ST7260E1 STMicroelectronics, ST7260E1 Datasheet - Page 72

• Manufacturer Part Number: ST7260E1
• Description: LOW SPEED USB 8-BIT MCU FAMILY WITH UP TO 8K FLASH/ROM AND SERIAL COMMUNICATION INTERFACE (SCI)
• Manufacturer: STMicroelectronics

Specifications of ST7260E1

• 4 Or 8 Kbytes Program Memory: high density Flash (HDFlash), or FastROM with readout and write protection

Serial communications interface (SCI)
13.2.1
72/139
General description
The interface is externally connected to another device by two pins (see
●
●
Through these pins, serial data is transmitted and received as frames comprising:
●
●
●
●
This interface uses two types of baud rate generator:
●
TDO: Transmit Data Output. When the transmitter and the receiver are disabled, the
output pin returns to its I/O port configuration. When the transmitter and/or the receiver
are enabled and nothing is to be transmitted, the TDO pin is at high level.
RDI: Receive Data Input is the serial data input. Oversampling techniques are used for
data recovery by discriminating between valid incoming data and noise.
An Idle Line prior to transmission or reception
A start bit
A data word (8 or 9 bits) least significant bit first
A Stop bit indicating that the frame is complete.
A conventional type for commonly-used baud rates.
Figure
39):
ST7260xx