MCL908QY2CDTE Freescale Semiconductor, MCL908QY2CDTE Datasheet - Page 92

• Manufacturer Part Number: MCL908QY2CDTE
• Description: IC MCU 8BIT 1.5K FLASH 16-TSSOP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MCL908QY2CDTE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 2MHz
• Peripherals: LVD, POR, PWM
• Number Of I /o: 13
• Program Memory Size: 1.5KB (1.5K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.4 V ~ 3.6 V
• Data Converters: A/D 4x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 16-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -

Oscillator Module (OSC)
11.3.3 XTAL Oscillator
The XTAL oscillator circuit is designed for use with an external low-frequency crystal or ceramic resonator
to provide an accurate clock source. In this configuration, the OSC2 pin is dedicated to the external crystal
circuit. The OSC2EN bit in the port A pullup enable register has no effect when this clock mode is
selected.
In its typical configuration, the XTAL oscillator is connected in a Pierce oscillator configuration, as shown
in
represent actual circuitry. The oscillator configuration uses five components:
11.3.4 RC Oscillator
The RC oscillator circuit is designed for use with an external resistor (R
a tolerance within 25% of the expected frequency. See
The capacitor (C) for the RC oscillator is internal to the MCU. The R
1%
In this configuration, the OSC2 pin can be left in the reset state as PTA4. Or, the OSC2EN bit in the port
A pullup enable register can be set to enable the OSC2 output function on the pin. Enabling the OSC2
output slightly increases the external RC oscillator frequency, f
92
Figure
•
•
•
•
•
or less to minimize its effect on the frequency.
Crystal, X
Fixed capacitor, C
Tuning capacitor, C
Feedback resistor, R
Series resistor, R
11-2. This figure shows only the logical representation of the internal components and may not
1
FROM SIM
SIMOSCEN
MCU
S
Figure 11-2. XTAL Oscillator External Connections
1
2
OSC1
B
(can also be a fixed capacitor)
MC68HLC908QY/QT Family Data Sheet, Rev. 3
C
1
R
X
B
1
XTALCLK
BUSCLKX4
OSC2
R
C
S
2
TO SIM
Figure
BUSCLKX2
÷ 2
11-3.
RCCLK
TO SIM
EXT
.
EXT
value must have a tolerance of
) to provide a clock source with
Freescale Semiconductor