參數(shù)資料
型號(hào): PSD954F2V-90M
廠商: 意法半導(dǎo)體
英文描述: Flash In-System Programmable ISP Peripherals For 8-bit MCUs
中文描述: Flash在系統(tǒng)可編程ISP的外設(shè)的8位微控制器
文件頁(yè)數(shù): 48/94頁(yè)
文件大?。?/td> 476K
代理商: PSD954F2V-90M
PSD9XX Family
Preliminary Information
44
The
PSD9XX
Functional
Blocks
(cont.)
9.4.2 Port Operating Modes
The I/O Ports have several modes of operation. Some modes can be defined in
PSDsoft, some by the microcontroller writing to the Control Registers in CSIOP space, and
some by both. The modes that can only be defined using PSDsoft must be
programmed into the device and cannot be changed unless the device is reprogrammed.
The modes that can be changed by the microcontroller can be done so dynamically
at run-time. The PLD I/O, Data Port, and Address Input, are the only modes that must
be defined before programming the device. All other modes can be changed by the
microcontroller at run-time.
Table 20 summarizes which modes are available on each port. Table 23 shows how and
where the different modes are configured. Each of the port operating modes are described
in the following subsections.
Port Mode
Port A
Port B
Port C
Port D
MCU I/O
Yes
Yes
Yes
Yes
PLD Outputs
Yes
Yes
No
Yes
PLD Inputs
Yes
Yes
Yes
Yes
Address Out
Yes (A7– 0)
Yes (A7– 0)
or A15– 8)
No
No
Address In
Yes
Yes
Yes
Yes
Data Port
Yes (D7– 0)
No
No
No
JTAG ISP
No
No
Yes
No
Table 20. Port Operating Modes
相關(guān)PDF資料
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PSD954F2V-12JI Flash In-System Programmable ISP Peripherals For 8-bit MCUs
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