MC68HRC908JK3CP Freescale Semiconductor, MC68HRC908JK3CP Datasheet - Page 98

• Manufacturer Part Number: MC68HRC908JK3CP
• Description: IC MCU FLASH 8B 8MHZ RC 4K 20DIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HRC908JK3CP

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Peripherals: LED, LVD, POR, PWM
• Number Of I /o: 15
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.3 V
• Data Converters: A/D 12x8b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Connectivity: -

Oscillator (OSC)
8.3 X-tal Oscillator (MC68HC908xxx)
Technical Data
96
The X-tal oscillator circuit is designed for use with an external crystal or
ceramic resonator to provide accurate clock source.
In its typical configuration, the X-tal oscillator is connected in a Pierce
oscillator configuration, as shown in
the logical representation of the internal components and may not
represent actual circuitry. The oscillator configuration uses five
components:
From SIM
•
•
•
•
•
MCU
SIMOSCEN
Crystal, X
Fixed capacitor, C
Tuning capacitor, C
Feedback resistor, R
Series resistor, R
Figure 8-1. X-tal Oscillator External Connections
OSC1
1
C
Oscillator (OSC)
1
R
X
B
1
S
1
(optional)
2
XTALCLK
B
(can also be a fixed capacitor)
2OSCOUT
OSC2
R
C
S
*
2
*R
See
Refer to manufacturer’s data.
S
To SIM
can be zero (shorted) when used with higher-frequency crystals.
Section 18.
Figure
÷ 2
OSCOUT
for component value requirements.
8-1. This figure shows only
MC68H(R)C908JL3
To SIM
Freescale Semiconductor
—
Rev. 1.1