ST72F264G2B6 STMicroelectronics, ST72F264G2B6 Datasheet - Page 103

• Manufacturer Part Number: ST72F264G2B6
• Description: MCU 8-BIT 8K FLASH 32-SDIP
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST72F264G2B6

• Mfg Application Notes: ST7 Checksum Capability, AN1070 App Note
• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-SDIP (0.400", 10.16mm)
• Processor Series: ST72F2x
• Core: ST7
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: I2C, SCI, SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 22
• Number Of Timers: 3
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Development Tools By Supplier: ST7F264-IND/USB, ST72F34X-SK/RAIS, ST7MDT10-DVP3, ST7MDT10-EMU3, STX-RLINK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 6 Channel
• For Use With: 497-6423 - BOARD EVAL BASED ON ST72264G1497-5046 - KIT TOOL FOR ST7/UPSD/STR7 MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: 497-5570

11.6 I
11.6.1 Introduction
The I
tween the microcontroller and the serial I
provides both multimaster and slave functions,
and controls all I
tocol, arbitration and timing. It supports fast I
mode (400kHz).
11.6.2 Main Features
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I
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I
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11.6.3 General Description
In addition to receiving and transmitting data, this
interface converts it from serial to parallel format
Figure 57. I
2
2
C Master Features:
C Slave Features:
Parallel-bus/I
Multi-master capability
7-bit/10-bit Addressing
SMBus V1.1 Compliant
Transmitter/Receiver flag
End-of-byte transmission flag
Transfer problem detection
Clock generation
I
Arbitration Lost Flag
End of byte transmission flag
Transmitter/Receiver Flag
Start bit detection flag
Start and Stop generation
Stop bit detection
I
Detection of misplaced start or stop condition
Programmable I
Transfer problem detection
End-of-byte transmission flag
Transmitter/Receiver flag
2
2
C bus busy flag
C bus busy flag
2
2
C Bus Interface serves as an interface be-
C BUS INTERFACE (I2C)
2
SCL
SDA
C BUS Protocol
2
C protocol converter
CONDITION
2
C bus-specific sequencing, pro-
2
START
C Address detection
MSB
1
2
C bus. It
2
2
C
and vice versa, using either an interrupt or polled
handshake. The interrupts are enabled or disabled
by software. The interface is connected to the I
bus by a data pin (SDAI) and by a clock pin (SCLI).
It can be connected both with a standard I
and a Fast I
ware.
Mode Selection
The interface can operate in the four following
modes:
– Slave transmitter/receiver
– Master transmitter/receiver
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 ca-
pability.
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 recog-
nising its own address (7 or 10-bit), and the Gen-
eral Call address. The General Call address de-
tection may be enabled or disabled by software.
Data and addresses are transferred as 8-bit bytes,
MSB first. The first byte(s) following the start con-
dition contain the address (one in 7-bit mode, two
in 10-bit mode). The address 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
ure
57.
ST72260Gx, ST72262Gx, ST72264Gx
8
2
C bus. This selection is made by soft-
ACK
9
CONDITION
STOP
VR02119B
103/172
2
C bus
Fig-
2
C