HD6475328CG Datasheet, PDF (41/459 Pages) Hitachi Semiconductor – Manual Gives a Hardware Description

Table 1-4 Pin Functions (cont)
Pin No.
CP-84,
Type
Symbol CG-84 FP-80A I/O Name and Function
Serial com- TXD
80
66
O Transmit Data: Data output pins for the
munication
serial communication interface.
interface
signals
RXD
81
67
I Receive Data: Data input pins for the
serial communication interface.
SCK
82
68
I/O Serial Clock: Input/output pin for the
serial interface clock.
A/D
AN7 – AN0 73 – 66 59 – 52 I Analog Input: Analog signal input pins.
converter
AVCC*
74
60
I Analog Reference Voltage: Reference voltage
and power supply pin for the A/D converter.
AVSS*
65
51
I Analog Ground: Ground pin for the A/D
converter.
Parallel
P17 – P10 10 – 3 79 – 72 I/O Port 1: An 8-bit input/output port. The
I/O
direction of each bit is determined by the port 1
data direction register (P1DDR).
P24 – P20 15 – 11 4 – 1, I/O Port 2: A 5-bit input/output port. The
80
direction of each bit is determined by the port 2
data direction register (P2DDR).
P37 – P30 32 – 25 20 – 13 I/O Port 3: An 8-bit input/output port. The
direction of each bit is determined by the port 3
data direction register (P3DDR).
P47 – P40 40 – 33 28 – 21 I/O Port 4: An 8-bit input/output port. The
direction of each bit is determined by the port 4
data direction register (P4DDR). These pins
can drive LED indicators.
* When A/D converter is not used, AVCC should be connected to VCC, and AVSS should be
connected to GND.
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