ST72325S6 STMicroelectronics, ST72325S6 Datasheet - Page 122
![no-image](/images/manufacturer_photos/0/6/637/stmicroelectronics_sml.jpg)
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
- Current page: 122 of 197
- Download datasheet (4Mb)
ST72325xx
I
How to release the SDA / SCL lines
Set and subsequently clear the STOP bit while
BTF is set. The SDA/SCL lines are released after
the transfer of the current byte.
SMBus Compatibility
ST7 I
supports all SMBus adressing modes, SMBus bus
protocols and CRC-8 packet error checking. Refer
to AN1713: SMBus Slave Driver For ST7 I
ripheral.
10.7.4.2 Master Mode
To switch from default Slave mode to Master
mode a Start condition generation is needed.
Start condition
Setting the START bit while the BUSY bit is
cleared causes the interface to switch to Master
mode (M/SL bit set) and generates a Start condi-
tion.
Once the Start condition is sent:
– The EVF and SB bits are set by hardware with
Then the master waits for a read of the SR1 regis-
ter followed by a write in the DR register with the
Slave address, holding the SCL line low (see
Figure 69
Slave address transmission
Then the slave address is sent to the SDA line via
the internal shift register.
In 7-bit addressing mode, one address byte is
sent.
In 10-bit addressing mode, sending the first byte
including the header sequence causes the follow-
ing event:
– The EVF bit is set by hardware with interrupt
Then the master waits for a read of the SR1 regis-
ter followed by a write in the DR register, holding
the SCL line low (see
quencing EV9).
122/197
2
C INTERFACE (Cont’d)
an interrupt if the ITE bit is set.
generation if the ITE bit is set.
2
C is compatible with SMBus V1.1 protocol. It
Transfer sequencing EV5).
Figure 69
Transfer se-
2
C Pe-
Then the second address byte is sent by the inter-
face.
After completion of this transfer (and acknowledge
from the slave if the ACK bit is set):
– The EVF bit is set by hardware with interrupt
Then the master waits for a read of the SR1 regis-
ter followed by a write in the CR register (for exam-
ple set PE bit), holding the SCL line low (see
ure 69
Next the master must enter Receiver or Transmit-
ter mode.
Note: In 10-bit addressing mode, to switch the
master to Receiver mode, software must generate
a repeated Start condition and resend the header
sequence with the least significant bit set
(11110xx1).
Master Receiver
Following the address transmission and after SR1
and CR registers have been accessed, the master
receives bytes from the SDA line into the DR reg-
ister via the internal shift register. After each byte
the interface generates in sequence:
– Acknowledge pulse if the ACK bit is set
– EVF and BTF bits are set by hardware with an in-
Then the interface waits for a read of the SR1 reg-
ister followed by a read of the DR register, holding
the SCL line low (see
quencing EV7).
To close the communication: before reading the
last byte from the DR register, set the STOP bit to
generate the Stop condition. The interface goes
automatically back to slave mode (M/SL bit
cleared).
Note: In order to generate the non-acknowledge
pulse after the last received data byte, the ACK bit
must be cleared just before reading the second
last data byte.
generation if the ITE bit is set.
terrupt if the ITE bit is set.
Transfer sequencing EV6).
Figure 69
Transfer se-
Fig-
Related parts for ST72325S6
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![HCF4040BF](/images/manufacturer_photos/0/6/637/stmicroelectronics_tmb.jpg)
Part Number:
Description:
STMicroelectronics [RIPPLE-CARRY BINARY COUNTER/DIVIDERS]
Manufacturer:
STMicroelectronics
Datasheet:
![HCF4054BF](/images/manufacturer_photos/0/6/637/stmicroelectronics_tmb.jpg)
Part Number:
Description:
STMicroelectronics [LIQUID-CRYSTAL DISPLAY DRIVERS]
Manufacturer:
STMicroelectronics
Datasheet:
![STEVAL-MKI062V2](/photos/28/39/283999/steval-mki062v2_tmb.jpg)
Part Number:
Description:
BOARD EVAL FOR MEMS SENSORS
Manufacturer:
STMicroelectronics
Datasheet:
![BUT32V](/images/manufacturer_photos/0/6/637/stmicroelectronics_tmb.jpg)
Part Number:
Description:
NPN TRANSISTOR POWER MODULE
Manufacturer:
STMicroelectronics
Datasheet:
![STTA12006TV2](/images/manufacturer_photos/0/6/637/stmicroelectronics_tmb.jpg)
Part Number:
Description:
TURBOSWITCH ULTRA-FAST HIGH VOLTAGE DIODE
Manufacturer:
STMicroelectronics
Datasheet:
![E110NS20FD](/images/manufacturer_photos/0/6/637/stmicroelectronics_tmb.jpg)
Part Number:
Description:
Manufacturer:
STMicroelectronics
Datasheet:
![MDS50-800](/images/manufacturer_photos/0/6/637/stmicroelectronics_tmb.jpg)
Part Number:
Description:
DIODE / SCR MODULE
Manufacturer:
STMicroelectronics
Datasheet:
![MDS35-800](/images/manufacturer_photos/0/6/637/stmicroelectronics_tmb.jpg)
Part Number:
Description:
DIODE / SCR MODULE
Manufacturer:
STMicroelectronics
Datasheet:
![E16N100](/images/manufacturer_photos/0/6/637/stmicroelectronics_tmb.jpg)
Part Number:
Description:
Search -----> STE16N100
Manufacturer:
STMicroelectronics
Datasheet:
![E53NA50](/images/manufacturer_photos/0/6/637/stmicroelectronics_tmb.jpg)
Part Number:
Description:
Search ---> STE53NA50
Manufacturer:
STMicroelectronics
Datasheet:
![BUV98AF](/images/manufacturer_photos/0/6/637/stmicroelectronics_tmb.jpg)
Part Number:
Description:
NPN Transistor Power Module
Manufacturer:
STMicroelectronics
Datasheet:
![MDS80-1200](/images/manufacturer_photos/0/6/637/stmicroelectronics_tmb.jpg)
Part Number:
Description:
DIODE / SCR MODULE
Manufacturer:
STMicroelectronics
Datasheet: