STM6905SFEDS6E [STMICROELECTRONICS]
Quintuple, ultralow voltage supervisor with push-button reset; 五元组,超低电压监控器与按钮复位型号: | STM6905SFEDS6E |
厂家: | ST |
描述: | Quintuple, ultralow voltage supervisor with push-button reset |
文件: | 总19页 (文件大小:176K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
STM6905
Quintuple, ultralow voltage supervisor
with push-button reset
Features
■ Quintuple voltage monitoring
■ Accurate 1ꢀ8% across temperature voltage
threshold ( 1% at 25°C)
■ Primary supply (V ) monitorꢀ Fixed (factory -
CC
programmed) reset thresholds: 3ꢀ078 V to
2ꢀ866 V
■ Second fixed (V2IN) monitorꢀ Fixed (factory-
programmed) reset thresholds: 2ꢀ333 V to
1ꢀ050 V
MSOP8
(TSSOP8) (DS)
■ Three additional adjustable supply monitor
inputs (externally adjustable)
■ 600 mV internal reference
■ RST output (open drain)
■ Output guaranteed for V ≥ 0ꢀ8 V
CC
■ Reset delay time (t ) on power-up: 210 ms
rec
(typ)
Applications
■ Manual reset input (MR)
■ Low supply current of 12 µA (typ)
■ Power supply voltage 0ꢀ8 V to 5ꢀ5 V
■ RoHS compliant (green package)
■ 8-pin MSOP/TSSOP
■ Set-top boxes
■ Multi-voltage systems
■ Cable/satellite applications
■ Computer systems
■ Data storage equipment
■ Operating temperature: –40°C to 85°C
(industrial grade)
(1)
Table 1.
Device summary
Order code
VRST1 (V)
VRST2 (V)
tREC (ms)
Package
STM6905TZEDS6F
STM6905TWEDS6F
STM6905TGEDS6F
STM6905SYEDS6F
STM6905SFEDS6F
STM6905PWEDS6F
3ꢀ078
3ꢀ078
3ꢀ078
2ꢀ955
2ꢀ955
2ꢀ866
2ꢀ333
1ꢀ683
1ꢀ110
2ꢀ188
1ꢀ050
1ꢀ683
210
210
210
210
210
210
MSOP8(TSSOP8)
MSOP8(TSSOP8)
MSOP8(TSSOP8)
MSOP8(TSSOP8)
MSOP8(TSSOP8)
MSOP8(TSSOP8)
1ꢀ Other reset threshold voltages and tREC time-out periods are offeredꢀ Minimum order quantities may applyꢀ Contact local
ST sales office for availabilityꢀ
January 2008
Rev 3
1/19
www.st.com
1
Contents
STM6905
Contents
1
2
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2ꢀ1
2ꢀ2
2ꢀ3
2ꢀ4
2ꢀ5
2ꢀ6
Push-button reset input (MR) ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 7
CC primary supply voltage monitoring input ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 7
V2IN second fixed voltage monitoring input ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 7
VSS
V
ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 7
V3IN, V4IN, and V5IN ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 7
RST active-low, open drain reset output ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 7
3
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3ꢀ1
3ꢀ2
Setting the adjustable voltage levels for V3IN, V4IN, and V5IN inputs ꢀ ꢀ ꢀ ꢀ 9
Power on reset (tREC) ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 9
4
Voltage monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Package marking information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5
6
7
8
9
10
2/19
STM6905
List of tables
List of tables
Table 1ꢀ
Table 2ꢀ
Table 3ꢀ
Table 4ꢀ
Table 5ꢀ
Table 6ꢀ
Table 7ꢀ
Table 8ꢀ
Device summaryꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 1
Signal names and functions ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 6
Absolute maximum ratings ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 11
DC and AC characteristics ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 12
TSSOP 8-lead package mechanical dataꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 15
Ordering information scheme ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 16
Marking descriptionꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 17
Document revision history ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 18
3/19
List of figures
STM6905
List of figures
Figure 1ꢀ
Figure 2ꢀ
Figure 3ꢀ
Figure 4ꢀ
Figure 5ꢀ
Figure 6ꢀ
Figure 7ꢀ
Logic diagram ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 5
MSOP/TSSOP-8 connectionsꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 5
Functional block diagram ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 8
Typical hardware hookup application diagram ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 8
MR timing waveforms ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 10
Voltage monitoring diagram ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 10
TSSOP8, 3 x 3mm, package mechanical outline ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 14
4/19
STM6905
Description
1
Description
The STM6905 supervisor is a low voltage/low supply current processor supervisor,
designed to monitor up to five system power supply voltagesꢀ This device is targeted at
applications such as set-top boxes (STBs), portable, battery-powered systems, networking
and communication systemsꢀ
The device supports a push-button type manual reset input (MR)ꢀ Two of the five supply
monitors (V and V2IN) have fixed (customer-selectable, factory-trimmed) thresholds
CC
(V
and V
)ꢀ The other three voltage monitor inputs (V3IN, V4IN and V5IN) are
RST1
RST2
monitored using externally adjustable threshold (600 mV internal reference) to meet specific
level requirementsꢀ
If any of the five monitored voltages drops below its factory-trimmed or adjustable
thresholds, or if the MR is asserted to logic low, the reset output RST is asserted (driven
low)ꢀ Once asserted, RST is maintained Low for a minimum delay period (trec) after ALL
monitored supplies rise above their respective thresholds and MR returns to Highꢀ Reset
output logic state is valid for V greater than 0ꢀ8 Vꢀ
CC
The STM6905 is available in a standard 8-lead MSOP (TSSOP) packageꢀ
Figure 1.
Logic diagram
V
CC
V2IN
V3IN
STM6905
V4IN
V5IN
RST
MR
V
SS
ai13970
Figure 2.
MSOP/TSSOP-8 connections
RST
MR
1
2
3
4
8
7
6
5
V
V5IN
V4IN
V3IN
CC
V2IN
V
SS
ai13971
5/19
Description
STM6905
Table 2.
Pin
Signal names and functions
Name
Type
Function
1
2
MR
Input
Active-low manual reset input with internal pull-up resistor
Primary supply voltage input and integrated fixed threshold under-
voltage monitor
VCC
Supply
3
4
5
6
7
8
V2IN
VSS
Input
Supply
Input
Second fixed threshold input monitor
Ground
V3IN
V4IN
V5IN
RST
Adjustable third reset comparator input
Adjustable fourth reset comparator input
Adjustable fifth reset comparator input
Active-low open-drain reset output (10k ohm internal pull-up)
Input
Input
Output
6/19
STM6905
Pin descriptions
2
Pin descriptions
2.1
Push-button reset input (MR)
When MR goes low the RST output is driven low, RST remains low as long as MR is low and
for t after MR returns to highꢀ The active-low input has an internal 10k ohm pull-up
REC
resistor to V ꢀ It can be driven from a TTL or CMOS logic line, or with open drain/collector
CC
outputs, or connected to V through a switchꢀ If unused, leave this pin open or connect it to
SS
V
ꢀ
CC
Connect a normally open momentary switch from MR to V ; external debounce circuitry is
SS
not requiredꢀ (If MR is driven from long cables or if the device is used in noisy environments,
connecting a 0ꢀ1uF capacitor from MR to V provides additional noise immunity)ꢀ
SS
2.2
2.3
VCC primary supply voltage monitoring input
The V pin is also the input for the primary reset threshold monitorꢀ Fixed (customer-
CC
selectable, factory programmed) reset thresholds include 3ꢀ078 V to 2ꢀ866 Vꢀ
V2IN second fixed voltage monitoring input
The V2IN input is the second fixed-voltage input for reset threshold monitoringꢀ Available
fixed (customer-selectable, factory programmed) reset thresholds include 2ꢀ333 V to
1ꢀ050 Vꢀ
2.4
2.5
VSS
This pin is the ground pin for the power supplyꢀ
V3IN, V4IN, and V5IN
The V3IN, V4IN and V5IN are high impedance inputsꢀ RST is driven low when the voltage
(VTRIP) at the pin falls below 600 mV (internal reference voltage at their respective
comparators)ꢀ The monitored voltage reset threshold is set with an external resistor-divider
networkꢀ
2.6
RST active-low, open drain reset output
The reset output (RST) pin is driven low and stays low whenever V or V2IN, or V3IN, or
CC
V4IN, or V5IN falls below its factory-trimmed or adjustable reset threshold or when MR
goes to logic lowꢀ It remains low for trec after all supply voltages being monitored rise above
their reset thresholds and MR goes from low to highꢀ Connect an external pull-up resistor to
V
ꢀ A 10k ohms pull-up resistor should be sufficient for most applicationsꢀ
CC
7/19
Pin descriptions
STM6905
Figure 3.
Functional block diagram
V
CC
COMPARE
COMPARE
COMPARE
COMPARE
COMPARE
V
V
RST1
V2IN
RST2
V3IN
V4IN
t
rec
Generator
RST
V
V
= 0ꢀ6V
= 0ꢀ6V
REF
REF
V5IN
MR
V
REF
= 0ꢀ6V
V
CC
(1)
ai13970
1ꢀ Internal pull-up on MR input of 10k ohm (typ)ꢀ
Figure 4.
Typical hardware hookup application diagram
From DC/DC Converter
V
V
CC2
CC1
R1 + R2
R2
R3 + R4
V
=
=
(600mV)
(600mV)
V
TRIP
(
(
(
)
)
)
CC
V
V
TRIP
TRIP
0ꢀ1 F
R4
STM6905
R5 + R6
R6
=
(600mV)
VIN2
V
CC3
0ꢀ1 F
RST
RST (To Processor Reset)
R1
VIN3
VIN4
V
CC4
R2
R3
R4
MR
Push-button
Switch
V
CC5
R5
R6
VIN5
V
SS
ai13973
8/19
STM6905
Operation
3
Operation
The STM6905 provides the ability to monitor critical voltages such as power-supply and
battery voltage levels, while interfacing easily to the system controllers/microprocessorsꢀ
Figure 4 shows typical hardware hookup for monitoring five voltages; two fixed thresholds
(customer-selectable, factory-programmed ) and three adjustable monitor inputsꢀ RST
output is open drain and requires a 10k ohms pull-up resistor tied to V
ꢀ
CC
3.1
Setting the adjustable voltage levels for V3IN, V4IN, and V5IN
inputs
The user can customize the minimum voltage levels for the three adjustable voltage inputs
by connecting an external resistor divider network to the V3IN, V4IN and V5IN pins in order
to set the trip point at some voltage above the 600 mv (V
formulaꢀ
) according to the following
REF
R1+ R2
R2
VTRIP = 0.6V ×
During normal operation, the STM6905 monitors the voltage levels at all the five pins (Vcc,
V2IN, V3IN, V4IN and V5IN)ꢀ
3.2
Power on reset (tREC)
On power up, the STM6905 activates a power on reset circuit which asserts the reset pin
(iꢀeꢀ RST goes low)ꢀ The RST signal remains active until V (and V2IN, V3IN, V4IN, V5IN
CC
and MR) rises above the minimum voltage level for the time period t
that the supply voltage has stabilized to sufficient operating levelsꢀ
thereby ensuring
REC
9/19
Voltage monitoring
STM6905
4
Voltage monitoring
Figure 5.
MR timing waveforms
t
MLMH
MR
t
MLMR
RST
t
REC
ai13974
Figure 6.
Voltage monitoring diagram
V
,
VXIN
CC
V
V
,
RST1/2
RSTIN
tRD
t
rec
RST
ai13975
10/19
STM6905
Maximum rating
5
Maximum rating
Stressing the device above the rating listed in the "Absolute maximum ratings" table may
cause permanent damage to the deviceꢀ 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 impliedꢀ Exposure to absolute maximum rating conditions for
extended periods may affect device reliabilityꢀ Refer also to the STMicroelectronics SURE
Program and other relevant quality documentsꢀ
Table 3.
Symbol
TSTG
Absolute maximum ratings
Parameter
Value
Unit
Storage temperature (VCC off)
Lead solder temperature for 10 seconds
Input or output voltage
-55 to +150
260
°C
°C
(1)
TSLD
VIO
VCC
IO
-0ꢀ3 to VCC +0ꢀ3
-0ꢀ3 to 7ꢀ0
20
V
Supply voltage
V
Output current
mA
°C/W
θJA
Thermal resistance (junction to ambient)
146
1ꢀ Reflow at peak temperature of 255°C to 260°C for < 30 seconds (total thermal budget not to exceed
180°C for between 90 to 150 seconds)ꢀ
11/19
DC and AC parameters
STM6905
6
DC and AC parameters
This section summarizes the operating measurement conditions and the DC and AC
characteristics of the deviceꢀ Designers should check that the operating conditions in their
circuit match the operating conditions when relying on the quoted parametersꢀ
Table 4.
Sym
DC and AC characteristics
Alter-
Description
Operating voltage
VCC supply current
V2IN supply curent
Test condition(1)
Min
Typ
Max
Unit
V
native
VCC
ICC
0ꢀ8
5ꢀ5
16
15
5
VCC < 5ꢀ5 V
12
11
3
µA
VCC = 3ꢀ3 V
V2IN = 3ꢀ3 V
I2IN
ILI
µA
µA
Input leakage current -
(MR)(2)
VIN = VCC or VSS
-0ꢀ5
-0ꢀ5
+0ꢀ5
+0ꢀ5
VCC > VRST;
Open drain RST output
leakage current
(3)
ILO
µA
RST not asserted
VCC ≥ 0ꢀ8V, ISINK = 1 µA
VCC ≥ 1ꢀ0V, ISINK = 50 µA
VCC ≥ 1ꢀ2V, ISINK = 100 µA
VCC ≥ 2ꢀ7V, ISINK = 1ꢀ2 mA
VCC ≥ 4ꢀ5V, ISINK = 3ꢀ2 mA
0ꢀ3
V
V
V
V
V
V
0ꢀ3
Output low voltage
(RST; open drain)
VOL
0ꢀ3
0ꢀ3
0ꢀ4
25°C
T (falling)
3ꢀ047
3ꢀ023
2ꢀ925
2ꢀ902
2ꢀ837
2ꢀ814
2ꢀ310
2ꢀ291
2ꢀ166
2ꢀ149
1ꢀ666
1ꢀ653
1ꢀ099
1ꢀ090
1ꢀ040
1ꢀ031
3ꢀ078
2ꢀ955
2ꢀ866
2ꢀ333
2ꢀ188
1ꢀ683
1ꢀ110
1ꢀ050
3ꢀ109
3ꢀ133
2ꢀ985
3ꢀ008
2ꢀ895
2ꢀ918
2ꢀ356
2ꢀ375
2ꢀ210
2ꢀ227
1ꢀ700
1ꢀ713
1ꢀ121
1ꢀ130
1ꢀ061
1ꢀ069
-40°C to 85°C
25°C
S (falling)
V
V
V
V
V
V
V
(4)
VRST1
VTH1 VCC reset threshold
-40°C to 85°C
25°C
P (falling)
-40°C to 85°C
25°C
Z (falling)
-40°C to 85°C
25°C
Y (falling)
-40°C to 85°C
25°C
W (falling)
(4)
VRST2
VTH2 V2IN reset threshold
-40°C to 85°C
25°C
G (falling)
-40°C to 85°C
25°C
F (falling)
-40°C to 85°C
12/19
STM6905
DC and AC parameters
Table 4.
Sym
DC and AC characteristics (continued)
Alter-
Description
Test condition(1)
Min
Typ
Max
Unit
native
Reset threshold
hysteresis
Referenced to VRST1/VRST2
typical
VHYST
0ꢀ5
20
20
%
µs
µs
VCC = (VRST1 + 100 mV) to
(VRST1 – 100 mV)
tRD
VCC to RST delay
V2IN = (VRST2 + 75 mV) to
(VRST2 – 75 mV)
Option B(5)
Option C(5)
Option E
20
80
30
40
ms
ms
ms
ms
120
210
420
180
280
560
tREC
tRP
RST time-out period
140
280
Option F(5)
Adjustable reset comparator input (V3IN, V4IN, V5IN)
V3IN, V4IN, V5IN input
threshold
VRSTIN
589
–25
600
611
+25
mV
nA
mV
µs
V3IN, V4IN, V5IN input
current
IRSTIN
V3IN, V4IN, V5IN > 0ꢀ8 V
V3IN, V4IN, V5IN
hysteresis
3
V3IN, V4IN, V5IN to
RST output delay
tRSTIND
VRSTIN to (VRSTIN – 30 mV)
22
Manual (push-button) reset input
VIL
0ꢀ3 x VCC
V
V
MR input voltage
VIH
0ꢀ7 x VCC
1
MR minimum pulse
width
tMLMH
tMLRL
tMR
µs
tMRD MR to RST output delay
MR glitch immunity
200
100
10
ns
ns
MR pull-up resistance
kΩ
1ꢀ Valid for ambient operating temperature: TA = –40°C to +85°C; VCC = 0ꢀ8 V to 5ꢀ5 V (except where noted)ꢀ
2ꢀ 10k ohm (typ) internal pull-up resistorꢀ
3ꢀ The leakage current measured on the RST pin is tested with the reset de-asserted (output high impedance)ꢀ
4ꢀ Other reset threshold voltages are offeredꢀ Minimum order quantities may applyꢀ Contact local sales office for availabilityꢀ
5ꢀ Other tREC time-out periods are offeredꢀ Minimum order quantities may applyꢀ Contact local sales office for availabilityꢀ
13/19
Package mechanical data
STM6905
7
Package mechanical data
®
In order to meet environmental requirements, ST offers these devices in ECOPACK
packagesꢀ These packages have a lead-free second level interconnectꢀ The category of
second level interconnect is marked on the package and on the inner box label, in
compliance with JEDEC Standard JESD97ꢀ The maximum ratings related to soldering
conditions are also marked on the inner box labelꢀ ECOPACK is an ST trademarkꢀ
ECOPACK specifications are available at: wwwꢀstꢀcomꢀ
Figure 7.
TSSOP8, 3 x 3mm, package mechanical outline
D
8
1
5
4
c
E1
E
k
A1
L
L2
A
A2
L1
ccc
b
e
E3_ME
14/19
STM6905
Package mechanical data
Table 5.
Symbol
TSSOP 8-lead package mechanical data
mm
inches
Min
Typ
Max
Min
Typ
Max
A
A1
A2
b
1ꢀ100
0ꢀ15
0ꢀ95
0ꢀ40
0ꢀ23
0ꢀ10
3ꢀ20
0ꢀ043
0ꢀ006
0ꢀ037
0ꢀ016
0ꢀ009
0ꢀ004
0ꢀ126
0ꢀ00
0ꢀ75
0ꢀ22
0ꢀ08
0ꢀ000
0ꢀ030
0ꢀ009
0ꢀ003
0ꢀ85
0ꢀ034
c
ccc
D
2ꢀ80
3ꢀ00
0ꢀ65
4ꢀ90
3ꢀ00
0ꢀ60
0ꢀ95
0ꢀ25
4
0ꢀ110
0ꢀ118
0ꢀ026
0ꢀ193
0ꢀ118
0ꢀ024
0ꢀ037
0ꢀ010
4
e
E
4ꢀ65
2ꢀ80
0ꢀ40
5ꢀ15
3ꢀ10
0ꢀ80
0ꢀ183
0ꢀ110
0ꢀ016
0ꢀ203
0ꢀ122
0ꢀ032
E1
L
L1
L2
k
0°
6°
0°
6°
N
8
8
15/19
Part numbering
STM6905
8
Part numbering
Table 6.
Ordering information scheme
STM6905
Example:
TZ
E
DS
6
F
Device type
STM6905
Reset threshold voltages(1)
Suffix VRST1
VRST2
2ꢀ333
1ꢀ683
1ꢀ110
1ꢀ050
1ꢀ050
1ꢀ683
TZ
3ꢀ078
3ꢀ078
3ꢀ078
2ꢀ955
2ꢀ955
2ꢀ866
TW
TG
SY
SF
PW
tREC
B = 30 ms(1)
C = 120 ms(1)
E = 210 ms
F = 420 ms(1)
Package
DS = MSOP8 (TSSOP8)
Temperature range
6: -40°C to 85°C
Shipping method
E = ECOPACK® package, tubes
F = ECOPACK® package, tape & reel
1ꢀ Other reset threshold voltages and tREC time-out periods are offeredꢀ Minimum order quantities may
applyꢀ Contact local sales office for availabilityꢀ
16/19
STM6905
Package marking information
9
Package marking information
Table 7.
Marking description
Part marking
VRST1 (V)
VRST2 (V)
Package
Topside marking
STM6905TZEDS6F
STM6905TWEDS6F
STM6905TGEDS6F
STM6905SYEDS6F
STM6905SFEDS6F
STM6905PWEDS6F
3ꢀ078
3ꢀ078
3ꢀ078
2ꢀ955
2ꢀ955
2ꢀ866
2ꢀ333
1ꢀ683
1ꢀ110
2ꢀ188
1ꢀ050
1ꢀ683
MSOP (TSSOP8)
MSOP (TSSOP8)
MSOP (TSSOP8)
MSOP (TSSOP8)
MSOP (TSSOP8)
MSOP (TSSOP8)
STZE
STWE
STGE
SSYE
SSFE
SPWE
17/19
Revision history
STM6905
10
Revision history
Table 8.
Date
Document revision history
Revision
Changes
19-Dec-2007
23-Jan-2008
28-Jan-2008
1
2
3
Initial releaseꢀ
Document status upgraded to full datasheetꢀ
Updated cover page, Figure 6, and Table 4ꢀ
18/19
STM6905
Please Read Carefully:
Information in this document is provided solely in connection with ST productsꢀ 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 noticeꢀ
All ST products are sold pursuant to ST’s terms and conditions of saleꢀ
Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no
liability whatsoever relating to the choice, selection or use of the ST products and services described hereinꢀ
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this documentꢀ If any part of this
document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products
or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such
third party products or services or any intellectual property contained thereinꢀ
UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED
WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS
OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT
RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING
APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY,
DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE
GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN RISK.
Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void
any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any
liability of STꢀ
ST and the ST logo are trademarks or registered trademarks of ST in various countriesꢀ
Information in this document supersedes and replaces all information previously suppliedꢀ
The ST logo is a registered trademark of STMicroelectronicsꢀ All other names are the property of their respective ownersꢀ
© 2008 STMicroelectronics - All rights reserved
STMicroelectronics group of companies
Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -
Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America
www.st.com
19/19
相关型号:
©2020 ICPDF网 联系我们和版权申明