MC9S12D64MFU Freescale Semiconductor, MC9S12D64MFU Datasheet - Page 56

• Manufacturer Part Number: MC9S12D64MFU
• Description: IC MCU 64K FLASH 25MHZ 80-QFP
• Manufacturer: Freescale Semiconductor
• Series: HCS12r

Specifications of MC9S12D64MFU

• Core Processor: HCS12
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: CAN, I²C, SCI, SPI
• Peripherals: PWM, WDT
• Number Of I /o: 59
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 2.35 V ~ 5.25 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 80-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

MC9S12DJ64 Device User Guide — V01.20
2.3 Detailed Signal Descriptions
2.3.1 EXTAL, XTAL — Oscillator Pins
EXTAL and XTAL are the crystal driver and external clock pins. On reset all the device clocks are derived
from the EXTAL input frequency. XTAL is the crystal output.
2.3.2 RESET — External Reset Pin
An active low bidirectional control signal, it acts as an input to initialize the MCU to a known start-up
state, and an output when an internal MCU function causes a reset.
2.3.3 TEST — Test Pin
This input only pin is reserved for test.
NOTE:
The TEST pin must be tied to VSS in all applications.
2.3.4 VREGEN — Voltage Regulator Enable Pin
This input only pin enables or disables the on-chip voltage regulator.
2.3.5 XFC — PLL Loop Filter Pin
PLL loop filter. Please ask your Freescale representative for the interactive application note to compute
PLL loop filter elements. Any current leakage on this pin must be avoided.
XFC
R
0
C
P
MCU
C
S
VDDPLL
VDDPLL
Figure 2-3 PLL Loop Filter Connections
2.3.6 BKGD / TAGHI / MODC — Background Debug, Tag High, and Mode Pin
The BKGD/TAGHI/MODC pin is used as a pseudo-open-drain pin for the background debug
communication. In MCU expanded modes of operation when instruction tagging is on, an input low on
this pin during the falling edge of E-clock tags the high half of the instruction word being read into the
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