XC68HC12A0CPV8 Freescale Semiconductor, XC68HC12A0CPV8 Datasheet - Page 191

• Manufacturer Part Number: XC68HC12A0CPV8
• Description: IC, 16BIT MCU, 68HC12, 8MHZ, TQFP-112
• Manufacturer: Freescale Semiconductor

Specifications of XC68HC12A0CPV8

• Controller Family/series: 68HC12
• No. Of I/o's: 68
• Eeprom Memory Size: 1KB
• Ram Memory Size: 2KB
• Cpu Speed: 8MHz
• No. Of Timers: 1
• Core Size: 16 Bit
• Program Memory Size: 60KB
• Peripherals: ADC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

12.4.4 MC68HC912D60C DC Blocking Capacitor Guidelines
MC68HC912D60A — Rev. 3.1
Freescale Semiconductor
Due to the placement of the resonator from EXTAL to VSS and the
nature of the microcontroller’s inputs, there will be a DC bias voltage of
approximately (VDD–2V) across the pins of the resonator. For some
resonators, this can have long-term reliability issues. To remedy this
situation, a DC-blocking capacitor can be placed in series with the
crystal, as shown in
The value of the DC-blocking capacitor should be between 0.1 and
10nF, with a preferred value of 1nF. This capacitor must be connected
as shown in
specifications and guidelines continue to apply.
Figure
12-3. If connected thus, all other oscillator
Oscillator
Figure
12-3.
MC68HC912D60C Colpitts Oscillator Specification
Technical Data
Oscillator
191