MC9S12P32CFT Freescale Semiconductor, MC9S12P32CFT Datasheet - Page 153

• 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

Background Debug Module (S12SBDMV1)
handshake protocol is enabled, the time out between a read command and the data retrieval is disabled.
Therefore, the host could wait for more then 512 serial clock cycles and still be able to retrieve the data
from an issued read command. However, once the handshake pulse (ACK pulse) is issued, the time-out
feature is re-activated, meaning that the target will time out after 512 clock cycles. Therefore, the host
needs to retrieve the data within a 512 serial clock cycles time frame after the ACK pulse had been issued.
After that period, the read command is discarded and the data is no longer available for retrieval. Any
negative edge in the BKGD pin after the time-out period is considered to be a new command or a SYNC
request.
Note that whenever a partially issued command, or partially retrieved data, has occurred the time out in the
serial communication is active. This means that if a time frame higher than 512 serial clock cycles is
observed between two consecutive negative edges and the command being issued or data being retrieved
is not complete, a soft-reset will occur causing the partially received command or data retrieved to be
disregarded. The next negative edge in the BKGD pin, after a soft-reset has occurred, is considered by the
target as the start of a new BDM command, or the start of a SYNC request pulse.
S12P-Family Reference Manual, Rev. 1.13
Freescale Semiconductor
153