G663 Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – Microprocessor Reset IC

Global Mixed-mode Technology
Microprocessor Reset IC
G663
Features
„ Power-On Reset Generator With Fixed Delay
Time of 200ms
„ Manual Reset Input
„ Push-Pull RESET and RESET Output
„ Supply Voltage Supervision Range
2.5V, 3V, 3.3V, 5V
„ Supply Current of 10µA at V_CC=3.3V
„ SOT-23-5 Package
Applications
„ Critical μP and μC Power Monitoring
„ Industrial Equipment
„ Programmable Controls
„ Automotive Systems
„ Portable/Battery-Powered Equipment
„ Intelligent Instruments
„ Wireless Communications Systems
„ Notebook/Desktop Computers
General Description
The G663 provide circuits initialization and timing su-
pervision, primarily for DSP and processor-based sys-
tems. During power-on, RESET (RESET) is asserted
when supply voltage VCC becomes higher than 1.1 V.
Thereafter, the supply voltage supervisor monitors
VCC and keeps RESET (RESET) active as long as
VCC remains below the threshold voltage V_IT+(1).
An internal timer delays the return of the output to the
inactive state to ensure proper system reset. The de-
lay time, td, starts after VCC has risen above the
threshold voltage V_IT+. When the supply voltage drops
below the threshold voltage V_IT-(2), the outputs be-
comes active again. No external components are re-
quired. All the devices have a fixed-sense threshold
voltage V_IT- set by an internal voltage divider.
The G663 incorporate a manual reset input MR . A
low level at MR causes RESET (RESET) to be-
come active. The product spectrum is designed for
supply voltages of 2.5V, 3V, 3.3V, and 5V. The circuits
are available in a SOT-23-5 package.
Ordering Information
Note:
(1) V_IT+ means the reset voltage of V_CC from low to high
(2) V_IT- means the reset voltage of V_CC from high to low.
ORDER
RESET
NUMBER THRESHOLD (V)
G663-225T11U
2.25
G663-263T11U
2.63
G663-293T11U
2.93
G663-455T11U
4.55
Note: T1: SOT-23-5
1: Bonding Code
U: Tape & Reel
MARKING
663Ax
663Bx
663Cx
663Dx
OUTPUT TYPE
Push-Pull RESET & RESET
Push-Pull RESET & RESET
Push-Pull RESET & RESET
Push-Pull RESET & RESET
TEMP.
RANGE
-40°C ~ +85°C
-40°C ~ +85°C
-40°C ~ +85°C
-40°C ~ +85°C
PACKAGE
(Green)
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
Pin Configuration
Typical Application Circuit
3.3V
RESET ¹
G663
5 VCC
GND 2
RESET 3
SOT-23-5
4 MR
Ver: 0.3
Apr 10, 2012
VCC
RESET
G663
MR
RESET
GND
100nF*
VCC
RESET
µP
RESET
GND
＊ The bypass capacitor should be mounted as close as possible to VCC.
ICC may increased at high TA, Therefore, can not connect
Resistors to VCC to prevent Icc abnormal behavior at high TA.
TEL: [phone]
http://www.gmt.com.tw
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