參數(shù)資料
型號(hào)： X88C75PI
英文描述： Port Expander and E2 Memory
中文描述： 端口擴(kuò)展和E2內(nèi)存
文件頁(yè)數(shù)： 15/27頁(yè)
文件大?。?/td> 125K
代理商： X88C75PI
X88C75 SLIC
E
2
15
Example 3
If an application requires larger program memory stor-
age and both extra ports, then example 2 does not meet
this requirement. Since the LAM feature uses port B to
output the non-multiplexed address, then port B cannot
be also used as general purpose I/O. The solution to this
problem is to use X68C64, which interfaces to a multi-
plexed bus and takes an active HIGH CE input. Example
3 maps the X68C64 to the top 8K program memory
space in the range of 8000-FFFFH. This approach
provides a total of 16K-bytes of program memory. Using
the same approach, two additional X68C64 device can
be added and A13-A14 can be used as their CE inputs,
Figure 17. Example 4
Figure 16. Example 3
for the total of 32K-bytes of program memory. Ports A
and B are still available to handle any general purpose
I/O functions.
Example 4
For those applications using extensive I/O, up to 128
I/O pins are obtained by placing 8 of the X88C75 devices
on the same bus. This approach gives a total of 64K-
bytes of program memory space, and 128 I/O pins. Note
that the SFRM can overlap the
E
2
M address space,
however, only the SFR resources are accessible and
the associated E
2
memory location are not available.
ALE
WR
RD
PSEN
ALE
WR
RD
PSEN
CE
CE
E
AS
SEL
WR
A/D7-A/D0
A12-A8
EA
A15
2887 ILL F20
STRA
PA
X88C75
8051
X68C64
A15:8
AD7:0
AD7:0
A15:8
STRB
PB
RESET
ALE
WR
RD
PSEN
EA
X8C5
8051
A15:8
2887 ILL F21
AD7:0
PA
ALE
WR
RD
PSEN
CE
STRB
PB
STRA
128 I/O
RESET
相關(guān)PDF資料
PDF描述
X88C75PM Port Expander and E2 Memory
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X9102PI Digital Potentiometer
X9102S Digital Potentiometer
X9102SI Digital Potentiometer
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
X88C75PM 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Port Expander and E2 Memory
X8934 功能描述:固態(tài)繼電器-工業(yè)安裝 0381 SLD. R RELAY RoHS:否 制造商:Crydom 控制電壓范圍:4 VDC to 32 VDC 負(fù)載電壓額定值:7 VDC to 72 VDC 負(fù)載電流額定值:160 A 觸點(diǎn)形式: 輸出設(shè)備:SSR 安裝風(fēng)格:Panel
X8989-34 制造商:Cooper Crouse-Hinds 功能描述: 制造商:CROUSE-HINDS/COOPER 功能描述:
X89C205VGEAF 制造商:USMC 功能描述:
X8-A11-C02-A 功能描述:Zigbee/802.15.4模塊 Connect port IP/Xbee RF/DiN Products RoHS:否 制造商:Digi International 頻帶:902 MHz to 928 MHz 視線范圍: 數(shù)據(jù)速率: 靈敏度: 工作電源電壓:2.4 V to 3.6 V 傳輸供電電流:215 mA 接收供電電流:26 mA 輸出功率:250 mW 天線連接器類型:Wire 最大工作溫度:+ 85 C 尺寸:32.94 mm x 22 mm x 2.03 mm
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