RNA52A10MM Dual CMOS system–RESET IC REJ03D0858-0500 Rev.5.00 Oct 06, 2008 Description The RNA52A10MM incorporates two reset circuits, one with and one without a delay function, allowing the generation of separate reset signals for a microprocessor and associated system circuits. The detection voltage of each reset circuit is determined by the value of an external resistor, and the internal reference voltage is 1.0 V. The CMOS process for the RNA52A10MM means that the device draws only 1.1 µA (typ.). The reset cancellation delay time is set with a high degree of accuracy by the values of a capacitor and resistor connected with the CD pin. The MR (manual reset) input pin is provided for the reset circuit with the delay function, and the reset signal is output in response to a high level on the MR input pin. The MR pin is pulled down by a 2-MΩ internal resistor. Output pins Vo1 and Vo2 are open drain. Features • • • • • • • • • • • Two CMOS reset circuits, one with and one without the delay function Reference voltage: 1.0 V Reference voltage accuracy: ± 50 mV Reference voltage hysteresis: 6% (typ.) Low current consumption: 1.1 µA (typ.) Delay time set by an external CR circuit Manual reset input Open-drain output MMPAK-8 (8-pin) package Operating temperature range: – 40 to 85°C Ordering Information Part Name RNA52A10MMEL Package Type Package Code Package Abbreviation Taping Abbreviation (Quantity) MMPAK-8 pin PLSP0008JC-A MM EL (3,000 pcs / Reel) Application • • • • • • • Power-supply monitoring and resetting for microprocessors Power supply sequence control for microprocessors Desktop and laptop PCs PC peripheral devices such as printers Digital still cameras, digital video cameras, and PDAs Battery-driven products Wireless communications systems REJ03D0858-0500 Rev.5.00 Oct 06, 2008 Page 1 of 11 RNA52A10MM Pin Arrangement MR 1 8 VDD Vo1 2 7 Vi1 Vo2 3 6 Vi2 GND 4 5 CD Outline and Article Indication • RNA52A10MM Index band Marking R 0 1 YMW MMPAK–8 Lot No. REJ03D0858-0500 Rev.5.00 Oct 06, 2008 Page 2 of 11 Y : Year code (the last digit of year) M : Month code W : Week code RNA52A10MM Functional Block Diagram and Typical application Circuit VDD3 RL1 VDD1 RS1 Vo1 Reset circuit 1 Vi1 2 7 VDD4 RS2 RL2 VDD2 Vo2 Reset circuit 2 RS3 3 Vi2 RESET Microcomputer 6 RS4 VREF 1.0V 8 2M VDD 1 MR 5 CD GND 4 CD RD VDD0 C1 Notes: 1. Please refer to the following equations to set up reset-threshold voltages for power supplies VDD1 and VDD2, and to set up external voltage-dividing resistor pairs RS1 and RS2, and RS3 and RS4. (1) VDD1 reset-threshold voltage = VREF × (RS1+RS2)/RS2 (2) VDD2 reset-threshold voltage = VREF × (RS3+RS4)/RS4 Note that values must be set up within the following range: RS1, RS2, RS3, RS4 ≤ 50 kΩ See the following graph for the relationship between the reference voltage variation and the value selected for RS1, RS2, RS3 and RS4. 2. For capacitor C1, select a type which has excellent frequency characteristics. For stable operation, place it between the VDD pin and the GND pin and as close as is possible to the chip. 3. The value of capacitor C1 must suit the system environment in terms of the quality of the power supply and so forth. Reference Voltage Variation [%] Reference Voltage Variation vs. Parallel Resistance 5 4 3 2 1 0 -1 0.1 1 10 100 Parallel Resistance (RS1//RS2, RS3//RS4) [kΩ] REJ03D0858-0500 Rev.5.00 Oct 06, 2008 Page 3 of 11 1000 RNA52A10MM Timing Diagram 1. I/O Table MR Vi1, Vi2 Vo1 L ≤ VREF L ≥ (VREF+VHYS) H ≤ VREF L ≥ (VREF+VHYS) H H Vo2 L H (after TDLY0) L 2. Timing Chart (VREF+VHYS) VREF (VREF+VHYS) Vi1, Vi2 VDD0 MR VDD3 Vo1 TDLY0 TDLY0 TDLY0 VDD4 Vo2 Absolute Maximum Ratings Item Supply voltage (VDD) Input voltage (Vi1, Vi2, MR, CD) Output voltage (Vo1, Vo2) Output current (Vo1, Vo2) Symbol VDD VIN VOUT IOUT Continuous power dissipation (Ta = 25°C, in still air) Operating temperature Storage temperature Note: PD Ratings 6.0 –0.3 to VDD –0.3 to 6.0 30 145 Unit V V V mA mW TOPR TSTG –40 to 85 –55 to 125 °C °C Refer to the relevant characteristic curve on page 6 for continuous power dissipation. Recommended Operating Conditions Item Supply voltage (VDD) Input voltage (Vi1, Vi2, MR, CD) Output voltage (Vo1, Vo2) Output current (Vo1, Vo2) Operating temperature Symbol VDD VIN VOUT IOUT TOPR REJ03D0858-0500 Rev.5.00 Oct 06, 2008 Page 4 of 11 Min. 1.4 0 0 0 –40 Max. 5.5 VDD 5.5 15 85 Unit V V V mA °C RNA52A10MM Electrical Characteristics (Ta = 25°C, unless otherwise noted) Item Supply voltage Current consumption Reference voltage Reference voltage temperature coefficient (Reference value for design) Vi1, Vi2 input hysteresis voltage Vi1, Vi2 input current CD input threshold voltage Symbol Min. Typ. Max. Unit VDD 1.4 — 5.5 V IDD — 1.1 19 VREF 0.95 1.00 1.05 ∆VREF VREF ⋅∆Ta Test Conditions Test Circuit — µA VDD = 5.5 V V VDD = 3.3 V 2 Vi1 = V i2 = 5.5 V 1 ppm — ±100 — °C Ta = –40 to 85°C 2 VHYS 28.5 (VREF×3%) 60 (VREF×6%) 94.5 (VREF×9%) mV VDD = 3.3 V 2 IIN — 0.6 2.2 µA VDLY VDD×0.43 VDD×0.63 VDD×0.83 V — 0.05 0.15 V VDD = 5.5 V Vi1 = V i2 = 5.5 V VDD = 3.3 V Vi1 = V i2 = 1.2 V 3 4 VDD = 1.4V Vo1, Vo2 low-level output voltage Vi1 = V i2 = 0 V 5 IOL = 0.5 mA VOL VDD = 3.3V — 0.15 0.35 V Vi1 = V i2 = 0 V 6 IOL = 5 mA Vo1, Vo2 output leakage current Vo2 Note1 Delay time Incomplete discharge of capacity CD complete discharge of capacity CD ILK — — 100 nA TDLY 1.1 11 17 ms VDD = 3.3 V 7 8 Vi2 = 0 V→1.2 V TDLY0 7 11 17 ms Vo1 Rise response time TPLH — 30 300 µs Vo1, Vo2 fall response time TPHL — 30 800 µs CD = 0.3 µF, RD = 39 kΩ VDD = 3.3 V Vi1 = 0 V→1.2 V 8 9 VDD = 3.3 V Vi1 = Vi2 = 1.2 V→0 V 10 CD = 0.3 µF, RD = 39 kΩ MR low-level input voltage MR high-level input voltage VDD = VO1 = VO2 = 5.5 V Vi1 = V i2 = 1.2 V VIL VDD < 4.5V MR input pull-down resistance — — VDD×0.2 V VDD×0.75 — — V VDD×0.5 — — V 0.5 2 — MΩ VIH VDD ≥ 4.5V RMR VDD = 3.3 V Vi1 = V i2 = 1.2 V VDD = 3.3 V Vi1 = V i2 = 1.2 V VDD = 5.0 V Vi1 = V i2 = 1.2 V VDD = 5.5 V VMR = 5.5 V 11 11 12 13 Notes: 1. When capacitor CD is completely discharged and charging starts in the state that CD pin voltage is 0 V, the minimum value of delay time TDLY0 is 7 ms. However, when the discharging time is short and charging starts in the state that the voltage does not completely fall to 0 V, the minimum value of delay time TDLY is 1.1 ms. Then, the minimum value of Low time (reset time) of Vo2 is 1.1 ms as the delay time TDLY. Refer to Regulations for state of capacitor CD electrical discharge and delay time on page 10 for details. 2. Refer to the characteristic curves on page 6 for temperature dependence of the main characteristics. 3. Refer to pages 8 and 9 for the test circuits. REJ03D0858-0500 Rev.5.00 Oct 06, 2008 Page 5 of 11 RNA52A10MM Characteristic curves Current Dissipation IDD Current dissipation IDD [µA] Power Dissipation PD [mW] Heat decrease curve 200 150 100 50 0 0 25 50 75 100 125 150 20 15 10 VDD = 5.5 V, Vi1 = Vi2 = 5.5 V 5 0 -50 -25 Reference voltage VREF 1.02 VDD = 3.3 V 1.00 0.98 75 100 1.5 1.0 VDD = 5.5 V, Vi1 = Vi2 = 5.5 V 0.5 0.0 -50 -25 0 25 50 75 100 -50 Ambient Temperature Ta [°C] -25 50 75 100 VDD = 3.3 V, IOL = 5 mA 0.2 0.1 VDD = 1.4 V, IOL = 0.5 mA -25 0 25 50 75 Delay time TDLY0 [ms] 20 0.3 10 5 0 -50 100 Rise Response Time TPLH Fall Response Time TPHL [µs] VDD = 3.3 V, Vi1 = 0 to 1.2 V 10 25 50 75 Ambient Temperature Ta [°C] REJ03D0858-0500 Rev.5.00 Oct 06, 2008 Page 6 of 11 0 25 50 75 100 Fall Response Time TPHL 100 0 -25 Ambient Temperature Ta [°C] 1000 -25 VDD = 3.3 V, Vi2 = 0 to 1.2 V CD = 0.3 µF, RD = 39 kΩ 15 Ambient Temperature Ta [°C] 1 -50 25 Delay time TDLY0 0.4 0 -50 0 Ambient Temperature Ta [°C] Vo1, Vo2 Low-level output voltage VOL Low-level output voltage VOL [V] 50 Vi1, Vi2 Input Current IIN 0.96 Rise Response Time TPLH [ms] 25 2.0 1.04 Input Current IIN [µA] Reference voltage VREF [V] 0 Ambient Temperature Ta [°C] Ambient Temperature Ta [°C] 100 1000 VDD = 3.3 V, Vi1 = Vi2 = 1.2 to 0 V CD = 0.3 µF, RD = 39 KΩ 100 Vi2 10 Vi1 1 -50 -25 0 25 50 Ambient Temperature Ta [°C] 75 100 RNA52A10MM Pin Descriptions Pin No. Pin Name Function Manual reset input pin for reset circuit 2 (the circuit with the delay function). The MR signal is active high, so applying a high level to MR sets the Vo2 pin to the low level. 1 MR If Vi2 > VREF when the signal on the MR pin is changed back from the high to the low level, the Vo2 pin is returned from the low to the high level after a delay time TDLY0. This can be set as required. The MR pin is pulled down to the GND level via an internal 2-MΩ resistor . However, we recommend connection of the pin to the GND line when it is not in use. Reset signal output pin for reset circuit 1 (the circuit with no delay function). The output is open-drain. The recommended value of the pull-up resistor (RL1) is 3 k to 100 kΩ. When the voltage input on pin Vi1 falls to or 2 Vo1 below VREF, the signal output from the Vo1 pin is changed from the high to the low level. Since the characteristic includes hysteresis, the signal output from the Vo1 pin changes from the low to the high level when the voltage input on pin Vi1 rises to or above VREF+VHYS. Refer to the timing diagram on page 4 for details. Reset signal output pin for reset circuit 2 (the circuit with the delay function). The output is open-drain. The recommended value for the pull-up resistor (RL2 ) is 3 k to 100 kΩ. When the voltage input on pin Vi2 falls to or below VREF, the signal output from the Vo2 pin is changed from the high to the low level. Since the input 3 Vo2 characteristic includes hysteresis, the signal output from the Vo2 pin changes from the low to the high level when the voltage input on pin Vi2 rises to or above VREF+VHYS and the set delay time TDLY0 has elapsed. Refer to the timing diagram on page 4 and regulations for state of capacitor CD electrical discharge and delay time on page 10 for details. 4 GND GND pin Pin for connection to the resistor (RD) and capacitor (CD) for setting of the delay time, TDLY0. Refer to the Block Diagram and Typical Application Circuit on page 2 for an example of the connection. The relation by which the resistance and capacitance set up the delay time can be expressed as TDLY0 = 0.94 × CD × RD. Refer to this 5 CD formula in determining the values of resistance and capacitance. Resistance RD must use the one within the range of 1 k to 1 MΩ. Ensure that capacitor CD has a value no greater than 1.3 µF. The dependence of delay time TDLY0 on the values of external capacitor CD and external resistor RD is illustrated on page 10. To avoid errors due to noise input via the CD pin, this input includes a Schmitt-trigger inverter. Voltage input pin for reset circuit 2 (the circuit with the delay function). When the input voltage falls to or below VREF, the signal output from the Vo2 pin is changed to the low level. Since the input characteristic includes hysteresis, the signal output from the Vo2 pin is changed from the low to the high level after the voltage input on pin Vi2 has risen to or above VREF+VHYS and delay time TDLY has elapsed. The reset-threshold voltage is derived 6 Vi2 from the power-supply voltage VDD2 according to the division ratio set up by resistors RS3 and RS4 as described under the block diagram and typical application circuit on page 3. To avoid shifting of the reset detection voltage being shifted by input current via the Vi2 pin, select a value no greater than 25 kΩ for parallel resistors RS3 and RS4. Refer to the graph on page 3 for details. Besides, to avoid errors due to noise in power-supply voltage VDD2, select a capacitor with superior frequency characteristics and connect it between the Vi2 and GND pins. Voltage input pin for reset circuit 1 (the circuit without the delay function). When the input voltage falls to or below VREF, the signal output from the Vo1 pin is changed to the low level. Since the input characteristic includes hysteresis, the signal output from the Vo1 pin is changed from the low to the high level after the voltage input on pin Vi1 has risen to or above VREF+VHYS. The reset-threshold voltage is derived from the power-supply voltage 7 Vi1 VDD1 according to the division ratio set up by resistors RS1 and RS2 as described under the block diagram and typical application circuit on page 3. To avoid shifting of the reset detection voltage being shifted by input current via the Vi1 pin, select a value no greater than 25 kΩ for parallel resistors RS1 and RS2. Refer to the graph on page 3 for details. Besides, to avoid errors due to noise in power-supply voltage VDD1, select a capacitor with superior frequency characteristics and connect it between the Vi2 and GND pins. Power-supply pin for the chip. For stable operation, select a capacitor with superior frequency characteristics 8 VDD and connect it between the VDD and GND pins and as close to the chip as possible. When selecting the value of the capacitor, consider aspects of the system environment such as the quality of the power supply. Refer to the block diagram and typical application circuit on page 3 for details. REJ03D0858-0500 Rev.5.00 Oct 06, 2008 Page 7 of 11 RNA52A10MM Test Circuits 3 Vo2 Vi2 6 4 GND CD 5 100 k 100 k 2 Vo1 Vi1 7 3 Vo2 Vi2 6 4 GND CD 5 V Vi1 7 A 3 Vo2 Vi2 6 A 4 GND CD 5 1 MR VDD 8 2 Vo1 Vi1 7 3 Vo2 Vi2 6 4 GND CD 5 1.2 V 100 k 100 k 2 Vo1 5.5 V VDD 8 3.3 V 39 k 1 MR 0.3 µ 5.5 V 100 k 4 100 k 3 VDD 8 39 k Vi1 7 1 MR 0.3 µ 2 Vo1 3.3 V VDD 8 5.5 V 1 MR 39 k A 0.3 µ 5.5 V 100 k 2 100 k 1 V 5 mA V 7 VDD 8 2 Vo1 Vi1 7 3 Vo2 Vi2 6 4 GND CD 5 1.2 V 1 MR 39 k A 0.3 µ 5.5 V A REJ03D0858-0500 Rev.5.00 Oct 06, 2008 Page 8 of 11 V 2 Vo1 Vi1 7 3 Vo2 Vi2 6 4 GND CD 5 3.3 V CD 5 VDD 8 0V 4 GND V 1 MR 0.3 µ Vi2 6 5 mA 3 Vo2 1.4 V Vi1 7 39k 2 Vo1 0V 0.5 mA VDD 8 0.3 µ 0.5 mA V 1 MR 39 k 6 5 RNA52A10MM Test Circuits (cont.) 2 Vo1 Vi1 7 3 Vo2 Vi2 6 4 GND CD 5 0V CD 5 VDD 8 39 k 4 GND 1 MR 0.3 µ Vi2 6 100 k 3 Vo2 100 k Vi1 7 3.3 V 2 Vo1 0V VDD 8 39 k 1 MR 0.3 µ 3.3 V 100 k 9 100 k 8 3.3 V 3.3 V 1.06 V Vi2 1.06 V Vi1 0V 0V TDLY0 Vo2 TPLH 3.3 V Vo1 1.65 V 3.3 V 1.65 V 0V 0V CD 5 3.3 V 2 Vo1 Vi1 7 3 Vo2 Vi2 6 4 GND CD 5 V 1.0 V Vi1, Vi2 VDD 8 3.3 V 4 GND 1 MR 1.2 V Vi2 6 39 k 3 Vo2 0.3 µ Vi1 7 100 k 2 Vo1 100 k VDD 8 39 k 1 MR 0.3 µ 3.3 V 100 k 11 100 k 10 0V 3.3 V Vo1, Vo2 TPHL 1.65V 0V 12 CD 5 REJ03D0858-0500 Rev.5.00 Oct 06, 2008 Page 9 of 11 Vi1 7 3 Vo2 Vi2 6 4 GND CD 5 5.5 V 2 Vo1 39 k VDD 8 A 1.2 V 4 GND V 1 MR 0.3 µ Vi2 6 100 k 100 k 3 Vo2 5.5 V Vi1 7 5.0 V 2 Vo1 1.2 V VDD 8 0.3 µ 1 MR 39 k 100 k 100 k 13 RNA52A10MM Regulations for state of capacitor CD electrical discharge and delay time (1) Operation to MR input signal MR Vth+ Capacitor complete electrical discharge CD Vth- Vth+ VthCapacitor incomplete electrical discharge 0V TDLY TDLY0 Vo2 (2) Operation to Vi2 input signal Vi2 VREF+VHYS VREF VREF+VHYS VREF Vth+ Capacitor complete electrical discharge CD Vth- Vth+ VthCapacitor incomplete electrical discharge TDLY Vo2 REJ03D0858-0500 Rev.5.00 Oct 06, 2008 Page 10 of 11 0V TDLY0 RNA52A10MM Relation between Delay Time TDLY and External Component Values CD, RD Delay time TDLY0 [ms] 1000 100 .0 CD =1 µF 3µ CD F .3 =0 10 CD .1 =0 µF 33 CD .0 =0 CD µF 1µ F .0 =0 1 1 10 100 1000 Resistance RD [kΩ] Package Dimensions Package Name MMPAK-8 JEITA Package Code P-LSOP8-2.8 x 2.95 - 0.65 RENESAS Code PLSP0008JC-A Previous Code Unit: mm 0.13 +0.12 -0.03 2.8 ± 0.1 4.0 ± 0.3 2.95 ± 0.2 MASS[Typ.] 0.02 g 0.6 0 to 0.1 0.65 0.1 M 0.3 1.1 ± 0.1 1.95 0.1 REJ03D0858-0500 Rev.5.00 Oct 06, 2008 Page 11 of 11 0.2 +0.1 -0.05 Sales Strategic Planning Div. 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