參數(shù)資料
型號： SC16C754BIB80,551
廠商： NXP Semiconductors
文件頁數(shù)： 7/50頁
文件大小： 0K
描述： IC UART QUAD 64BYTE 80LQFP
標(biāo)準(zhǔn)包裝： 119
通道數(shù)： 4，QUART
FIFO's： 64 字節(jié)
電源電壓： 2.5V，3.3V，5V
帶自動流量控制功能： 是
帶故障啟動位檢測功能： 是
帶調(diào)制解調(diào)器控制功能： 是
安裝類型： 表面貼裝
封裝/外殼： 80-LQFP
供應(yīng)商設(shè)備封裝： 80-LQFP（12x12）
包裝： 托盤
其它名稱： 935274939551
SC16C754BIB80-S
SC16C754BIB80-S-ND
SC16C754B_4
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 04 — 6 October 2008
15 of 51
NXP Semiconductors
SC16C754B
5 V, 3.3 V and 2.5 V quad UART, 5 Mbit/s (max.) with 64-byte FIFOs
6.5 Interrupts
The SC16C754B has interrupt generation and prioritization (six prioritized levels of
interrupts) capability. The Interrupt Enable Register (IER) enables each of the six types of
interrupts and the INT signal in response to an interrupt generation. The IER can also
disable the interrupt system by clearing bits 7:5 and 3:0. When an interrupt is generated,
the IIR indicates that an interrupt is pending and provides the type of interrupt through
IIR[5:0]. Table 6 summarizes the interrupt control functions.
It is important to note that for the framing error, parity error, and break conditions, LSR[7]
generates the interrupt. LSR[7] is set when there is an error anywhere in the RX FIFO,
and is cleared only when there are no more errors remaining in the FIFO. LSR[4:2] always
represent the error status for the received character at the top of the RX FIFO. Reading
the RX FIFO updates LSR[4:2] to the appropriate status for the new character at the top of
the FIFO. If the RX FIFO is empty, then LSR[4:2] are all zeros.
For the Xoff interrupt, if an Xoff ow character detection caused the interrupt, the interrupt
is cleared by an Xon ow character detection. If a special character detection caused the
interrupt, the interrupt is cleared by a read of the IIR.
Table 6.
Interrupt control functions
IIR[5:0]
Priority
level
Interrupt type
Interrupt source
Interrupt reset method
00 0001
None
none
00 0110
1
receiver line status
OE, FE, PE, or BI errors occur in
characters in the RX FIFO
FE, PE, BI: all erroneous
characters are read from the
RX FIFO.
OE: read LSR
00 1100
2
RX time-out
stale data in RX FIFO
read RHR
00 0100
2
RHR interrupt
DRDY (data ready)
(FIFO disable)
RX FIFO above trigger level
(FIFO enable)
read RHR
00 0010
3
THR interrupt
TFE (THR empty)
(FIFO disable)
TX FIFO passes above trigger level
(FIFO enable)
read IIR or a write to the THR
00 0000
4
modem status
MSR[3:0] = 0
read MSR
01 0000
5
Xoff interrupt
receive Xoff character(s)/special
character
receive Xon character(s)/Read of
IIR
10 0000
6
CTS, RTS
RTS pin or CTS pin change state from
active (LOW) to inactive (HIGH)
read IIR
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SC16C754BIB80-T 功能描述:UART 接口集成電路 16CB 2.5V-5V 4CH UART 64B 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
SC16C754BIBM 功能描述:UART 接口集成電路 16CB 2.5V-5V 4CH UART 64B 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
SC16C754BIBM,128 功能描述:UART 接口集成電路 16CB 2.5V-5V 4CH 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
SC16C754BIBM,151 功能描述:UART 接口集成電路 16CB 2.5V-5V 4CH 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
SC16C754BIBM,157 功能描述:UART 接口集成電路 16CB 2.5V-5V 4CH 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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