参数资料
型号: PSD835G2V-A-15B81I
厂商: 意法半导体
英文描述: Configurable Memory System on a Chip for 8-Bit Microcontrollers
中文描述: 在8片位微控制器可配置存储系统
文件页数: 55/110页
文件大小: 570K
代理商: PSD835G2V-A-15B81I
PSD8XX Family
PSD835G2
54
The
PSD835G2
Functional
Blocks
(cont.)
9.4.2 Port Operating Modes
The I/O Ports have several modes of operation. Some modes can be defined using
PSDsoft, some by the microcontroller writing to the 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, Address Input, Peripheral I/O and MCU Reset modes 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 16 summarizes which modes are available on each port. Table 17 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
Port E
Port F
Port G
MCU I/O
Yes
Yes
Yes
Yes
Yes
Yes
Yes
PLD I/O
McellA Outputs
McellB Outputs
Additional Ext. CS Outputs
PLD Inputs
Yes
No
No
Yes
No
Yes
No
Yes
No
No
Yes
Yes
No
No
No
Yes
No
No
No
No
No
No
Yes
Yes
No
No
No
No
Address Out
No
No
No
No
Yes
(A7-0)
Yes
(A7-0)
Yes
(A7-0)
or
(A15-8)
Address In
Yes
Yes
Yes
Yes
No
Yes
No
Data Port
No
No
No
No
No
Yes
No
Peripheral I/O
No
No
No
No
No
Yes
No
JTAG ISP
No
No
No
No
Yes*
No
No
Table 16. Port Operating Modes
*
Can be multiplexed with other I/O functions.
相关PDF资料
PDF描述
PSD835G2V-A-15J Configurable Memory System on a Chip for 8-Bit Microcontrollers
PSD835G2V-A-15JI Configurable Memory System on a Chip for 8-Bit Microcontrollers
PSD835G2V-A-15M Configurable Memory System on a Chip for 8-Bit Microcontrollers
PSD835G2V-A-15MI Configurable Memory System on a Chip for 8-Bit Microcontrollers
PSD835G2V-A-15U Configurable Memory System on a Chip for 8-Bit Microcontrollers
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