71M6543F/H and 71M6543G/GH Data Sheet
Parameter
Condition
Min
Typ
Max
Unit
V3P3 = 3.3 V,
RVLCD=removed, LCD_BAT=0,
LCD_VMODE[1:0]=0,
∆ILCD=10 µA
VSYS to VLCD switch impedance
750
Ω
V3P3 = 0 V, VBAT = 2.5 V,
RVLCD =removed, LCD_BAT =1,
LCD_VMODE[1:0]=0,
∆ILCD=10 µA
LCD_VMODE[1:0] = 2,
RVLCD = removed,
CVLCD = removed
PLL_FAST=1
VBAT to VLCD switch impedance
LCD Boost Frequency
700
Ω
820
786
kHz
kHz
PLL_FAST=0
LCD_VMODE[1:0] = 2,
LCD_CLK[1:0] = 2,
RVLCD = removed,
V3P3 = 3.3V,
VLCD IOH current
(VLCD(0)-VLCD(IOH)<0.25)
10
µA
LCD_DAC[4:0] = 1F
From LCDADJ0 and LCDADJ12 fuses:
퐿퐶퐷퐴퐷퐽12 − 퐿퐶퐷퐴퐷퐽0
(
)
ꢂ
ꢃ
퐿퐶퐷퐴퐷퐽 퐿퐶퐷_퐷퐴퐶 = 5푚푉 퐿퐶퐷퐴퐷퐽0 +
퐿퐶퐷_퐷퐴퐶
12
퐿퐶퐷_퐷퐴퐶
(
)
(
)
푉퐿퐶퐷ꢄ푂ꢅ 퐿퐶퐷_퐷퐴퐶 = 2.65 + 2.65
+ 퐿퐶퐷퐴퐷퐽 퐿퐶퐷_퐷퐴퐶
31
The above equations describe the nominal value of VLCD for a specific LCD_DAC value. The
specifications below list the maximum deviation between actual VLCD and VLCDnom. Note that when
VCC and boost are insufficient, the LCD DAC will not reach its target value and a large negative error
will occur.
LCD_DAC Error. VLCD-VLCDnom
Full Scale, with Boost
V3P3 =3.6 V
LCD_VMODE = 10,
LCD_DAC[4:0] = 1F,
LCD_CLK[1:0]=2,
LCD_MODE[2:0]=6
0.15
0.15
0.15
V
V
V
V
-0.15
-0.4
-0.15
-1.3
V3P3 =3.0 V
VBAT=4.0 V, V3P3=0, BRN Mode
VBAT=2.5 V, V3P3=0, BRN Mode
LCD_DAC Error. VLCD-VLCDnom
DAC=12, with Boost
V3P3 = 3.6 V
LCD_VMODE = 10,
LCD_DAC[4:0] = C,
LCD_CLK[1:0]=2,
LCD_MODE[2:0]=6
-0.15
-0.15
-0.15
0.15
0.15
0.15
V
V
V
V3P3 = 3.0 V
VBAT = 2.5 V, V3P3 = 0 V, BRN Mode
LCD_DAC Error. VLCD-VLCDnom
Zero Scale, with Boost
V3P3 = 3.6 V
LCD_VMODE = 2,
LCD_DAC[4:0] =0,
LCD_CLK[1:0]=2,
LCD_MODE[2:0]=6
-0.15
-0.15
-0.15
-0.15
0.15
0.15
0.15
0.15
V
V
V
V
V3P3 = 3.0 V
VBAT = 4.0 V, V3P3 = 0 V, BRN Mode
VBAT = 2.5 V, V3P3 = 0 V, BRN Mode
LCD_DAC Error. VLCD-VLCDnom
Full Scale, no Boost
V3P3 = 3.6 V (see note 1)
V3P3 = 3.0 V (see note 1)
VBAT = 4.0 V, V3P3 = 0 V, BRN Mode
VBAT = 2.5 V, V3P3 = 0 V, BRN Mode
LCD_DAC Error. VLCD-VLCDnom
DAC=12, no Boost
LCD_VMODE = 1,
LCD_DAC[4:0] = 1F,
LCD_CLK[1:0]=2,
LCD_MODE[2:0]=6
-2.1
-2.8
-1.8
-3.2
V
V
V
V
LCD_VMODE = 1,
LCD_DAC[4:0] = C,
LCD_CLK[1:0]=2,
LCD_MODE[2:0]=6
-0.5
-1.1
V
V
V
V
V3P3 = 3.6 V
V3P3 = 3.0 V
VBAT = 4.0 V, V3P3 = 0 V, BRN Mode
VBAT = 2.5 V, V3P3 = 0 V, BRN Mode
-0.151
-1.51
0.151
v1.2
© 2008–2011 Teridian Semiconductor Corporation
141
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