S9S12G240F0CLFR Freescale Semiconductor, S9S12G240F0CLFR Datasheet - Page 297
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S9S12G240F0CLFR
Manufacturer Part Number
S9S12G240F0CLFR
Description
16-bit Microcontrollers - MCU 16BIT 240KB FLASH
Manufacturer
Freescale Semiconductor
Datasheet
1.S9S12G96F0CLL.pdf
(1292 pages)
Specifications of S9S12G240F0CLFR
Rohs
yes
Core
S12
Processor Series
MC9S12G
Data Bus Width
16 bit
Maximum Clock Frequency
25 MHz
Program Memory Size
240 KB
Data Ram Size
4 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-48
Mounting Style
SMD/SMT
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
S9S12G240F0CLFR
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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1
2
3
7.4.5
Hardware and firmware BDM commands start with an 8-bit opcode followed by a 16-bit address and/or a
16-bit data word, depending on the command. All the read commands return 16 bits of data despite the
byte or word implication in the command name.
Freescale Semiconductor
READ_NEXT
READ_PC
READ_D
READ_X
READ_Y
READ_SP
WRITE_NEXT
WRITE_PC
WRITE_D
WRITE_X
WRITE_Y
WRITE_SP
GO
GO_UNTIL
TRACE1
TAGGO -> GO
If enabled, ACK will occur when data is ready for transmission for all BDM READ commands and will occur after the write is
complete for all BDM WRITE commands.
are accessed rather than user code. Writing BDM firmware is not possible.
System stop disables the ACK function and ignored commands will not have an ACK-pulse (e.g., CPU in stop or wait mode).
The GO_UNTIL command will not get an Acknowledge if CPU executes the wait or stop instruction before the “UNTIL”
condition (BDM active again) is reached (see
When the firmware command READ_NEXT or WRITE_NEXT is used to access the BDM address space the BDM resources
Command
3
2
BDM Command Structure
2
1
8-bit reads return 16-bits of data, only one byte of which contains valid data.
If reading an even address, the valid data will appear in the MSB. If reading
an odd address, the valid data will appear in the LSB.
Opcode
(hex)
0C
62
63
64
65
66
67
42
43
44
45
46
47
08
10
18
16-bit data out Increment X index register by 2 (X = X + 2), then read word X points to.
16-bit data out Read program counter.
16-bit data out Read D accumulator.
16-bit data out Read X index register.
16-bit data out Read Y index register.
16-bit data out Read stack pointer.
16-bit data in
16-bit data in
16-bit data in
16-bit data in
16-bit data in
16-bit data in
Data
none
none
none
none
MC9S12G Family Reference Manual, Rev.1.23
Table 7-6. Firmware Commands
Section 7.4.7, “Serial Interface Hardware Handshake Protocol”
Increment X index register by 2 (X = X + 2), then write word to location
pointed to by X.
Write program counter.
Write D accumulator.
Write X index register.
Write Y index register.
Write stack pointer.
Go to user program. If enabled, ACK will occur when leaving active
background mode.
Go to user program. If enabled, ACK will occur upon returning to active
background mode.
Execute one user instruction then return to active BDM. If enabled,
ACK will occur upon returning to active background mode.
(Previous enable tagging and go to user program.)
This command will be deprecated and should not be used anymore.
Opcode will be executed as a GO command.
Description
Background Debug Module (S12SBDMV1)
last note).
299
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