SYMBOL
DIMENSION IN INCH
MIN.
-----
0.00
-----
0.35
0.10
2.70
1.40
-----
-----
2.60
0.37
1°
NOM.
-----
MAX.
1.00
0.10
0.90
0.50
0.25
3.10
1.80
-----
MIN.
-----
NOM.
-----
MAX.
0.039
0.004
0.035
0.020
0.010
0.122
0.071
-----
A
A1
A2
b
-----
0.000
-----
-----
-----
-----
0.40
0.014
0.004
0.106
0.055
-----
0.016
0.006
0.114
0.063
0.075(TYP)
0.037
0.110
-----
C
0.15
D
2.90
E
1.60
e
1.90(TYP)
0.95
e1
H
-----
-----
-----
2.80
3.00
-----
0.102
0.015
1°
0.118
-----
L
------
5°
θ1
9°
5°
9°
Taping Specification
PACKAGE
SOT-23-5
Q’TY/REEL
3,000 ea
TSOT-23-5
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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