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| 型號(hào)： | SC28L92A1B-S |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 2 CHANNEL(S), 1M bps, SERIAL COMM CONTROLLER, PQFP44 |
| 封裝： | 10 X 10 MM, 1.75 MM HEIGHT, PLASTIC, SOT-307-2, QFP-44 |
| 文件頁(yè)數(shù)： | 5/73頁(yè) |
| 文件大?。?/td> | 336K |
| 代理商： | SC28L92A1B-S |
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SC28L92_7
NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 07 — 19 December 2007
13 of 73
NXP Semiconductors
SC28L92
3.3 V/5.0 V Dual Universal Asynchronous Receiver/Transmitter
[1]
HVQFN48 package die supply ground is connected to both GND pin and exposed center pad. GND pin must be connected to supply
ground for proper device operation. For enhanced thermal, electrical, and board level performance, the exposed pad needs to be
soldered to the board using a corresponding thermal pad on the board and for proper heat conduction through the board, thermal vias
need to be incorporated in the PCB in the thermal pad region.
6.
6.1 Block diagram
The SC28L92 DUART consists of the following eight major sections: data bus buffer,
operation control, interrupt control, timing, communications channels A and B, input port
and output port. Refer to Section 4 “Block diagram”.
6.1.1 Data bus buffer
The data bus buffer provides the interface between the external and internal data buses. It
is controlled by the operation control block to allow read and write operations to take place
between the controlling CPU and the DUART.
6.1.2 Operation control
The operation control logic receives operation commands from the CPU and generates
appropriate signals to internal sections to control device operation. It contains address
decoding and read and write circuits to permit communications with the microprocessor
via the data bus.
6.1.3 Interrupt control
A single active LOW interrupt output (INTRN) is provided which is activated upon the
occurrence of any of eight internal events. Associated with the interrupt system are the
Interrupt Mask Register (IMR) and the Interrupt Status Register (ISR). The IMR can be
programmed to select only certain conditions to cause INTRN to be asserted. The ISR
can be read by the CPU to determine all currently active interrupting conditions. Outputs
OP3 to OP7 can be programmed to provide discrete interrupt outputs for the transmitter,
IP3
3
41
45
I
Input 3: General purpose input or channel A transmitter external clock
input (TxCA). When the external clock is used by the transmitter, the
transmitted data is clocked on the falling edge of the clock.
IP4
43
37
41
I
Input 4: General purpose input or channel A receiver external clock
input (RxCA). When the external clock is used by the receiver, the
received data is sampled on the rising edge of the clock.
IP5
42
36
40
I
Input 5: General purpose input or channel B transmitter external clock
input (TxCB). When the external clock is used by the transmitter, the
transmitted data is clocked on the falling edge of the clock.
VCC
44
38, 39
42
Pwr
Power Supply: 3.3 V
± 10 % or 5 V ± 10 % supply input.
GND
22
16, 17
Pwr
Ground
n.c.
1, 23, 34
23
6, 13, 24,
25, 36, 37,
43
-
Not connected
Table 3.
Pin description for 68xxx bus interface (Motorola) …continued
Symbol
Pin
Type
Description
PLCC44
QFP44
HVQFN48
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| SC28L92A1BS,528 | 功能描述:UART 接口集成電路 3V-5V 1CH 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 |
| SC28L92A1BS,551 | 功能描述:UART 接口集成電路 3V-5V 1CH 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 |
| SC28L92A1BS,557 | 功能描述:UART 接口集成電路 3V-5V 1CH 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 |
| SC28L92A1BS-F | 功能描述:UART 接口集成電路 3V-5V 1CH UART INTEL/MOT INTRF 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 |
| SC28L92A1BS-S | 功能描述:UART 接口集成電路 3V-5V 1CH UART INTEL/MOT INTRF 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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