MC9S12XDT256CAA Freescale Semiconductor, MC9S12XDT256CAA Datasheet - Page 677

• Manufacturer Part Number: MC9S12XDT256CAA
• Description: IC MCU 256K FLASH 80-QFP
• Manufacturer: Freescale Semiconductor
• Series: HCS12r

Specifications of MC9S12XDT256CAA

• Core Processor: HCS12X
• Core Size: 16-Bit
• Speed: 80MHz
• Connectivity: CAN, EBI/EMI, I²C, IrDA, LIN, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 59
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 2.35 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-QFP
• Processor Series: S12XD
• Core: HCS12
• Data Bus Width: 16 bit
• Data Ram Size: 16 KB
• Interface Type: CAN/I2C/SCI/SPI
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 59
• Number Of Timers: 12
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWHCS12
• Development Tools By Supplier: EVB9S12XDP512E
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

18.4.2.3
The global memory spaces reserved for the internal resources (RAM, EEPROM, and FLASH) are not
determined by the MMC module. Size of the individual internal resources are however fixed in the design
of the device cannot be changed by the user. Please refer to the Device User Guide for further details.
Figure 18-23
the memory spaces have fixed top addresses.
When the device is operating in expanded modes except emulation single-chip mode, accesses to global
addresses which are not occupied by the on-chip resources (unimplemented areas or external memory
space) result in accesses to the external bus (see
In emulation single-chip mode, accesses to global addresses which are not occupied by the on-chip
resources (unimplemented areas) result in accesses to the external bus. CPU accesses to global addresses
which are occupied by external memory space result in an illegal access reset (system reset). BDM
accesses to the external space are performed but the data will be undefined.
In single-chip modes accesses by the CPU (except for firmware commands) to any of the unimplemented
areas (see
unimplemented areas are allowed but the data will be undefined.
No misaligned word access from the BDM module will occur; these accesses are blocked in the BDM
module (Refer to BDM Block Guide).
Misaligned word access to the last location of RAM is performed but the data will be undefined.
Misaligned word access to the last location of any global page (64 Kbyte) by any global instruction, is
performed by accessing the last byte of the page and the first byte of the same page, considering the above
mentioned misaligned access cases.
The non-internal resources (unimplemented areas or external space) are used to generate the chip selects
(CS0,CS1,CS2 and CS3) (see
expanded and special test modes (see
Freescale Semiconductor
Figure
and
Implemented Memory Map
1
2
Table 18-20
18-23) will result in an illegal access reset (system reset). BDM accesses to the
RAMSIZE is the hexadecimal value of RAM SIZE in bytes
EEPROMSIZE is the hexadecimal value of EEPROM SIZE in bytes
Internal Resource
EEPROM
RAM
Table 18-20. Global Implemented Memory Space
show the memory spaces occupied by the on-chip resources. Please note that
Figure
MC9S12XDP512 Data Sheet, Rev. 2.21
18-23), which are only active in normal expanded, emulation
Section 18.3.2.1, “MMC Control Register
EEPROM_LOW = 0x14_0000 minus EEPROMSIZE
RAM_LOW = 0x10_0000 minus RAMSIZE
Figure
18-23).
$Address
Chapter 18 Memory Mapping Control (S12XMMCV3)
(MMCCTL0)).
1
2
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