DEMO9S08LIN Freescale, DEMO9S08LIN Datasheet - Page 162

• Manufacturer Part Number: DEMO9S08LIN
• Manufacturer: Freescale

Specifications of DEMO9S08LIN

• Lead Free Status / RoHS Status: Compliant

Chapter 9 Liquid Crystal Display Driver (S08LCDV1)
9.5.2.4
Example 3 LCD setup requirements are reiterated in the table below:
Table 9-25
162
LCDSUPPLY
FPENR[5:0]
XXXXXX00
0XXX1001
LCDCLKS
1100XX10
0X010X11
00000000
LCDBCTL
Register
LCDCR1
LCDCR0
Example
4
lists the required setup values required to initialize the LCD as specified by Example 4:
Initialization
VSUPPLY[1:0]
CPCADJ[1:0]
CLKADJ[5:0]
Operating
Bit/bit field
BRATE[2:0]
LCDCPMS
BLKMODE
LCDCPEN
HDRVBUF
DUTY[1:0]
Voltage,
BBYPASS
LCDSTP3
LCLK[2:0]
SOURCE
LPWAVE
FPENR0
FPENR1
FPENR2
FPENR3
FPENR4
FPENR5
LCDWAI
1.8-V
DIV16
V
DD
LCD Clock
32.768 kHz
Table 9-25. Initialization Register Values for Example 4
External
Source
XXXXXXX1
MC9S08LC60 Series Data Sheet: Technical Data, Rev. 4
11111111
11111111
11111111
11111111
11111111
000000
Binary
Value
010
001
Example 4
00
10
10
X
X
X
0
0
1
1
0
0
1
LCD Glass
Operating
Voltage
Selects the external clock reference as the LCD clock input
External clock reference = 0; Bus clock = 1
Adjusts the LCD clock input (see table 9-12)
Adjusts the LCD clock input (see table 9-12)
Enable the charge pump
For 3-V LCD glass, select tripler mode
Doubler mode = 0; Tripler mode = 1
High drive buffer
Configure LCD charge pump clock source
Buffer Bypass; Buffer mode = 0; Unbuffered mode = 1
When VSUPPLY[1:0] = 10, the LCD must be externally powered via V
table 9-16). For 5-V glass, the nominal value of V
LCD is “off” in WAIT mode
LCD is “off” in STOP3 mode
For 1/3 duty cycle, select the closest value to the desired 30 Hz LCD frame
frequency (see table 9-13). Note the LCD base frequency - 128.1 Hz
Low power waveform
For 123 segments (3x41), select 1/3 duty cycle (see table 9-11)
Blink all segments; Blink Segments = 0; Blink All = 1
Using the LCD base frequency for the selected LCD frame frequency, select 2.0
Hz blink frequency (see table 9-15).
All 41 LCD frontplanes need to be enabled.
5-V
segments
Required
LCD
123
Frame
30 Hz
Rate
LCD
Comment
all segment
Mode/Rate
Blinking
2.0 Hz
LCD
should be 1.67-V.
WAIT modes
Behavior in
STOP3 and
Freescale Semiconductor
STOP3: off
WAIT: off
LCD
Power
Power
Input
V
LCD
via
LCD
(see