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MC9S08GB60 Datasheet, PDF (236/290 Pages) Motorola, Inc – Microcontrollers | |||
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Development Support
15.2 Features
Features of the background debug controller (BDC) include:
⢠Single pin for mode selection and background communications
⢠BDC registers are not located in the memory map
⢠SYNC command to determine target communications rate
⢠Non-intrusive commands for memory access
⢠Active background mode commands for CPU register access
⢠GO and TRACE1 commands
⢠BACKGROUND command can wake CPU from stop or wait modes
⢠One hardware address breakpoint built into BDC
⢠Oscillator runs in stop mode, if BDC enabled
⢠COP watchdog disabled while in active background mode
Features of the debug module (DBG) include:
⢠Two trigger comparators:
â Two address + read/write (R/W) or
â One full address + data + R/W
⢠Flexible 8-word by 16-bit FIFO (ï¬rst-in, ï¬rst-out) buffer for capture information:
â Change-of-ï¬ow addresses or
â Event-only data
⢠Two types of breakpoints:
â Tag breakpoints for instruction opcodes
â Force breakpoints for any address access
⢠Nine trigger modes:
â A-only
â A OR B
â A then B
â A AND B data (full mode)
â A AND NOT B data (full mode)
â Event-only B (store data)
â A then event-only B (store data)
â Inside range (A ⤠address ⤠B)
â Outside range (address < A or address > B)
MC9S08GB/GT Data Sheet, Rev. 2.3
236
Freescale Semiconductor
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