参数资料
| 型号： | ST16C2552IJ44TR-F |
| 厂商： | Exar Corporation |
| 文件页数： | 29/34页 |
| 文件大小： | 0K |
| 描述： | IC UART FIFO 16B DUAL 44PLCC |
| 标准包装： | 500 |
| 特点： | * |
| 通道数： | 2，DUART |
| FIFO's： | 16 字节 |
| 规程： | RS232，RS485 |
| 电源电压： | 3.3 V ~ 5 V |
| 带故障启动位检测功能： | 是 |
| 带调制解调器控制功能： | 是 |
| 带CMOS： | 是 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-LCC（J 形引线） |
| 供应商设备封装： | 44-PLCC（16.59x16.59） |
| 包装： | 带卷 (TR) |
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ST16C2552
4
2.97V TO 5.5V DUAL UART WITH 16-BYTE FIFO
REV. 4.2.2
MFA#
35
O
Multi-Function Output Channel A. This output pin can function as the OP2A#, BAUD-
OUTA#, or RXRDYA# pin. One of these output signal functions can be selected by
the user programmable bits 1-2 of the Alternate Function Register (AFR). These sig-
nal functions are described as follows:
1) OP2A# - When OP2A# (active low) is selected, the MF# pin is a logic 0 when MCR
bit-3 is set to a logic 1 (see MCR bit-3). MCR bit-3 defaults to a logic 1 condition after
a reset or power-up.
2) BAUDOUTA# - When BAUDOUTA# function is selected, the 16X Baud rate clock
output is available at this pin.
3) RXRDYA# - RXRDYA# (active low) is intended for monitoring DMA data transfers.
See Table 2 for more details.
If it is not used, leave it unconnected.
MFB#
19
O
Multi-Function Output ChannelB. This output pin can function as the OP2B#, BAUD-
OUTB#, or RXRDYB# pin. One of these output signal functions can be selected by
the user programmable bits 1-2 of the Alternate Function Register (AFR). These sig-
nal functions are described as follows:
1) OP2B# - When OP2B# (active low) is selected, the MF# pin is a logic 0 when MCR
bit-3 is set to a logic 1 (see MCR bit-3). MCR bit-3 defaults to a logic 1 condition after
a reset or power-up.
2) BAUDOUTB# - When BAUDOUTB# function is selected, the 16X Baud rate clock
output is available at this pin.
3) RXRDYB# - RXRDYB# (active low) is intended for monitoring DMA data transfers.
See Table 2 for more details.
If it is not used, leave it unconnected.
TXA
38
O
UART channel A Transmit Data. If it is not used, leave it unconnected.
RXA
39
I
UART channel A Receive Data. Normal receive data input must idle at logic 1 condi-
tion. If it is not used, tie it to VCC or pull it high via a 100k ohm resistor.
RTSA#
36
O
UART channel A Request-to-Send (active low) or general purpose output. If it is not
used, leave it unconnected.
CTSA#
40
I
UART channel A Clear-to-Send (active low) or general purpose input. This input
should be connected to VCC when not used. This input has no effect on the UART.
DTRA#
37
O
UART channel A Data-Terminal-Ready (active low) or general purpose output. If it is
not used, leave it unconnected.
DSRA#
41
I
UART channel A Data-Set-Ready (active low) or general purpose input. This input
should be connected to VCC when not used. This input has no effect on the UART.
CDA#
42
I
UART channel A Carrier-Detect (active low) or general purpose input. This input
should be connected to VCC when not used. This input has no effect on the UART.
Pin Description
NAME
44-PLCC
PIN #
TYPE
DESCRIPTION
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