参数资料
型号: SM8521
厂商: Sharp Corporation
元件分类: DC/DC变换器
英文描述: 1 watt dc-dc converters
中文描述: 1瓦的DC - DC转换器
文件页数: 47/56页
文件大小: 267K
代理商: SM8521
SM8521
- 47 -
UNIVERSAL ASYNCHRONOUS RECEIVER
AND TRANSMITTER (UART) INTERFACE
SM8521 supports 1-channel universal asynchronous
receiver and transmitter interface (UART) .
The UART interrupt has the following features.
Transmitter and receiver are independent each
other, full duplex communication possible.
Receiver is consisted of duplex buffer, able to
receive data continuously.
The dedicated register for baud rate generator is
built-in.
It is possible to choose transfer format as
following.
Stop bit : 1-bit/2-bit
Parity bit : even parity/odd parity/no parity
Receive error can be detected.
Frame error
Parity error
Overrun error
NOTE :
UART baud rate is fixed at [Timer 0 output/32]. Regarding
Timer 0, refer to "8-Bit Timer Register TM0C".
Data bus
Receiver data
register URTR
Transmit data
register URTT
T
Control register
URTC
: A control register mapped by register file
Receive data
shift register
R
P
Status register
URTS
Interrupt request signal
to bit IR03 (bit 3 : IR0)
P
Divider
Timer 0 output
(Divided by 16)
T
X
D
P7
0
/R
X
D
Fig. 25 UART Block Diagram
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