參數(shù)資料
型號： ST78C34IJ44
廠商： STARTECH SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： GENERAL PURPOSE PARALLEL PRINTER PORT WITH 83 BYTE FIFO
中文描述： 17 I/O, PIA-PRINTER INTERFACE, PQCC44
文件頁數(shù)： 9/21頁
文件大?。?/td> 198K
代理商： ST78C34IJ44
6-11
ST78C34
Rev. 3.00
Bit-5
Bit-4
INT output
STR
bit-0
STR
bit-6
0
0
1
1
0
1
0
1
Normal mode
FIFO empty
FIFO full
FIFO empty
1
1
1
0
-ACK
FIFO empty
FIFO full
FIFO empty
AFR BIT-6:
INT output polarity.
0= Normal. INT output follows the -ACK input
1= Inverted INT output
AFR BIT-7:
FIFO enable / disable function.
0= FIFO is disabled( default mode).
1= FIFO is enabled. Internal 83 byte of FIFO is
enabled.
FIFO BYTE COUNT REGISTER (FBCR)
State and content of the printer FIFO can be moni-
tored by reading this register.
FCBR BIT 0-6:
FIFO byte count. Number of characters left in FIFO.
FCRB bit-0 is the LSB bit of the counter and FCRB bit-
6 is the MSB bit of the counter.
FBCR BIT-7:
FIFO state.
0= FIFO is enabled
1= FIFO is disabled
ST78C34 EXTERNAL RESET CONDITION
SIGNALS
RESET STATE
PD0-PD7
-STROBE
-AUTOFDXT
INIT
-SLCTIN
Unknown, output mode
High
High
Low
High
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ST78C34IP40 GENERAL PURPOSE PARALLEL PRINTER PORT WITH 83 BYTE FIFO
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參數(shù)描述
ST78C34IP40 制造商:EXAR 制造商全稱:EXAR 功能描述:GENERAL PURPOSE PARALLEL PRINTER PORT WITH 83 BYTE FIFO
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