參數(shù)資料
型號： MB90F897SPMT
元件分類： 微控制器/微處理器
英文描述： MICROCONTROLLER, PQFP48
封裝： 7 X 7 MM, 1.70 MM HEIGHT, 0.50 MM PITCH, PLASTIC, LQFP-48
文件頁數(shù)： 43/84頁
文件大?。?/td> 1773K
代理商： MB90F897SPMT
MB90895 Series
48
DS07-13731-4E
11. UART0/UART1 Outline
UART0/UART1 are general-purpose serial data communication interface for synchronous and asynchronous
communication using external devices.
Provided with bi-directional communication function for both clock-synchronous and clock-asynchronous
modes.
Provided with master/slave communication function (multi-processor mode). (Only master side is available.)
Interrupt request is generated upon completion of reception, completion of transmission and detection of
reception error.
Ready for expanded intelligent service, EI2OS.
UART functions
Note : Start/stop bit is not added upon clock-synchronous transmission. Data only is transmitted.
UART0/UART1 operation modes
: Disallowed
*1 : “+1” is an address/data selection bit used for communication control (bit 11 of SCR1 register: A/D).
*2 : Only 1 bit is detected as a stop bit on data reception.
Description
Data buffer
Full-duplex double buffer
Transmission mode
Clock synchronous (No start/stop bit, no parity bit)
Clock asynchronous (start-stop synchronous)
Baud rate
Built-in special-purpose baud-rate generator. Setting is selectable
among 8 values.
Input of external values is allowed.
Use of clock from external timer (16-bit reload timer 0) is allowed.
Data length
7 bits (only asynchronous normal mode)
8 bits
Signaling system
Non Return to Zero (NRZ) system
Reception error detection
Framing error
Overrun error
Parity error (not detectable in operation mode 1 (multi-processor
mode))
Interrupt request
Receive interrupt (reception completed, reception error detected)
Transmission interrupt (transmission completed)
Ready for expanded intelligent I/O service (EI2OS) in both transmis-
sion and reception
Master/slave communication function
(asynchronous, multi-processor mode)
Communication between 1 (master) and n (slaves) are available
(usable as master only).
Operation mode
Data length
Synchronization
Stop bit length
With parity
Without parity
0
Asynchronous mode
(normal mode)
7-bit or 8-bit
Asynchronous
1- bit or 2-bit *2
1
Multi processor mode
8+1*1
Asynchronous
2
Synchronous mode
8
Synchronous
No
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