IMP1832SEMA 查看數據表（PDF） - A1 PROs co., Ltd.
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IMP1832SEMA Datasheet PDF : 7 Pages
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IMP1832
Absolute Maximum Ratings
Voltage on VCC . . . . . . . . . . . . . . . . . . . . . . . . –0.5V to 7V
Voltage on ST, TD . . . . . . . . . . . . . . . . . . . . . –0.5V to VCC + 0.5V
Voltage on PBRST, RESET, RESET . . . . . . . . –0.5V to VCC + 0.5V
Operating Temperature Range . . . . . . . . . . . –40°C to 85°C
Voltages measured with respect to ground.
These are stress ratings only and functional operation is not implied.
Soldering Temperature . . . . . . . . . . . . . . . . . . 260°C for 10 seconds
Storage Temperature . . . . . . . . . . . . . . . . . . . –55°C to 125°C
Electrical Characteristics
Unless otherwise stated, 1.2V ≤ VCC ≤ 5.5V and over the operating temperature range of –40°C to +85°C . All voltages are referenced
to ground.
Parameter
Symbol Conditions
Min
Typ
Max
Units
Supply Voltage (VCC)
VCC
1.0
5.5
V
ST and PBRST Input High Level
VIH
VCC ≥ 2.7V
2
VCC + 0.3V
V
ST and PBRST Input High Level
VIH
VCC < 2.7V
VCC - 0.4V
V
ST and PBRST Input Low Level
VIL
– 0.3
0.5
V
VCC Trip Point (TOL = GND)
VCCTP
2.80
2.88
2.97
V
VCC Trip Point (TOL = VCC)
VCCTP
2.47
2.55
2.64
V
Watchdog Time-Out Period
tTD
TD = GND
62.5
150
250
ms
Watchdog Time-Out Period
tTD
TD = VCC
500
1200
2000
ms
Watchdog Time-Out Period
tTD
TD floating
250
610
1000
ms
Output Voltage
VOH
I = –500µA, VCC < 2.7V
VCC - 0.3V VCC - 0.1V
V
Output Current
IOH
Output = 2.4V, VCC ≥ 2.7V
350
µA
Output Current
IOL
Output = 0.4V, VCC ≥ 2.7V
10
mA
Input Leakage
IIL
–1.0
1.0
µA
RESET Low Level
VOL
0.4
V
Internal Pull-Up Resistor
PBRST pin
40
kΩ
Operating Current
Input Capacitance
Output Capacitance
PBRST Manual Reset
Minimum Low Time
ICC1
Outputs open. VCC ≤ 3.6V
and all inputs at VCC or GND
CIN
COUT
tPB
PBRST = VIL
20
20
µA
5
pF
7
pF
ms
Reset Active Time
ST Pulse Width
tRST
250
610
1000
ms
tST
Must not exceed tRD minimum.
20
ns
Watchdog cannot be disabled.
VCC Fail Detect to
RESET or RESET
tRPD
Pulses < 2µs at VCCTP
minimum will not cause reset.
5
8
µs
VCC Slew Rate
PBRST Stable LOW to
RESET and RESET Active
tF
tPDLY
20
µs
20
ms
VCC Detect to RESET or
RESET Inactive
tRPU
trise = 5µs
250
610
1000
ms
VCC Slew Rate
tR
0
ns
© 1999 IMP, Inc.
408-432-9100/www.impweb.com
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