參數(shù)資料
型號(hào)： PS2000ACQ
英文描述： A Network Communication Controller Designed to Connect Any MCU Application System To A Gateway(單片網(wǎng)絡(luò)通信控制器,用于控制MCU和網(wǎng)絡(luò)服務(wù)器之間的信息交換)
中文描述： 通信控制器的網(wǎng)絡(luò)連接任何設(shè)計(jì)單片機(jī)應(yīng)用系統(tǒng)到一個(gè)網(wǎng)關(guān)（單片網(wǎng)絡(luò)通信控制器，用于控制微控制器和網(wǎng)絡(luò)服務(wù)器之間的信息交換）
文件頁(yè)數(shù)： 40/54頁(yè)
文件大?。?/td> 594K
代理商： PS2000ACQ
PS2000A Datasheet
Doc. Number:
TECINHD001
Version 1.0
3/1/2002
P&S DataCom Corporation
36
8052
U3
P10
P11
P12
P13
P14
P15
P16
P17
/CS
CLK
DI
DO
/CS
CLK
DI
DO
X25C02
X25C02
U1
U2
Figure 25 An MCS-51 Application System
In Figure 25, U1 and U2 are NVMs (Non-Volatile Memory). They both connect to the
MCU through an SPI interface and are able to Read/Write with the same access address
of 0~0FFh. If both U1 and U2 are defined as NVM of MCU, they can’t be
distinguished.
In this case, these two memories can be defined as “user-defined memory”, for example,
U1 is defined as 0C4h and U2 as 0C5h, so that the network server can easily distinguish
them.
The device password in the PS2000A should be up to 13 characters of ASCII string and
end with “NULL”. Otherwise, the password is invalid.
The super password in the PS2000A should be up to 7 characters of ASCII string and end
with “NULL”. Otherwise, the password is invalid.
The PS2000A supports up to 17 digits (or other valid characters) of ASCII string for a
telephone number and it should end with “NULL”.
11.2
Loading the Device Property Table
The loading of the Device Property Table in the PS2000A can be accomplished by the
network server or the Device Property Table Generating Tool (DPTGT).
The Device Property Table is the most important information in the PS2000A. It should
not be modified without authority. The Device Property Table of the PS2000A is
protected through a super password, which can be set and modified by the network server
or the DPTGT.
The super password of the PS2000A is specified as an ASCII string of 7 characters ended
with “NULL”. The PS2000A will refuse to receive a super password which is less or
greater than 7 characters.
The name of the super password of the PS2000A should only be “$Super_PW+NULL”
of ASCII code.
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