STC809 Datasheet, PDF (9/13 Pages) List of Unclassifed Manufacturers – UP Supervisor Circuits

Data Sheet
STC803/809/810-811/812/-823/824/825-6342/6343/6344/6345
µP Supervisor Circuits
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DC Electrical Characteristics
Table 4. DC Electrical Characteristics
(Vcc=V_RN+5% to 5.5V, T_A= -40~85”C, unless otherwise noted)
Symbol
Description
Test Conditions
Min Typ Max Unit
V_CC Operating Voltage Range
1.0
5.5
V
I_CC Supply Current
Vcc = 5V, No load
20
50
µA
V_IH Input High Voltage
Pin: MR, WDI
0.7 Vcc
V
V_IL Input Low Voltage
Pin: MR, WDI
STCxxxL
STCxxxM
V_RST
Reset Threshold Voltage
STCxxxT
(Note 1)
T_A= -40 ~ 85”C STCxxxS
STCxxxR
STCxxxZ
STCxxxY
0.3 Vcc V
VRN-2.5%
VRN
VRN+2.5%
4.514 4.63
4.746
4.271 4.38 4.490
3.003 3.08
2.857 2.93
3.157
3.003
V
2.564 2.63 2.696
2.262 2.32 2.378
2.145 2.20 2.255
V_RTH
Reset Threshold
Hysteresis(Note 1)
Vcc varies between V_RN±5%
70
mV
V_OH Output High Voltage
V_OL Output Low Voltage
I_LKG
Open-Drain Output
Leakage Current
Vcc ≥ 4.5V Isource=800µA
Vcc ≥ 2.7V Isource=500µA
Vcc ≥ 1.8V Isource=150µA
Vcc ≥ 4.5V Isink=3.2mA
Vcc ≥ 2.7V Isink=1.2mA
Vcc ≥ 1.2V Isink=100µA
V_CC > V_TH(MAX)
for STC803 and STC6343
Vcc-1.5
0.8 Vcc
0.8 Vcc
V
0.4
0.3
V
0.3
1
µA
V_PFT PFI Input Threshold
I_PFI
PFI Input Leakage
Current
V_PFI varies from 1.5V and 1.0V
1.20 1.25
1.30
V
±25
nA
I_WDI
Average WDI Input
Current (Note 2)
WDI connected to V_CC: 5.5V
WDI connected to GND
120
160
µA
-20
-15
r
MR pull-up resistor
(internal)
STC811/7812
STC823/824/825
STC6342/6343/6344
10
20
35
52
60
30
75
kΩ
* Valid for both RESET and RESET. V_RN is nominal reset threshold voltage.
** WDI is internally serviced within the watchdog period if WDI is left unconnected.
STC
9
Ver1.0