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參數(shù)資料
型號(hào)： PSD301R-20JM
廠商： 意法半導(dǎo)體
英文描述： Low Cost Field Programmable Microcontroller Peripherals
中文描述： 低成本現(xiàn)場(chǎng)可編程微控制器外圍設(shè)備
文件頁(yè)數(shù)： 18/85頁(yè)
文件大?。?/td> 691K
代理商： PSD301R-20JM
15
PSD3XX Famly
10.0
I/OPort
Functions
The PSD3XX has three I/O ports (Ports A, B, and C) that are configurable at the bit level.
This permits great flexibility and a high degree of customization for specific applications.
The next section describes the control registers for the ports. Following that are sections
that describe each port. Figures 5 through 7 show the structure of Ports A through C,
respectively.
Note:
any unused input should be connected directly to ground or pulled up to V
CC
(using a 10K
to 100K
resistor).
10.1 CSIOPORT Registers
Control of the ports is primarily handled through the CSIOPORT registers. There are 24
bytes in the address space, starting at the base address labeled CSIOPORT. Since the
PSD3XX uses internal address lines A15-A8 for decoding, the CSIOPORT space will
occupy 2 Kbytes of memory, on a 2 Kbyte boundary. This resolution can be improved to
reduce wasted address space by connecting lower order address lines (A7 and below)
to Port C. Using this method, resolution down to 256 Kbytes may be achieved. The
CSIOPORT space
must be defined in your PSDsoft design file
. The following tables list
the registers located in the CSIOPORT space.
16-Bit Users Note
When referring to Table 5B, realize that Ports A and B are still accessible on a byte basis.
Note: When accessing Port B on a 16-bit data bus, BHE must be low.
Table 5A. CSIOPORT Registers for 8-Bit Data Busses
NOTE:
1. ZPSD only.
Ofset (in hex)
fromCSIOPORT
Base Address
Type of
Access
Allowed
Register Name
Port A Pin Register
Port A Direction Register
Port A Data Register
Port B Pin Register
Port B Direction Register
Port B Data Register
Power Management Register (Note 1)
Page Register
+2
+4
+6
+3
+5
+7
+10
+18
Read
Read/Write
Read/Write
Read
Read/Write
Read/Write
Read/Write
Read/Write
Table 5B. CSIOPORT Registers for 16-Bit Data Busses
NOTE:
1. ZPSD only.
Ofset (in hex)
fromCSIOPORT
Base Address
Type of
Access
Allowed
Register Name
Port A/B Pin Register
Port A/B Direction Register
Port A/B Data Register
Power Management Register (Note 1)
Page Register
+2
+4
+6
+10
+18
Read
Read/Write
Read/Write
Read/Write
Read/Write
相關(guān)PDF資料
PDF描述
PSD301V-15J 5015 RR 37#16 PIN RECP
PSD301V-15JI Low Cost Field Programmable Microcontroller Peripherals
PSD301V-15JM 5015 RR 7#12 40#16 PIN RECP
PSD301V-20J 5015 RR 5#16S SKT RECP
PSD301V-20JI 5015 RR 3#16S SKT RECP
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