參數資料
型號: UPD72001G-11-22
廠商: NEC Corp.
英文描述: MULTI-PROTOCOL SERIAL CONTROLLERS
中文描述: 多協(xié)議串行控制器
文件頁數: 18/40頁
文件大?。?/td> 206K
代理商: UPD72001G-11-22
μ
PD72001-11, 72001-A8
18
Modem control:
Parameter
Symbol
Condition
Rated Value
Unit
MIN.
MAX.
CTS, DCD, SYNC pulse
width
High
t
WMH
2
t
CYK
Low
t
WML
2
t
CYK
CTS, DCD, SYNC
INT delay time
t
DMIQ
2
t
CYK
STR
X
C, TR
X
C
SYNC setup time
T
SSYRC
COP external synchronization
0
2
t
CYK
Communication control:
Parameter
Symbol
Condition
Rated Value
Unit
MIN.
MAX.
Transmit enable command
(WR
, CTS
)
T
X
D delay time
t
DTETD1
ASYNC, COP
3
t
CYC
t
DTETD2
BOP
4
7
t
CYC
Receive enable command (DCD
)
setup time (vs. start bit, STR
X
C
,
TR
X
C
of sync character)
Note
t
SRERC
1
t
CYC
Receive enable command (DCD
)
hold time (vs. STR
X
C
, TR
X
C
)
Note
t
HRCRE1
ASYNC
7
t
CYK
t
HRCRE2
COP
20t
CYC
+ 8t
CYK
t
HRCRE3
BOP
3t
CYC
+ 8t
CYK
Receive clock (STR
X
C, TR
X
C)
Note
hold time (vs. stop bit, MSB of CRC,
MSB of end flag)
t
HRDRC1
ASYNC
1
Bit
t
HRDRC2
COP
22
t
CYC
t
HRDRC3
BOP
5
t
CYC
Receive clock (STR
X
C, TR
X
C)
Note
t
SRCRD1
ASYNC
1
Bit
setup time (vs. start bit, sync character)
t
SRCRD2
COP, BOP
1
t
CYC
Note
Of STR
X
C and TR
X
C, the one used as the receive clock.
Crystal oscillation and reset
Parameter
Symbol
Condition
Rated Value
Unit
MIN.
MAX.
XI1 input cycle time
t
CYX
90
2000
ns
RESET pulse width
t
WRSL
2
t
CYK
Caution The system clock cycle in all modes must be five times that of the data rate.
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