STC809 Datasheet, PDF (10/13 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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AC Electrical Characteristics
Table 5. AC Electrical Characteristics
Sym
Descr iption
t_RS
Reset Pulse Width
t_WD
Watchdog Timeout Period
t_MR
MR Pulse Width
t_MD
MR to RESET Delay
t_WP
WDI Pulse Width
Test Conditions
MR from low to High
WDI and MR tied to V_CC,
V_CC > V_RN + 5%
V_CC = 5.0V
Min
Typ
Max Units
140
200
280
ms
1.12
1.6
2.25
s
1
µs
250
ns
50
ns
Figure 4. Watchdog Timing Diagram
V _CC
RESET
V _RST
V _RST
t_RS
t_WD
t_RS
t_RS
RESET
WDI
MR
t_WP
t_{M D}
t_MR
STC
10
Ver1.0