HD404849 Datasheet, PDF (104/125 Pages) Hitachi Semiconductor – 4-Bit Single-Chip Microcomputer

V_CC (V₁ )
R
V₂
R
V₃
R
GND
C
C
C
HD404849 Series
V_CC (V₁ )
R
V₂
R
V₃
R
GND
V_CC
V_LCD
V_{CC COM1} ¹
. ^{4-digit LCD}
V₁
V₂
V₃
GND
SEG13
to
SEG44
32
Static drive
V_CC
V_LCD
V_CC
COM1
COM2
2
V₁
V₂
V₃
SEG13
to
SEG44
32
GND
1/2 duty, 1/2 bias drive
. ^{8-digit LCD}
V_CC
V_LCD
V_CC
COM1
to
3
V₁ ^COM3
10-digit LCD
. with sign
V_{2 SEG13}
32
V₃
to
GND ^SEG44
1/3 duty, 1/3 bias drive
V_CC
V_LCD
V_CC ≥ V_LCD ≥ GND
V_CC
COM1
to
V₁ ^COM4
V_{2 SEG13}
V₃
to
GND ^SEG44
4
32
1/4 duty, 1/3 bias drive
. ^{16-digit LCD}
Figure 89 LCD Connection Examples
104