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Data Sheet PT7M7803/7809-7812/7823-7825/7342-7345 P Supervisor Circuits Discription
The PT7M7xxx family microprocessor (P) supervisory circuits are targeted to improve reliability and accuracy of power-supply circuitry in P systems. These devices reduce the complexity and number of components required to monitor power-supply and battery functions. The main functions are: 1. Asserting reset output during power-up, power-down and brownout conditions for P system; 2. Detecting power failure or low-battery conditions with a 1.25V threshold detector; 3. Watchdog functions; 4. Manual reset.
Features
* Precision supply-voltage monitor - 4.63V (PT7M7xxxL) - 4.38V (PT7M7xxxM) - 3.08V (PT7M7xxxT) - 2.93V (PT7M7xxxS) - 2.63V (PT7M7xxxR) - 2.32V (PT7M7xxxZ) - 2.20V (PT7M7xxxY) - 4.00V (PT7M7xxxJ) * 200ms reset pulse width * Debounced CMOS-compatible manual-reset input (7811, 7812, 7823, 7825, 7342-7344) * Reset Output Signal for Watchdog and Power Abnormal, Manual Reset * Reset Push-Pull output (PT7M7809,7811,7823, 7824,7825,7342,7345) * Reset Open-Drain output (PT7M7803/7343) * Voltage monitor for power-fail or low battery warning * Guaranteed RESET/RESET valid at VCC = 1.0V
Applications
* Power-supply circuitry in P systems
Ordering Information
Note: lead free package is available by adding E at the end of each part no. For example: PT7M7803XTE for SOT23-3 lead free package.
Suffix: X -- Monitored Voltage
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Data Sheet PT7M7803/7809-7812/7823-7825/7342-7345 P Supervisor Circuits
Function Comparison
Block Diagram
Block Diagram
WDI
Watchdog Transition Detector V cc
Watchdog Timer
Timebase for Reset & Watchdog
MR Reset Generator Vcc RESET (RESET)
V RST PFI 1.25V PFO
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Data Sheet PT7M7803/7809-7812/7823-7825/7342-7345 P Supervisor Circuits
Marking Information
C od e 12 Descr ip t ion Part Number Year Work Week
1
2
3
4
3 4
Part Number Code
Code 1 2 AA AB AC AD AE AF AG sd AH AI AJ AK AL AM AN se AO AP AQ AR AS AT AU sf AV AW AX AY AZ BA BB sg Part No. PT7M7809L PT7M7809M PT7M7809T PT7M7809S PT7M7809R PT7M7809Z PT7M7809Y PT7M7809J PT7M7810L PT7M7810M PT7M7810T PT7M7810S PT7M7810R PT7M7810Z PT7M7810Y PT7M7810J PT7M7811L PT7M7811M PT7M7811T PT7M7811S PT7M7811R PT7M7811Z PT7M7811Y PT7M7811J PT7M7812L PT7M7812M PT7M7812T PT7M7812S PT7M7812R PT7M7812Z PT7M7812Y PT7M7812J Code 1 2 BC BD BE BF BG BH BI jm BJ BK BL BM BN BO BP sh BQ BR BS BT BU BV BW si BX BY BZ CA CB CC CD sj Part No. PT7M7803L PT7M7803M PT7M7803T PT7M7803S PT7M7803R PT7M7803Z PT7M7803Y PT7M7803J PT7M7823L PT7M7823M PT7M7823T PT7M7823S PT7M7823R PT7M7823Z PT7M7823Y PT7M7823J PT7M7824L PT7M7824M PT7M7824T PT7M7824S PT7M7824R PT7M7824Z PT7M7824Y PT7M7824J PT7M7825L PT7M7825M PT7M7825T PT7M7825S PT7M7825R PT7M7825Z PT7M7825Y PT7M7825J Code 1 2 CE CF CG CH CI CJ CK sk CL CM CN CO CP CQ CR sl CS CT CU CV CW CX CY sm CZ DA DB DC DD DE DF sn Part No. PT7M7342L PT7M7342M PT7M7342T PT7M7342S PT7M7342R PT7M7342Z PT7M7342Y PT7M7342J PT7M7343L PT7M7343M PT7M7343T PT7M7343S PT7M7343R PT7M7343Z PT7M7343Y PT7M7343J PT7M7344L PT7M7344M PT7M7344T PT7M7344S PT7M7344R PT7M7344Z PT7M7344Y PT7M7344J PT7M7345L PT7M7345M PT7M7345T PT7M7345S PT7M7345R PT7M7345Z PT7M7345Y PT7M7345J
Note: lead free package is available by adding line above the first code. For example: Part Number code of PT7M7809LE is AA.
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Data Sheet PT7M7803/7809-7812/7823-7825/7342-7345 P Supervisor Circuits
Pin Information
Pin Configuration
SOT23-3 PT7M7803 PT7M7809
1 GND 1
SOT143 PT7M7810
GND 1
PT7M7811
GND VCC 4 1
PT7M7812
GND VCC 4
VCC
3
VCC
3
2
RESET
2
RESET
2
RESET
MR
3
2
RESET
MR
3
SOT23-5 PT7M7811
1 GND VCC 5 1
PT7M7812
GND VCC 5
2
NC
2
NC
3
RESET
MR
4
3
RESET
MR
4
PT7M7823
1 RESET VCC 5 1
PT7M7824
RESET VCC 5
PT7M7825
1 RESET VCC 5
2
GND
2
GND
2
GND
3
MR
WDI
4
3
RESET
WDI
4
3
RESET
MR
4
SOT23-6 PT7M7342 PT7M7343
1 VCC RESET 6 1
PT7M7344
VCC RESET 6 1
PT7M7345
VCC RESET 6
2
GND
MR
5
2
GND
MR
5
2
GND
RESET
5
3
PFI
PFO
4
3
PFI
PFO
4
3
PFI
PFO
4
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Data Sheet PT7M7803/7809-7812/7823-7825/7342-7345 P Supervisor Circuits
Pin Description
Pin Na me MR Type I De s cr ipt ion M a nua l-R e s e t : (CM OS). Active low. Pull low to force a reset. Reset remains asserted for the duration of the Reset Timeout Period after MR transitions from low to high. Leave unconnected or connected to VCC if not used. Powe r Supply: Reset is asserted when VCC drops below the Reset Threshold Voltage (VRST). Reset remains asserted until VCC rises above VRST and keep asserted for the duration of the Reset Timeout Period (tRS) once VCC rises above VRST. Gr ound R e fe r e nce for all signals Powe r-Fa il Volt a ge M onit or I nput . When PFI Vcc GND PFI PFO
Power Ground I O
WDI
I
RESET RESET NC
O O -
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Data Sheet PT7M7803/7809-7812/7823-7825/7342-7345 P Supervisor Circuits
Pad Identification
PT7M7803, PT7M7809
No. Symbol 1 GND 2 RESET 3 Vcc 4 NC
Location (X,Y) (97.40, 414.60) (557.40, 450.90 ) (95.30, 210.30) (557.40, 210.30)
Note: 1)Wafer Size: 6 inch 2)Wafer Thickness: 675um 3)Chip Size: 770um*780um (include scribe line width 100um*100um) 4)PAD Location: Refer above diagram and table. PAD size75um*75um 5)PAD discription refer to Pin discription
PT7M7810
No. Symbol 1 GND 2 RESET 3 Vcc 4 NC
Location (X,Y) (97.40, 414.60) (557.40, 450.90 ) (95.30, 210.30) (557.40, 210.30)
Note: 1)Wafer Size: 6 inch 2)Wafer Thickness: 675um 3)Chip Size: 770um*780um (include scribe line width 100um*100um) 4)PAD Location: Refer above diagram and table. PAD size75um*75um 5)PAD discription refer to Pin discription
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Data Sheet PT7M7803/7809-7812/7823-7825/7342-7345 P Supervisor Circuits
PT7M7811
No. Symbol 1 GND 3 RESET 4 MR 5 Vcc
Location (X,Y) (97.40, 414.60) (557.40, 450.90 ) (95.30, 210.30) (557.40, 210.30)
Note: 1)Wafer Size: 6 inch 2)Wafer Thickness: 675um 3)Chip Size: 770um*780um (include scribe line width 100um*100um) 4)PAD Location: Refer above diagram and table. PAD size75um*75um 5)PAD discription refer to Pin discription
PT7M7812
No. Symbol Location (X,Y) 1 GND (97.40, 414.60) 3 RESET (557.40, 450.90 ) 4 MR (95.30, 210.30) 5 Vcc (557.40, 210.30)
Note: 1)Wafer Size: 6 inch 2)Wafer Thickness: 675um 3)Chip Size: 770um*780um (include scribe line width 100um*100um) 4)PAD Location: Refer above diagram and table. PAD size75um*75um 5)PAD discription refer to Pin discription
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Data Sheet PT7M7803/7809-7812/7823-7825/7342-7345 P Supervisor Circuits
PT7M7823
No. 1 2 3 4 5 6 7 8 9
Symbol RESET GND MR WDI Vcc NC NC NC NC
Location (X,Y) (151.05, 326.25) (815.60, 381.55) (815.60, 579.75) (815.60, 183.35) (151.05, 227.05) (151.05, 128.05) (626.80, 622.00) (815.60, 579.75) (815.60, 282.55)
Note: 1)Wafer Size: 6 inch 2)Wafer Thickness: 675um 3)Chip Size: 1060um*810um (include scribe line width 100um*100um) 4)PAD Location: Refer above diagram and table.PAD Size75um*75um 5)PAD discription refer to Pin discription
PT7M7824
No. 1 2 3 4 5 6 7 8 9
Symbol RESET GND RESET WDI Vcc NC NC NC NC
Location (X,Y) (151.05, 326.25) (815.60, 381.55) (815.60, 579.75) (815.60, 183.35) (151.05, 227.05) (151.05, 128.05) (626.80, 622.00) (815.60, 579.75) (815.60, 282.55)
Note: 1)Wafer Size: 6 inch 2)Wafer Thickness: 675um 3)Chip Size: 1060um*810um (include scribe line width 100um*100um) 4)PAD Location: Refer above diagram and table.PAD Size75um*75um 5)PAD discription refer to Pin discription
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Data Sheet PT7M7803/7809-7812/7823-7825/7342-7345 P Supervisor Circuits
PT7M7825
No. 1 2 3 4 5 6 7 8 9
Symbol RESET GND RESET MR Vcc NC NC NC NC
Location (X,Y) (151.05, 326.25) (815.60, 381.55) (815.60, 579.75) (815.60, 183.35) (151.05, 227.05) (151.05, 128.05) (626.80, 622.00) (815.60, 579.75) (815.60, 282.55)
Note: 1)Wafer Size: 6 inch 2)Wafer Thickness: 675um 3)Chip Size: 1060um*810um (include scribe line width 100um*100um) 4)PAD Location: Refer above diagram and table.PAD Size75um*75um 5)PAD discription refer to Pin discription
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Data Sheet PT7M7803/7809-7812/7823-7825/7342-7345 P Supervisor Circuits
Watchdog Timer
The PT7M7xxx watchdog circuit monitors the P activity. If the P does not toggle the watch-dog input (WDI) within 1.6s, reset asserts. As long as reset is asserted or the WDI input is toggled, the watchdog timer will stay clear and will not count. As soon as reset is released, the timer will start counting. WDI input pulses as short as 50ns can be detected. Disable the watchdog function by leaving WDI unconnected or by three-stating driver connected to WDI.
Functional Description
Reset Output
A microprocessor (P) reset input starts the P in a known state. Whenever the P is in an unknown state, it should be held in reset. The supervisory circuits assert reset during powerup and prevent code execution errors during power-down or brownout conditions. On power-up, once Vcc reaches about 1.0V, RESET is a guaranteed logic low of 0.4V or less. As Vcc rises, RESET stays low. When Vcc rises above the reset threshold, an internal timer releases RESET after about 200ms. RESET pulses low whenever Vcc drops below the reset threshold, i.e. brownout condition. If brownout occurs in the middle of a previously initiated reset pulse, the pulse continues for at least another 200ms. On powerdown, once Vcc falls below the reset threshold, RESET stays low and is guaranteed to be 0.4V or less until Vcc drops below 1.0V. Watchdog Timing Diagram shows the timing relationship. The active-high RESET output is simply the inverse of the RESET output, and is guaranteed to be valid with Vcc down to 1.0V. Typical Application Circuit
Manual Reset
The manual-reset input (MR) allows reset to be triggered by a push button switch. MR has an internal pullup resistor, so it can be left open when not used.
Power-Fail Comparator
The power-fail comparator can be used for various purposes because its output and noninverting input are not internally connected. The inverting input is internally connected to a 1.25V reference.
IN
DC Linear Regulator P Vcc Vcc RESET P Supervisory Circuit PFI WDI PFO RESET I/O Line Interrupt
MR
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Data Sheet PT7M7803/7809-7812/7823-7825/7342-7345 P Supervisor Circuits
Detailed Specifications
Absolute Maximum Ratings
Storage Temperature ......................................................... -65oC to +150oC Ambient Temperature with Power Applied ...........................-40oC to +85oC Supply Voltage to Ground Potential (Vcc to GND) ............... -0.3V to +7.0V DC Input Voltage (All inputs except Vcc and GND) ......... -0.3V to VCC+0.3V DC Output Current (All outputs) ..................................................... 20mA Power Dissipation ......................................................................... 320mW (Depend on package) Note: Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
Recommended Operation Condition
DC Electrical Characteristics
Sym Description Supply Voltage for 7xxxL/M/J Supply Voltage for 7xxxT/S VCC VIH VIL TA Supply Voltage for 7xxxR/Z/Y Input High Voltage Input Low Voltage Operating Temperature -40 Test Conditions Min 4.5 3.0 2.7 0.7VCC 0.3VCC 85 Typ 5.0 3.3 3.0 Max 5.5 5.5 5.5 Unit V V V V V
O
C
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Data Sheet PT7M7803/7809-7812/7823-7825/7342-7345 P Supervisor Circuits
DC Electrical Characteristics
(Vcc=VRN+5% to 5.5V, TA= -40~85oC, unless otherwise noted)
Symbol VCC ICC VIH VIL Description Operating Voltage Range Supply Current Input High Voltage Input Low Voltage Vcc = 5V, No load Pin: MR, WDI Pin: MR, WDI PT7M7xxx(except 7809R/M) TA= 25C PT7M7809R PT7M7809M PT7M7xxxL PT7M7xxxM(except 7809M) PT7M7809M PT7M7xxxT PT7M7xxxJ PT7M7xxxS PT7M7xxxR PT7M7xxxZ PT7M7xxxY PT7M7823/24/25L/M/T/S PT7M7823/24/25R Test Conditions 7803/09/10/11/12 7823/24/25, 73xx Min 1 0.7xVcc VRN-1.5% VRN-1.0% 4.273 4.514 4.271 4.221 3.003 3.890 2.857 2.564 2.262 2.145 Vcc-1.5 0.8xVcc 0.8xVcc 0.8xVcc Vcc-1.5 0.8xVcc 1.2 -20 10 35 60 Typ 6 13 VRN VRN 4.330 4.63 4.380 4.330 3.08 4.00 2.93 2.63 2.32 2.20 12 4 50 1.25 120 -15 20 52 Max 5.5 18 36 0.3xVcc VRN+1.5% VRN+1.0% 4.386 4.746 4.490 4.438 3.157 4.10 3.003 2.696 2.378 2.255 0.4 0.3 0.3 1 1.3 25 160 800 400 30 75 Unit V A V V
VRST
Reset Threshold Voltage(Note1) TA= -40~85C
V
VRTH
Reset Threshold Hysteresis(Note 1)
VOH
Output High Voltage(Except PT7M7823/24/25) Output High Voltage(PT7M7823/24/25)
VOL ILKG VPFT IPFI IWDI Isource
Output Low Voltage Open-Drain Output Leakage Current PFI Input Threshold PFI Input Leakage Current Average WDI Input Current (Note 2) RESET Output Short-Circuit Current (only for PT7M7823/24/25) MR pull-up resistor (internal)
Others Vcc 4.5V Isource=800A Vcc 2.7V Isource=500A Vcc 1.8V Isource=150A Vcc 1.0V Isource=4A PT7M7823/24/25L/M, Vcc = VRST Max, ISOURCE=120uA PT7M7823/24/25T/S/R, Vcc=VRST Max, ISOURCE=30uA Vcc 4.5V Isink=3.2mA Vcc 2.7V Isink=1.2mA Vcc 1.0V Isink=100A VCC > VTH(MAX) for PT7M7803 and PT7M7343 VPFI varies from 1.5V and 1.0V WDI connected to VCC: 5.5V WDI connected to GND PT7M7823/24/25L/M, RESET=0V, Vcc=5.5V PT7M7823/24/25T/S/R, RESET=0V, Vcc=3.6V PT7M7811/7812 PT7M7823/7824/7825 PT7M7342/7343/7344
Vcc varies between VRN5%
mV
V
V
A V nA A A
r
k
* Valid for both RESET and RESET. VRST is voltage threshols when VCC falls from high to low. VRN is nominal reset threshold voltage. ** WDI is internally serviced within the watchdog period if WDI is left unconnected.
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Data Sheet PT7M7803/7809-7812/7823-7825/7342-7345 P Supervisor Circuits
AC Electrical Characteristics
AC Electrical Characteristics
Sym tRS tWD tMR t tWP Description Reset Pulse Width Watchdog Timeout Period MR Pulse Width MR to RESET Delay WDI Pulse Width V = 5.0V 50 Test Conditions MR from low to High, TA=25C WDI and MR tied to VCC, VCC > VRN + 5% TA=25C Min 140 0.9 1 250 Typ 200 1.6 Max 400 2.25 Units ms s s ns ns
Watchdog Timing Diagram
VCC
V RST
VRST tRS tWD tRS tRS
RESET
RESET tWP tMD
WDI tMR MR
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Data Sheet PT7M7803/7809-7812/7823-7825/7342-7345 P Supervisor Circuits
Mechanical Information
SOT23-3
1.80 2.00 0.45 0.60 1.20 1.40 2.20 2.64 0.55
0.38 0.51
0.95
0-8
o
2.80 3.04 0.90 1.12
0.09 0.18
0.013 0.102 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS Note: 1) Controlling dimensions in millimeters.
2) Ref: JEDEC TO-236AB 2) Ref: JDDEC TO-236AB
SOT23-5
1.90
1.50 2.50 1.70 3.10
0.35 0.80
0-10o 0.30 0.50 0.95 2.80 3.00 0.90 1.10 0.01 0.13 X.XX X.XX DENOTES DIMENSIONS IN MILLIMETERS Note: 1) Controlling dimensions in millimeters. 2) Ref: JDDEC MO-178AA Ref: JEDEC MO-178AA 0.20 0.55 0.09 0.20
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Data Sheet PT7M7803/7809-7812/7823-7825/7342-7345 P Supervisor Circuits
SOT23-6
1.90
1.50 1.70
2.50 3.10
0.3 5
0.30 0.50 2.80 3.10
0.95
0-10
o
0.20 0.55 0.90 1.10 0.01 0.13
0.09 0.20
X.XX X.XX
Note:
DENOTES DIMENSIONS IN MILLIMETERS
1) Controlling dimensions in millimeters. 2) Ref: JDDEC MO-178AB 2) Ref: JEDEC MO-178AB
PT0109L(04/07)
15
Ver:11
www.DataSheet.in
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Data Sheet PT7M7803/7809-7812/7823-7825/7342-7345 P Supervisor Circuits
SOT143
2.80 3.04 1.92 0.45 0.60
0.085 0.180
0.55
2.10 2.64
1.20 1.40
0.20
0.76 0.94
0.37 0.51
0.013 0.10
0.89 1.12
X.XX X.XX
DENOTES DIMENSIONS IN MILLIMETERS
Note:
1) Controlling dimensions in millimeters. 2) Dimensions are inclusive of plating.
PT0109L(04/07)
16
Ver:11
www.DataSheet.in
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Data Sheet PT7M7803/7809-7812/7823-7825/7342-7345 P Supervisor Circuits
Notes
Pericom Technology Inc.
Email: support@pti.com.cn China: Asia Pacific: U.S.A.: Web-Site: www.pti.com.cn, www.pti-ic.com No. 20 Building, 3/F, 481 Guiping Road, Shanghai, 200233, China Tel: (86)-21-6485 0576 Fax: (86)-21-6485 2181 Unit 1517, 15/F, Chevalier Commercial Centre, 8 Wang Hoi Rd, Kowloon Bay, Hongkong Tel: (852)-2243 3660 Fax: (852)- 2243 3667 3545 North First Street, San Jose, California 95134, USA Tel: (1)-408-435 0800 Fax: (1)-408-435 1100
Pericom Technology Incorporation reserves the right to make changes to its products or specifications at any time, without notice, in order to improve design or performance and to supply the best possible product. Pericom Technology does not assume any responsibility for use of any circuitry described other than the circuitry embodied in Pericom Technology product. The company makes no representations that circuitry described herein is free from patent infringement or other rights, of Pericom Technology Incorporation. PT0109L(04/07)
17
Ver:11
www.DataSheet.in

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