UPD784026 Renesas Electronics Corporation., UPD784026 Datasheet - Page 452
![no-image](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__sml.jpg)
UPD784026
Manufacturer Part Number
UPD784026
Description
16/8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD784026.pdf
(759 pages)
- Current page: 452 of 759
- Download datasheet (3Mb)
16.2.5 Transmission
asynchronous serial interface mode register (ASIM) is set (1). A transmit operation is started by writing transmit data to
the transmit shift register (TXS) when transmission is enabled. The start bit, parity bit and stop bit(s) are added automatically.
is generated when the TXS is empty.
412
The PD784026’s asynchronous serial interface is set to the transmission enabled state when the TXE bit of the
When a transmit operation is started, the data in the TXS is shifted out, and a transmission completion interrupt (INTST)
If no more data is written to the TXS, the transmit operation is discontinued.
If the TXE bit is cleared (0) during a transmit operation, the transmit operation is discontinued immediately.
Cautions 1. After RESET input the transmit shift register (TXS) is emptied but a transmission completion
(a) Stop bit length: 1
(b) Stop bit length: 2
TxD (Output)
TxD (Output)
Figure 16-6 Asynchronous Serial Interface Transmission Completion Interrupt Timing
2. An asynchronous serial interface mode register (ASIM) rewrite should not be performed during
INTST
INTST
interrupt is not generated. A transmit operation can be started by writing transmit data to the TXS.
a transmit operation. If an ASIM rewrite is performed during a transmit operation, subsequent
transmit operations may not be possible (normal operation is restored by RESET input).
Software can determine whether transmission is in progress by using a transmission completion
interrupt (INTST) or the interrupt request flag (STIF) set by INTST.
CHAPTER 16 ASYNCHRONOUS SERIAL INTERFACE/3-WIRE SERIAL I/O
START
START
D0
D0
D1
D1
D2
D2
D6
D6
D7
D7
Parity
Parity
STOP
STOP
Related parts for UPD784026
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![HD6417709S](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Renesas Technology Corp [Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series]
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![M30291FCTHP](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
RENESAS MCU M16C FAMILY / M16C/Tiny SERIES
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![R0K505210S000BE](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Renesas Starter Kit for RX210
Manufacturer:
Renesas Electronics Corporation.
![R0K505630S000BE](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
EVALBOARD/Renesas StarterKit for RX630
Manufacturer:
Renesas Electronics Corporation.
![R0K50563NS000BE](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
EVALBOARD/Renesas Starter Kit+ for RX63N
Manufacturer:
Renesas Electronics Corporation.
![R0K507269S000BE](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
EVALBOARD/Renesas Starter Kit
Manufacturer:
Renesas Electronics Corporation.
![Y-PG-FP5-EE](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
FLASH PROGRAMMER FOR RENESAS MICROCONTROLLERS
Manufacturer:
Renesas Electronics Corporation.
![HA1127](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![HA17747](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![UPD3799CY](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![UPD3719D](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![UPD3778CY](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![UPD3777CY](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![UPD3798CY](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![UPD3728DZ](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet: