ST72325S6 STMicroelectronics, ST72325S6 Datasheet - Page 103
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ST72325S6
Manufacturer Part Number
ST72325S6
Description
8-bit MCU
Manufacturer
STMicroelectronics
Datasheet
1.ST72325K4.pdf
(197 pages)
Specifications of ST72325S6
Hdflash Endurance
100 cycles, data retention
Clock Sources
crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
Four Power Saving Modes
Halt, Active-Halt,Wait and Slow
Main Clock Controller With
Real time base, Beep and Clock-out capabilities
Two 16-bit Timers With
2 input captures, 2 output compares, external clock input on one timer, PWM and pulse generator modes
8-bit Pwm Auto-reload Timer With
2 input captures, 4 PWM outputs, output compare and time base interrupt, external clock with event detector
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10.6 SERIAL COMMUNICATIONS INTERFACE (SCI)
10.6.1 Introduction
The Serial Communications Interface (SCI) offers
a flexible means of full-duplex data exchange with
external equipment requiring an industry standard
NRZ asynchronous serial data format. The SCI of-
fers a very wide range of baud rates using two
baud rate generator systems.
10.6.2 Main Features
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– Address bit (MSB)
– Idle line
– Overrun error
– Noise error
– Frame error
– Parity error
– Transmit data register empty
– Transmission complete
– Receive data register full
– Idle line received
– Overrun error detected
– Transmits parity bit
– Checks parity of received data byte
Full duplex, asynchronous communications
NRZ standard format (Mark/Space)
Dual baud rate generator systems
Independently programmable transmit and
receive baud rates up to 500K baud
Programmable data word length (8 or 9 bits)
Receive buffer full, Transmit buffer empty and
End of Transmission flags
Two receiver wake-up modes:
Muting function for multiprocessor configurations
Separate enable bits for Transmitter and
Receiver
Four error detection flags:
Five interrupt sources with flags:
Parity control:
Reduced power consumption mode
10.6.3 General Description
The interface is externally connected to another
device by two pins (see
– TDO: Transmit Data Output. When the transmit-
– RDI: Receive Data Input is the serial data input.
Through these pins, serial data is transmitted and
received as frames comprising:
– 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
This interface uses two types of baud rate generator:
– A conventional type for commonly-used baud
– An extended type with a prescaler offering a very
ter 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.
Oversampling techniques are used for data re-
covery by discriminating between valid incoming
data and noise.
rates
wide range of baud rates even with non-standard
oscillator frequencies
Figure
2.):
ST72325xx
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