TWR-K60N512-KEIL Freescale Semiconductor, TWR-K60N512-KEIL Datasheet - Page 150

• Manufacturer Part Number: TWR-K60N512-KEIL
• Description: K60N512 Keil Tower Kit
• Manufacturer: Freescale Semiconductor
• Series: Kinetisr
• Type: MCUr

Specifications of TWR-K60N512-KEIL

• Rohs Compliant: YES
• Contents: 4 Boards, Documentation, DVD
• Peak Reflow Compatible (260 C): Yes
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: Freescale Tower System, K60N512

Power supply
16.2 Power supply
Table 16-1
environment and contrast control required.
150
0
1
2
3
4
5
6
Configu‐
ration
VLL1 to VIREG Volt‐
age internal regulator
(VIREG = 1.0 V )
HREFSEL=0. Charge
pump generates VLL2
and VLL3
VLL1 to VIREG HREF‐
SEL=1 VIREG = 1.67V.
Charge pump gener‐
ates VLL2 and VLL3
VLL3 to VDD (internal
connection). Charge
pump generates VLL2
and VLL1
VLL3 driven externally
(charge pump ena‐
bled). Charge pump
generates VLL2 and
VLL1, VDD must be 3V
VLL3 driven externally
(voltage divider ena‐
bled). Resistor bias
network generates
VLL2 and VLL1. VLL3
connected to external
voltage=3 V. Charge
pump is disabled.
VLL2 to VDD (internal
connection) VDD=2.0
V. Charge pump gener‐
ates VLL3 and VLL1
VLL2 to VDD (internal
connection) VDD= 3.33
V. Charge pump gener‐
ates VLL3 and VLL1
LCD Power Supply
shows power supply modes and suggests the use according to the
mode
Kinetis Quick Reference User Guide, Rev. 0, 11/2010
Table 16-1. SLCD power supply options
3 V
5 V
3 V
3 V
3 V
3 V
5 V
Nominal
Voltage
LCD
Not rec‐
ommen‐
ded
Not rec‐
ommen‐
ded
Most rec‐
ommen‐
ded
Most rec‐
ommen‐
ded
Most rec‐
ommen‐
ded
Noisy En‐
viron‐
ment
Most rec‐
ommen‐
ded
Most rec‐
ommen‐
ded
Not rec‐
ommen‐
ded
Recom‐
mended
Recom‐
mended
Not rec‐
ommen‐
ded
Not rec‐
ommen‐
ded
Contrast
Control
VLLx voltages are fixed
over a width range of
VDD input voltage. The
regulator voltage can
be trimmed [RVTRIM]
for software contrast
control
VLLx voltages are fixed
over a width range of
VDD input voltage. The
regulator voltage can
be trimmed [RVTRIM]
for software contrast
control
This configuration can
be suitable for noisy
application
Allows external con‐
trast control
Allows external con‐
trast control. Because
the Charge Pump is
disabled, power con‐
sumption is reduced
Advantages
Freescale Semiconductor
Not recommend for
noisy applications
Not recommend for
noisy applications
Contrast Control is not
possible
This configuration is
not suitable for 5 V
LCD
Requires an external
power supply, and it
must be a variable.
Contrast control is re‐
quired. Not suitable for
5 V LCD
VDD voltage must be
in an appropriate range
for a 3 V LCD
VDD voltage must be
in an appropriate range
for a 5 V LCD
Disadvantages