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Data Sheet
PT7M6418 -6450CL/CH /NL/BL/NLL/CLB
µp
Supervisor
Description
Features
•
•
•
•
•
•
•
•
High accuracy:
±2%
(25°C)
Low power consumption: 0.6µA @ 3V Vcc
Detecting voltage range: 1.8 to 5V in 100mV
increments
Operating voltage range: 1.2V ~ 5.5V
Operating temperature range: -40°C to + 85°C
Detecting
voltage
accuracy
over
temperature:
±2.5% ×
TYP
Output configuration: N-channel open drain or
CMOS
Reset timeout period at least 120ms
The PT7M64xx series are µP supervisory circuits with a
minimum reset timeout period of 120ms. Each circuit
includes a precise bandgap reference; a comparator, a
reset timeout circuit, internally trimmed resistor networks
that set specified trip thresholds, and an internal 5%
threshold hysteresis circuit (see the
Block Diagram).
Output is asserted when V
CC
falls below the internal V
TH-
and remains asserted until V
CC
rises above V
TH+
(V
TH+
=
V
TH-
×1.05)
after a reset timeout period. These devices
provide excellent circuit reliability and low cost by
eliminating external components and adjustments when
monitoring normal systems voltage from +1.8V to +5V
in 100mV increments. The series are voltage detectors
with a propagation delay of 35µs.
The family is available with four output stage options:
push-pull with active-low output, push-pull with active-
high output, open drain with active-low output and
bidirection port with active-low output and pushbutton
reset input. These devices specified over the -40°C to
+85°C temperature range.
Ordering Information
Part Number
PT7M64xxCLTA3E
PT7M64xxCLTA5E
PT7M64xxCLC4E
PT7M64xxCLTDE
PT7M64xxCLBTA5E
PT7M64xxCLBC4E
PT7M64xxCHTA3E
PT7M64xxCHTA5E
PT7M64xxCHC4E
PT7M64xxCHNBE
PT7M64xxCHTDE
Package
Lead free and Green SOT23-3
Lead free and Green SOT23-5
Lead free and Green SC70-4
Lead free SOT89
Lead free and Green SOT23-5
Lead free and Green SC70-4
Lead free and Green SOT23-3
Lead free and Green SOT23-5
Lead free and Green SC70-4
Lead free TO92
Lead free SOT89
Part Number
PT7M64xxCHBTA5E
PT7M64xxNLLC4E
PT7M64xxNLTA3E
PT7M64xxNLTA5E
PT7M64xxNLC4E
PT7M64xxNLTDE
PT7M64xxNLBTA5E
PT7M64xxBLTA3E
PT7M64xxBLTA5E
PT7M64xxBLTDE
PT7M64xxBLBTA5E
Package
Lead free and Green SOT23-5
Lead free and Green SC70-4
Lead free and Green SOT23-3
Lead free and Green SOT23-5
Lead free and Green SC70-4
Lead free SOT89
Lead free and Green SOT23-5
Lead free and Green SOT23-3
Lead free and Green SOT23-5
Lead free SOT89
Lead free and Green SOT23-5
Note:
“xx” refer to voltage range, see below table 1.
PT0200(01/10)
1
Ver: 8
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Data Sheet
PT7M6418 -6450CL/CH /NL/BL/NLL/CLB
µp
Supervisor
Pin Configuration
Pin Description
Name
RST
RST
GND
V
CC
Type
O
O
P
P
Description
Reset Output (PT7M64xxCL/NL/BL/NLL):
RST is asserted when V
CC
drops below voltage threshold V
TH-
:
Active low. For PT7M64xxBL, RST is also pushbutton reset input
Reset Output (PT7M64xxCH):
RST is asserted when V
CC
drops below voltage threshold V
TH-
: Active high.
Ground
Supply Voltage
PT0200(01/10)
4
Ver: 8
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Data Sheet
PT7M6418 -6450CL/CH /NL/BL/NLL/CLB
µp
Supervisor
Typical Operation Circuit
PT7M64xxNL Application Example
Vcc1/Vcc2
V
CC1
PT7M64xxNL
RL
Vcc
GND
RST
RESET
For typical application, R
L
could be 100kΩ, R
IN
less than 10kΩ and that C more than 0.1µF.
PT7M64xxBL Application Example
PT0200(01/10)
5
Ver: 8
嵌入式系统
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