K40P104M100SF2 Datasheet, PDF (53/60 Pages) Freescale Semiconductor, Inc – K40 Sub-Family Data Sheet

6.9.3 LCD electrical characteristics
Dimensions
Table 44. LCD electricals
Symbol
f_Frame
C_LCD
C_BYLCD
C_Glass
V_IREG
Δ_RTRIM
—
I_VIREG
I_RBIAS
R_RBIAS
VLL2
Description
Min.
Typ.
Max.
Unit
LCD frame frequency
28
30
58
Hz
LCD charge pump capacitance — nominal value
—
100
—
nF
LCD bypass capacitance — nominal value
—
100
—
nF
LCD glass capacitance
—
2000
8000
pF
V_IREG — HREFSEL = 0
• HREFSEL = 0
• HREFSEL = 1
V_IREG TRIM resolution
V_IREG ripple
• HREFSEL = 0
• HREFSEL = 1
V_IREG current adder — RVEN = 1
0.89
1.49
3.0
—
—
—
1.00
1.67
y _—
r _—
a_—
in¹
1.15
1.85
—
V
V
% V_IREG
30
mV
50
mV
—
µA
RBIAS current adder
• HREFSEL = 0
• HREFSEL = 1
—
10
—
1
lim ^{RBIAS resistor values}
• LADJ = 00 or 01 — Low load (LCD glass
—
0.28
capacitance ≤ 2000 pF)
• LADJ = 10 or 11 — High load (LCD glass
e _{capacitance ≤ 8000 pF)}
—
2.98
r VLL2 voltage
• HREFSEL = 0
P ^{• HREFSEL = 1}
2.0 − 5%
2.0
3.3 − 5%
3.3
—
—
—
—
—
—
µA
µA
MΩ
MΩ
V
V
VLL3
VLL3 voltage
• HREFSEL = 0
• HREFSEL = 1
3.0 − 5%
3.0
—
V
5 − 5%
5
—
V
Notes
1
1
2
3
3
1. The actual value used could vary with tolerance.
2. V_IREG maximum should never be externally driven to any level other than V_DD - 0.15 V
3. 2000 pF load LCD, 32 Hz frame frequency
7 Dimensions
K40 Sub-Family Data Sheet Data Sheet, Rev. 1, 11/2010.
Freescale Semiconductor, Inc.
Preliminary
53