Auto Page CPX-3600 Especificaciones Pagina 207

  • Descarga
  • Añadir a mis manuales
  • Imprimir
  • Pagina
    / 243
  • Tabla de contenidos
  • MARCADORES
  • Valorado. / 5. Basado en revisión del cliente
Vista de pagina 206
ST72321xx-Auto Electrical characteristics
Doc ID 13829 Rev 1 207/243
19.9 Control pin characteristics
19.9.1 Asynchronous RESET pin
Subject to general operating conditions for V
DD
, f
CPU
, and T
A
unless otherwise specified.
Table 128. Asynchronous RESET pin characteristics
Symbol Parameter Conditions Min Typ Max Unit
V
IL
Input low level voltage
(1)
0.16xV
D
D
V
V
IH
Input high level voltage
(1)
0.85xV
D
D
V
hys
Schmitt trigger voltage
hysteresis
(2)
2.5
V
OL
Output low level voltage
(3)
V
DD
=5V, I
IO
= +2mA 0.2 0.5
I
IO
Input current on RESET pin 2 mA
R
ON
Weak pull-up equivalent resistor 20 30 120 k
t
w(RSTL)out
Generated reset pulse duration
Stretch applied on external pulse 0 42
(4)
µsInternal reset sources 20 30 42
(4)
t
h(RSTL)in
External reset pulse hold time
(5)
2.5
t
g(RSTL)in
Filtered glitch duration
(6)
200 ns
1. Data based on characterization results, not tested in production.
2. Hysteresis voltage between Schmitt trigger switching levels.
3. The I
IO
current sunk must always respect the absolute maximum rating specified in Section 19.2.2 and the sum of I
IO
(I/O
ports and control pins) must not exceed I
VSS
.
4. Data guaranteed by design, not tested in production.
5. To guarantee the reset of the device, a minimum pulse has to be applied to the RESET
pin. All short pulses applied on the
RESET pin with a duration below t
h(RSTL)in
can be ignored.
6. The reset network (the resistor and two capacitors) protects the device against parasitic resets, especially in noisy
environments.
Vista de pagina 206
1 2 ... 202 203 204 205 206 207 208 209 210 211 212 ... 242 243

Comentarios a estos manuales

Sin comentarios