数据搜索系统,热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

ST78C34IP40 数据表(PDF) 7 Page - Exar Corporation

部件名 ST78C34IP40
功能描述  GENERAL PURPOSE PARALLEL PRINTER PORT WITH 83 BYTE FIFO
Download  21 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  EXAR [Exar Corporation]
网页  http://www.exar.com
标志 EXAR - Exar Corporation

ST78C34IP40 数据表(HTML) 7 Page - Exar Corporation

Back Button ST78C34IP40 Datasheet HTML 3Page - Exar Corporation ST78C34IP40 Datasheet HTML 4Page - Exar Corporation ST78C34IP40 Datasheet HTML 5Page - Exar Corporation ST78C34IP40 Datasheet HTML 6Page - Exar Corporation ST78C34IP40 Datasheet HTML 7Page - Exar Corporation ST78C34IP40 Datasheet HTML 8Page - Exar Corporation ST78C34IP40 Datasheet HTML 9Page - Exar Corporation ST78C34IP40 Datasheet HTML 10Page - Exar Corporation ST78C34IP40 Datasheet HTML 11Page - Exar Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 7 / 21 page
background image
6-9
ST78C34
Rev. 3.00
written into the FIFO and the counter will not incre-
ment.
Two interrupt modes are available and are selected
with the INTSEL pin. If this pin is tied low, a latched
interrupt will result. In this mode, INT will transition low
when a “1” is written to Control Register bit-0. A reset
or reading the Status Register will clear the interrupt.
If INTSEL pin is tied high, INT will transition low when
a “1” is written to Control Register bit-0 and will
transition high when a write to the parallel port is
issued. This (non-latched) interrupt signal is always
available in Status Register bit-6 regardless of the
state of the INTSEL pin. Status Register bit-2 will
always contain the latched interrupt state. The polarity
of the INT pin may be inverted by setting Alternate
Function Register bit-6 high.
The ST78C34 provides additional programmable in-
terrupt output options by programming the Alternate
Function Register bit 4-5. INT output can be selected
as FIFO full or FIFO empty interrupt.
REGISTER DESCRIPTIONS
PORT REGISTER
Bi-directional printer port.
Writing to this register during output mode will transfer
the contents of the data bus to the PD7-PD0 ports .
Reading this register during input mode will transfer
the states of the PD7-PD0 to the data bus. This
register will be set to the output mode after reset.
PR BIT 7-0:
PD7-PD0 bi-directional I/O ports.
STATUS REGISTER
This register provides the state of the printer outputs
and the interrupt condition.
STR BIT 1-0:
This bits are set to “1” normally except when AFR bit
5-4 are both set to “1”.
STR BIT-2:
Interrupt condition.
0= an interrupt is pending
This bit will be set to “0” at the falling edge of the -ACK
input.
1= no interrupt is pending
Reading the STATUS REGISTER will set this bit to
“1”.
STR BIT-3:
ERROR input state.
0= ERROR input is in low state
1= ERROR input is in high state
STR BIT-4:
SLCT input state.
0= SLCT input is in low state
1= SLCT input is in high state
STR BIT-5:
PE input state.
0= PE input is in low state
1= PE input is in high state
STR BIT-6:
-ACK input state.
0= -ACK input is in low state
1= -ACK input is in high state
STR BIT-7:
BUSY or FIFO full signal.
0= BUSY input is in high state
1= BUSY input is in low state
FIFO is enabled.
0= FIFO is full
1= One or more empty locations in FIFO
COMMAND REGISTER
The state of the -STROBE, -AUTOFDXT, INIT, -
SLCTIN pins, and interrupt enable bit can be read by
this register regardless of the I/O direction.
COM BIT-0:
-STROBE input pin.
0= -STROBE pin is in high state
1= -STROBE pin is in low state
COM BIT-1:
-AUTOFDXT input pin.
0= -AUTOFDXT pin is in high state
1= -AUTOFDXT pin is in low state


类似零件编号 - ST78C34IP40

制造商部件名数据表功能描述
logo
Exar Corporation
ST78C36 EXAR-ST78C36 Datasheet
133Kb / 26P
   ECP/EPP PARALLEL PRINTER PORT WITH 16-BYTE FIFO
ST78C36 EXAR-ST78C36 Datasheet
636Kb / 28P
   ECP/EPP PARALLEL PRINTER PORT WITH 16-BYTE FIFO
ST78C36 EXAR-ST78C36 Datasheet
643Kb / 27P
   ECP/EPP PARALLEL PRINTER PORT WITH 16-BYTE FIFO
ST78C36A EXAR-ST78C36A Datasheet
133Kb / 26P
   ECP/EPP PARALLEL PRINTER PORT WITH 16-BYTE FIFO
ST78C36A EXAR-ST78C36A Datasheet
636Kb / 28P
   ECP/EPP PARALLEL PRINTER PORT WITH 16-BYTE FIFO
More results

类似说明 - ST78C34IP40

制造商部件名数据表功能描述
logo
Exar Corporation
ST78C36 EXAR-ST78C36_05 Datasheet
636Kb / 28P
   ECP/EPP PARALLEL PRINTER PORT WITH 16-BYTE FIFO
ST78C36 EXAR-ST78C36 Datasheet
133Kb / 26P
   ECP/EPP PARALLEL PRINTER PORT WITH 16-BYTE FIFO
ST78C36CJ44-F EXAR-ST78C36CJ44-F Datasheet
643Kb / 27P
   ECP/EPP PARALLEL PRINTER PORT WITH 16-BYTE FIFO
ST16C552 EXAR-ST16C552 Datasheet
222Kb / 39P
   DUAL UART WITH 16-BYTE FIFO AND PARALLEL PRINTER PORT
logo
IMP, Inc
IMP16C552 IMP-IMP16C552 Datasheet
783Kb / 34P
   Dual Universal Asynchronous Receiver/Transmitter (UART) with 16-BYTE FIFO & Parallel Printer Port
logo
Exar Corporation
ST16C452 EXAR-ST16C452 Datasheet
162Kb / 30P
   DUAL UART WITH PARALLEL PRINTER PORT
ST16C452CJ68PS-F EXAR-ST16C452CJ68PS-F Datasheet
164Kb / 30P
   DUAL UART WITH PARALLEL PRINTER PORT
logo
Texas Instruments
TL16C754 TI-TL16C754 Datasheet
488Kb / 39P
[Old version datasheet]   QUAD UART WITH 64-BYTE FIFO
logo
NXP Semiconductors
SC16C754 PHILIPS-SC16C754 Datasheet
622Kb / 49P
   Quad UART with 64-byte FIFO
Rev. 04-19 June 2003
logo
Texas Instruments
TL16C750E TI1-TL16C750E Datasheet
1Mb / 59P
[Old version datasheet]   TL16C750E UART with 128-Byte FIFO
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21


数据表 下载

Go To PDF Page


链接网址




隐私政策
ALLDATASHEETCN.COM
ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   链接交换   |   制造商名单
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com