
Chapter 1
Overview
I - 12
Pin Description
1.3.3
Pin Functions
Table:1.3.2 Pin Functions
Name
TQFP 48
Pin No.
I/O
Other Function
Function
Description
VDD
17
41
65
94
-
Power supply pin
Power pin for 5 V, digital IO
Apply 5 V to all of pins and connect capacitor
of over 10
F between VDD and VSS pins.
VDD2
42
98
-
Power supply pin
Power pin for 1.8 V, digital IO
Connect capacitor of over 10
F between all
of the VDD2 and VSS pins. .
VSS
15
38
67
96
-
Power supply pin
GND for digital
VDD3
40
Power supply pin
Power pin for 3.3 V, flash
Connect capacitor of over 10
F between
VDD3 and VSS pins.
VPPEX
39
-
Power supply pin
Power for flash EEPROM
Connect with VDD3.
N, C for mask ROM version
OSC1
OSC0
37
36
input
output
-
Clock input pin
Clock output pin
Extend ceramic or crystal oscillators or input
a clock to OSC1.
NRST
48
input
-
Reset pins
(negative logic)
This pin resets the chip when power is turned
on and contains an internal pull-up resistor.
Setting this pin “L” level initialize the internal
state of the device. Thereafter, setting the
input to “H” level releases the reset. The
hardware waits for the system clock to
stabilize, then processes the reset interrupt.
Connect capacitor of over 0.1
F between
NRST and VSS pins.
P10
P11
P12
P13
P14
P15
P16
P17
43
44
45
46
47
49
50
51
I/O
IRQ04
IRQ05
IRQ06
IRQ07
IRQ08
TM6IO
TM7IO
SBO2
I/O port 1
8-bit COMS I/O port.
Each bit can be set individually as either an
input or output by the P1DIR register.
A pull-up resistor for each bit can be selected
individually by the P1PLU register.
At reset, the input mode (P10 to P17) is
selected, and pull-up resistor is disable.
P20
P21
P22
P23
P24
P25
P26
P27
52
53
54
55
56
57
58
59
I/O
SBT2
SBI2
SBO1
SBT1
SBI1
SBO0
SBT0
SBI0
I/O port 2
8-bit COMS I/O port.
Each bit can be set individually as either an
input or output by the P2DIR register.
A pull-up resistor for each bit can be selected
individually by the P2PLU register.
At reset, the input mode (P20 to P27) is
selected, and pull-up resistor is disable.
P30
P31
P32
P33
P34
P35
P36
P37
60
61
62
63
64
66
68
69
I/O
TM0IO
TM1IO
TM2IO
TM3IO
TM4IO
TM5IO
TM8AIO
TM8BIO
I/O port 3
8-bit COMS I/O port.
Each bit can be set individually as either an
input or output by the P3DIR register.
A pull-up resistor for ech bit can be selected
individually by the P3PLU register.
At reset, the input mode (P30 to P37) is
selected, pull-up resistor is disable.