ST72F63BE1M1 STMicroelectronics, ST72F63BE1M1 Datasheet - Page 110

• Manufacturer Part Number: ST72F63BE1M1
• Description: IC MCU 8BIT 4K FLASH 24-SOIC
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST72F63BE1M1

• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, SCI, USB
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 14
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 24-SOIC (7.5mm Width)
• Data Converters: A/D 12x8b
• Processor Series: ST72F6x
• Core: ST7
• Data Bus Width: 8 bit
• Data Ram Size: 384 B
• Interface Type: I2C, SCI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 14
• Number Of Timers: 1
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: ST7MDTU3-EPB/US, ST7MDTULS-EVAL, ST72F63B-SK/RAIS, ST7MDTU3-EMU3, STX-RLINK
• Minimum Operating Temperature: 0 C
• For Use With: 497-5521 - EVAL BOARD LOW SPEED USB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

On-chip peripherals
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Mode selection
The interface can operate in the four following modes:
●
●
By default, it operates in slave mode.
The interface automatically switches from slave to master after it generates a START
condition and from master to slave in case of arbitration loss or a STOP generation, allowing
then Multi-Master capability.
Communication flow
In Master mode, it initiates a data transfer and generates the clock signal. A serial data
transfer always begins with a start condition and ends with a stop condition. Both start and
stop conditions are generated in master mode by software.
In Slave mode, the interface is capable of recognizing its own address (7-bit), and the
General Call address. The General Call address detection may be enabled or disabled by
software.
Data and addresses are transferred as 8-bit bytes, MSB first. The first byte following the
start condition is the address byte; it is always transmitted in Master mode.
A 9th clock pulse follows the 8 clock cycles of a byte transfer, during which the receiver must
send an acknowledge bit to the transmitter. Refer to
Figure 46. I²C bus protocol
Acknowledge may be enabled and disabled by software.
The I²C interface address and/or general call address can be selected by software.
The speed of the I²C interface may be selected between Standard (up to 100 kHz) and Fast
I²C (up to 400 kHz).
SDA/SCL line control
Transmitter mode: the interface holds the clock line low before transmission to wait for the
microcontroller to write the byte in the Data register.
Receiver mode: the interface holds the clock line low after reception to wait for the
microcontroller to read the byte in the Data register.
The SCL frequency (F
the I²C bus mode.
When the I²C cell is enabled, the SDA and SCL ports must be configured as floating inputs.
In this case, the value of the external pull-up resistor used depends on the application.
Slave transmitter/receiver
Master transmitter/receiver
SCL
SDA
CONDITION
START
SCL
MSB
) is controlled by a programmable clock divider which depends on
1
Doc ID 7516 Rev 8
2
8
Figure
ACK
9
46.
CONDITION
STOP
VR02119B
ST7263Bxx