C509-L_97 SIEMENS [Siemens Semiconductor Group], C509-L_97 Datasheet - Page 270
C509-L_97
Manufacturer Part Number
C509-L_97
Description
8-Bit CMOS Microcontroller
Manufacturer
SIEMENS [Siemens Semiconductor Group]
Datasheet
1.C509-L_97.pdf
(290 pages)
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The bootstrap loader is sequentially working through the three phases. The addresses given in
table 10-6 allow the customer to step into the bootstrap loader in several phases.
Table 10-6
Further Bootstrap Loader Reference Addresses
Address Function
0000 H
0026 H
0035 H
0044 H
004A H
004F H
0054 H
Semiconductor Group
Main
LookFLASH1
LookFLASH2
PrepSerial
WaitHeader
Header
Jump2Mode
Description
Start the complete bootstrap loader
Phase I: Search for a functional custom program in the ext. FLASH
memory sectors A and B
Phase I: Search for a functional custom program only in the ext.
FLASH memory sector B
Phase II: Initialize the serial interface 0 and synchronize it to the host
baud rate
Phase III: Wait for the header to select the operating mode
Phase III: Check the header block information and save it in specific
registers
Phase III: Select and activate the operating mode given in register R1
10-32
Bootstrap Loader
1997-10-01
C509-L
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