APX823 Datasheet, PDF (6/12 Pages) Diodes Incorporated – PROCESSOR SUPERVISORY CIRCUITS

APX823/APX824/APX825A
PROCESSOR SUPERVISORY CIRCUITS
Timing requirements (at R_L=1mΩ, C_L=50pF, T_A=25^oC)
Symbol
Parameter
Test Conditions
Min
t_W
Pulse
Width
at MR ^{VCC> VTH-+0.2V, VIL=0.3 × VCC, VIH=0.7 × VCC 100}
at WDI V_CC> V_TH-+0.2V, V_IL=0.3 × V_CC, V_IH=0.7 × V_CC 50
Typ.
-
-
Max Unit
-
ns
-
ns
Switching Characteristics (at R_L=1mΩ, C_L=50pF, T_A=25^oC)
Symbol
t_tout
t_d
t_PHL
t_PLH
Parameter
Watchdog Time Out APX823/APX824/APX825A
Delay Time
APX823/APX824/APX825A
Propagation (Delay)
Time,
High-to-low-level
Output
MR to RESET
delay (APX823/APX825A)
V_CC to RESET delay
Propagation (Delay)
Time,
Low-to-high-level
Output
MR to RESET delay
(APX824/APX825A)
V_CC to RESET delay
(APX824/APX825A)
Test Conditions
V_CC> V_TH-+0.2V,
See timing diagram
V_CC> V_TH-+0.2V,
See timing diagram
V_CC> V_TH-+0.2V,
V_IL=0.3 × V_CC,
V_IH=0.7 × V_CC
V_IL= V_TH--0.2V,
V_IH= V_TH-+0.2V
V_CC> V_TH-+0.2V,
V_IL=0.3 × V_CC,
V_IH=0.7 × V_CC
V_IL= V_TH--0.2V,
V_IH= V_TH-+0.2V
Min Typ. Max Unit
1.12 1.6 2.4 s
140 200 280 ms
- - 0.1 μs
- - 25 μs
- - 0.1 μs
- - 25 μs
APX823/APX824/APX825A Rev. 3
6 of 12
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FEBRUARY 2009
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