AN2295 Freescale Semiconductor / Motorola, AN2295 Datasheet - Page 36
AN2295
Manufacturer Part Number
AN2295
Description
Developers Serial Bootloader for M68HC08 and HCS08 MCUs
Manufacturer
Freescale Semiconductor / Motorola
Datasheet
1.AN2295.pdf
(56 pages)
MCU Slave Software
MC68HC908GP
MC68HC908GP MCUs have no on-chip FLASH programming routines available. Therefore, all FLASH
programming must be done by the bootloader, as demonstrated in this section.
MC68HC908GP MCUs are primarily targeted for use with a low-cost 32.768 kHz crystal. Because the
frequency of the crystal is known, no calibration is performed, which saves MCU memory. Therefore, this
MCU uses the
Known MCU Communication Speed
method.
Figure 25
is a flowchart of the MC68HC908GP bootloader process.
Developer’s Serial Bootloader for M68HC08 and HCS08 MCUs, Rev. 6
36
Freescale Semiconductor
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