參數(shù)資料
型號: CQ82C55A96
廠商: Intersil
文件頁數(shù): 14/29頁
文件大?。?/td> 0K
描述: IC I/O EXPANDER 24B 44MQFP
標準包裝: 500
接口: 可編程
輸入/輸出數(shù): 24
中斷輸出:
電源電壓: 4.5 V ~ 5.5 V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 44-QFP
供應(yīng)商設(shè)備封裝: 44-MQFP(10x10)
包裝: 管件
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)
82C55A
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