參數(shù)資料
型號: M30102M6T-XXXFP
元件分類: 微控制器/微處理器
英文描述: 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP48
封裝: 7 X 7 MM, 0.50 MM PITCH, PLASTIC, LQFP-48
文件頁數(shù): 28/166頁
文件大?。?/td> 2060K
代理商: M30102M6T-XXXFP
Under
development
Tentative Specifications REV.E1
Specifications in this manual are tentative and subject to change.
Mitsubishi microcomputers
M30100/M30102 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Programmable I/O Port
120
Programmable I/O Ports
There are 34 programmable I/O ports: P0 to P4 (when M30102). Each port can be set independently for
input or output using the direction register. A pull-up resistance for each block of 4 ports can be set. The port
P1 allows the drive capacity of its N-channel output transistor to be set as necessary. The port P1 can be
used as LED drive port if the drive capacity is set to “HIGH”.
Figures 1.18.1 to 1.18.4 show the programmable I/O ports.
Each pin functions as a programmable I/O port and as the I/O for the built-in peripheral devices.
To use the pins as the inputs for the built-in peripheral devices, set the direction register of each pin to input
mode. When the pins are used as the outputs for the built-in peripheral devices (other than the D-A con-
verter), they function as outputs regardless of the contents of the direction registers. When pins are to be
used as the outputs for the D-A converter, do not set the direction registers to output mode. See the
descriptions of the respective functions for how to set up the built-in peripheral devices.
(1) Direction registers
Figure 1.18.5 shows the direction registers.
These registers are used to choose the direction of the programmable I/O ports. Each bit in these regis-
ters corresponds one for one to each I/O pin.
(2) Port registers
Figure 1.18.6 shows the port registers.
These registers are used to write and read data for input and output to and from an external device. A
port register consists of a port latch to hold output data and a circuit to read the status of a pin. Each bit
in port registers corresponds one for one to each I/O pin.
(3) Pull-up control registers
Figure 1.18.7 shows the pull-up control registers.
The pull-up control register can be set to apply a pull-up resistance to each block of 4 ports. When ports
are set to have a pull-up resistance, the pull-up resistance is connected only when the direction register is
set for input.
(4) Port P1 drive capacity control register
Figure 1.18.7 shows a structure of the port P1 drive capacity control register.
This register is used to control the drive capacity of the port P1's N-channel output transistor. Each bit in
this register corresponds one for one to the port pins.
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