K40P144M100SF2_1109 Datasheet, PDF (66/78 Pages) Freescale Semiconductor, Inc – K40 Sub-Family Data Sheet

Peripheral operating requirements and behaviors
6.9.2 LCD electrical characteristics
Table 48. LCD electricals
Symbol
f_Frame
C_LCD
C_BYLCD
C_Glass
V_IREG
Description
LCD frame frequency
LCD charge pump capacitance — nominal value
LCD bypass capacitance — nominal value
LCD glass capacitance
V_IREG
• HREFSEL=0, RVTRIM=1111
• HREFSEL=0, RVTRIM=1000
• HREFSEL=0, RVTRIM=0000
Min.
28
—
—
—
—
—
—
Typ.
30
100
100
2000
1.11
1.01
0.91
• HREFSEL=1, RVTRIM=1111
• HREFSEL=1, RVTRIM=1000
• HREFSEL=1, RVTRIM=0000
—
1.84
—
1.69
—
1.54
Δ_RTRIM
—
V_IREG TRIM resolution
V_IREG ripple
• HREFSEL = 0
• HREFSEL = 1
—
—
—
—
—
—
I_VIREG V_IREG current adder — RVEN = 1
—
1
I_RBIAS RBIAS current adder
—
10
• LADJ = 10 or 11 — High load (LCD glass
capacitance ≤ 8000 pF)
—
1
• LADJ = 00 or 01 — Low load (LCD glass
capacitance ≤ 2000 pF)
R_RBIAS RBIAS resistor values
• LADJ = 10 or 11 — High load (LCD glass
—
capacitance ≤ 8000 pF)
0.28
• LADJ = 00 or 01 — Low load (LCD glass
capacitance ≤ 2000 pF)
—
2.98
VLL2
VLL2 voltage
• HREFSEL = 0
• HREFSEL = 1
2.0 − 5%
2.0
3.3 − 5%
3.3
VLL3
VLL3 voltage
• HREFSEL = 0
• HREFSEL = 1
3.0 − 5%
3.0
5 − 5%
5
Max.
58
—
—
8000
—
—
—
—
—
—
Unit
Notes
Hz
nF
1
nF
1
pF
2
3
V
V
V
V
V
V
3.0
% V_IREG
30
mV
50
mV
—
µA
4
—
µA
—
µA
—
MΩ
—
MΩ
—
V
—
V
—
V
—
V
1. The actual value used could vary with tolerance.
2. For highest glass capacitance values, LCD_GCR[LADJ] should be configured as specified in the LCD Controller chapter
within the device's reference manual.
K40 Sub-Family Data Sheet Data Sheet, Rev. 6, 9/2011.
66
Freescale Semiconductor, Inc.