H83834U datasheet(21/497 Pages) RENESAS

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1.3.2 Pin Functions

Table 1-2 outlines the pin functions of the H8/3834U Series.

Table 1-2 Pin Functions

Pin No.

Type

Symbol

FP-100B

FP-100A

I/O

Name and Functions

VCC

31, 76

34, 79

Input

Power supply: All VCC pins should

be connected to the system power

supply (+5 V)

VSS

6, 27

9, 30

Input

Ground: All VSS pins should be

connected to the system power supply

(0 V)

AVCC

Input

Analog power supply: This is the

power supply pin for the A/D converter.

When the A/D converter is not used,

connect this pin to the system power

supply (+5 V).

AVSS

Input

Analog ground: This is the A/D

converter ground pin. It should be

connected to the system power supply

(0 V).

V1,

30,

33,

Input

LCD power supply: These are power

V2,

29,

32,

supply pins for the LCD controller/

driver. A built-in resistor divider is

provided for the power supply, so

these pins are normally left open.

Power supply conditions are

VCC ≥ V1 ≥ V2 ≥ V3 ≥ VSS.

System clock: This pin connects to a

crystal or ceramic oscillator, or can be

used to input an external clock.

See section 4, Clock Pulse

Generators, for a typical connection

diagram.

Subclock: This pin connects to a

32.768-kHz crystal oscillator.

See section 4, Clock Pulse

Generators, for a typical connection

diagram.

Clock pins

OSC1

Input

OSC2

Output

Input

Output

Power

source pins

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