M51955AFP Renesas Electronics Corporation., M51955AFP Datasheet

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M51955AFP

Manufacturer Part Number
M51955AFP
Description
Manufacturer
Renesas Electronics Corporation.
Datasheet

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M51955A,B/M51956A,B
Voltage Detecting, System Resetting IC Series
Description
M51955A,B/M51956A,B are semiconductor integrated circuits for resetting of all types of logic circuits such as CPUs,
and has the feature of setting the detection voltage by adding external resistance.
They include a built-in delay circuit to provide a retardation time (200 µs Typ).
They fined extensive applications, including battery checking circuit, level detecting circuit and waveform shaping
circuit.
Features
• Few external parts
• Low threshold operating voltage (Supply voltage to keep low-state at low supply voltage):
• Wide supply voltage range: 2 V to 17 V
• Wide application range
Application
• Reset circuit of Pch, Nch, CMOS, microcomputer, CPU and MCU, Reset of logic circuit, Battery check circuit,
Recommended Operating Condition
• Supply voltage range: 2 V to 17 V
Pin Arrangement
M51955AL/BL
M51956AL/BL
REJ03D0777-0300 Rev.3.00 Sep 18, 2007
Page 1 of 11
Outline: 5P5T
(Top view)
0.6 V (Typ) at R
switching circuit back-up voltage, level detecting circuit, waveform shaping circuit, delay waveform generating
circuit, DC/DC converter, over voltage protection circuit
5
4
3
2
1
Output
NC
GND
Input
Power-supply
Outline: PRSP0008DE-C (recommend)
L
= 22 kΩ
PRSP0008DA-A (8P2S-A) (not recommend for new design)
Input
GND
NC: No Connection
NC
NC
1
2
3
4
M51955AFP/BFP
M51956BFP
(Top view)
8
7
6
5
NC
Power-supply
Output
NC
Input
GND
NC: No Connection
NC
NC
Outline: PRSP0008DA-A (8P2S-A)
1
2
3
4
M51956AFP
(Top view)
REJ03D0777-0300
8
7
6
5
Sep 18, 2007
NC
Power-supply
Output
NC
Rev.3.00

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M51955AFP Summary of contents

Page 1

... NC Input 3 GND NC 2 Input GND 1 Power-supply (Top view) NC: No Connection Outline: 5P5T Outline: PRSP0008DE-C (recommend) PRSP0008DA-A (8P2S-A) (not recommend for new design) REJ03D0777-0300 Rev.3.00 Sep 18, 2007 Page M51955AFP/BFP M51956BFP Power-supply 3 6 Output (Top view) REJ03D0777-0300 Rev.3.00 Sep 18, 2007 ...

Page 2

M51955A,B/M51956A,B Block Diagram M51955A, B Power- A: Built-in Load supply B: Open Collector – Input – 1.25V Delay capacitor GND Operating Waveform M51955A, B 1.25V ≈ 200µs REJ03D0777-0300 Rev.3.00 Sep 18, 2007 Page 2 ...

Page 3

M51955A,B/M51956A,B Absolute Maximum Ratings Item Symbol Supply voltage V CC Output sink current Isink Output voltage V O Power dissipation Pd Thermal derating Kθ Operating temperature Topr Storage temperature Tstg Input voltage range V IN Electrical Characteristics • “L” reset ...

Page 4

M51955A,B/M51956A,B Typical Characteristics Thermal Derating (Maximum Rating) 500 5-pin SIP 8-pin SOP 400 (PRSP0008DE-C) : recommend 300 200 100 Ambient Temperature Ta (°C) Detection Voltage vs. Supply Voltage (Input voltage detection series) 1.28 1.27 1.26 1.25 ...

Page 5

M51955A,B/M51956A,B Output Saturation Voltage vs. Output Sink Current 0.3 Supply voltage detecting "L" reset type : Except above mentioned : 0.2 0 Output Sink Current Isink (mA) ...

Page 6

M51955A,B/M51956A,B Example of Application Circuit Reset Circuit of M5195xx Series R 1 Input R 2 Notes: 1. When the detecting supply voltage is 4.25 V, M51951, M51952, M51953 and M51954 are used. In this case, R and R are not ...

Page 7

M51955A,B/M51956A,B Notice for use About the Power Supply Line 1. About bypass capacitor Because the ripple and the spike of the high frequency noise and the low frequency are superimposed to the power supply line necessary to remove ...

Page 8

M51955A,B/M51956A,B Independent Input M51955 Vin M51956 GND Example 1. Independent power supply system Please do enough verifying about transition characteristic of V and Calculation of detecting voltage Detecting voltage Vs can be ...

Page 9

M51955A,B/M51956A,B Setting of Output Load Resistance (M51955B/M51956B) High level output voltage can be set without depending on the power-supply voltage because the output terminal is an open collector type. However, please guard the following notes. 1. Please set it in ...

Page 10

M51955A,B/M51956A,B Package Dimensions 5P5T EIAJ Package Code JEDEC Code – SIP5-P-240-2. SEATING PLANE JEITA Package Code RENESAS Code P-SOP8-4.4x4.85-1.27 PRSP0008DE Index mark REJ03D0777-0300 Rev.3.00 Sep 18, 2007 Page Weight(g) ...

Page 11

M51955A,B/M51956A,B JEITA Package Code RENESAS Code P-SOP8-4.4x5-1.27 PRSP0008DA Index mark * REJ03D0777-0300 Rev.3.00 Sep 18, 2007 Page Previous Code MASS[Typ.] 8P2S-A 0.07g NOTE) 1. DIMENSIONS "*1" ...

Page 12

Notes: 1. This document is provided for reference purposes only so that Renesas customers may select the appropriate Renesas products for their use. Renesas neither makes warranties or representations with respect to the accuracy or completeness of the information contained ...

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