STM6315TDW13F [STMICROELECTRONICS]
1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4, LEAD FREE, SOT143, 4 PIN;
| 型号： | STM6315TDW13F |
| 厂家： | 
ST |
| 描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4, LEAD FREE, SOT143, 4 PIN 光电二极管 |
| 文件： | 总21页 (文件大小：144K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
STM6315
Open Drain Microprocessor Reset
Features Summary
■ GUARANTEED RST ASSERTION DOWN TO
V
= 1.0V (–40°C to 85°C)
CC
■ OPEN-DRAIN RST OUTPUT CAN EXCEED
V
CC
■ ±1.8% RESET THRESHOLD ACCURACY
(25°C)
■ POWER SUPPLY TRANSIENT IMMUNITY
■ LOW SUPPLY CURRENT OF 5µA (typ)
SOT143-4 (W1)
■ OPERATING TEMPERATURE: –40°C TO
125°C
■ AVAILABLE IN SOT143-4 PACKAGE
February 2006
Rev 2.0
1/21
www.st.com
21
Contents
STM6315
Contents
1
2
Summary Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1
2.2
2.3
2.4
Reset Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Manual Reset Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Negative-Going V Transients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
CC
Valid RST Output Down to V = 0V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
CC
3
4
5
6
7
8
Typical Operating Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Maximum Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
DC and AC Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Package Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Part Numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2/21
Rev 2.0
STM6315
List of Figures
List of Figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Logic Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
SOT143-4 Connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Hardware Hookup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Reset Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Manual Reset Timing Diagram, Switch Bounce/Debounce . . . . . . . . . . . . . . . . . . . . . . . . . 8
Supply Current vs. Supply Voltage, V
= 3.08V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
RST
Supply Current vs. Temperature (No load), V
= 3.08V . . . . . . . . . . . . . . . . . . . . . . . . . . 9
RST
RST Output Voltage vs. Output Current, V
= 4.25V . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
CC
Figure 10. Normalized Reset Time-out Period vs. Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 11. Normalized Reset Threshold vs. Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 12. Max. Transient Duration NOT Causing Reset Pulse vs. Reset Threshold Overdrive. . . . . 11
Figure 13. AC Testing Input/Output Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 14. SOT143-4 – 4-lead Small Outline Transistor Package Outline. . . . . . . . . . . . . . . . . . . . . . 17
Rev 2.0
3/21
List of Tables
STM6315
List of Tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Signal Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Operating and AC Measurement Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
DC and AC Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
SOT143-4 – 4-lead Small Outline Transistor Package Mechanical Data . . . . . . . . . . . . . . 17
Ordering Information Scheme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Marking Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Document Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4/21
Rev 2.0
STM6315
Summary Description
1
Summary Description
The STM6315 Microprocessor Reset Circuit is a low power supervisory device used to
monitor power supplies. It performs a single function: asserting a reset signal whenever the
V
supply voltage drops below a preset value and keeping it asserted until V has risen
CC
CC
above the preset threshold for a minimum period of time (t ). It also provides a manual
rec
reset input (MR). The open drain RST output can be pulled up to a voltage higher than V
but less than 6V.
,
CC
The STM6315 comes with standard factory-trimmed reset thresholds of 2.63V, 2.93V, 3.08V,
4.38V, and 4.63V. The STM6315 is available in the SOT143-4 package.
Figure 1. Logic Diagram
V
CC
STM6315
MR
RST
V
SS
AI11162
Table 1.
Signal Names
Symbol
Description
V
Supply Voltage
CC
MR
Manual Reset Input
RST
Active-low Open Drain Reset Output
Ground
V
SS
Figure 2. SOT143-4 Connections (top view)
V
V
4
3
1
CC
SS
2
MR
RST
AI11163
Rev 2.0
5/21
Summary Description
STM6315
Figure 3. Block Diagram
V
CC
COMPARE
V
RST
t
rec
RST
Generator
DEBOUNCE
MR
AI11164
Figure 4. Hardware Hookup
V
CC
V
V
CC
CC
10k
STM6315
MCU
RESET
Input
(1)
RST
MR
Manual
Reset
V
V
SS
SS
AI11165
1. Open drain RST output requires external pull-up resistor.
6/21
Rev 2.0
STM6315
Operation
2
Operation
2.1
Reset Output
The STM6315 Microprocessor Reset Circuit has an active-low, open drain reset output. This
output structure will sink current when RST is asserted. Connect a pull-up resistor from RST
to any supply voltage up to 6V (see Figure 4 on page 6). Select a resistor value large
enough to register a logic low, and small enough to register a logic high while supplying all
input current and leakage paths connected to the reset output line. A 10k pull-up is sufficient
in most applications.
The STM6315 asserts a reset signal to the MCU whenever V goes below the reset
CC
threshold (V
), or when the manual reset input (MR) is taken low (see Figure 5 and
RST
Figure 6 on page 8). RST is guaranteed valid down to V = 1.0V (–40°C to +85°C).
CC
During power-up, (once V
exceeds the reset threshold) an internal timer keeps RST low
CC
for the reset time-out period, t . After this interval, RST returns high.
rec
If V
drops below the reset threshold, RST goes low. Each time RST is asserted, it stays
CC
low for at least the reset time-out period. Any time V goes below the reset threshold, the
CC
internal timer clears. The reset timer starts when V
returns above the reset threshold.
CC
2.2
Manual Reset Input
A logic low on MR asserts RST. RST remains asserted while MR is low, and for t after it
rec
returns high. The MR input has an internal pull-up resistor 63kΩ (typ), allowing it to be left
open if not used.
This input can be driven with TTL/CMOS-logic levels or with open drain/collector outputs.
Connect a standard open push-button switch from MR to V to create a manual reset
SS
function (see Figure 4 on page 6); external debounce circuitry is not required. If the device is
used in a noisy environment, connect a 0.1µF capacitor from MR to V to provide
SS
additional noise immunity.
2.3
Negative-Going VCC Transients
The STM6315 is relatively immune to negative-going V transients (glitches). Figure 12 on
CC
page 11 shows typical transient duration versus reset comparator overdrive (for which the
STM6315 will NOT generate a reset pulse). The graph was generated using a negative
pulse applied to V , starting at 0.5V above the actual reset threshold and ending below it
CC
by the magnitude indicated (Reset Threshold Overdrive). The graph indicates the maximum
pulse width a negative V
transient can have without causing a reset pulse. As the
CC
magnitude of the transient increases (further below the threshold), the maximum allowable
pulse width decreases. Any combination of duration and overdrive which lies under the
curve will NOT generate a reset signal (see Figure 12). A 0.1µF bypass capacitor mounted
as close as possible to the V pin provides additional transient immunity.
CC
Rev 2.0
7/21
Operation
STM6315
2.4
Valid RST Output Down to VCC = 0V
When V falls below 1V, the RST output no longer sinks current, but becomes an open
CC
circuit. In most systems this is not a problem, as most MCUs do not operate below 1V.
However, in applications where RST output must be valid down to 0V, a pull-down resistor
may be added to hold the RST output low. This resistor must be large enough to not load the
RST output, and still be small enough to pull the output to Ground. A 100KΩ resistor is
recommended.
Figure 5. Reset Timing Diagram
V
CC
V
RST
V
(min)
t
rec
RST
CC
AI11166
Figure 6. Manual Reset Timing Diagram, Switch Bounce/Debounce
MR Glitch Rejection
MR
MR Input Pulse Width
RST
trec
MR-to-RST Delay
AI11167b
8/21
Rev 2.0
STM6315
Typical Operating Characteristics
3
Typical Operating Characteristics
Note: Typical values are at T = 25°C.
A
Figure 7. Supply Current vs. Supply Voltage, V
= 3.08V
RST
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Supply Voltage, V
(V)
CC
AI11871b
Figure 8. Supply Current vs. Temperature (No load), V
= 3.08V
RST
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
V
= 5V
= 4V
CC
V
CC
V
= 3V
= 2V
CC
V
CC
–40
–20
0
20
40
60
80
100
120
Temperature,T (°C)
A
AI11872b
Rev 2.0
9/21
Typical Operating Characteristics
STM6315
Figure 9. RST Output Voltage vs. Output Current, V = 4.25V
CC
0.20
0.16
0.12
0.08
0.04
0
0
3
6
9
12
Output Current (mA)
AI11873c
Figure 10. Normalized Reset Time-out Period vs. Temperature
1.14
1.12
1.10
1.08
1.06
1.04
1.02
1.00
0.98
–40
–20
0
20
40
60
80
100
120
Temperature,T (°C)
A
AI11875b
10/21
Rev 2.0
STM6315
Typical Operating Characteristics
Figure 11. Normalized Reset Threshold vs. Temperature
1.010
1.005
1.000
0.995
0.990
–40
–20
0
20
40
60
80
100
120
Temperature,T (°C)
A
AI11876b
Figure 12. Max. Transient Duration NOT Causing Reset Pulse vs. Reset Threshold
Overdrive
100
90
80
70
60
50
40
30
20
10
0
1
10
100
1000
Reset Threshold Overdrive (mV)
AI11877
Note:
Reset occurs above the curve.
Rev 2.0
11/21
Maximum Rating
STM6315
4
Maximum Rating
Stressing the device above the rating listed in the “Absolute Maximum Ratings” table may
cause permanent damage to the device. These are stress ratings only and operation of the
device at these or any other conditions above those indicated in the Operating sections of
this specification is not implied. Exposure to Absolute Maximum Rating conditions for
extended periods may affect device reliability. Refer also to the STMicroelectronics SURE
Program and other relevant quality documents.
Table 2.
Symbol
Absolute Maximum Ratings
Parameter
Value
Unit
Operating Temperature Range
–40 to 125
–55 to 150
260
°C
°C
°C
V
T
Storage Temperature (V Off)
STG
(1)
CC
T
Lead Solder Temperature for 10 seconds
Input or Output Voltage
Supply Voltage
SLD
V
–0.3 to V + 0.3
IO
CC
V
–0.3 to 7.0
20
V
CC
I
Output Current
mA
mW
O
P
Power Dissipation
320
D
1. Reflow at peak temperature of 260°C (total thermal budget not to exceed 245°C for greater than 30
seconds).
12/21
Rev 2.0
STM6315
DC and AC Parameters
5
DC and AC Parameters
This section summarizes the operating measurement conditions, and the DC and AC
characteristics of the device. The parameters in the DC and AC characteristics Tables that
follow are derived from tests performed under the Measurement Conditions summarized in
Table 3, Operating and AC Measurement Conditions. Designers should check that the
operating conditions in their circuit match the operating conditions when relying on the
quoted parameters.
Table 3.
Operating and AC Measurement Conditions
Parameter
STM6315
Unit
V
Supply Voltage
1.0 to 5.5
–40 to +125
~5
V
°C
ns
V
CC
Ambient Operating Temperature (T )
A
Input Rise and Fall Times
Input Pulse Voltages
0.2 to 0.8V
0.3 to 0.7V
CC
CC
Input and Output Timing Reference Voltages
V
Figure 13. AC Testing Input/Output Waveforms
0.8V
CC
0.7V
CC
0.3V
CC
0.2V
CC
AI02568
Rev 2.0
13/21
DC and AC Parameters
STM6315
Table 4.
Sym
DC and AC Characteristics
Alter-
(1)
Description
Operating Voltage
Test Condition
Min
Typ
Max
Unit
V
native
V
T = –40 to +85°C
1.0
5.5
12
CC
A
V
= 5.5V, No load
CC
5
µA
T = –40 to +85°C
A
V
= 5.5V, No load
CC
15
10
12
µA
µA
µA
T = –40 to +125°C
A
I
V
Supply Current
CC
CC
V
= 3.6V, No load
CC
4
T = –40 to +85°C
A
V
= 3.6V, No load
CC
T = –40 to +125°C
A
V
> 4.25V, I
= 3.2mA
= 1.2mA
= 80µA
0.4
0.3
0.3
V
V
V
CC
SINK
V
RST Output Voltage
V
> 2.5V, I
CC
OL
SINK
V
> 1.0V, I
SINK
CC
RST Output Open Drain
Leakage Current
V
> V
, RST not asserted
RST
1
µA
CC
Reset Thresholds
V
1.8%
–
V
1.8%
+
RST
RST
V
falling; T = 25°C
V
V
V
CC
A
2.63
2.93
3.08
4.38
4.63
V
2.5%
–
V
2.5%
+
RST
RST
V
falling; T = –40° to 85°C
A
V
Reset Threshold
CC
RST
V
3.5%
–
V
3.5%
+
RST
RST
V
falling; T = –40° to 125°C
A
CC
V
falling from
CC
t
V
-to-RST Delay
(V + 100mV) to
RST
35
µs
RD
CC
(V
– 200mV) @ 1mV/µs
RST
T = –40 to +85°C
1
2
ms
ms
ms
ms
ms
ms
ms
ms
A
STM6315xAxxxx
1.5
30
T = –40 to +125°C
0.8
2.4
A
T = –40 to +85°C
20
40
A
STM6315xBxxxx
STM6315xDxxxx
STM6315xGxxxx
T = –40 to +125°C
16
48
A
RST Pulse
Width
(2)
t
rec
T = –40 to +85°C
140
112
1120
896
280
336
2240
2688
A
210
T = –40 to +125°C
A
T = –40 to +85°C
A
1680
60
T = –40 to +125°C
A
Reset Threshold Temperature
Coefficient
ppm/
°C
14/21
Rev 2.0
STM6315
Table 4.
DC and AC Parameters
DC and AC Characteristics
Description
Alter-
native
(1)
Sym
Test Condition
Min
Typ
Max
Unit
Manual Reset Input
V
V
V
V
> 4.0V
< 4.0V
> 4.0V
< 4.0V
0.8
V
V
RST
RST
RST
RST
V
MR Low Input Threshold
MR Low Input Threshold
IL
0.3V
CC
2.4
V
V
IH
0.7V
V
CC
MR Input Pulse Width
MR Glitch Rejection
MR-to-RST Delay
1
µs
ns
ns
kΩ
100
500
63
MR Pull-up Resistance
32
100
1. Valid for Ambient Operating Temperature: TA = –40 to 125°C; VCC = 2.5V to 5.5V (except where noted).
2. Other trec timings are offered. Minimum order quantities may apply. Contact local sales office for availability.
Rev 2.0
15/21
Package Mechanical
STM6315
6
Package Mechanical
®
In order to meet environmental requirements, ST offers these devices in ECOPACK
packages. These packages have a Lead-free second level interconnect. The category of
second Level Interconnect is marked on the package and on the inner box label, in
compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an ST trademark.
ECOPACK specifications are available at: www.st.com.
16/21
Rev 2.0
STM6315
Package Mechanical
Figure 14. SOT143-4 – 4-lead Small Outline Transistor Package Outline
E
E1
M
0.15
C A B
A1
B
1
e/2
e1
M
0.15
C A B
e
D
b2
4X
M
0.20
C A B
A2
A
C 0.10
A
3X b
C
C
θ
L1
C
L
(1)
SOT143-4z
Drawing is not to scale.
Table 5.
Symbol
SOT143-4 – 4-lead Small Outline Transistor Package Mechanical Data
mm
Min
inches
Min
Typ
Max
Typ
Max
A
A1
A2
b
–
–
0.89
0.01
0.88
0.37
0.76
0.09
2.80
2.10
1.20
–
1.12
0.10
1.02
0.51
0.94
0.18
3.04
2.64
1.40
–
–
0.035
0.001
0.035
0.015
0.030
0.004
0.110
0.083
0.047
–
0.044
0.004
0.042
0.020
0.037
0.007
0.120
0.104
0.055
–
–
–
–
–
–
b2
C
–
–
–
–
–
D
–
E
–
–
E1
e
–
–
1.92
0.20
0.55
–
0.076
0.008
0.022
–
e1
L
–
–
–
–
–
–
–
–
L1
Θ
0.40
0°
0.60
10°
0.016
0°
0.024
10°
N
4
4
Rev 2.0
17/21
Part Numbering
STM6315
7
Part Numbering
Table 6.
Ordering Information Scheme
Example:
STM6315
T
B
W1
3
F
Device Type
STM6315
Reset Threshold Voltage
L = V
= 4.63V
= 4.38V
= 3.08V
= 2.93V
= 2.63V
RST
M = V
RST
RST
RST
RST
T = V
S = V
R = V
(1)
RST Pulse Width
A = t = 1.5ms
rec
B = t = 30ms
rec
D = t = 210ms
rec
G = t = 1680ms
rec
Package
W1 = SOT143-4
Temperature Range
3 = –40 to 125°C
Shipping Method
F = ECOPACK Package, Tape & Reel
1. Other trec timings are offered. Minimum order quantities may apply. Contact local sales office for
availability.
Note:
For other options, or for more information on any aspect of this device, please contact the
ST Sales Office nearest you.
18/21
Rev 2.0
STM6315
Part Numbering
Topside Marking
Table 7.
Marking Description
Reset
RST Pulse
Width
Part Number
Output
(1)
(1)
Threshold
STM6315RA
2.63
2.63
2.93
2.63
2.63
1.5
30
Open drain RST
Open drain RST
Open drain RST
Open drain RST
Open drain RST
9RAx
9RBx
9SDx
9RDx
9RGx
STM6315RB
STM6315SD
STM6315RD
STM6315RG
210
210
1680
1. Other VRST thresholds and trec timings are offered. Minimum order quantities may apply. Contact local
sales office for availability.
Rev 2.0
19/21
Revision History
STM6315
8
Revision History
Table 8.
Document Revision History
Date
14-November-2005
08-Feb-06
Revision
Description
1.0
First edition
Update template, characteristics, marking (Figure 7, 8, 9, 10,
11; Table 4, 6, 7)
2.0
20/21
Rev 2.0
STM6315
Please Read Carefully:
Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the
right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any
time, without notice.
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