MC9S12P32CFT Freescale Semiconductor, MC9S12P32CFT Datasheet - Page 470

• Manufacturer Part Number: MC9S12P32CFT
• Description: MCU 16BIT 32K FLASH 48-QFN
• Manufacturer: Freescale Semiconductor
• Series: HCS12r

Specifications of MC9S12P32CFT

• 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: 32KB (32K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 2K 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
• Package: 48QFN EP
• Family Name: HCS12
• Maximum Speed: 32 MHz
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 16 Bit
• Interface Type: CAN/SCI/SPI
• On-chip Adc: 10-chx12-bit
• Number Of Timers: 8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

128 KByte Flash Module (S12FTMRC128K1V1)
13.4.7
The Flash module is not affected if the MCU enters wait mode. The Flash module can recover the MCU
from wait via the CCIF interrupt (see
13.4.8
If a Flash command is active (CCIF = 0) when the MCU requests stop mode, the current Flash operation
will be completed before the CPU is allowed to enter stop mode.
13.5
The Flash module provides security information to the MCU. The Flash security state is defined by the
SEC bits of the FSEC register (see
register using data read from the security byte of the Flash configuration field at global address 0x3_FF0F.
The security state out of reset can be permanently changed by programming the security byte assuming
that the MCU is starting from a mode where the necessary P-Flash erase and program commands are
available and that the upper region of the P-Flash is unprotected. If the Flash security byte is successfully
programmed, its new value will take affect after the next MCU reset.
The following subsections describe these security-related subjects:
13.5.1
The MCU may be unsecured by using the backdoor key access feature which requires knowledge of the
contents of the backdoor keys (four 16-bit words programmed at addresses 0x3_FF00-0x3_FF07). If the
KEYEN[1:0] bits are in the enabled state (see
command (see
keys stored in the Flash memory via the Memory Controller. If the keys presented in the Verify Backdoor
Access Key command match the backdoor keys stored in the Flash memory, the SEC bits in the FSEC
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•
•
Unsecuring the MCU using Backdoor Key Access
Unsecuring the MCU in Special Single Chip Mode using BDM
Mode and Security Effects on Flash Command Availability
Security
Wait Mode
Stop Mode
Unsecuring the MCU using Backdoor Key Access
Section
DFDIE
DFDIF
SFDIE
SFDIF
CCIE
CCIF
13.4.5.11) allows the user to present four prospective keys for comparison to the
Figure 13-27. Flash Module Interrupts Implementation
S12P-Family Reference Manual, Rev. 1.13
Table
Section 13.4.6,
13-10). During reset, the Flash module initializes the FSEC
Section
“Interrupts”).
13.3.2.2), the Verify Backdoor Access Key
Flash Command Interrupt Request
Flash Error Interrupt Request
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