C167CS Datasheet, PDF (429/517 Pages) Infineon Technologies AG – 16-Bit Single-Chip Microcontroller

C167CS
Derivatives
System Reset
Special Operation Modes
Pins P0L.5 to P0L.2 (SMOD) select special operation modes of the C167CS during reset
(see Table 20-2). Make sure to only select valid configurations in order to ensure proper
operation of the C167CS.
Table 20-2 Definition of Special Modes for Reset Configuration
P0.5-2 (P0L.5-2) Special Mode
Notes
1111
Normal Start
Default configuration.
Begin of execution as defined via pin EA.
1110
Reserved
Do not select this configuration!
1101
Reserved
Do not select this configuration!
1100
Reserved
Do not select this configuration!
1011
Standard Bootstrap Load an initial boot routine of 32 Bytes via
Loader
interface ASC0.
1010
Reserved
Do not select this configuration!
1001
Alternate Boot
Operation not yet defined. Do not use!
1000
Reserved
Do not select this configuration!
0111
No emulation mode: Operation not yet defined. Do not use!
Alternate Start
Emulation mode: Programming mode for Flash memory via
External Host Mode external host.
(EHM)
0110
Reserved
Do not select this configuration!
0101
Reserved
Do not select this configuration!
0100
Reserved
Do not select this configuration!
0 0 XX
Reserved
Do not select this configuration!
The On-Chip Bootstrap Loader allows moving the start code into the internal RAM of
the C167CS via the serial interface ASC0. The C167CS will remain in bootstrap loader
mode until a hardware reset not selecting BSL mode or a software reset.
Default: The C167CS starts fetching code from location 00’0000_H, the bootstrap loader
is off.
User’s Manual
20-16
V2.0, 2000-07