mc68hc908lj24 Freescale Semiconductor, Inc, mc68hc908lj24 Datasheet - Page 45

• Manufacturer Part Number: mc68hc908lj24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

1.6.3 LCD Bias Voltage (V
1.6.4 Oscillator Pins (OSC1 and OSC2)
1.6.5 External Reset Pin (RST)
1.6.6 External Interrupt Pin (IRQ)
1.6.7 External Filter Capacitor Pin (CGMXFC)
1.6.8 ADC Voltage High Reference Pin (V
MC68HC908LJ24/LK24 — Rev. 2.1
Freescale Semiconductor
V
V
immunity, route V
as close as possible to the package. See
Display (LCD)
The OSC1 and OSC2 pins are the connections for the on-chip oscillator
circuit. The OSC1 pin contains a schmitt-trigger and a spike filter for
improved EMC performance. See
A logic 0 on the RST pin forces the MCU to a known start-up state. RST
is bidirectional, allowing a reset of the entire system. It is driven low when
any internal reset source is asserted. A Schmitt-trigger and a spike filter
is associated with this pin so that the device is more robust to EMC
noise. This pin also contains an internal pullup resistor. See
and System
IRQ is an asynchronous external interrupt pin. This pin contains an
internal pullup resistor. See
CGMXFC is an external filter capacitor connection for the CGM.
See
V
See
LCD
LCD
REFH
LCD
8.4.9 CGM External
16.7.4 ADC Voltage Reference High Pin (V
is the bias voltage supply for the LCD driver module. Connect the
pin to the same voltage potential as V
is the voltage input pin for the ADC voltage high reference.
)
Initialization.
General Description
Driver.
LCD
REFH
via a separate trace and place bypass capacitors
)
Connections.
Section 19. External Interrupt
Section 7. Oscillator
Section 17. Liquid Crystal
DD
. For maximum noise
REFH
).
General Description
(OSC).
Pin Functions
(IRQ).
9.4 Reset
Data Sheet
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