G663 Global Mixed-mode Technology Microprocessor Reset IC Features General Description The G663 provide circuits initialization and timing supervision, primarily for DSP and processor-based systems. 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 VIT+(1). 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 VCC=3.3V SOT-23-5 Package An internal timer delays the return of the output to the inactive state to ensure proper system reset. The delay time, td, starts after VCC has risen above the threshold voltage VIT+. When the supply voltage drops below the threshold voltage VIT-(2), the outputs becomes active again. No external components are required. All the devices have a fixed-sense threshold voltage VIT- set by an internal voltage divider. 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 The G663 incorporate a manual reset input MR . A low level at MR causes RESET (RESET) to become 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. Note: (1) VIT+ means the reset voltage of VCC from low to high (2) VIT- means the reset voltage of VCC from high to low. Ordering Information ORDER NUMBER RESET THRESHOLD (V) MARKING OUTPUT TYPE TEMP. RANGE PACKAGE (Green) G663-225T11U 2.25 663Ax Push-Pull RESET & RESET -40°C ~ +85°C SOT-23-5 G663-263T11U 2.63 663Bx Push-Pull RESET & RESET -40°C ~ +85°C SOT-23-5 G663-293T11U 2.93 663Cx Push-Pull RESET & RESET -40°C ~ +85°C SOT-23-5 G663-455T11U 4.55 663Dx Push-Pull RESET & RESET -40°C ~ +85°C SOT-23-5 Note: T1: SOT-23-5 1: Bonding Code U: Tape & Reel Pin Configuration Typical Application Circuit 3.3V VCC 100nF* VCC G663 RESET 1 5 RESET VCC RESET µP G663 GND 2 RESET 3 MR RESET 4 MR GND RESET GND SOT-23-5 ＊ 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: 886-3-5788833 http://www.gmt.com.tw Ver: 0.3 Apr 10, 2012 1