參數(shù)資料
型號: UPD75117H
廠商: NEC Corp.
英文描述: 4-BIT SINGLE-CHIP MICROCOMPUTER
中文描述: 4位單片機(jī)
文件頁數(shù): 18/66頁
文件大?。?/td> 472K
代理商: UPD75117H
18
μ
PD75116H,75117H
5.
PERIPHERAL HARDWARE FUNCTIONS
5.1
PORT
There are the following three digital input/output ports.
CMOS input (PORT0, PORT1)
CMOS input/output (PORT2 to PORT9)
N-ch open-drain input/output (PORT12 to PORT14) :
Total
:
:
8
32
12
52
:
Table 5-1 Port Function
Port Name
Function
Operation/Features
Remarks
4-bit input
4-bit input/output
4-bit input/output
(N-ch open-drain +6
V withstand voltage)
Regardless of the operating mode of the shared
pin, reading or test is always possible.
Can be set in the input or output bit-wise.
Can be set in the input or output mode as a 4-
bit unit. Ports 4 and 5, 6 and 7, and 8 and 9 are
paired and data input/output is possible as an
8-bit unit.
Can be set to input or output mode as a 4-bit
unit. Ports 12 and 13 are paired and data input/
output is possible as an 8-bit unit.
These pins are shared with SI,
SO, SCK, INT0 to INT4.
Port 2, PTO0, PTO1, and PCL share
the same pins.
On-chip pull-up resistor specifi-
able bit-wise by mask option.
PORT 0
PORT 1
PORT 3
*1
PORT 6
*1
PORT 2
*1
PORT 4
*1
PORT 5
*1
PORT 7
*1
PORT 8
*1
PORT 9
*1
PORT12
*2
PORT13
*2
PORT14
*2
* 1.
When V
DD
= 5 V, I
OL
= 15 mA.
When V
DD
= 5 V, I
OL
= 10 mA.
2.
#
#
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