TMP86C993XB Toshiba, TMP86C993XB Datasheet - Page 149
TMP86C993XB
Manufacturer Part Number
TMP86C993XB
Description
EMULATION CHIP FOR TMP86F SSOP
Manufacturer
Toshiba
Datasheet
1.TMP86C993XB.pdf
(246 pages)
Specifications of TMP86C993XB
Accessory Type
Adapter
For Use With/related Products
TMP86F SSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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13.9.4
13.9.5
UART2SR<RBFL> is cleared to “0” when the RD2BUF is read after reading the UART2SR.
shift register and data transmit starts, transmit data buffer empty flag UART2SR<TBEP> is set to “1”. The
UART2SR<TBEP> is cleared to “0” when the TD2BUF is written after reading the UART2SR.
RXD2 pin
RD2BUF
UART2SR<RBFL>
INTRXD2 interrupt
Shift register
Loading the received data in RD2BUF sets receive data buffer full flag UART2SR<RBFL> to "1". The
When no data is in the transmit buffer TD2BUF, that is, when data in TD2BUF are transferred to the transmit
Receive Data Buffer Full
Transmit Data Buffer Empty
UART2SR<RBFL>
RXD2 pin
RD2BUF
UART2SR<OERR>
INTRXD2 interrupt
Shift register
Note:Receive operations are disabled until the overrun error flag UART2SR<OERR> is cleared.
Note:If the overrun error flag UART2SR<OERR> is set during the period between reading the UART2SR and
reading the RD2BUF, it cannot be cleared by only reading the RD2BUF. Therefore, after reading the
RD2BUF, read the UART2SR again to check whether or not the overrun error flag which should have
been cleared still remains set.
Figure 13-8 Generation of Receive Data Buffer Full
Figure 13-7 Generation of Overrun Error
xxx0 **
yyyy
xxx0 **
yyyy
Final bit
Final bit
Page 135
xxxx0
xxxx0
*
*
Stop
Stop
1xxxx0
xxxx
1xxxx0
After reading UART2SR then
RD2BUF clears RBFL.
After reading UART2SR then
RD2BUF clears OERR.
TMP86FH92DMG
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