參數資料
型號: SCN68681E1N40
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: Dual asynchronous receiver/transmitter DUART
中文描述: 2 CHANNEL(S), 1M bps, SERIAL COMM CONTROLLER, PDIP40
文件頁數: 22/28頁
文件大?。?/td> 187K
代理商: SCN68681E1N40
Philips Semiconductors
Product specification
SCN68681
Dual asynchronous receiver/transmitter (DUART)
1998 Sep 04
22
t
RXS
t
RXH
RxC
(1X INPUT)
RxD
SD00093
Figure 12. Receive Timing
TRANSMITTER
ENABLED
TxD
D1
D2
D3
D4
D6
BREAK
TxRDY
(SR2)
CSN
(WRITE)
D1
D2
D3
D4
D6
START
BREAK
STOP
BREAK
D5 WILL
NOT BE
TRANSMITTED
CTSN
1
(IP0)
RTSN
2
(OP0)
OPR(0) = 1
OPR(0) = 1
NOTES:
1. Timing shown for MR2(4) = 1.
2. Timing shown for MR2(5) = 1.
SD00118
Figure 13. Transmitter Timing
D1
D2
D3
D4
D5
D6
D7
D8
RxD
D6, D7, D8 WILL BE LOST
RECEIVER
ENABLED
RxRDY
(SR0)
FFULL
(SR1)
RxRDY/
FFULL
(OP4)
2
CSN
(READ)
STATUS DATA
D1
STATUS DATA
D2
STATUS DATA
D3
STATUS DATA
D4
D5 WILL
BE LOST
OVERRUN
(SR4)
RESET BY COMMAND
RTS
1
(OP0)
OPR(0) = 1
NOTES:
1. Timing shown for MR1(7) = 1.
2. Shown for OPCR(4) and MR1(6) = 0.
SD00119
Figure 14. Receive Timing
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