MC9S12XDT256CAA Freescale Semiconductor, MC9S12XDT256CAA Datasheet - Page 625

• 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

The reset value of $FD ensures that there is a linear RAM space available between addresses $1000 and
$3FFF out of reset.
The fixed 4K page from $2000–$2FFF of RAM is equivalent to page 254 (page number $FE).
The fixed 4K page from $3000–$3FFF of RAM is equivalent to page 255 (page number $FF).
Freescale Semiconductor
RP[7:0]
Field
7–0
RAM Page Index Bits 7–0 — These page index bits are used to select which of the 256 RAM array pages is to
be accessed in the RAM Page Window.
Because RAM page 0 has the same global address as the register space, it is
possible to write to registers through the RAM space when RPAGE = $00.
0
0
0
Figure 17-12. RPAGE Address Mapping
Table 17-11. RPAGE Field Descriptions
Bit19
MC9S12XDP512 Data Sheet, Rev. 2.21
Global Address [22:0]
Bit18
RPAGE Register [7:0]
NOTE
Description
Bit12
Address: CPU Local Address
Chapter 17 Memory Mapping Control (S12XMMCV2)
Bit11
or BDM Local Address
Address [11:0]
Bit0
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