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Preliminary and all contents are subject to change without prior notice.
3
CYT809
3-Pin Microprocessor
Reset Monitor
(Preliminary)
Electrical Characteristics
Vcc=5V for L/M/J ;3.3V for T/S ;3.0V for R ,TA = 25°C, unless otherwise specified.
Symbol
Parameter
Condition
Min
Typ
Max
Unit
VCC
Input Voltage
2.0
5.5
V
ICC
Supply Current
--
18
25
µA
VTH
Reset Threshold
CYT809Lxx :
CYT809Mxx :
CYT809Jxx :
CYT809Txx :
CYT809Sxx :
CYT809Rxx :
4.54
4.29
3.92
3.02
2.87
2.58
4.63
4.38
4.00
3.08
2.93
2.63
4.72
4.47
4.08
3.14
2.99
2.68
V
Reset Threshold Temperature
Coefficient
(4)
--
30
--
ppm/°C
VCC to Reset Delay VCC = VTH to (VTH –
100mV)
--
20
--
µsec
Reset Active Timeout Period
140
600
240
msec
VOL
RESET Output Voltage Low
ISINK = 3mA
--
--
0.4
V
VOH
RESET Output Voltage High
ISOURCE = 800µA
0.8VCC
--
--
V
Note 1: Exceeding the absolute maximum rating may damage the device.
Note 2: The device is not guaranteed to function outside its operating rating.
Note 3: The maximum allowable power dissipation at any TA (ambient temperature) is calculated using: PD(MAX) =
(TJ(MAX) – TA)/ΘJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature,
and the regulator will go into thermal shutdown. See “Thermal Consideration” section for details
Note 4: RESET threshold temperature coefficient is the worst case voltage change divided by the total temperature
range.
PIN DESCRIPTION:
Pin No.
Symbol
Description
1
GND
Ground
2
RESET
RESET output remains low while Vcc is below the reset voltage
threshold and for 240msec(typ) after Vcc rises above reset threshold
3
Vcc
Supply Voltage (typ.)
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