MC68HC705KJ1CDW Freescale Semiconductor, MC68HC705KJ1CDW Datasheet - Page 17

• Manufacturer Part Number: MC68HC705KJ1CDW
• Description: IC MCU 4MHZ 1.2K OTP 16-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HC05r

Specifications of MC68HC705KJ1CDW

• Core Processor: HC05
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: POR, WDT
• Number Of I /o: 10
• Program Memory Size: 1.2KB (1.2K x 8)
• Program Memory Type: OTP
• Ram Size: 64 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 16-SOIC (0.300", 7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -

1.4.2.2 Ceramic Resonator Oscillator
To reduce cost, use a ceramic resonator instead of the crystal. The circuits shown in
Figure 1-7
the resonator parameters determine the external component values required for maximum stability and
reliable starting. The load capacitance values used in the oscillator circuit design should include all stray
capacitances.
Mount the resonator and components as close as possible to the pins for startup stabilization and to
minimize output distortion. An internal startup resistor of approximately 2 MΩ is provided between OSC1
and OSC2 as a programmable mask option.
Freescale Semiconductor
show ceramic resonator circuits. Follow the resonator manufacturer’s recommendations, as
27 pF
27 pF
C3
C3
MC68HC705KJ1 • MC68HRC705KJ1 • MC68HLC705KJ1 Data Sheet, Rev. 4.1
10 MΩ
XTAL
MCU
MCU
XTAL
Oscillator Internal Resistor Mask Option
Oscillator Internal Resistor Mask Option
Figure 1-5. Crystal Connections without
R
Figure 1-4. Crystal Connections with
27 pF
27 pF
C4
C4
V
V
SS
SS
XTAL
XTAL
C3
C4
C3
C4
C2
C2
C1
C1
R
OSC1
OSC2
V
V
OSC1
OSC2
V
V
DD
SS
DD
SS
Figure 1-6
Pin Functions
and
17