MC68340AG16E Freescale Semiconductor, MC68340AG16E Datasheet - Page 389

• Manufacturer Part Number: MC68340AG16E
• Description: IC MPU 32BIT 16MHZ 144-LQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC68340AG16E

• Processor Type: M683xx 32-Bit
• Speed: 16MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 144-LQFP
• Controller Family/series: 68K
• Core Size: 32 Bit
• No. Of I/o's: 16
• Cpu Speed: 16MHz
• No. Of Timers: 2
• Embedded Interface Type: UART
• Digital Ic Case Style: LQFP
• Rohs Compliant: Yes
• Processor Series: M683xx
• Core: CPU32
• Maximum Clock Frequency: 16 MHz
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Lead Free Status / Rohs Status: Details

The circuit shown in Figure 10-3 is the typical circuit recommended by Statek Corporation,
for 32768 kHz crystal, part number CX-IV. It is recommended to start with these values,
but parameter values may need to be adjusted to compensate for variables in layout.
A separate power pin (V
of the device powered down and to provide increased noise immunity for the clock circuits.
The source for V
(see Figure 10-4) should be placed as close as possible to the V
stable operating frequency.
Additionally, the PLL requires that an external low-leakage filter capacitor, typically in the
range of 0.01 to 0.1 F, be connected between the XFC and V
capacitor should provide 50-M
clock mode without PLL, the XFC pin can be left open. Smaller values of the external filter
capacitor provide a faster response time for the PLL, and larger values provide greater
frequency stability. Figure 10-4 depicts examples of both an external filter capacitor and
bypass capacitors for V
10-2
CCSYN
Figure 10-3. Statek Corporation Crystal Circuit
CCSYN
CCSYN
should be a quiet power supply, and external bypass capacitors
Freescale Semiconductor, Inc.
MC68340
MC68340
Figure 10-2. Sample Crystal Circuit
For More Information On This Product,
.
EXTAL
EXTAL
) is used to allow the clock circuits to operate with the rest
XTAL
XTAL
MC68340 USER’S MANUAL
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insulation but should not be electrolytic. For external
20 M
22 M
330 k
470 k
32.768 kHz
32.768 kHz
20 pF
4.7 pF
10 pF
10 pF
CCSYN
CCSYN
pin to ensure a
pins. The XFC
MOTOROLA