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HD404849 Datasheet, PDF (7/127 Pages) Hitachi Semiconductor – 4-Bit Single-Chip Microcomputer | |||
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HD404849 Series
Item
LCD
Symbol
V1, V2, V3
A/D converter
COM1â
COM4
SEG13â
SEG44
AVCC
AVSS
AN0âAN7
Pin Number
FP-80A, TFP-80C FP-80B
70â72
72â74
66â69
68â71
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:
VCC ⥠V1 ⥠V2 ⥠V3 ⥠GND
O Common signal pins for LCD
34â65
36â67
O Segment signal pins for LCD
74
3
75â80, 1, 2
76
5
77â80, 1â4 I
Power pin for A/D converter: Connect
it to the same potential as VCC, as
physically close to the VCC pin as
possible
Ground for AVCC: 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
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