參數(shù)資料
型號(hào): UPD753036
廠商: NEC Corp.
元件分類: 4位微控制器
英文描述: 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER
中文描述: 4位單片機(jī)的小型通用紅外遙控器
文件頁數(shù): 21/88頁
文件大小: 373K
代理商: UPD753036
21
μ
PD753036, 753036(A)
Data Sheet U11353EJ4V0DS00
6. PERIPHERAL HARDWARE FUNCTIONS
6.1 Digital I/O Port
The following four types of I/O ports are available:
CMOS input (PORT0 and 1)
CMOS I/O (PORT2, 3, 6, 7, and 8) : 20 pins
N-ch open-drain I/O (PORT4 and 5) :
Bit port output (BP0 through BP7)
Total
:
8 pins
8 pins
8 pins
: 44 pins
:
Table 6-1. Types and Features of Digital Ports
Port Name
Function
Operation & Features
Remarks
PORT0
4-bit input
When using serial interface function, the dual function
pin can function as the output port depending on the
operation mode.
Also used as the INT4,
SCK, SO/SB0, SI/SB1 pins.
PORT1
4-bit input port
Also used as the INT0-
INT2 and TI0 pins.
PORT2
4-bit I/O
Can be set to input mode or output mode in 4-bit
units.
Also used as the PTO0-
PTO2, PCL, BUZ pins.
PORT3
Can be set to input mode or output mode in 1-bit
units.
Also used as the LCDCL,
SYNC pins.
PORT4
4-bit I/O
(N-channel
open-drain,
13 V with-
stand voltage)
Can be set to input mode
or output mode in 4-bit
units.
Ports 4 and 5 are paired
and data can be input/
output in 8-bit units.
On-chip pull-up resistor can
be specified bit-wise by
mask option.
PORT5
PORT6
4-bit I/O
Can be set to input mode
or output mode in 1-bit
units.
Ports 6 and 7 are paired
and data can be input/
output in 8-bit units.
Also used as the KR0-KR3
pins.
PORT7
Can be set to input mode
or output mode in 4-bit
units.
Also used as the KR4-KR7
pins.
PORT8
Can be set to input mode or output mode in 4-bit
units
Also used as the TI1, TI2,
AN6, AN7 pins.
BP0-BP7
1-bit output
Outputs data bit-wise. Can be switched to LCD drive
segment output S24-S31 by software.
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