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6.9.2 LCD electrical characteristics
Table 49. LCD electricals
Symbol
Description
Min.
Typ.
Max.
Unit
Notes
fFrame
LCD frame frequency
28
30
58
Hz
CLCD
LCD charge pump capacitance — nominal value
—
100
—
nF
CBYLCD
LCD bypass capacitance — nominal value
—
100
—
nF
CGlass
LCD glass capacitance
—
2000
8000
pF
VIREG
HREFSEL=0, RVTRIM=1111
HREFSEL=0, RVTRIM=1000
HREFSEL=0, RVTRIM=0000
HREFSEL=1, RVTRIM=1111
HREFSEL=1, RVTRIM=1000
HREFSEL=1, RVTRIM=0000
—
1.11
1.01
0.91
1.84
1.69
1.54
—
V
ΔRTRIM
VIREG TRIM resolution
—
3.0
% VIREG
—
VIREG ripple
HREFSEL = 0
HREFSEL = 1
—
30
50
mV
IVIREG
VIREG current adder — RVEN = 1
—
1
—
A
IRBIAS
RBIAS current adder
LADJ = 10 or 11 — High load (LCD glass
capacitance ≤ 8000 pF)
LADJ = 00 or 01 — Low load (LCD glass
capacitance ≤ 2000 pF)
—
10
1
—
A
RRBIAS
RBIAS resistor values
LADJ = 10 or 11 — High load (LCD glass
capacitance ≤ 8000 pF)
LADJ = 00 or 01 — Low load (LCD glass
capacitance ≤ 2000 pF)
—
0.28
2.98
—
MΩ
VLL2
VLL2 voltage
HREFSEL = 0
HREFSEL = 1
2.0 5%
3.3 5%
2.0
3.3
—
V
VLL3
VLL3 voltage
HREFSEL = 0
HREFSEL = 1
3.0 5%
5 5%
3.0
5
—
V
1. The actual value used could vary with tolerance.
Peripheral operating requirements and behaviors
K30 Sub-Family Data Sheet Data Sheet, Rev. 7, 02/2013.
62
Freescale Semiconductor, Inc.