HD404618 Datasheet, PDF (5/89 Pages) Hitachi Semiconductor – 4-Bit Single-Chip Microcomputer

Pin Number
Pin Number
FP-80B
FP-80A,
TFP-80
Pin Name I/O FP-80B
65
63
COM1
O 73
66
64
COM2
O 74
67
65
COM3
O 75
68
66
COM4
O 76
69
67
70
68
71
69
72
70
V₁
V₂
V₃
TONEC
77
78
79
O 80
Note: I/O: Input/output pin, I: Input pin, O: Output pin
FP-80A,
TFP-80
71
72
73
74
75
76
77
78
HD404618 Series
Pin Name I/O
TONER
O
VT _ref
V_CC
OSC₁
I
OSC₂
O
RESET
I
D₀
I/O
D₁
I/O
Pin Functions
Power Supply
V_CC: Apply power voltage to this pin.
GND: Connect to ground.
TEST: Used for test purposes only. Connect it to V_CC.
RESET: Resets the MCU.
Oscillators
OSC₁, OSC₂: Used as pins for the internal oscillator circuit. They can be connected to a ceramic
resonator, or OSC₁ can be connected to an external oscillator circuit.
X1, X2: Used for a 32.768-kHz crystal oscillator that acts as a clock.
Ports
D₀–D₁₃ (D Port): Input/output port addressable by individual bits. D₀–D₉ are I/O pins and D₁₀–D₁₃ are
input pins. D₀–D₉ are high current output pins (15 mA, max.). D₁₁–D₁₃ are also available as voltage
comparators.
R0–R3 (R Ports): Input/output ports addressable in 4-bit units. R0₀, R0₁, R0₂, R3₁, R3₂, and R3₃, are
multiplexed with SCK, SI, SO, TIMO, INT₀, and INT₁, respectively.
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