1-8
Mitsubishi microcomputers
M30240 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Preliminary Specifications REV. E
Specifications in this manual are tentative and subject to change
Pin Description
1.6 Pin Description
Table 1.3:
Figure Pin Description
Pin #
Name
I/O
Description
1
P8
7
I/O
CMOS I/O port. This pin also functions as an external trigger for A-D conversion.
2
P8
6
I/O
CMOS I/O port. This pin also functions as the start of frame (SOF) pulse for the
USB module.
3
P8
5
/(NMI)
I
CMOS input port. This pin also functions as a non-maskable external interrupt.
4,5
P8
4
~ P8
3
I/O
CMOS I/O port. These pins also functions as external interrupt 1 and are used
to enable the stealth detach function for the USB transceiver.
6
EXTCAP
_
An external capacitor (Ext. Cap) pin. When the USB transceiver voltage
converter is used, a 2.2
μ
F and a 0.1
μ
F capacitor should connect between this
pin and V
ss
to ensure proper operation of the USB line driver. This option is
enabled by setting bit 4 of the USB control register (000C
16
) to a “1”.
7
BYTE
I
Connect this pin to Vss
8
CNV
ss
I
Connect this pin to Vss
9
USB D
+
I/O
USB D+ voltage line interface, a series resistor of 33
is connected to this pin.
10
USB D
-
I/O
USB D- voltage line interface, a series resistor of 33
is connected to this pin.
11
RESET
I
A “L” on this input resets the microcomputer.
12
Xout
O
See Xin
13
V
ss
I
Ground: V
ss
= 0V
14
Xin
I
Input and output signals to and from the internal clock generation circuit.
Connect a ceramic resonator or quartz crystal between Xin and Xout pins to set
the oscillation frequency. If an external clock is used, connect the clock source
to the Xin pin and leave the Xout pin open.
15
V
cc
I
Power: V
cc
= 4.1~ 5.25V
16
P8
2
I/O
CMOS I/O port. This pin also functions as external interrupt 0.
17-18
P8
1
~ P8
0
I/O
CMOS I/O port. Pins in this port also function as TimerA4 input and output as
selected by software.
19-22
P7
7
~ P7
4
I/O
CMOS I/O port. Pins in this port also function as timer pins.
P7
7
and P7
6
can function as TimerA3 input and output as selected by software.
P7
5
and P7
4
can function as TimerA2 input and output as selected by software.
23-26
P7
3
~ P7
0
I/O
CMOS I/O port. Pins in this port also function as UART2 CTS, RTS, CLK, RXD,
and TXD as selected by software.
P7
3
and P7
2
can function as TimerA1 input and output as selected by software.
P7
1
and P7
0
can function as TimerA0 input and output as selected by software.
27-30
P6
7
~ P6
4
I/O
CMOS I/O port. Pins in this port also function as UART1 CTS, RTS, CLK, Serial
Clock, RXD, and TXD as selected by software. TXD(OE~) and RTS(SUSPEND)
in addition to D+ and D- can be used to run the device in USB bypass mode.
31-34
P6
3
~ P6
0
I/O
CMOS I/O port. Pins in this port also function as UART0 CTS, RTS, CLK, RXD,
and TXD as selected by software.
35-42
P3
7
~ P3
0
I/O
CMOS I/O port.
43-50
P2
7
/LED7
~ P2
0
/LED0
I/O
CMOS I/O port. These pins are capable of driving up to 20mA (peak) for LEDs.