- 您現在的位置：買賣IC網 > PDF目錄379857 > CDP1854AQ (HARRIS SEMICONDUCTOR) Programmable Universal Asynchronous Receiver/Transmitter (UART) PDF資料下載
參數資料
| 型號： | CDP1854AQ |
| 廠商： | HARRIS SEMICONDUCTOR |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Programmable Universal Asynchronous Receiver/Transmitter (UART) |
| 中文描述： | 1 CHANNEL(S), 400K bps, SERIAL COMM CONTROLLER, PQCC44 |
| 文件頁數： | 12/21頁 |
| 文件大?。?/td> | 95K |
| 代理商： | CDP1854AQ |
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PDF資料 |
PDF描述 |
|---|---|
| CDP1855 | 8-Bit Programmable Multiply/Divide Unit |
| CDP1855C | 8-Bit Programmable Multiply/Divide Unit |
| CDP1855CD | 8-Bit Programmable Multiply/Divide Unit |
| CDP1855CDX | 8-Bit Programmable Multiply/Divide Unit |
| CDP1855CE | 8-Bit Programmable Multiply/Divide Unit |
相關代理商/技術參數 |
參數描述 |
|---|---|
| CDP1854A-Q | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| CDP1855 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:8-Bit Programmable Multiply/Divide Unit |
| CDP1855_1 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:8-Bit Programmable Multiply/Divide Unit |
| CDP1855C | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:8-Bit Programmable Multiply/Divide Unit |
| CDP1855CD | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:8-Bit Programmable Multiply/Divide Unit |
發(fā)布緊急采購，3分鐘左右您將得到回復。