Electronic component search and free download site. Transistors,MosFET ,Diode,Integrated circuits
English
한국어
日本語
русский
简体中文
español
Номер в каталоге
Компоненты Описание
MD82C55A Просмотр технического описания (PDF) - Harris Semiconductor
Номер в каталоге
Компоненты Описание
производитель
MD82C55A
CMOS Programmable Peripheral Interface
Harris Semiconductor
MD82C55A Datasheet PDF : 26 Pages
First
Prev
11
12
13
14
15
16
17
18
19
20
Next
Last
Timing Waveforms
(Continued)
WR
OBF
82C55A
tWOB (21)
tAOB (22)
INTR
ACK
OUTPUT
tWIT
(28)
tAK (15)
tWB (12)
FIGURE 28. MODE 1 (STROBED OUTPUT)
tAIT (27)
DATA FROM
CPU TO 82C55A
WR
OBF
INTR
ACK
tWOB
(21)
tAOB
(22)
tAK
(15)
(NOTE)
STB
IBF
PERIPHERAL
BUS
tST
(16)
tSIB
(23)
tPS (17)
(NOTE)
tAD (19)
tKD
(20)
tPH (18)
tRIB (24)
RD
DATA FROM
DATA FROM
PERIPHERAL TO 82C55A
82C55A TO PERIPHERAL
DATA FROM
82C55A TO CPU
FIGURE 29. MODE 2 (BI-DIRECTIONAL)
NOTE: Any sequence where WR occurs before ACK and STB occurs before RD is permissible. (INTR = IBF
•
MASK
•
STB
•
RD
•
OBF
•
MASK
•
ACK
•
WR)
20
Share Link:
datasheetq.com [
Privacy Policy
]
[
Request Datasheet
] [
Contact Us
]