DEMO9S08LIN Freescale, DEMO9S08LIN Datasheet - Page 155

• Manufacturer Part Number: DEMO9S08LIN
• Manufacturer: Freescale

Specifications of DEMO9S08LIN

• Lead Free Status / RoHS Status: Compliant

9.4.5
During a reset, the LCD module system is configured in the default mode. The default mode includes the
following settings:
9.4.6
When an LCD module frame (LPWAVE = 0) or sub-frame (LPWAVE = 1) frequency interrupt event
occurs, the LCDIF bit in the LCDCMD register is asserted. The LCDIF bit remains asserted until the LCD
module frame frequency interrupt is cleared by software. The interrupt can be cleared by software by
writing a 1 to the LCDIF bit.
If a both the LCDIF bit in the LCDCMD register and the LCDIEN bit in the LCDCR1 register are set, an
LCD interrupt signal asserts.
For both normal waveform and low-power waveform, configured for the same frequency with the same
clock configuration. The low-power waveform splits a frame into two subframes with equal duration. See
Figure 9-11
When an LCD module frame(LPWAVE=0) or sub-frame(LPWAVE=1) frequency interrupt event occurs,
the LCDIF bit in the LCDCMD register is asserted. The LCDIF bit remains asserted until the LCD module
frame frequency interrupt is cleared by software. The interrupt can be cleared by software by writing a 1
to the LCDIF bit.
9.5
This section provides a recommended initialization sequence for the LCD module and also includes
initialization examples for several possible LCD application scenarios.
Freescale Semiconductor
•
•
•
•
•
VSUPPLY[1:0]
LCDEN is cleared, thereby forcing all frontplane and backplane driver outputs to the high
impedance state.
1/4 duty
1/3 bias
All frontplane enable bits, FP[n]EN, are cleared
LCLK[2:0], VSUPPLY[2:0], BBYPASS, and BRATE[2:0] revert to their reset values
Initialization Section
00
01
Resets
Interrupts
through
V
V
Figure
LL2
LL3
is generated from V
is generated from V
9-16.
MC9S08LC60 Series Data Sheet: Technical Data, Rev. 4
V
DD
Switch Option
Table 9-20. V
DD
DD
DD
Switch Option
Recommend Use for 3-V
• V
• V
• V
• V
• V
• V
LL1
DD
LL3
LL1
LL2
DD
LCD Panels
= V
= V
= 1v
= 1v
= 2v
= 3v
Chapter 9 Liquid Crystal Display Driver (S08LCDV1)
LL2
LL3
= 2v
= 3v
Recommend Use for 5-V
Invalid LCD power
configuration
• V
• V
• V
LL1
DD
LL3
LCD Panels
= V
= 1.67v
= 5v
LL2
= 3.3v
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