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參數(shù)資料
| 型號： | XR16L580IM |
| 廠商： | EXAR CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | SMALLEST 2.25V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE |
| 中文描述： | 1 CHANNEL(S), 3.125M bps, SERIAL COMM CONTROLLER, PQFP48 |
| 封裝： | 7 X 7 MM, 1 MM HEIGHT, TQFP-48 |
| 文件頁數(shù)： | 8/47頁 |
| 文件大?。?/td> | 285K |
| 代理商： | XR16L580IM |
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XR16L580
SMALLEST 2.25V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE
á
REV. 1.2.0
8
2.8
The L580 includes an on-chip oscillator (XTAL1 and XTAL2) to generate a clock when a crystal is connected
between the XTAL1 and XTAL2 pins of the device. Alternatively, an external clock can be supplied through the
XTAL1 pin. The CPU data bus does not require this clock for bus operation. The crystal oscillator provides a
system clock to the Baud Rate Generators (BRG) section found in each of the UART. XTAL1 is the input to the
oscillator or external clock input and XTAL2 pin is the bufferred output which can be used as a clock signal for
other devices in the system. Please note that the input XTAL1 is not 5V tolerant and therefore, the maximum
voltage at the pin should be VCC when an external clock is supplied. For programming details, see
“Programmable Baud Rate Generator.”
F
IGURE
4. T
YPICAL
C
RYSTAL
CONNECTIONS
Crystal or External Clock Input
The on-chip oscillator is designed to use an industry standard microprocessor crystal (parallel resonant,
fundamental frequency with 10-22 pF capacitance load, ESR of 20-120 ohms and 100ppm frequency
tolerance) connected externally between the XTAL1 and XTAL2 pins (see Figure 5). When VCC = 5V, the on-
chip oscillator can operate with a crystal whose frequency is not greater than 24 MHz. On the other hand, the
L580 can accept an external clock of up to 50MHz at XTAL1 pin, with a 2K ohms pull-up resistor on XTAL2 pin
(as shown in
Figure 5
). This translates to a maximum of 3.125Mbps serial data rate at 5V.
T
ABLE
2: INT (IRQ#) P
IN
O
PERATION
F
OR
R
ECEIVER
FCR B
IT
-0 = 0
(FIFO D
ISABLED
)
FCR B
IT
-0 = 1
(FIFO E
NABLED
)
INT Pin
(16/68# = 1)
0 = no data
1 = 1 byte
0 = FIFO below trigger level
1 = FIFO above trigger level
IRQ# Pin
(16/68# = 0)
1 = no data
0 = 1 byte
1 = FIFO below trigger level
0 = FIFO above trigger level
C1
22-47pF
C2
22-47pF
Y1
1.8432 MHz
to
24 MHz
R1
0-120
(Optional)
R2
500K - 1M
XTAL1
XTAL2
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XR16L580IM-0A-EVB | 功能描述:UART 接口集成電路 Supports L580 48 ld TQFP, ISA Interface 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 |
| XR16L580IM-F | 功能描述:UART 接口集成電路 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 |
| XR16L580IM-F | 制造商:Exar Corporation 功能描述:IC SGL UART 3MBPS 5.5V 48-TQFP 制造商:Exar Corporation 功能描述:IC, SGL UART, 3MBPS, 5.5V, 48-TQFP |
| XR16L580IMTR-F | 功能描述:UART 接口集成電路 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 |
| XR16L651 | 制造商:EXAR 制造商全稱:EXAR 功能描述:2.25V TO 5.5V UART WITH 32-BYTE FIFO |
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