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參數(shù)資料
| 型號(hào)： | ST16C550 |
| 廠商： | Exar Corporation |
| 英文描述： | UART with 16-Byte FIFO(通用異步接收器/發(fā)送器（帶16字節(jié)的先進(jìn)先出）) |
| 中文描述： | 的UART具有16字節(jié)FIFO（通用異步接收器/發(fā)送器（帶16字節(jié)的先進(jìn)先出）） |
| 文件頁數(shù)： | 4/36頁 |
| 文件大小： | 235K |
| 代理商： | ST16C550 |
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ST16C550
4
Rev. 4.20
Symbol
Pin
44
Signal
type
Pin Description
40
48
SYMBOL DESCRIPTION
A0
28
31
28
I
Address-0 Select Bit Internal registers address selection.
A1
27
30
27
I
Address-1 Select Bit Internal registers address selection.
A2
26
29
26
I
Address-2 Select Bit Internal registers address selection.
IOR
22
25
20
I
Read data strobe. Its function is the same as -IOR (see -
IOR), except it is active high. Either an active -IOR or IOR
is required to transfer data from 16C550 to CPU during a
read operation. Connect to logic 0 when using -IOR.
CS0
12
14
9
I
Chip Select-0. Logical 1 on this pin provides the chip select-
0 function. Connect CS0 to logic 1 if using CS1 or -CS2.
CS1
13
15
10
I
Chip Select-1. Logical 1 on this pin provides the chip select-
1 function. Connect CS1 to logic 1 if using CS0 or -CS2.
-CS2
14
16
11
I
Chip Select -2. Logical 0 on this pin provides the chip select-
2 function. Connect to logic 0 if using CS0 or CS1.
IOW
19
21
17
I
Write data strobe. Its function is the same as -IOW (see -
IOW), but it acts as an active high input signal. Either -IOW
or IOW is required to transfer data from the CPU to
ST16C550 during a write operation. Connect to logic 0 when
using -IOW.
-AS
25
28
24
I
Address Strobe. A logic 1 transition on -AS latches the state
of the chip selects and the register select bits, A0-A2. This
input is used when address and chip selects are not stable
for the duration of a read or write operation, i.e., a micropro-
cessor that needs to de-multiplex the address and data bits.
If not required, the -AS input can be permanently tied to a
logic 0.
D0-D7
1-8
2-9
43-47
2-4
I/O
Data Bus (Bi-directional) - These pins are the eight bit, tri-
state data bus for transferring information to or from the
controlling CPU. D0 is the least significant bit and the first
data bit in a transmit or receive serial data stream.
GND
20
22
18
Pwr
Signal and Power Ground.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ST16C552 | Dual UART with 16-Byte FIFO and Parallel Printer Port(雙通用異步接收器/發(fā)送器（帶16字節(jié)的先進(jìn)先出和并行打印機(jī)端口）) |
| ST16C552A | Dual UART with 16-Byte FIFO and Parallel Printer Port(雙通用異步接收器/發(fā)送器（帶16字節(jié)的先進(jìn)先出和并行打印機(jī)端口）) |
| ST16C554DCJ68 | QUAD UART WITH 16-BYTE FIFOS |
| ST68C554 | QUAD UART WITH 16-BYTE FIFOS |
| ST16C554DIJ68 | Plug-In Relay; Contacts:DPDT; Contact Carry Current:15A; Coil Voltage AC Max:120V; Relay Mounting:Plug-In; Relay Terminals:Quick Connect; Coil Resistance:4430ohm RoHS Compliant: Yes |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST16C550_05 | 制造商:EXAR 制造商全稱:EXAR 功能描述:UART WITH 16-BYTE FIFO’s |
| ST16C550CJ44 | 制造商:Exar 功能描述:Bulk |
| ST16C550CJ44-F | 功能描述:UART 接口集成電路 2.97V-5.5V 16B FIFO temp 0C to 70C; UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| ST16C550CJ44TR-F | 功能描述:UART 接口集成電路 SNGL UART W/16BYTE FIFO RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| ST16C550CP40 | 功能描述:UART 接口集成電路 SINGLE UART W/16 BYTE FIFO RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
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