HD404849 Datasheet, PDF (5/125 Pages) Hitachi Semiconductor – 4-Bit Single-Chip Microcomputer

HD404849 Series
Item
LCD
Symbol
V₁, V₂, V₃
A/D converter
COM1–
COM4
SEG13–
SEG44
AV_CC
AV_SS
AN₀–AN₇
Pin Number
FP-80A, TFP-80C FP-80B
70–72
72–74
66–69
68–71
I/O Function
Power pins for LCD driver. The LCD
power supply division resistors can be
connected and disconnected as
controlled by software.
Voltage conditions are:
V_CC ≥ V₁ ≥ V₂ ≥ V₃ ≥ GND
O Common signal pins for LCD
34–65
36–67
O Segment signal pins for LCD
74
3
75–80, 1, 2
76
5
77–80, 1–4 I
Power pin for A/D converter: Connect
it to the same potential as V_CC, as
physically close to the V_CC pin as
possible
Ground for AV_CC: Connect it to the
same potential as GND, as physically
close to the GND pin as possible
Analog input pins for A/D converter
5