MITSUBISHI <Dig./Ana.INTERFACE> M62015L,FP M62016L,FP LOW POWER 2 OUTPUT SYSTEM RESET IC DESCRIPTION PIN CONFIGURATION (TOP VIEW) The M62015, M62016 are semiconductor integrated circuits whose optimum use is for the detection of the rise and fall in the power supply to a microcomputer system in order to reset or release the microcomputer system. The M62015, M62016 carry out voltage detection in 2 steps and have 2 output pins. As Bi-CMOS process and low power dissipating circuits are employed, they output optimum signals through each output pin to a system that requires RAM backup. These ICs also support the backup mode of Mitsubishi microcomputer the M16C. 5 4 3 2 1 VCC Cd RESET INT GND Outline 5P5T FEATURES • Bi-CMOS process realizes a configuration of low current dissipating circuits. Circuit current ICC=3µA (Typ. , normal mode, VCC=3.0V) ICC=1µA (Typ. , backup mode, VCC=2.5V) • Two-step detection of supply voltage Detection voltage in normal mode VS=2.7V (Typ.) Detection voltage in backup mode VBATT=2.0V (Typ.) • Two outputs Reset output (RESET) : Output of compulsive reset signal Interruption output (INT) : Output of interruption signal • Output forms CMOS output : M62015 Open drain : M62016 RESET 1 8 INT Cd 2 7 GND VCC 3 6 NC NC 4 5 NC Outline 8P2S-A NC : NO CONNECTION APPLICATION Prevention of malfunction of microcomputer systems in electronic, equipment such as OA equipment, industrial equipment, and homeuse electronic appliances. VCC BLOCK DIAGRAM R1 Com INTERRUPTION SIGNAL GENERATION BLOCK R2 R3 R4 INT Com RESET SIGNAL GENERATION BLOCK GND (GROUND PIN) ( 1 / 3 ) RESET Cd (PIN TO DELAY CAPACITANCE) MITSUBISHI <Dig./Ana.INTERFACE> M62015L,FP / M62016L,FP LOW POWER 2 OUTPUT SYSTEM RESET IC ABSOLUTE MAXIMUM RATINGS (Ta=25°C, unless otherwise noted.) Parameter Supply voltage Output sink voltage Power dissipation Thermal derating Operating temperature Storage temperature Symbol VCC Isink Pd K Topr Tstg Ratings 8 4 440 4.4 -20 to +75 -40 to +125 Conditions (Ta ≥ 25°C) Unit V mA mW mW/ °C °C °C ELECTRICAL CHARACTERISTICS (Ta=25°C, unless otherwise noted.) Symbol Parameter Test Conditions VS Supply voltage VBATT Battery voltage Hysteresis voltage ∆VS ICC Vsat td tRESET tINT Circuit current Sink ability Delay time Reset output response time Interruption output response time Min 2.55 1.85 Interruption level during Vcc drop Reset level at backup ∆VS=VSH-VSH VCC=3.0V : In normal mode VCC=2.5V : In backup mode VCC=2.5V, Isink=2mA External capacitance Cd=0.33µF When VCC falling When VCC falling Limits Typ Max 2.70 2.85 2.00 2.15 60 3.0 12 1.0 4.0 0.4 0.6 50 50 40 Unit V V mV µA µA V ms µs µs APPLICATION EXAMPLE POWER SUPPLY VDD VCC (+3V) POWER SUPPLY PIN VCC SMOOTHING CAPACITOR BACKUP POWER SUPPLY VBATT (+3V) * 100µF INT INT INTERRUPTION INPUT RESET RESET Cd DELAY CAPACITOR CLOCK OUTPUT OSCILLATOR MICROCOMPUTER SYSTEM RESET IC RESET RESET INPUT M62015 / M62016 0.33µF INT MICROCOMPUTER SYSTEM * : A pull-up resistor is required only in the case of open-drain output. ( 2 / 3 ) MITSUBISHI <Dig./Ana.INTERFACE> M62015L,FP / M62016L,FP LOW POWER 2 OUTPUT SYSTEM RESET IC OPERATION DESCRIPTION VSH VSL VSH VSL VBATT VSH VSL VBATT 3V VCC VSH VSL VBATT ∆VS GND INT UNCERTAIN AREA GND td RESET td UNCERTAIN AREA GND 1 2 3 4 5 1 . If VCC rises to VSH(2.76V), the INT output is set 6 5 . Same as 7 9 10 3 6 . If VCC becomes lower than VBATT (2.00V), the to high level. 2 . RESET goes high td (s) after VSH RESET output is set to low thereby resetting the 5 td=1.52 10 C (sec) microcomputer and initializing system. 3 . If VCC drops to VSH (2.70V), INT goes low. 7 . Same as 1 RESET output continues to be held high. 8 . Same as 2 9 . Same as 3 10 . Same as 6 4 . If VCC returns to VSH, the INT output is set to high level. 8 ( 3 / 3 ) and 5