參數(shù)資料
型號: μPD789177Y
廠商: NEC Corp.
英文描述: 8 Bit Single Chip Microcontrollers(8 位單片微控制器)
中文描述: 8位單片機微控制器(8位單片微控制器)
文件頁數(shù): 26/145頁
文件大?。?/td> 610K
代理商: ΜPD789177Y
Preliminary Product Information
25
μ
PD789166Y, 789167Y, 789176Y, 789177Y
Table 5-1. Port Functions
Port name
Pin name
Description
Port 0
P00-P05
Input/output port. Each bit of the port can be separately specified as being for input or output.
A port used for input can be connected to an on-chip pull-up resistor by means of software
specification.
Port 1
P10, P11
Input/output port. Each bit of the port can be separately specified as being for input or output.
A port used for input can be connected to an on-chip pull-up resistor by means of software
specification.
Port 2
P20-P26
Input/output port. Each bit of the port can be separately specified as being for input or output.
Each of P20 to P22, P25, and P26 can be connected to an on-chip pull-up resistor by means of
software specification.
(P23 and P24 are used as N-channel open-drain input/output ports (with 5-V withstand
voltage).)
Port 3
P30-P33
Input/output port. Each bit of the port can be separately specified as being for input or output.
The port can be connected to an on-chip pull-up resistor by means of software specification.
Port 5
P50-P53
N-channel open-drain input/output port. Each bit of the port can be separately specified as
being for input or output.
Whether the port itself is to contain a pull-up resistor is specified with a mask option.
Port 6
P60-P67
Input-only port
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