參數(shù)資料
型號(hào): TC70
廠商: TelCom Semiconductor, Inc.
英文描述: MICROMASTER - SYSTEM SUPERVISOR WITH POWER SUPPLY MONITOR, WATCHDOG AND BATTERY BACKUP
中文描述: MICROMASTER -系統(tǒng)與電源監(jiān)視器,看門狗和電池備份督導(dǎo)員
文件頁(yè)數(shù): 3/7頁(yè)
文件大小: 89K
代理商: TC70
5-9
TELCOM SEMICONDUCTOR, INC.
7
6
5
4
3
1
2
8
ELECTRICAL CHARACTERISTICS:
(Cont.)
DC
: Battery Backup and Threshold Detector:
T
A
= T
MIN
to T
MAX
, V
CC
= 4.5V to 5.5V, unless otherwise specified.
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
I
OUT1
I
OUT2
V
CCO
Output Current
V
CCO
Output Current in
Battery Backup Mode
Battery Switchover Threshold
(V
CC
Falling)
Battery Switchover Hysteresis
CEO Output Voltage in
Battery Backup Mode
Threshold Detector Trip Voltage
Threshold Detector Input Current
Threshold Detector Hysteresis
V
CC
= 4.5V, V
CCO
= 3.5V
V
CCO
= V
BATT
– 0.3V
V
BATT
= 2.8V
50
500
100
mA
μ
A
V
SW
V
BATT
– 0.01
V
V
HYST
VOH
CEO
20
mV
V
V
CC
< V
BATT
– 0.2, V
BATT
= 2.8V
I
OH
= 10
μ
A
V
BATT
– 0.2
V
TDI
I
TDI
V
TDI (HYST)
1.2
–25
10
1.4
+25
V
nA
mV
T
A
= 25
°
C
ELECTRICAL CHARACTERISTICS:
AC
: Power Supply Monitor, EXT. RESET and Watchdog:
T
A
= T
MIN
to T
MAX
, V
CC
= 4.5V to 5.5V, unless otherwise
specified.
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
t
PBH
t
RST
t
ST
t
TD
t
RPD
PB Hold Time
Reset Active Time
RS STROBE Pulsewidth
Watchdog Timeout Period
V
CC
Detect to RS LOW
Figure 4 (Note 4)
Figure 6
Figure 3
Figure 3
Figure 6
20
500
500
500
700
900
900
100
msec
msec
nsec
msec
nsec
ELECTRICAL CHARACTERISTICS:
AC
: Battery Backup and Threshold Detector:
T
A
= T
MIN
to T
MAX
, V
CC
= 4.5V to 5.5V, unless otherwise specified.
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
t
PD
CE Propagational Delay
Figure 7
50
nsec
ELECTRICAL CHARACTERISTICS:
AC
:
T
A
= T
MIN
to T
MAX
.
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
t
F
V
CC
Fall Time From
4.25V to 3.0V
V
CC
Rise Time From
3.0V to 4.25V
Figure 5 (Note 1)
10
μ
sec
t
R
Figure 5 (Note 1)
0
μ
sec
NOTES:
1. All voltages referenced to ground.
2. No output load.
3
Measured with V
CCO
and CEO open.
4. The RS output must be held low for a minimum of 20msec to guarantee a reset.
TC70/71
MICROMASTER – SYSTEM SUPERVISOR
WITH POWER SUPPLY MONITOR, WATCHDOG
AND BATTERY BACKUP
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