參數(shù)資料
型號: W83C42P
英文描述: KEYBOARD CONTROLLER
中文描述: 鍵盤控制器
文件頁數(shù): 5/15頁
文件大?。?/td> 89K
代理商: W83C42P
W83C42
Publication Release Date: July 1994
- 5 -
Revision A3
AC TIMING
NO.
DESCRIPTION
MIN.
MAX.
UNIT
T1
Address Setup Time from WR
0
nS
T2
Address Setup Time from RD
0
nS
T3
WR Strobe Width
20
nS
T4
RD Strobe Width
20
nS
T5
Address Hold Time from WR
0
nS
T6
Address Hold Time from RD
0
nS
T7
Data Setup Time
50
nS
T8
Data Hold Time
0
nS
T9
Gate Delay Time from WR
10
nS
T10
RD to Drive Data Delay
20
nS
T11
RD to Floating Data Delay
0
20
nS
T12
Data Valid After Clock Falling (SEND)
4
μ
S
μ
S
μ
S
μ
S
μ
S
μ
S
T13
K/B Clock Period
20
T14
K/B Clock Pulse Width
10
T15
Data Valid Before Clock Falling (RECEIVE)
4
T16
K/B ACK After Finish Receiving
20
T17
RC Fast Reset Pulse Delay (8 MHz)
2
3
T18
RC Pulse Width (8 MHz)
6
μ
S
T19
Transmit Timeout
2
mS
T20
Data Valid Hold Time
0
μ
S
nS
T21
X
IN
/X
OUT
Period ( 6-12 MHz )
83
167
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