參數(shù)資料
型號： P82L42PC
廠商： INTEL CORP
元件分類： 微控制器/微處理器
英文描述： UNIVERSAL PERIPHERAL INTERFACE CHMOS 8-BIT SLAVE MICROCONTROLLER
中文描述： 8-BIT, MROM, MICROCONTROLLER, PDIP40
封裝： PLASTIC, DIP-40
文件頁數(shù)： 5/25頁
文件大?。?/td> 305K
代理商： P82L42PC
UPI-C42/UPI-L42
UPI-42 COMPATIBLE FEATURES
1.
Two Data Bus Buffers, one for input and one for
output. This allows a much cleaner Master/Slave
protocol.
290414–5
2.
8 Bits of Status
ST
7
ST
6
ST
5
ST
4
F
1
F
0
IBF OBF
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
ST
4
–ST
7
are user definable status bits. These
bits are defined by the ‘‘MOV STS, A’’ single
byte, single cycle instruction. Bits 4–7 of the
acccumulator are moved to bits 4–7 of the status
register. Bits 0–3 of the status register are not
affected.
MOV STS, A
Op Code: 90H
1
0
0
1
0
0
0
0
D
7
D
0
3.
RD and WR are edge triggered. IBF, OBF, F
1
and
INT change internally after the trailing edge of RD
or WR.
During the time that the host CPU is reading the
status register, the UPI is prevented from updat-
ing this register or is ‘locked out.’
290414–6
4.
P
24
and P
25
are port pins or Buffer Flag pins
which can be used to interrupt a master proces-
sor. These pins default to port pins on Reset.
If the ‘‘EN FLAGS’’ instruction has been execut-
ed, P
24
becomes the OBF (Output Buffer Full)
pin. A ‘‘1’’ written to P
24
enables the OBF pin (the
pin outputs the OBF Status Bit). A ‘‘0’’ written to
P
24
disables the OBF pin (the pin remains low).
This pin can be used to indicate that valid data is
available from the UPI (in Output Data Bus Buff-
er).
If ‘‘EN FLAGS’’ has been executed, P
25
be-
comes the IBF (Input Buffer Full) pin. A ‘‘1’’ writ-
ten to P
25
enables the IBF pin (the pin outputs
the inverse of the IBF Status Bit. A ‘‘0’’ written to
P
25
disables the IBF pin (the pin remains low).
This pin can be used to indicate that the UPI is
ready for data.
Data Bus Buffer Interrupt Capability
290414–7
EN FLAGS
Op Code: 0F5H
1
1
1
1
0
1
0
1
D
7
D
0
5.
P
26
and P
27
are port pins or DMA handshake
pins for use with a DMA controller. These pins
default to port pins on Reset.
If the ‘‘EN DMA’’ instruction has been executed,
P
26
becomes the DRQ (DMA Request) pin. A ‘‘1’’
written to P
26
causes a DMA request (DRQ is
activated). DRQ is deactivated by DACK
#
RD,
DACK
#
WR, or execution of the ‘‘EN DMA’’ in-
struction.
DMA Handshake Capability
290414–8
5
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
P82L42PD 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:UNIVERSAL PERIPHERAL INTERFACE CHMOS 8-BIT SLAVE MICROCONTROLLER
P82OW 制造商:Hubbell Premise Wiring 功能描述:Connectors Accessories For Use With:Sta 制造商:Hubbell Wiring Device-Kellems 功能描述:WALL PLATE, NYLON, GANG, WHITE; Series:P82; Accessory Type:Faceplate; For Use With:Standard Duplex Receptacles; No. of Module Spaces:4; Connector Body Material:Nylon (Polyamide); Connector Color:White; Body Material:Nylon ;RoHS Compliant: Yes
P82R 制造商:Hubbell Premise Wiring 功能描述:Connectors Accessories For Use With:Sta
P82W 制造商:Hubbell Premise Wiring 功能描述:Connectors Accessories For Use With:Sta 制造商:Hubbell Premise Wiring 功能描述:Connector Accessories Straight Wall Plate Nylon White 制造商:Hubbell Wiring Device-Kellems 功能描述:Connector Accessories Straight Wall Plate Nylon White
P82X 制造商:Hubbell Premise Wiring 功能描述:Connectors Accessories For Use With:Sta 制造商:Hubbell Premise Wiring 功能描述:Connector Accessories Straight Wall Plate Nylon Brown 制造商:Hubbell Wiring Device-Kellems 功能描述:Connector Accessories Straight Wall Plate Nylon Brown
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