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參數(shù)資料
| 型號： | XR16C850CM |
| 廠商： | EXAR CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | UART with 128-byte FIFO’s FIFO Counters and Half-duplex Control |
| 中文描述： | 1 CHANNEL(S), 2.25M bps, SERIAL COMM CONTROLLER, PQFP48 |
| 封裝： | 7 X 7 MM, 1 MM HEIGHT, TQFP-48 |
| 文件頁數(shù)： | 36/55頁 |
| 文件大?。?/td> | 331K |
| 代理商： | XR16C850CM |
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XR16C850
36
Rev. 1.20
ENHANCED MODE SELECT REGISTER (EMSR)
This register is accessible only when FCTR Bit-6 is set
to “1”.
EMSR BIT-0: “Write only”
0 = Receive FIFO count register. The scratch pad
register is used to provide the receive FIFO count when
it is read.
1 = Transmit FIFO count register. The scratch pad
register is used to provide the transmit FIFO count when
it is read.
EMSR BIT-1: “Write only”
0 = Normal.
1 = Alternate receive - transmit FIFO count. When
EMSR Bit-0=1 and EMSR Bit-1=1, scratch pad register
is used to provide the receive - transmit FIFO count
when it is read every alternate read cycle. The TRG Bit-
7 will provide FIFO count mode information, TRG Bit-
7=0 receive mode, TRG Bit-7=1 transmit mode.
EMSR BIT-2: “Write only”
This bit selects and enables the DMA interface function
on the 52-pin device, –DACK, -DRQ and TC become
active. Only TX or RX DMA can be enabled at one time.
0 = Enable RX DMA
1 = Enable TX DMA
EMSR BIT 3-7:
Reserved for future use.
XR16C850 EXTERNAL RESET CONDITIONS
REGISTERS
RESET STATE
IER
ISR
IER BITS 0-7 = logic 0
ISR BIT-0=1, ISR BITS 1-7 = logic
0
BITS 0-7 = logic 0
LSR BITS 0-4 = logic 0,
LSR BITS 5-6 = logic 1 LSR, BIT 7
= logic 0
MSR BITS 0-3 = logic 0,
MSR BITS 4-7 = logic levels of the
input signals
BITS 0-7 = logic 0
BITS 0-7 = logic 0
BITS 0-7 = logic 0
BITS 0-7 = logic 1
LCR, MCR
LSR
MSR
FCR, EFR
FCTR
EMSR
SCPAD
SIGNALS
RESET STATE
TX
-OP1
-OP2
-RTS
-DTR
-RXRDY
Logic 1
Logic 1
Logic 1
Logic 1
Logic 1
Logic 1 (STD mode),/ Three state
(PC mode)
Logic 0 (STD mode) / Three state
(PC mode)
Logic 0 (STD mode) / Three state
(PC mode)
-TXRDY
IRQn/INT
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| XR16C850CQ | UART with 128-byte FIFO’s FIFO Counters and Half-duplex Control |
| XR16C850 | UART with 128-byte FIFO’s FIFO Counters and Half-duplex Control |
| XR16C854 | QUAD UART WITH RX/TX FIFO COUNTERS,128-BYTE FIFO |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XR16C850CM-0A-EVB | 功能描述:UART 接口集成電路 Supports C850 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 |
| XR16C850CM-F | 功能描述:UART 接口集成電路 UARTW/128BYTE 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 |
| XR16C850CMTR-F | 功能描述:UART 接口集成電路 UART w/128 Bytes FIFO & IrDA 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 |
| XR16C850CP | 制造商:EXAR 制造商全稱:EXAR 功能描述:UART with 128-byte FIFO’s FIFO Counters and Half-duplex Control |
| XR16C850CQ | 制造商:EXAR 制造商全稱:EXAR 功能描述:UART with 128-byte FIFO’s FIFO Counters and Half-duplex Control |
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