G692 ETC
Document overview
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Technical content
Features
Precision Monitoring of +3V, +3.3V, and +5V Power-Supply Voltages Fully Specified Over Temperature Available in Three Output Configurations Push-Pull RESET Output (G692L) Push-Pull RESET Output (G692H) Open-Drain RESET Output (G693L) 140ms min Power-On Reset Pulse Width 5µA Supply Current Guaranteed Reset Valid to VCC = +1V Power Supply Transient Immunity No External Components Manual Reset Input 4-Pin SOT143 Package
Applications
Computers Controllers Intelligent Instruments Critical µP and µC Power Monitoring Portable / Battery-Powered Equipment Automotive General Description The G692/G693 are microprocessor (µP) supervisory circuits used to monitor the power supplies in µP and digital systems. They provide excellent circuit reliability and low cost by eliminating external components and adjustments when used with +5V, +3.3V, +3.0V- pow- ered circuits. The G692/G693 also provide a de- bounced manual reset input. These circuits perform a single function: they assert a reset signal whenever the V CC supply voltage declines below a preset threshold, keeping it asserted for at least 140ms after V CC has risen above the reset threshold. Reset thresholds suitable for operation with a variety of supply voltages are available. The G693L has an open-drain output stage, while the G692 have push-pull outputs. The G693L’s open-drain RESET output requires a pull-up resistor that can be connected to a voltage higher than V CC. The G692L have an active-low RESET output, while the G692H has an active-high RESET output. The reset com- parator is designed to ignore fast transients on V CC, and the outputs are guaranteed to be in the correct logic state for V CC down to 1V. Low supply current makes the G692/G693 ideal for use in portable equipment. The G692/G693 are avail- able in a 4-pin SOT143 packages.
Ordering Information
PART TEMP. RANGE PIN-PACKAGE G692H(L)xxxTC -40°C ~ + 105°C SOT143 G693LxxxTC -40°C ~ + 105°C SOT143 * xxx specifies the threshold voltage. e.g. 263 denotes the 2.63V threshold voltage. P i n C o n f i g u r a t i o n T y p i c a l O p e r a t i n g C i r c u i t RESET INPUT GND µP VCC RESET (RESET) GND G692/G693 VCC RPULL-UP VCC *G693 ONLY MR VCC SOT143 G692/G693 4GND 2RESET(RESET) MR3 ()is for G692H RESET INPUT GND µP VCC RESET (RESET) GND G692/G693 VCC RPULL-UP VCC *G693 ONLY MR RESET INPUT GND µP VCC RESET (RESET) GND G692/G693 VCC RPULL-UP VCC *G693 ONLY MR VCC SOT143 G692/G693 4GND 2RESET(RESET) MR3 ()is for G692H VCC SOT143 G692/G693 4GND 2RESET(RESET) MR3 ()is for G692H
Ver: 1.0 Sep 23, 2002 TEL: 886-3-5788833 http://www.gmt.com.tw G692/G693 Global Mixed-mode Technology Inc. Absolute Maximum Ratings Terminal Voltage (with respect to GND) Continuous Power Dissipation (TA = +70°C) Stresses beyond those listed under “Absolute Maximum Ratings” may cause p’ermanent damage to the device. These are stress rat- ings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational se ctions 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 versions, VCC= 3.3V for 308/293 versions, and VCC = 3V for 263 version.) (Note 1) PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS TA = 0°C +70°C 1.0 5.5 VCC Range VCC<5.5V, G69_ _463/438/400_ 5.5 9 Supply Current I CC T A = -40°C +105°C VCC<3.6V, G69_ _308/293/263_ 5 8 µA G69_ _463_ TA = +25°C 4.537 4.63 4.722 G69_ _438_ TA = +25°C 4.292 4.38 4.467 G69_ _400_ TA = +25°C 3.92 4.00 4.08 G69_ _308_ TA = +25°C 3.018 3.08 3.141 G69_ _293_ TA = +25°C 2.871 2.93 2.988 Reset Threshold V TH G69_ _263_ TA = +25°C 2.577 2.63 2.682 V
Ver: 1.0 Sep 23, 2002 TEL: 886-3-5788833 http://www.gmt.com.tw G692/G693 Global Mixed-mode Technology Inc. Electrical Characteristics (Continued) (VCC = full range, T A = -40°C to +105°C, unless otherwise noted. Typical values are at T A = +25°C, V CC = 5V for 463/438/400 versions, VCC= 3.3V for 308/293 versions, and VCC = 3V for 263 version.) (Note 1) PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS Reset Threshold Tempco 70 ppm/°C VCC to Reset Delay (Note 2) V CC = VTH to (VTH – 100mV) 15 VCC = VTH max, G69_ _ 463/438/400 250 510 720 Reset Active Timeout Period VCC = VTH max, G69_ _308/293/263 140 310 520 ms MR Minima Pulse Width tMR 10 µs MR Glitch Immunity (Note 3) 100 ns MR to Reset Propagation Delay (Note 2) tMD 0.5 µs VIH 0.6 x V CC MR Input Threshold VIL VCC > VTH(max) 0.25 x VCC V MR Pull-up Resistance 10 20 30 K Ω RESET Output Current Low (push-pull active low, and open- drain active-low, G692L and G693L) IOL VCC = 2.5V, V RESET = 0.5V 8 mA VCC = 5V, V RESET = 4.5V, G692L463/438/400 4.5 VCC = 3.3V, V RESET = 2.8V, G692L308/293 3 RESET Output Current High (push-pull active low, G692L) IOH VCC = 3V, V RESET = 2.5V, G692L263 2 mA VCC = 5V, VRESET = 0.5V, G692H463/438/400 16 VCC = 3.3V, VRESET = 0.5V, G692H308/293 12 RESET Output Current Low (push-pull active high, G692H) IOL VCC = 3V, VRESET = 0.5V, G692H263 10 mA RESET Output Current High (push-pull active high, G692H) IOH V CC = 2.5V, VRESET = 2V 2 mA RESET Open-Drain Output Leakage Current (G693L) VCC > VTH, RESET deasserted 1 µA Note 1: Production testing done at TA = +25°C; limits over temperature guaranteed by design. Note 2: RESET output is for G692L/G693L; While RESET output is for G692H. Note 3: “Glitches” of 100ns or less typically will not generate a reset pulse. Selector Guide PART/SUFFIX RESET THRESHOLD (V) OUTPUT TYPE TOP MARK G693L463T_ 4.63 Open-DrainRESET 693Fx G693L438T_ 4.38 Open-DrainRESET 693Ex G693L400T_ 4.00 Open-DrainRESET 693Dx G693L308T_ 3.08 Open-DrainRESET 693Cx G693L293T_ 2.93 Open-DrainRESET 693Bx G693L263T_ 2.63 Open-DrainRESET 693Ax G692H463T_ 4.63 Push-Pull RESET 692Lx G692H438T_ 4.38 Push-Pull RESET 692Kx G692H400T_ 4.00 Push-Pull RESET 692Jx G692H308T_ 3.08 Push-Pull RESET 692Ix G692H293T_ 2.93 Push-Pull RESET 692Hx G692H263T_ 2.63 Push-Pull RESET 692Gx G692L463T_ 4.63 Push-Pull RESET 692Fx G692L438T_ 4.38 Push-Pull RESET 692Ex G692L400T_ 4.00 Push-Pull RESET 692Dx G692L308T_ 3.08 Push-Pull RESET 692Cx G692L293T_ 2.93 Push-Pull RESET 692Bx G692L263T_ 2.63 Push-Pull RESET 692Ax
Ver: 1.0 Sep 23, 2002 TEL: 886-3-5788833 http://www.gmt.com.tw G692/G693 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 versions, VCC= 3.3V for 308/293 versions, and VCC = 3V for 263 version.) Supply Current vs.Temperature (No Load) - 4 0 - 2 00 2 04 06 08 0 Temperature (°C) Supply Current (µA) G69_ _ 463/438/400, VCC=5V G69_ _ 308/293/263, VCC=3.3V G69_ _ 463/438/400/308/293/263, VCC=1V Power-up Reset Timeout vs. Temperature 305 310 315 320 325 330 - 4 0 - 2 00 2 04 06 08 0 Temperature (°C) Power-up Reset Timeout (ms) G69_ _ 308/293/263 Normalized Reset Threshold vs. Temperature 0.986 0.988 0.99 0.992 0.994 0.996 0.998 1.002 1.004 1.006 - 4 0 - 2 00 2 04 06 08 0 Temperature(°C) Normalized Threshold Power-down Reset Delay vs. Temperature - 4 0 - 2 00 2 04 06 08 0 Temperature(°C) Power-down Reset Delay (µs) VOD=VTH-VCC VOD=20mV VOD=125mV VOD=200mV
Ver: 1.0 Sep 23, 2002 TEL: 886-3-5788833 http://www.gmt.com.tw G692/G693 Global Mixed-mode Technology Inc. Pin Description PIN NAME FUNCTION
1 GND Ground
(G693L/G692L) RESET Output remains low while V CC is below the reset threshold, and for at least 140ms after VCC rises above the reset threshold. 2 RESET (G692H) RESET Output remains high while V CC is below the reset threshold, and for at least 140ms after VCC rises above the reset threshold. MR Manual Reset Input. A logic low on MR asserts reset. Reset remains asserted as long as MR is low and for at least 140ms after MR returns high, This active-low input has an internal 20k Ω pull- up resistor. It can be driven from a TTL or CMOS-logic line, or shorted to ground with a switch. Leave open if unused. 4 V CC Supply Voltage (+5V, +3.3V, +3.0V) Detailed Description A microprocessor’s (µP’s) reset input starts the µP in a known state. The G693L/G692L/G692H assert reset to prevent code-execution errors during power-up, power-down, or brownout conditions. They assert a reset signal whenever the V CC supply voltage declines below a preset threshold, keeping it asserted for at least 140ms after V CC has risen above the reset threshold. The G693L uses an open-drain output, and the G692L/G692H have a push-pull output stage. Con- nect a pull-up resistor on the G693L’s RESET output to any supply between 0 and 5.5V. The manual reset input ( MR ) can also initiate a reset. See the Manual Reset Input Section. Manual Reset Input Many µP-based products require manual reset capabil- ity, allowing the operator, a test technician, or external logic circuitry to initiate a reset. A logic low on MR as- serts reset. Reset remains asserted while MR is low, and for the Reset Active Timeout Period (t RP) after MR returns high. This input has an internal 20k Ω pull-up resistor, so it can be left open if it is not used. MR can be driven with TTL or CMOS-logic levels, or with open-drain / collector outputs. Connect a normally open momentary switch from MR to GND to create a manual-reset function; external debounce circuitry is not required. If MR is driven from long cables or if the device is used in a noisy environment, connecting a 0.1µF capacitor from MR to ground provides additional noise immunity. Figure 1.Maximum Transient Duration Without Causing a Reset Pulse vs. Reset Com- parator Overdrive Figure2. RESET Valid to VCC = Ground Circuit VCC RESET GND G692 100k VCC RESET GND G692 100k 100 200 300 400 500 600 1 10 100 1000 Reset Comparator Overdrive, VTH-VCC (mV) Maximun Transient Duration (u s)
Ver: 1.0 Sep 23, 2002 TEL: 886-3-5788833 http://www.gmt.com.tw G692/G693 Global Mixed-mode Technology Inc.
Package Information
DIMENSION IN MILIMETERS DIMENSION IN INCHS SYMBOL MIN. MAX. MIN. MAX. A 0.95 1.20 0.037 0.047 A1 0.05 0.10 0.002 0.004 A2 0.90 1.10 0.035 0.043 b 0.37 0.46 0.145 0.018 b1 0.76 0.89 0.030 0.035 C 0.10 0.18 0.004 0.007 D 2.80 3.04 0.110 0.120 E 1.20 1.40 0.047 0.055 E1 2.30 2.50 0.091 0.098 e1 1.92 BSC. 0.75 BSC. e2 0.20 BSC. 0.078 BSC. L 0.69 REF. 0.27 REF. 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. E D L C bx3 e2 A E D L C bx3 e2 A A Feed Direction Feed Direction