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參數(shù)資料
| 型號： | CDP1854 |
| 廠商： | Intersil Corporation |
| 英文描述： | Programmable Universal Asynchronous Receiver/Transmitter (UART) |
| 中文描述： | 可編程通用異步接收器/發(fā)送器（UART） |
| 文件頁數(shù)： | 12/21頁 |
| 文件大?。?/td> | 95K |
| 代理商： | CDP1854 |
5-53
NOTES:
1. If a start bit occurs at a time less than t
DC
before a high-to-low transition of the clock, the start bit may not be recognized until the next
high-to-low transition of the clock. The start bit may be completely asynchronous with the clock.
2. Read is the overlap of CS1, CS3, RD/WR = 1 and CS2 = 0. If a pending DA has not been cleared by a read of the Receiver Holding
Register by the time a new word is loaded into the Receiver Holding Register, the OE signal will come true.
3. OE and PE share terminal 15 and are also available as two separate bits in the status register.
FIGURE 4. MODE 1 RECEIVER TIMING DIAGRAM
R CLOCK
READ
(NOTE 2)
t
CC
t
CL
t
CH
t
DC
1
2
START BIT
t
TDA
CLOCK 7 1/2
SAMPLE
3
4
5
6
7
16
(NOTE 1)
SDI
1
2
3
4
5
6
7
8
9
STOP BIT 1
CLOCK 7 1/2 LOAD
HOLDING REGISTER
t
CDA
t
TT
t
COE
t
CPE
t
CFE
OE
PE
(NOTE 3)
FE
PARITY
DA
TPB
(NOTE 3)
NOTE:
1. Write is the overlap of TPB, CS1, CS3 = 1 and CS2, RD/WR = 0.
FIGURE 5. MODE 1 CPU INTERFACE (WRITE) TIMING DIAGRAM
t
RSW
t
WRS
t
TT
t
WD
t
DW
TPB
(NOTE 1)
T BUS 0-
T BUS 7
RD/WR, CS2
(NOTE 1)
CS3, CS1
(NOTE 1)
RSEL
CDP1854A, CDP1854AC
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CDP1854AEX | Programmable Universal Asynchronous Receiver/Transmitter (UART) |
| CDP1854AC | Programmable Universal Asynchronous Receiver/Transmitter (UART) |
| CDP1854ACD | Programmable Universal Asynchronous Receiver/Transmitter (UART) |
| CDP1854ACDX | Programmable Universal Asynchronous Receiver/Transmitter (UART) |
| CDP1854ACE | Programmable Universal Asynchronous Receiver/Transmitter (UART) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CDP1854 DIE | 制造商:Harris Corporation 功能描述: |
| CDP1854A | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:High Reliability CMOS Programmable Universal Asynchronous Receiver/Transmitter (UART) |
| CDP1854A WAF | 制造商:Harris Corporation 功能描述: |
| CDP1854A/3 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Programmable Universal Asynchronous Receiver/Transmitter (UART) |
| CDP1854A_1 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:High Reliability CMOS Programmable Universal Asynchronous Receiver/Transmitter (UART) |
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