MEC1404 Datasheet, PDF (510/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

MEC140X/1X
43.8 8042 Emulation CPU_Reset Timing
FIGURE 43-5:
CPU_RESET TIMING
t_{d elay}
t _{a c tiv e}
TABLE 43-9: CPU_RESET TIMING PARAMETERS
NAME
DESCRIPTION
MIN
TYP
MAX
UNITS
t_delay
Delay prior to active pulse
14
15
15.5
s
t_active
Active pulse width
6
8
8.5
s
Note 43-9
Note 43-10
FIGURE 43-5: and TABLE 43-9: refer to in which CPU_RESET is the inverse of ALT_RST# &
KRESET.
The KBRST pin function is the output of CPU_RESET described in Section 16.11.2, "CPU_RESET
Hardware Speed-Up," on page 260.
DS00001956D-page 510
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