參數(shù)資料
型號: SCC2698B
廠商: NXP Semiconductors N.V.
英文描述: Enhanced octal universal asynchronous receiver/transmitter (Octal UART)(增強(qiáng)型八通用異步接收器/傳送器)
中文描述: 增強(qiáng)八進(jìn)制通用異步接收器/發(fā)送器(八路的UART)(增強(qiáng)型八通用異步接收器/傳送器)
文件頁數(shù): 20/29頁
文件大?。?/td> 167K
代理商: SCC2698B
Philips Semiconductors
Product specification
SCC2698B
Enhanced octal universal asynchronous
receiver/transmitter (Octal UART)
2000 Jan 31
20
AC Electrical characteristics
1, 2, 3, 4
T
A
= 0 to +70 , V
CC
= 5.0 V
10%, –40 to 85 C
SYMBOL
FIGURE
PARAMETER
LIMITS
Typ
UNIT
Min
Max
Reset timing
t
RES
Bus timing
5
t
HS
t
AH11
t
CS6
t
CH6
t
RW
t
DD
t
DF
t
DS
t
DH
t
RWD7
MPI and MPO timing
5
t
PS
t
PH
5
Reset pulse width
200
ns
6
6
6
6
6
6
6
6
6
A0–A5 setup time to RDN, WRN Low
A0–A5 hold time from RDN, WRN Low
CEN setup time to RDN, WRN Low
CEN hold time from RDN, WRN High
WRN, RDN pulse width Low
Data valid after RDN Low
Data bus floating after RDN High
Data setup time before WRN High
Data hold time after WRN High
Time between reads and/or writes
10
100
0
0
225
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
200
80
100
10
100
7
7
MPI or MPP input setup time before RDN Low
MPI or MPP input hold time after RDN High
MPO output valid from
WRN High
RDN Low
0
0
ns
ns
t
PD
7
250
250
ns
ns
Interrupt timing
t
IR
8
INTRN negated or MPP output High from:
Read RHR (RxRDY/FFULL interrupt)
Write THR (TxRDY interrupt)
Reset command (break change interrupt)
Reset command (MPI change interrupt)
Stop C/T command (counter interrupt)
Write IMR (clear of interrupt mask bit)
270
270
270
270
270
270
ns
ns
ns
ns
ns
ns
Clock timing
t
CLK
t
CLK
t
CTC
f
CTC
t
RX
f
RX
9
9
9
9
9
9
X1/CLK high or low time
X1/CLK frequency
10
Counter/timer clock high or low time
Counter/timer clock frequency
RxC high or low time
RxC frequency (16X)
RxC frequency (1X)
TxC high or low time
TxC frequency (16X)
TxC frequency (1X)
120
0
120
0
8
200
0
8
0
8
200
0
8
0
8
ns
MHz
ns
MHz
ns
MHz
MHz
ns
MHz
MHz
3.6864
4.0
4.0
2.0
1.0
t
TX
f
TX
9
9
2.0
1.0
Transmitter timing
t
TXD
t
TCS
Receiver timing
t
RXS
t
RXH
10
10
TxD output delay from TxC low
TxC output delay from TxD output data
350
150
ns
ns
0
11
11
RxD data setup time to RxC high
RxD data hold time from RxC high
50
100
ns
ns
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