MC9S12P96CFT Freescale Semiconductor, MC9S12P96CFT Datasheet - Page 138
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MC9S12P96CFT
Manufacturer Part Number
MC9S12P96CFT
Description
MCU 16BIT 96K FLASH 48-QFN
Manufacturer
Freescale Semiconductor
Series
HCS12r
Datasheet
1.S9S12P32J0MFT.pdf
(566 pages)
Specifications of MC9S12P96CFT
Core Processor
HCS12
Core Size
16-Bit
Speed
32MHz
Connectivity
CAN, SCI, SPI
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
34
Program Memory Size
96KB (96K x 8)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
6K x 8
Voltage - Supply (vcc/vdd)
1.72 V ~ 5.5 V
Data Converters
A/D 10x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
48-QFN Exposed Pad
Processor Series
S12P
Core
HCS12
3rd Party Development Tools
EWHCS12
Development Tools By Supplier
KIT33812ECUEVME, DEMO9S12PFAME
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Background Debug Module (S12SBDMV1)
5.3.3
The family ID is an 8-bit value located in the BDM ROM in active BDM (at global address: 0x3_FF0F).
The read-only value is a unique family ID which is 0xC2 for devices with an HCS12S core.
5.4
The BDM receives and executes commands from a host via a single wire serial interface. There are two
types of BDM commands: hardware and firmware commands.
Hardware commands are used to read and write target system memory locations and to enter active
background debug mode, see
includes all memory that is accessible by the CPU.
Firmware commands are used to read and write CPU resources and to exit from active background debug
mode, see
accumulator (D), X index register (X), Y index register (Y), stack pointer (SP), and program counter (PC).
Hardware commands can be executed at any time and in any mode excluding a few exceptions as
highlighted (see
“Security”). BDM firmware commands can only be executed when the system is not secure and is in active
background debug mode (BDM).
5.4.1
If the user resets into special single chip mode with the system secured, a secured mode BDM firmware
lookup table is brought into the map overlapping a portion of the standard BDM firmware lookup table.
The secure BDM firmware verifies that the on-chip Flash EEPROM are erased. This being the case, the
UNSEC and ENBDM bit will get set. The BDM program jumps to the start of the standard BDM firmware
and the secured mode BDM firmware is turned off and all BDM commands are allowed. If the Flash
not verify as erased, the BDM firmware sets the ENBDM bit, without asserting UNSEC, and the firmware
enters a loop. This causes the BDM hardware commands to become enabled, but does not enable the
firmware commands. This allows the BDM hardware to be used to erase the Flash.
BDM operation is not possible in any other mode than special single chip mode when the device is secured.
The device can only be unsecured via BDM serial interface in special single chip mode. For more
information regarding security, please see the S12S_9SEC Block Guide.
5.4.2
The system must be in active BDM to execute standard BDM firmware commands. BDM can be activated
only after being enabled. BDM is enabled by setting the ENBDM bit in the BDM status (BDMSTS)
register. The ENBDM bit is set by writing to the BDM status (BDMSTS) register, via the single-wire
interface, using a hardware command such as WRITE_BD_BYTE.
After being enabled, BDM is activated by one of the following
1. BDM is enabled and active immediately out of special single-chip reset.
138
•
Hardware BACKGROUND command
Functional Description
Section 5.4.4, “Standard BDM Firmware
Family ID Assignment
Security
Enabling and Activating BDM
Section 5.4.3, “BDM Hardware
Section 5.4.3, “BDM Hardware
S12P-Family Reference Manual, Rev. 1.13
Commands”) and in secure mode (see
Commands”. The CPU resources referred to are the
Commands”. Target system memory
1
:
Freescale Semiconductor
Section 5.4.1,
does
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