EFM32GG995 Datasheet, PDF (48/81 Pages) List of Unclassifed Manufacturers – EFM32GG995 DATASHEET

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Symbol
Parameter
t_{H_ARDY} ^{1 2 3 4}
Hold time, from trailing EBI_REn, EBI_WEn edge
to EBI_ARDY invalid
1_{Applies for all addressing modes (figure only shows D16A8.)}
2_{Applies for EBI_REn, EBI_WEn (figure only shows EBI_REn)}
3_{Applies for all polarities (figure only shows active low signals)}
4_{Measurement done at 10% and 90% of VDD (figure shows 50% of VDD)}
Min
Typ
-1 + (3 * t_HFCORECLK)
Max
3.16 LCD
Unit
ns
Table 3.25. LCD
Symbol
f_LCDFR
NUM_SEG
V_LCD
I_LCD
I_LCDBOOST
V_BOOST
Parameter
Condition
Min
Frame rate
Number of seg-
ments supported
LCD supply voltage Internal boost circuit enabled
range
Display disconnected, stat-
ic mode, framerate 32 Hz, all
segments on.
Steady state current
consumption.
Display disconnected, quadru-
plex mode, framerate 32
Hz, all segments on, bias
mode to ONETHIRD in
LCD_DISPCTRL register.
Steady state Cur-
rent contribution of
internal boost.
Internal voltage boost off
Internal voltage boost on,
boosting from 2.2 V to 3.0 V.
VBLEV of LCD_DISPCTRL
register to LEVEL0
VBLEV of LCD_DISPCTRL
register to LEVEL1
VBLEV of LCD_DISPCTRL
register to LEVEL2
Boost Voltage
VBLEV of LCD_DISPCTRL
register to LEVEL3
VBLEV of LCD_DISPCTRL
register to LEVEL4
VBLEV of LCD_DISPCTRL
register to LEVEL5
VBLEV of LCD_DISPCTRL
register to LEVEL6
VBLEV of LCD_DISPCTRL
register to LEVEL7
Typ
30
Max
36×8
Unit
200 Hz
seg
2.0
3.8 V
250
nA
550
nA
0
µA
8.4
µA
3.02
V
3.15
V
3.28
V
3.41
V
3.54
V
3.67
V
3.73
V
3.74
V
The total LCD current is given by Equation 3.3 (p. 48) . I_LCDBOOST is zero if internal boost is off.
Total LCD Current Based on Operational Mode and Internal Boost
I_LCDTOTAL = I_LCD + I_LCDBOOST
(3.3)
2014-05-23 - EFM32GG995FXX - d0080_Rev1.30
48
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