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IP82C55A 数据表(PDF) 21 Page - Intersil Corporation

部件名 IP82C55A
功能描述  CMOS Programmable Peripheral Interface
PDF  29 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  INTERSIL [Intersil Corporation]
网页  http://www.intersil.com/cda/home
标志 INTERSIL - Intersil Corporation

IP82C55A 数据表(HTML) 21 Page - Intersil Corporation

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21
FN2969.10
November 16, 2006
FIGURE 28. MODE 1 (STROBED OUTPUT)
FIGURE 29. MODE 2 (BIDIRECTIONAL)
NOTE:
Any sequence where WR occurs before ACK and STB occurs before RD is permissible. (INTR = IBF
• MASK • STB • RD + OBF • MASK
• ACK • WR)
Timing Waveforms (Continued)
tWOB (21)
tWB (12)
tAK (15)
tAIT (27)
tAOB (22)
tWIT
OBF
WR
INTR
ACK
OUTPUT
(28)
tWOB
tAOB
tAK
tAD (19)
tKD
tPH (18)
tPS (17)
tSIB
tST
OBF
WR
INTR
ACK
IBF
STB
PERIPHERAL
BUS
RD
tRIB (24)
DATA FROM
PERIPHERAL TO 82C55A
DATA FROM
82C55A TO PERIPHERAL
DATA FROM
82C55A TO CPU
DATA FROM
CPU TO 82C55A
(21)
(22)
(15)
(16)
(20)
(23)
(NOTE)
(NOTE)
82C55A



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