MC9S12XD256VAG Freescale Semiconductor, MC9S12XD256VAG Datasheet - Page 802

• Manufacturer Part Number: MC9S12XD256VAG
• Description: IC MCU 256K FLASH 144-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HCS12r

Specifications of MC9S12XD256VAG

• 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: 119
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 14K x 8
• Voltage - Supply (vcc/vdd): 2.35 V ~ 5.5 V
• Data Converters: A/D 24x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Chapter 21 External Bus Interface (S12XEBIV2)
21.5.2.1
This mode is used for emulation systems in which the target application is operating in normal single-chip
mode.
Figure 21-5
The timing diagram for this operation is shown in:
The associated timing numbers are given in:
Timing considerations:
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Figure ‘Example 2a: Emulation Single-Chip Mode — Read Followed by Write’
Table ‘Example 2a: Emulation Single-Chip Mode Timing (EWAITE = 0)’
Signals muxed with address lines ADDRx, i.e., IVDx, IQSTATx and ACCx, have the same timing.
LSTRB has the same timing as R/W.
ECLKX2 rising edges have the same timing as ECLK edges.
The timing for accesses to PRU registers, which take 2 cycles to complete, is the same as the timing
for an external non-PRR access with 1 cycle of stretch as shown in example 2b.
shows the PRU connection with the available external bus signals in an emulator application.
Example 2a: Emulation Single-Chip Mode
Figure 21-5. Application in Emulation Single-Chip Mode
ADDR[22:20]/ACC[2:0]
ADDR[22:0]/IVD[15:0]
S12X_EBI
ADDR[19:16]/
IQSTAT[3:0]
DATA[15:0]
MC9S12XDP512 Data Sheet, Rev. 2.21
ECLKX2
LSTRB
ECLK
R/W
EMULMEM
PRU
Emulator
PRR
Ports
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