MC9S12HZ128CAL Freescale Semiconductor, MC9S12HZ128CAL Datasheet - Page 522

• Manufacturer Part Number: MC9S12HZ128CAL
• Description: IC MCU 16BIT 128K FLASH 112-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HCS12r

Specifications of MC9S12HZ128CAL

• Core Processor: HCS12
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: CAN, EBI/EMI, I²C, SCI, SPI
• Peripherals: LCD, Motor control PWM, POR, PWM, WDT
• Number Of I /o: 85
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 6K x 8
• Voltage - Supply (vcc/vdd): 2.35 V ~ 5.5 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 112-LQFP
• Processor Series: S12H
• Core: HCS12
• Data Bus Width: 16 bit
• Data Ram Size: 6 KB
• Interface Type: I2C, SCI, SPI
• Maximum Clock Frequency: 50 MHz
• Number Of Programmable I/os: 85
• Number Of Timers: 8
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWHCS12
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 16 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Chapter 18 Background Debug Module (BDMV4)
For hardware data read commands, the external host must wait 150 bus clock cycles after sending the
address before attempting to obtain the read data. This is to be certain that valid data is available in the
BDM shift register, ready to be shifted out. For hardware write commands, the external host must wait
150 bus clock cycles after sending the data to be written before attempting to send a new command. This
is to avoid disturbing the BDM shift register before the write has been completed. The 150 bus clock cycle
delay in both cases includes the maximum 128 cycle delay that can be incurred as the BDM waits for a
free cycle before stealing a cycle.
For firmware read commands, the external host should wait 44 bus clock cycles after sending the command
opcode and before attempting to obtain the read data. This includes the potential of an extra 7 cycles when
the access is external with a narrow bus access (+1 cycle) and / or a stretch (+1, 2, or 3 cycles), (7 cycles
could be needed if both occur). The 44 cycle wait allows enough time for the requested data to be made
available in the BDM shift register, ready to be shifted out.
For firmware write commands, the external host must wait 32 bus clock cycles after sending the data to be
written before attempting to send a new command. This is to avoid disturbing the BDM shift register
before the write has been completed.
The external host should wait 64 bus clock cycles after a TRACE1 or GO command before starting any
new serial command. This is to allow the CPU to exit gracefully from the standard BDM firmware lookup
table and resume execution of the user code. Disturbing the BDM shift register prematurely may adversely
affect the exit from the standard BDM firmware lookup table.
Figure 18-6
times starting with a falling edge. The bar across the top of the blocks indicates that the BKGD line idles
in the high state. The time for an 8-bit command is 8 16 target clock cycles.
1. Target clock cycles are cycles measured using the target MCU’s serial clock rate. See
and
522
Section 18.3.2.1, “BDM Status Register
represents the BDM command structure. The command blocks illustrate a series of eight bit
16-bit misaligned reads and writes are not allowed. If attempted, the BDM
will ignore the least significant bit of the address and will assume an even
address from the remaining bits.
This timing has increased from previous BDM modules due to the new
capability in which the BDM serial interface can potentially run faster than
the bus. On previous BDM modules this extra time could be hidden within
the serial time.
If the bus rate of the target processor is unknown or could be changing, it is
recommended that the ACK (acknowledge function) be used to indicate
when an operation is complete. When using ACK, the delay times are
automated.
MC9S12HZ256 Data Sheet, Rev. 2.05
(BDMSTS),” for information on how serial clock rate is selected.
NOTE
NOTE
NOTE
Section 18.4.6, “BDM Serial
1
Freescale Semiconductor
Interface,”