ST7263BK4 STMicroelectronics, ST7263BK4 Datasheet - Page 94

• Manufacturer Part Number: ST7263BK4
• Description: LOW SPEED USB 8-BIT MCU FAMILY WITH UP TO 32K FLASH/ROM, DFU CAPABILITY, 8-BIT ADC, WDG, TIMER, SCI and I2C
• Manufacturer: STMicroelectronics

Specifications of ST7263BK4

• 4, 8, 16 Or 32 Kbytes Program Memory: high density Flash (HDFlash), FastROM or ROM with Read-Out and Write protection

On-chip peripherals
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Data register (SCIDR)
Reset value: Undefined
This register contains the received or transmitted data character, depending on whether it is
read from or written to.
The Data register performs a double function (read and write) since it is composed of two
registers, one for transmission (TDR) and one for reception (RDR).
The TDR register provides the parallel interface between the internal bus and the output
shift register (see
The RDR register provides the parallel interface between the input shift register and the
internal bus (see
DR7
7
DR6
Figure
Figure
2 RE Receiver enable.
1 RWU Receiver wakeup.
0 SBK Send break.
This bit enables the receiver. It is set and cleared by software.
0: Receiver is disabled
1: Receiver is enabled and begins searching for a start bit
This bit determines if the SCI is in mute mode or not. It is set and cleared by
software and can be cleared by hardware when a wakeup sequence is
recognized.
0: Receiver in Active mode
1: Receiver in Mute mode
Note: Before selecting Mute mode (setting the RWU bit), the SCI must
This bit set is used to send break characters. It is set and cleared by software.
0: No break character is transmitted
1: Break characters are transmitted
Note: If the SBK bit is set to “1” and then to “0”, the transmitter will send a
41).
41).
DR5
receive some data first, otherwise it cannot function in Mute mode with
wakeup by idle line detection.
BREAK word at the end of the current word.
Doc ID 7516 Rev 8
DR4
Read/write
DR3
DR2
DR1
ST7263Bxx
DR0
0