mc68hc08qa24 Freescale Semiconductor, Inc, mc68hc08qa24 Datasheet - Page 137

• Manufacturer Part Number: mc68hc08qa24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

10.4.1 External Pin Reset
MC68HC08QA24
Freescale Semiconductor
CGMOUT
RST
IAB
PC
Pulling the asynchronous RST pin low halts all processing. The PIN bit
of the SIM reset status register (SRSR) is set as long as RST is held low
for a minimum of 67 CGMXCLK cycles, assuming that neither the POR
nor the LVI was the source of the reset. See
Figure 10-4
Figure 10-4. External Reset Timing
System Integration Module (SIM)
Reset Type
All Others
POR/LVI
shows the relative timing.
Table 10-2. PIN Bit Set Timing
Number of Cycles Required to Set PIN
VECT H
4163 (4096 + 64 + 3)
VECT L
67 (64 + 3)
System Integration Module (SIM)
Table 10-2
for details.
Technical Data
135