S9S12G48F0MLH Freescale Semiconductor, S9S12G48F0MLH Datasheet - Page 346

• Manufacturer Part Number: S9S12G48F0MLH
• Description: 16-bit Microcontrollers - MCU 16Bit 48KFlash 4096RAM MSCAN
• Manufacturer: Freescale Semiconductor

Specifications of S9S12G48F0MLH

• Rohs: yes
• Core: S12
• Processor Series: MC9S12G
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 25 MHz
• Program Memory Size: 48 KB
• Data Ram Size: 2 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 3.13 V to 5.5 V
• Operating Temperature Range: - 40 C to + 125 C
• Package / Case: LQFP-64
• Mounting Style: SMD/SMT

S12S Debug Module (S12SDBGV2)
If the comparator register contents coincide with the SWI/BDM vector address then an SWI in user code
could coincide with a DBG breakpoint. The CPU ensures that BDM requests have a higher priority than
SWI requests. Returning from the BDM/SWI service routine care must be taken to avoid a repeated
breakpoint at the same address.
Should a tagged or forced breakpoint coincide with a BGND in user code, then the instruction that follows
the BGND instruction is the first instruction executed when normal program execution resumes.
8.5
8.5.1
Defining the state control registers as SCR1,SCR2, SCR3 and M0,M1,M2 as matches on channels 0,1,2
respectively. SCR encoding supported by S12SDBGV1 are shown in black. SCR encoding supported only
in S12SDBGV2 are shown in red. For backwards compatibility the new scenarios use a 4th bit in each SCR
register. Thus the existing encoding for SCRx[2:0] is not changed.
8.5.2
A trigger is generated if a given sequence of 3 code events is executed.
Scenario 1 is possible with S12SDBGV1 SCR encoding
348
SCR1=0011
State1
Application Information
State Machine scenarios
Scenario 1
When program control returns from a tagged breakpoint using an RTI or
BDM GO command without program counter modification it returns to the
instruction whose tag generated the breakpoint. To avoid a repeated
breakpoint at the same location reconfigure the DBG module in the SWI
routine, if configured for an SWI breakpoint, or over the BDM interface by
executing a TRACE command before the GO to increment the program flow
past the tagged instruction.
M1
SCR2=0010
MC9S12G Family Reference Manual, Rev.1.23
State2
Figure 8-27. Scenario 1
M2
NOTE
SCR3=0111
State3
M0
Final State
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