MC9S12XDT256CAA Freescale Semiconductor, MC9S12XDT256CAA Datasheet - Page 835

• 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

22.3.2.14 IRQ Control Register (IRQCR)
Read: See individual bit descriptions below.
Write: See individual bit descriptions below.
Freescale Semiconductor
EDIV[1:0]
NCLKX2
IRQEN
Reset
Field
Field
IRQE
1–0
6
7
6
W
R
IRQE
No ECLKX2 — This bit controls the availability of a free-running clock on the ECLKX2 pin. This clock has a fixed
rate of twice the internal bus clock. Clock output is always active in emulation modes and if enabled in all other
operating modes.
0 ECLKX2 is enabled
1 ECLKX2 is disabled
Free-Running ECLK Divider — These bits determine the rate of the free-running clock on the ECLK pin. The
usage of the bits is shown in
programmed in all other operating modes.
IRQ Select Edge Sensitive Only
Special modes: Read or write anytime.
Normal and emulation modes: Read anytime, write once.
0 IRQ configured for low level recognition.
1 IRQ configured to respond only to falling edges. Falling edges on the IRQ pin will be detected anytime
External IRQ Enable
Read or write anytime.
0 External IRQ pin is disconnected from interrupt logic.
1 External IRQ pin is connected to interrupt logic.
0
7
IRQE = 1 and will be cleared only upon a reset or the servicing of the IRQ interrupt.
= Unimplemented or Reserved
IRQEN
1
6
Table 22-16. ECLKCTL Field Descriptions (continued)
EDIV[1:0]
Table 22-17. Free-Running ECLK Clock Rate
Figure 22-16. IRQ Control Register (IRQCR)
00
01
10
11
Table 22-18. IRQCR Field Descriptions
MC9S12XDP512 Data Sheet, Rev. 2.21
Table
0
0
5
ECLK = Bus clock rate
ECLK = Bus clock rate divided by 2
ECLK = Bus clock rate divided by 3
ECLK = Bus clock rate divided by 4
22-17. Divider is always disabled in emulation modes and active as
Rate of Free-Running ECLK
0
0
4
Description
Description
Chapter 22 DP512 Port Integration Module (S12XDP512PIMV2)
0
0
3
0
0
2
0
0
1
0
0
0
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