HD404848 Просмотр технического описания (PDF) - Hitachi -> Renesas Electronics

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HD404848

4-Bit Single-Chip Microcomputer

Hitachi -> Renesas Electronics 

HD404849 Series

Item

LCD

Symbol

V1, V2, V3

A/D converter

COM1–

COM4

SEG13–

SEG44

AVCC

AVSS

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:

VCC ≥ 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 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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