MM912H634DM1AER2 Freescale Semiconductor, MM912H634DM1AER2 Datasheet - Page 239

• Manufacturer Part Number: MM912H634DM1AER2
• Description: 16-bit Microcontrollers - MCU 64KS12 LIN2XLS/HS ISENSE
• Manufacturer: Freescale Semiconductor

Specifications of MM912H634DM1AER2

• Rohs: yes
• Core: HCS12
• Processor Series: MM912F634
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 20 MHz
• Program Memory Size: 32 KB
• Data Ram Size: 2 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 5.5 V to 18 V
• Operating Temperature Range: - 40 C to + 105 C
• Package / Case: LQFP-48
• Mounting Style: SMD/SMT
• A/d Bit Size: 10 bit
• A/d Channels Available: 15
• Interface Type: SPI
• Maximum Operating Temperature: + 105 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 15
• Number Of Timers: 1
• Program Memory Type: Flash
• Supply Voltage - Max: 18 V
• Supply Voltage - Min: 5.5 V

Functional Description and Application Information
4.31.4.5.4
ADRH, ADRM, and ADRL denote address high, middle, and low byte respectively. CRW and CSZ indicate R/W and size access
information. The numerical suffix refers to the tracing count. The information format for Loop1, Pure PC and Normal modes is
identical. In Detail mode, the address and data for each entry are stored on consecutive lines. Thus, the maximum number of
entries is 32. In this case, DBGCNT bits are incremented twice, once for the address line and once for the data line, on each
trace buffer entry.
Single byte data accesses in Detail mode is always stored to the low byte of the trace buffer (DATAL) and the high byte is cleared.
When tracing word accesses, the byte at the lower address is always stored to trace buffer byte1, and the byte at the higher
address is stored to byte0.
4.31.4.5.4.1
The format of the bits is dependent upon the active trace mode, as described by the following.
4.31.4.5.4.2
In Detail mode, the CSZ and CRW bits indicate the type of access being made by the CPU.
Table 314. Field Descriptions
Freescale Semiconductor
ADRH17
ADRH16
Table 312. Trace Buffer Organization(20-bit wide buffer)
Field
CRW
CSZ
3
2
1
0
Other Modes
Detail Mode
Mode
Access Type Indicator— This bit indicates if the access was a byte or word size when tracing in Detail mode
0 Word Access
1 Byte Access
Read Write Indicator — This bit indicates if the corresponding stored address corresponds to a read or write access when
tracing in Detail Mode.
0 Write Access
1 Read Access
Address Bus bit 17— Corresponds to system address bus bit 17.
Address Bus bit 16— Corresponds to system address bus bit 16.
Trace Buffer Organization
Information Bit Organization
Field2 Bits in Detail Mode
Entry Number
Entry 1
Entry 2
Entry 1
Entry 2
Table 313. Field2 Information Bits in Detail Mode
Bit 3
CSZ
CSZ1,CRW1,ADRH1
CSZ2,CRW2,ADRH2
Field 2
4-bits
PCH1
PCH2
0
0
CRW
Bit 2
Description
ADRH17
Bit 1
DATAH1
DATAH2
ADRM1
ADRM2
Field 1
PCM1
PCM2
8-bits
ADRH16
Bit 0
S12S Debug (S12SDBGV1) Module
DATAL1
DATAL2
Field 0
ADRL1
ADRL2
8-bits
PCL1
PCL2
MM912F634
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