參數(shù)資料
型號(hào): 73K302L-IP
廠商: TDK Corporation
英文描述: Single-Chip Modem
中文描述: 單芯片調(diào)制解調(diào)器
文件頁(yè)數(shù): 21/29頁(yè)
文件大?。?/td> 282K
代理商: 73K302L-IP
73K302L
Bell 212A, 103, 202
Single-Chip Modem
21
DYNAMIC CHARACTERISTICS AND TIMING PARALLEL CONTROL INTERFACE
PARAMETER
Timing
(Refer to Timing Diagrams)
CONDITION
MIN
NOM
MAX
UNIT
TAL
CS
/ADDr. setup before ALE Low
CS
/ADDr. hold after ALE Low
ALE Low to
RD
/
WR
Low
RD
/
WR
Control to ALE High
Data out from
RD
Low
15
ns
TLA
20
ns
TLC
30
ns
TCL
-5
ns
TRD
140
ns
TLL
ALE width
Data float after
RD
High
RD
width
WR
width
Data setup before
WR
High
Data hold after
WR
High
WR
width
Data out from
RD
Low
Data float after
RD
High
30
ns
TRDF
90
ns
TRW
200
ns
TWW
140
ns
TDW
40
ns
TWD
25
ns
TWW
140
25000
ns
TRD
140
ns
TRDF
50
ns
TCKD
Data out after EXCLK Low
WR
after EXCLK Low
200
ns
TCKW
200
ns
TDCK
Write data setup before EXCLK Low
150
ns
TAC
Address setup before control*
50
ns
TCA
Address hold after control*
50
ns
TWH
Data hold after EXCLK
85
*
Control for setup is the falling edge of
RD
or
WR
.
Control for hold is the falling edge of
RD
or the rising edge of
WR
.
NOTE: Asserting ALE,
CS
, and
RD
or
WR
concurrently can cause unintentional register accesses. When using
non-8031 compatible processors, care must be taken to prevent this from occurring when designing the
interface logic.
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