MB3793-27A
Power Voltage Monitoring IC with
Watchdog Timer
Description
The MB3793 is an integrated circuit to monitor power voltage; it incorporates a watchdog timer.
A reset signal is output when the power is cut or falls abruptly. When the power recovers normally after resetting, a power-on reset
signal is output to microprocessor units (MPUs). An internal watchdog timer with two inputs for system operation diagnosis can
provide a fall-safe function for various application systems.
Features
Precise detection of power voltage fall: 2.5%
Detection voltage with hysteresis
Low power dispersion: ICC = 31 A (reference)
Internal dual-input watchdog timer
Watchdog-timer halt function (by inhibition pin)
Independently-set watchdog and reset times
Three types of packages (SOP-8pin : 2 types)
Application
Arcade Amusement etc.
Cypress Semiconductor Corporation
Document Number: 002-08550 Rev. *A
•
198 Champion Court
•
San Jose, CA 95134-1709
•
408-943-2600
Revised April 1, 2016
MB3793-27A
Contents
Pin Assignment ................................................................ 3
Pin Description ................................................................. 3
Block Diagram .................................................................. 4
Block Description ............................................................. 5
Absolute Maximum Ratings ............................................ 5
Recommended Operating Conditions ............................ 6
Electrical Characteristics ................................................. 7
DC Characteristics .............................................................. 7
AC Characteristics .............................................................. 8
Diagram ............................................................................. 9
Basic operation (Positive clock pulse) ............................... 9
Basic operation (Negative clock pulse) ........................... 10
Single-clock input monitoring (Positive clock pulse) ......... 11
Inhibition operation (Positive clock pulse) ........................ 12
Clock pulse input supplementation
(Positive clock pulse) ........................................................ 13
Operation Sequence ....................................................... 14
Positive clock pulse input ................................................. 14
Negative clock pulse input ................................................ 14
Document Number: 002-08550 Rev. *A
Clock monitoring ............................................................... 14
Description of Operations ................................................. 14
Typical Characteristics .................................................. 16
Application Example ...................................................... 20
Supply voltage monitor and watchdog timer
(1-clock monitor) ............................................................... 20
Supply voltage monitor and watchdog timer stop ............. 21
Typical Application ......................................................... 22
Notes On Use .................................................................. 23
Ordering Information ...................................................... 23
RoHS Compliance Information of
Lead (Pb) Free version ................................................... 23
Marking Format (Lead Free version) ........................... 24
Labeling Sample (Lead free version) ........................... 25
MB3793-27APF-❏❏❏E1, MB3793-27APNF-❏❏❏E1
Recommended Conditions Of Moisture
Sensitivity Level ............................................................. 26
Package Dimensions ...................................................... 28
Major Changes ................................................................ 30
Page 2 of 30
MB3793-27A
1. Pin Assignment
(TOP VIEW)
RESET
1
8
CK1
CTW
2
7
CK2
CTP
3
6
INH
GND
4
5
VCC
(FPT-8P-M01)
(FPT-8P-M02)
2. Pin Description
Pin no.
Symbol
1
RESET
2
Descriptions
Pin no.
Symbol
Outputs reset pin
5
VCC
Power supply pin
CTW
Watchdog timer monitor time setting pin
6
INH
Inhibit pin
3
CTP
Power-on reset hold time setting pin
7
CK2
Inputs clock 2 pin
4
GND
Ground pin
8
CK1
Inputs clock 1 pin
Document Number: 002-08550 Rev. *A
Descriptions
Page 3 of 30
MB3793-27A
3. Block Diagram
To VCC of all blocks
. 3 μA
I1 =
.
5 VCC
I2 .=. 30 μA
CTP 3
.
R1 =
.
295 kΩ
Logic circuit
RESET 1
Output circuit
INH 6
Comp.S
CTW 2
Watchdog
timer
Reference
voltage
generator
−
VS
+
Pulse generator 1
. 1.24 V
VREF =
.
CK1 8
R2 .=.
240 kΩ
Pulse generator 2
CK2 7
Document Number: 002-08550 Rev. *A
To GND of
all blocks
4 GND
Page 4 of 30
MB3793-27A
4. Block Description
1. Comp. S
Comp. S is a comparator with hysteresis to compare the reference voltage with a voltage (VS) that is the result of dividing the power
voltage (VCC) by resistors 1 and 2. When VS falls below 1.24 V, a reset signal is output.
This function enables the MB3793 to detect an abnormality within 1 s when the power is cut or falls abruptly.
2. Output circuit
The output circuit contains a RESET output control comparator that compares the voltage at the CTP pin to the threshold voltage to
release the RESET output if the CTP pin voltage exceeds the threshold value.
Since the reset (RESET) output buffer has CMOS organization, no pull-up resistor is needed.
3. Pulse generator
The pulse generator generates pulses when the voltage at the CK1 and CK2 clock pins changes to High from Low level
(positive-edge trigger) and exceeds the threshold voltage; it sends the clock signal to the watchdog timer.
4. Watchdog timer
The watchdog timer can monitor two clock pulses. Short-circuit the CK1 and CK2 clock pins to monitor a single clock pulse.
5. Inhibition pin
The inhibition (INH) pin forces the watchdog timer on/off. When this pin is High level, the watchdog timer is stopped.
6. Logic circuit
The logic circuit contains flip-flops.
Flip-flop RSFF1 controls the charging and discharging of the power-on reset hold time setting capacitor (CTP).
Flip-flop RSFF2 turns on/off the circuit that accelerates charging of the power-on reset hold time setting capacitor
(CTP) at a reset. The RSFF2 operates only at a reset; it does not operate at a power-on reset when the power is turned on.
5. Absolute Maximum Ratings
Parameter
Symbol
Conditions
VCC
—
CK1
VCK1
—
CK2
VCK2
—
INH
IINH
—
RESET
IOL
IOH
—
Power supply voltage*
Input voltage*
Reset output current
Power dissipation
Storage temperature
PD
Tstg
Ta
+85C
—
Rating
Unit
Min
Max
–0.3
+7
V
–0.3
+7
V
–10
+10
mA
—
200
mW
–55
+125
C
: The voltage is based on the ground voltage (0 V).
WARNING:
1.
Semiconductor devices may be permanently damaged by application of stress (including, without limitation,
voltage, current or temperature) in excess of absolute maximum ratings.Do not exceed any of these ratings.
Document Number: 002-08550 Rev. *A
Page 5 of 30
MB3793-27A
6. Recommended Operating Conditions
Parameter
Symbol
Conditions
Power supply voltage
VCC
Reset (RESET) output current
Value
Unit
Min
Typ
Max
—
1.2
—
6.0
V
IOL
IOH
—
–5
—
+5
mA
Power-on reset hold time setting capacity
CTP
—
0.001
—
10
F
Watchdog-timer monitoring time setting
capacity*
CTW
—
0.001
—
1
F
Ta
—
–40
—
+85
C
Operating ambient temperature
: The watchdog timer monitor time range depends on the rating of the setting capacitor.
WARNING:
1. The recommended operating conditions are required in order to ensure the normal operation of the
semiconductor device. All of the device's electrical characteristics are warranted when the device is operated
under these conditions.
2. Any use of semiconductor devices will be under their recommended operating condition.
3.Operation under any conditions other than these conditions may adversely affect reliability of device and could
result in device failure.
4.No warranty is made with respect to any use, operating conditions or combinations not represented on this data
sheet. If you are considering application under any conditions other than listed herein, please contact sales
representatives beforehand.
Document Number: 002-08550 Rev. *A
Page 6 of 30
MB3793-27A
7. Electrical Characteristics
7.1
DC Characteristics
(VCC = +3.3 V, Ta = +25C)
Parameter
Power supply current
Symbol
ICC
Conditions
After exit from reset
VSL
VCC falling
VSH
VCC rising
Detection voltage
Detection voltage hysteresis
difference
Clock-input threshold voltage
Clock-input hysteresis
Inhibition-input voltage
Input current
(CK1, CK2, INH)
Reset output voltage
Reset-output minimum power
voltage
Ta = +25 C
Ta = –40 C to +85 C
Ta = +25 C
Ta = –40 C to +85 C
Value
Min
Typ
Max
—
31
55
2.63
2.70
2.77
(2.59)*
2.70
(2.81)*
2.69
2.76
2.87
(2.65)*
2.76
(2.87)*
Unit
A
V
V
VSHYS
VSH – VSL
35
65
95
mV
VCIH
CK rising
(0.7)*
1.3
1.9
V
VCIL
CK falling
0.5
1.0
(1.5)*
V
V
VCHTS
—
(0.1)*
0.3
(0.6)*
VIIH
—
2.2
—
—
VIIL
—
—
0
0.8
V
IIH
VCK = 5 V
—
0
1.0
A
IIL
VCK = 0 V
–1.0
0
—
A
VOH
IRESET = –5 mA
2.8
3.10
—
V
VOL
IRESET = +5 mA
—
0.12
0.4
V
VCCL
IRESET = +50 A
—
0.8
1.2
V
: The values enclosed in parentheses ( ) are setting assurance values.
Document Number: 002-08550 Rev. *A
Page 7 of 30
MB3793-27A
7.2
AC Characteristics
(VCC = +3.3 V, Ta = +25C)
Parameter
Symbol
Conditions
Value
Min
Typ
Max
Unit
Power-on reset hold time
tPR
CTP = 0.1 F
30
75
120
ms
VCC input pulse width
tPI
CTP = 0.1 F
(8)*2
—
—
s
VCC delay time
tPD
CTP = 0.1 F
—
2
(10)*2
s
Watchdog timer monitor time
tWD
CTW = 0.01 F,
CTP = 0.1 F
8
16
24
ms
Watchdog timer reset time
tWR
CTP = 0.1 F
2
5.5
9
ms
Clock input pulse width
tCKW
—
500
—
—
ns
Clock input pulse cycle
tCKT
—
20
—
—
s
Rising
tr*1
CL = 50 pF
—
—
500
ns
Falling
tf*1
CL = 50 pF
—
—
500
ns
Reset (RESET) output transition time
*1:The voltage range is 10% to 90% at testing the reset output transition time.
*2:The values enclosed in parentheses ( ) are setting assurance values.
Document Number: 002-08550 Rev. *A
Page 8 of 30
MB3793-27A
8. Diagram
8.1
Basic operation (Positive clock pulse)
VSH
VSL
VCC
tCKW
CK1
tCKT
CK2
INH
Vth
CTP
VH
CTW
VL
RESET
tWD
tPR
(1) (2)
Document Number: 002-08550 Rev. *A
(3)
(4)(5) (5)
tPR
tWR
(6) (7)
(8) (9)
(10)
(11)
(12)
(13)
Page 9 of 30
MB3793-27A
8.2
Basic operation (Negative clock pulse)
VSH
VSL
VCC
tCKW
CK1
tCKT
CK2
INH
Vth
CTP
VH
CTW
VL
RESET
tPR
(1) (2)
tWD
(3)
(4)(5) (5)
Document Number: 002-08550 Rev. *A
tPR
tWR
(6) (7)
(8) (9)
(10)
(11)
(12)
(13)
Page 10 of 30
MB3793-27A
8.3
Single-clock input monitoring (Positive clock pulse)
tCKW
CK1
CK2
tCKT
Vth
CTP
VH
CTW
VL
RESET
tWD
tWR
Note : The MB3793 can monitor only one clock.
The MB3793 checks the clock signal at every other input pulse. Therefore, set watchdog
timer monitor time tWD to the time that allows the MB3793 to monitor the period twice as
long as the input clock pulse.
Document Number: 002-08550 Rev. *A
Page 11 of 30
MB3793-27A
8.4
Inhibition operation (Positive clock pulse)
VSH
VSL
VCC
tCKW
CK1
tCKT
CK2
INH
Vth
CTP
VH
CTW
VL
RESET
tPR
(1) (2)
Document Number: 002-08550 Rev. *A
tWD
(3)
(4)(5) (5)
tPR
tWR
(6) (7)
(11) (8) (9)
(10)
(12)
(13)
Page 12 of 30
MB3793-27A
8.5
Clock pulse input supplementation (Positive clock pulse)
*1
CK1
*2
CK2
VH
CTW
VL
Note : The MB3793 watchdog timer monitors Clock1 (CK1) and Clock2 (CK2) pulses alternately.
When a CK2 pulse is detected after detecting a CK1 pulse, the monitoring time setting capacity (CTW)
switches to charging from discharging.
When two consecutive pulses occur on one side of this alternation before switching, the second pulse
is ignored.
In the above figure, pulse *1 and *2 are ignored.
Document Number: 002-08550 Rev. *A
Page 13 of 30
MB3793-27A
9. Operation Sequence
9.1
Positive clock pulse input
See “1. Basic operation (positive clock pulse)” under “Diagram.”
9.2
Negative clock pulse input
See “2. Basic operation (negative clock pulse)” under “Diagram.”
The MB3793 operates in the same way whether it inputs positive or negative pulses.
9.3
Clock monitoring
To use the MB3793 while monitoring only one clock, connect clock pins CK1 and CK2.
Although the MB3793 operates basically in the same way as when monitoring two clocks, it monitors the clock signal at every
other input pulse.
See “3. Single-clock input monitoring (positive clock pulse)” under “Diagram.”
9.4
Description of Operations
The numbers given to the following items correspond to numbers (1) to (13) used in “Diagram.”
(1) The MB3793 outputs a reset signal when the supply voltage (VCC) reaches about 0.8 V (VCCL)
(2) If VCC reaches or exceeds the rise-time detected voltage VSH, the MB3793 starts charging the power-on reset hold
time setting capacitor CTP. At this time, the output remains in a reset state. The VSH value is about 2.76 V.
(3) When CTP has been charged for a certain period of time TPR (until the CTP pin voltage exceeds the threshold voltage
(Vth) after the start of charging), the MB3793 cancels the reset (setting the RESET pin to “H” level from “L” level).
The Vth value is about 2.4 V with VCC = 3.3 V
The power-on reset hold time tPR is set with the following equation:
.
tPR (ms) =. A CTP (F)
The value of A is about 750 with VCC = 3.3 V and about 700 with VCC = 3.0 V. The MB3793 also starts charging the
watchdog time setting capacitor (CTW).
(4) When the voltage at the watchdog timer monitor time setting pin CTW reaches the “H” level threshold voltage VH, the
CTW switches from the charge state to the discharge state.
The value of VH is always about 1.24 V regardless of the detected voltage.
(5) If the CK2 pin inputs a clock pulse (positive edge trigger) when the CTW is being discharged in the CK1-CK2 order or
simultaneously, the CTW switches from the discharge state to the charge state.
The MB3793 repeats operations (4) and (5) as long as the CK1/CK2 pin inputs clock pulses with the system logic circuit
operating normally.
(6) If no clock pulse is fed to the CK1 or CK2 pin within the watchdog timer monitor time tWD due to some problem with the
system logic circuit, the CTW pin is set to the “L” level threshold voltage VL or less and the MB3793 outputs a reset
signal (setting the RESET pin to “L” level from “H” level).
The value of VL is always about 0.24 V regardless of the detected voltage.
The watchdog timer monitor time tWD is set with the following equation:
.
tWD (ms) =. B CTW (F)
The value of B is hardly affected by the power supply voltage; it is about 1600 with VCC = 3.0 V to 3.3 V.
Document Number: 002-08550 Rev. *A
Page 14 of 30
MB3793-27A
(7) When a certain period of time tWR has passed (until the CTP pin voltage reaches or exceeds Vth again after recharging
the CTP), the MB3793 cancels the reset signal and starts operating the watchdog timer.
The watchdog timer monitor reset time tWR is set with the following equation:
.
tWR (ms) =. D x CTP (F)
The value of D is 55 with VCC = 3.3 V and about 50 with VCC = 3.0 V.
The MB3793 repeats operations (4) and (5) as long as the CK1/CK2 pin inputs clock pulses. If no clock pulse is input,
the MB3793 repeats operations (6) and (7).
(8) If VCC is lowered to the fall-time detected voltage (VSL) or less, the CTP pin voltage decreases and the MB3793 outputs
a reset signal (setting the RESET pin to “L” level from “H” level).
The value of VSL is 2.7 V
(9) When VCC reaches or exceeds VSH again, the MB3793 starts charging the CTP.
(10) When the CTP pin voltage reaches or exceeds Vth, the MB3793 cancels the reset and restarts operating the watchdog
timer. It repeats operations (4) and (5) as long as the CK1/CK2 pin inputs clock pulses.
(11) Making the inhibit pin active (setting the INH pin to “H” from “L”) forces the watchdog timer to stop operation.
This stops only the watchdog timer, leaving the MB3793 monitoring VCC (operations (8) to (10)).
The watchdog timer remains inactive unless the inhibit input is canceled.
(12) Canceling the inhibit input (setting the INH pin to “L” from “H”) restarts the watchdog timer.
(13) The reset signal is output when the power supply is turned off to set VCC to VSL or less.
Document Number: 002-08550 Rev. *A
Page 15 of 30
MB3793-27A
10. Typical Characteristics
Detection voltage vs.
Operating ambient temperature
Power supply current vs. power supply voltage
40
3.0
Ta = −40 °C to +85 °C
30
Detection voltage VSH, VSL (V)
Power supply current ICC (μA)
35
25
20
Watchdog timer monitoring
(VINH = 0 V)
15
10
MB3793-27A
VCC
VINH
f = 1 kHz
Duty = 10 %
VL = 0 V
VH = VCC
MAX
2.8
MAX
3.0
4.0
−40°C
+25°C
+85°C
−2
−3
−4
−5
Reset output current IRESET (mA)
Reset output voltage vs. reset output current
(N-MOS side)
Reset output voltage VRESET (V)
Reset output voltage VRESET (V)
3.3
3.2
3.1
3.0
2.9
2.8
2.7
2.6
2.5
2.4
2.3
−40 −20 0 +20 +40 +60 +80 +100
Operating ambient temperature Ta (°C)
Reset output voltage vs. reset output current
(P-MOS side)
−1
VSL (Ta = +25 °C)
(Ta = −40 °C to +85 °C)
Power supply voltage VCC(V)
0
VSL
MIN
2.6
2.0
VSH
MIN
CTP
CTW
0.01 μF 0.1 μF
1.0
TYP
TYP
2.7
2.5
0
VSH (Ta = +25 °C)
2.9
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
+85°C
+25°C
−40°C
0
1
2
3
4
5
Reset output current IRESET (mA)
Note: Without writing the value clearly, VCC = 3.3 (V), CTP = 0.1 (F), CTW = 0.01 (F).
Document Number: 002-08550 Rev. *A
Page 16 of 30
MB3793-27A
Power-on reset hold time vs.
Operating ambient temperature
(When Vcc rising)
Reset output voltage vs. power supply voltage
7
200
6
5
4
3
Ta = +85 °C
2
Ta = +25 °C
1
Ta = −40 °C
160
1
2
3
100
80
40
Watchdog timer reset time tWR (ms)
14
12
10
MAX
8
TYP
6
4
2
0
MIN
Watchdog timer monitoring time tWD (ms)
24
24
Ta = +25 °C
0 +20 +40 +60 +80 +100
Operating ambient temperature Ta (°C)
Document Number: 002-08550 Rev. *A
Ta = −40 °C to +85 °C
MAX
22
20
Ta = +25 °C
18
TYP
16
14
12
10
MIN
8
6
4
2
0
−40 −20
0 +20 +40 +60 +80 +100
Watchdog timer monitoring time vs.
Operating ambient temperature
26
16
−40 −20
Operating ambient temperature Ta (°C)
26
18
MIN
20
0
Watchdog timer reset time vs.
Operating ambient temperature
(When monitoring)
20
TYP
60
4
Ta = −40 °C to +85 °C
MAX
120
Power supply voltage VCC (V)
22
Ta = +25 °C
140
0
0
Ta = −40 °C to +85 °C
180
Power-on reset hold time tPR (ms)
Reset output voltage VRESET (V)
Pull-up resistance 100 kΩ
−40 −20
0 +20 +40 +60 +80 +100
Operating ambient temperature Ta (°C)
Page 17 of 30
MB3793-27A
104
103
Ta = −40 °C
102
Ta = +25 °C
101
Ta = +85 °C
1
10 −1
10−4
10−3
10−2
10−1
Watchdog timer reset time vs. CTP capacitance
Watchdog timer reset time tWR (ms)
Power-on reset hold time tPR (ms)
Power-on reset hold time vs. CTP capacitance
101
1
102
103
102
Ta = −40 °C
101
1
Ta = +25 °C
Ta = +85 °C
10−1
10−2
10−4
10−3
10−2
10−1
1
101
102
Power-on reset hold time setting capacitance
Power-on reset hold time setting capacitance
CTP (μF)
CTP (μF)
Watchdog timer monitoring time tWD (ms)
Watchdog timer monitoring time vs. CTW capacitance
103
Ta = −40 °C
102
Ta = +25 °C
101
1
Ta = +85 °C
10−1
10−5
10−4
10−3
10−2
10−1
1
101
Watchdog timer monitoring time
setting capacitance CTW (μF)
Document Number: 002-08550 Rev. *A
Page 18 of 30
MB3793-27A
11. Application Example
11.1
Supply voltage monitor and watchdog timer (1-clock monitor)
VCC
5
VCC
2 CTW
RESET 1
MB3793
RESET
CTW*
CTP*
3 CTP
CK1 8
VCC
Microprocessor
CK
6 INH
GND
4
CK2 7
GND
GND
*: Use a capacitor with less leakage current.
The MB3793 monitors the clock (CK1, CK2) at every other input pulse.
Document Number: 002-08550 Rev. *A
Page 19 of 30
MB3793-27A
11.2
Supply voltage monitor and watchdog timer stop
VCC
5
VCC
6 INH
RESET 1
RESET
MB3793
2 CTW
VCC
Microprocessor 1
CK1 8
CK
HALT
GND
CTW*
RESET
VCC
Microprocessor 2
CK
HALT
GND
CTP*
3 CTP
GND
CK2 7
4
GND
*: Use a capacitor with less leakage current.
Document Number: 002-08550 Rev. *A
Page 20 of 30
MB3793-27A
12. Typical Application
VCC
5
VCC
2 CTW
RESET 1
RESET
MB3793
CTW*
CTP*
3 CTP
RESET
VCC
Microprocessor 1
CK1 8
Microprocessor 2
CK
CK
GND
GND
6 INH
GND
VCC
CK2 7
4
GND
*: Use a capacitor with less leakage current.
1. Equation of time-setting capacitances (CTP and CTW) and set time
.
tPR [ms] =. A CTP [F]
.
tWD [ms] =. B CTW [F]
.
tWR [ms] =. D CTP [F]
Values of A, B, C, and D
A
B
C
D
Remark
750
1600
0
55
VCC = 3.3 V
700
1600
0
50
VCC = 3.0 V
2. Example (when CTP = 0.1 F and CTW = 0.01 F)
Symbol
time
(ms)
tPR
tWD
tWR
Document Number: 002-08550 Rev. *A
VCC = 3.3 V
VCC = 3.0 V
.
=. 75
.
=. 16
.
=. 5.5
.
=. 70
.
=. 16
.
=. 5
Page 21 of 30
MB3793-27A
13. Notes On Use
• Take account of common impedance when designing the earth line on a printed wiring board.
• Take measures against static electricity.
- For semiconductors, use antistatic or conductive containers.
- When storing or carrying a printed circuit board after chip mounting, put it in a conductive bag or container.
- The work table, tools and measuring instruments must be grounded.
- The worker must put on a grounding device containing 250 k to 1 M resistors in series.
• Do not apply a negative voltage
- Applying a negative voltage of 0.3 V or less to an LSI may generate a parasitic transistor, resulting in
malfunction.
14. Ordering Information
Part number
Package
Marking
Remarks
MB3793-27APF-❏❏❏
8-pin Plastic SOP
(FPT-8P-M01)
3793-Y
conventional version
MB3793-27APNF-❏❏❏
8-pin Plastic SOP
(FPT-8P-M02)
3793-Y
conventional version
MB3793-27APF-❏❏❏E1
8-pin Plastic SOP
(FPT-8P-M01)
3793-Y
Lead Free version
MB3793-27APNF-❏❏❏E1
8-pin Plastic SOP
(FPT-8P-M02)
3793-Y
Lead Free version
15. RoHS Compliance Information of Lead (Pb) Free version
The LSI products of Cypress with “E1” are compliant with RoHS Directive , and has observed the standard of lead, cadmium,
mercury, Hexavalent chromium, polybrominated biphenyls (PBB) , and polybrominated diphenyl ethers (PBDE) .
The product that conforms to this standard is added “E1” at the end of the part number.
Document Number: 002-08550 Rev. *A
Page 22 of 30
MB3793-27A
16. Marking Format (Lead Free version)
Lead Free version
3793 − Y
E1XXXX
XXX
INDEX
Lead Free version
Document Number: 002-08550 Rev. *A
3793 − Y
XXXX
E1 XXX
SOP-8
(FPT-8P-M01)
SOP-8
(FPT-8P-M02)
Page 23 of 30
MB3793-27A
17. Labeling Sample (Lead free version)
lead-free mark
JEITA logo
MB123456P - 789 - GE1
(3N) 1MB123456P-789-GE1
1000
(3N)2 1561190005 107210
JEDEC logo
G
Pb
QC PASS
PCS
1,000
MB123456P - 789 - GE1
2006/03/01
ASSEMBLED IN JAPAN
MB123456P - 789 - GE1
1/1
0605 - Z01A
1000
1561190005
Lead Free version
Document Number: 002-08550 Rev. *A
Page 24 of 30
MB3793-27A
18. MB3793-27APF-❏❏❏E1, MB3793-27APNF-❏❏❏E1
Recommended Conditions Of Moisture Sensitivity Level
Item
Condition
Mounting Method
IR (infrared reflow) , Manual soldering (partial heating method)
Mounting times
2 times
Storage period
Storage conditions
Document Number: 002-08550 Rev. *A
Before opening
Please use it within two years after
Manufacture.
From opening to the 2nd
reflow
Less than 8 days
When the storage period after
opening was exceeded
Please processes within 8 days
after baking (125°C, 24h)
5°C to 30°C, 70RH or less (the lowest possible humidity)
Page 25 of 30
MB3793-27A
[Temperature Profile for Cypress Standard IR Reflow]
(1) IR (infrared reflow)
H rank : 260°C Max.
260 °C
255 °C
170 °C
to
190 °C
(b)
RT
(a)
(a) Temperature Increase gradient
(b) Preliminary heating
(c) Temperature Increase gradient
(d) Actual heating
(d’)
(e) Cooling
(c)
(d)
(e)
(d')
: Average 1°C/s to 4°C/s
: Temperature 170°C to 190°C, 60s to 180s
: Average 1°C/s to 4°C/s
: Temperature 260°C MAX; 255°C or more, 10s or less
: Temperature 230°C or more, 40s or less
or
Temperature 225°C or more, 60s or less
or
Temperature 220°C or more, 80s or less
: Natural cooling or forced cooling
Note : Temperature : the top of the package body
(2) Manual soldering (partial heating method)
Conditions : Temperature 400°C MAX
Times : 5 s max/pin
Document Number: 002-08550 Rev. *A
Page 26 of 30
MB3793-27A
19. Package Dimensions
8-pin plastic SOP
(FPT-8P-M01)
8-pin plastic SOP
(FPT-8P-M01)
Lead pitch
1.27 mm
Package width ×
package length
5.3 × 6.35 mm
Lead shape
Gullwing
Sealing method
Plastic mold
Mounting height
2.25 mm MAX
Weight
0.10 g
Code
(Reference)
P-SOP8-5.3×6.35-1.27
Note 1) *1 : These dimensions include resin protrusion.
Note 2) *2 : These dimensions do not include resin protrusion.
Note 3) Pins width and pins thickness include plating thickness.
Note 4) Pins width do not include tie bar cutting remainder.
+0.25
+.010
+0.03
*1 6.35 –0.20 .250 –.008
0.17 –0.04
+.001
8
.007 –.002
5
*2 5.30±0.30 7.80±0.40
(.209±.012) (.307±.016)
INDEX
Details of "A" part
+0.25
2.00 –0.15
+.010
.079 –.006
1
"A"
4
1.27(.050)
0.47±0.08
(.019±.003)
0.13(.005)
(Mounting height)
0.25(.010)
0~8°
M
0.50±0.20
(.020±.008)
0.60±0.15
(.024±.006)
+0.10
0.10 –0.05
+.004
.004 –.002
(Stand off)
0.10(.004)
C
2002-2010 FUJITSU SEMICONDUCTOR LIMITED F08002S-c-6-9
Document Number: 002-08550 Rev. *A
Dimensions in mm (inches).
Note: The values in parentheses are reference values.
Page 27 of 30
MB3793-27A
8-pin plastic SOP
Lead pitch
1.27 mm
Package width ×
package length
3.9 mm × 5.05 mm
Lead shape
Gullwing
Sealing method
Plastic mold
Mounting height
1.75 mm MAX
Weight
0.06 g
(FPT-8P-M02)
8-pin plastic SOP
(FPT-8P-M02)
+0.25
Note 1) *1 : These dimensions include resin protrusion.
Note 2) *2 : These dimensions do not include resin protrusion.
Note 3) Pins width and pins thickness include plating thickness.
Note 4) Pins width do not include tie bar cutting remainder.
+.010
+0.03
*1 5.05 –0.20 .199 –.008
0.22 –0.07
+.001
.009 –.003
8
5
*2 3.90±0.30 6.00±0.20
(.154±.012) (.236±.008)
Details of "A" part
45°
1.55±0.20
(Mounting height)
(.061±.008)
0.25(.010)
0.40(.016)
1
"A"
4
1.27(.050)
0.44±0.08
(.017±.003)
0.13(.005)
0~8°
M
0.50±0.20
(.020±.008)
0.60±0.15
(.024±.006)
0.15±0.10
(.006±.004)
(Stand off)
0.10(.004)
C
2002-2012 FUJITSU SEMICONDUCTOR LIMITED F08004S-c-5-10
Document Number: 002-08550 Rev. *A
Dimensions in mm (inches).
Note: The values in parentheses are reference values.
Page 28 of 30
MB3793-27A
20. Major Changes
Spansion Publication Number: MB3793-27A_DS04-27404
Page
Section
Change Results
Revision 4.0
1
-
Company name and layout design change
Deleted "There is also a mask option that can detect voltages of 4.9 V to 2.4
V in 0.1-V steps."
DESCRIPTION
NOTE: Please see “Document History” about later revised information.
Document History
Document Title: MB3793-27A Power Voltage Monitoring IC with Watchdog Timer
Document Number: 002-08550
Revision
ECN
**
*A
5169535
Orig. of
Change
Submission
Date
TAOA
01/30/2015
Migrated to Cypress and assigned document number 002-08550.
No change to document contents or format.
TAOA
04/01/2016
Updated to Cypress template
Document Number: 002-08550 Rev. *A
Description of Change
Page 29 of 30
MB3793-27A
Sales, Solutions, and Legal Information
Worldwide Sales and Design Support
Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office
closest to you, visit us at Cypress Locations.
PSoC® Solutions
Products
ARM® Cortex® Microcontrollers
Automotive
cypress.com/arm
cypress.com/automotive
Clocks & Buffers
Interface
Lighting & Power Control
Memory
cypress.com/clocks
cypress.com/interface
cypress.com/powerpsoc
cypress.com/memory
PSoC
cypress.com/psoc
Touch Sensing
PSoC 1 | PSoC 3 | PSoC 4 | PSoC 5LP
Cypress Developer Community
Community | Forums | Blogs | Video | Training
Technical Support
cypress.com/support
cypress.com/touch
USB Controllers
Wireless/RF
cypress.com/psoc
cypress.com/usb
cypress.com/wireless
© Cypress Semiconductor Corporation 2001-2016. This document is the property of Cypress Semiconductor Corporation and its subsidiaries, including Spansion LLC ("Cypress"). This document,
including any software or firmware included or referenced in this document ("Software"), is owned by Cypress under the intellectual property laws and treaties of the United States and other countries
worldwide. Cypress reserves all rights under such laws and treaties and does not, except as specifically stated in this paragraph, grant any license under its patents, copyrights, trademarks, or other
intellectual property rights. If the Software is not accompanied by a license agreement and you do not otherwise have a written agreement with Cypress governing the use of the Software, then Cypress
hereby grants you under its copyright rights in the Software, a personal, non-exclusive, nontransferable license (without the right to sublicense) (a) for Software provided in source code form, to modify
and reproduce the Software solely for use with Cypress hardware products, only internally within your organization, and (b) to distribute the Software in binary code form externally to end users (either
directly or indirectly through resellers and distributors), solely for use on Cypress hardware product units. Cypress also grants you a personal, non-exclusive, nontransferable, license (without the right
to sublicense) under those claims of Cypress's patents that are infringed by the Software (as provided by Cypress, unmodified) to make, use, distribute, and import the Software solely to the minimum
extent that is necessary for you to exercise your rights under the copyright license granted in the previous sentence. Any other use, reproduction, modification, translation, or compilation of the Software
is prohibited.
CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS DOCUMENT OR ANY SOFTWARE, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress reserves the right to make changes to this document without further notice. Cypress does not
assume any liability arising out of the application or use of any product or circuit described in this document. Any information provided in this document, including any sample design information or
programming code, is provided only for reference purposes. It is the responsibility of the user of this document to properly design, program, and test the functionality and safety of any application
made of this information and any resulting product. Cypress products are not designed, intended, or authorized for use as critical components in systems designed or intended for the operation of
weapons, weapons systems, nuclear installations, life-support devices or systems, other medical devices or systems (including resuscitation equipment and surgical implants), pollution control or
hazardous substances management, or other uses where the failure of the device or system could cause personal injury, death, or property damage ("Unintended Uses"). A critical component is any
component of a device or system whose failure to perform can be reasonably expected to cause the failure of the device or system, or to affect its safety or effectiveness. Cypress is not liable, in whole
or in part, and Company shall and hereby does release Cypress from any claim, damage, or other liability arising from or related to all Unintended Uses of Cypress products. Company shall indemnify
and hold Cypress harmless from and against all claims, costs, damages, and other liabilities, including claims for personal injury or death, arising from or related to any Unintended Uses of Cypress
products.
Cypress, the Cypress logo, Spansion, the Spansion logo, and combinations thereof, PSoC, CapSense, EZ-USB, F-RAM, and Traveo are trademarks or registered trademarks of Cypress in the United
States and other countries. For a more complete list of Cypress trademarks, visit cypress.com. Other names and brands may be claimed as property of their respective owners.
Document Number: 002-08550 Rev. *A
Revised April 1, 2016
Page 30 of 30