SAF-C164SM Infineon Technologies, SAF-C164SM Datasheet - Page 382
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SAF-C164SM
Manufacturer Part Number
SAF-C164SM
Description
16-Bit CMOS Microcontroller
Manufacturer
Infineon Technologies
Datasheet
1.SAF-C164SM.pdf
(470 pages)
- Current page: 382 of 470
- Download datasheet (6Mb)
Reset Output Pin
The RSTOUT pin generates a reset signal for the system components other than the
controller. RSTOUT will be driven active (low) at the begin of any reset sequence
(triggered by hardware, the SRST instruction, or a watchdog timer overflow). RSTOUT
stays active (low) beyond the end of the internal reset sequence until the protected EINIT
(End of Initialization) instruction is executed (see
configuration of the controller including its on-chip peripheral units before releasing the
reset signal for the external peripherals of the system.
Note: RSTOUT remains active low when Port 20 is initially enabled. The output level can
The Internal RAM after Reset
The contents of the internal RAM are not affected by a system reset. However, after a
power-on reset, the contents of the internal RAM are undefined. This implies that the
GPRs (R15 … R0) and the PEC source and destination pointers (SRCP7 … SRCP0,
DSTP7 … DSTP0) which are mapped into the internal RAM are also unchanged after a
warm reset, software reset, or watchdog reset, but are undefined after a power-on reset.
Operation after Reset
After the internal reset condition is removed, the C164CM fetches the first instruction
from the program memory (location 00’0000
location holds a branch instruction to the actual initialization routine that may be located
anywhere in the address space.
Note: If the Bootstrap Loader Mode was activated during a hardware reset, the C164CM
User’s Manual
be changed to high, or the pin can be switched to input via the port control
registers P20 and DP20.
RSTOUT will float during emulation mode or adapt mode.
does not fetch instructions from the program memory.
The standard bootstrap loader expects data via serial interface ASC0.
20-8
H
for a standard start). As a rule, this first
Figure
20-3). This allows the complete
C164CM/C164SM
System Reset
Derivatives
V1.0, 2002-02
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