ST72344S4 STMicroelectronics, ST72344S4 Datasheet - Page 175

• Manufacturer Part Number: ST72344S4
• Description: 8-bit MCU
• Manufacturer: STMicroelectronics

Specifications of ST72344S4

• Up To 16 Kbytes Program Memory: single voltage extended Flash (XFlash) with readout and write protection, in-circuit and inapplication programming (ICP and IAP). 10K write/erase cycles guaranteed, data retention
• 256 Bytes Data Eeprom With Readout Protection. 300k Write/erase Cycles Guaranteed, Data Retention: 20 years at 55 °C.
• Clock Sources: crystal/ceramic resonator oscillators, high-accuracy internal RC oscillator or external clock
• 5 Power-saving Modes: Slow, Wait, Halt, Auto-wakeup from Halt and Active-halt
• 16-bit Timer A With: 1 input capture, 1 output compares, external clock input, PWM and pulse generator modes
• 16-bit Timer B With: 2 input captures, 2 output compares, PWM and pulse generator modes

ST72344xx ST72345xx
Note:
Figure 75. Transfer sequencing
Legend: S = Start, P = Stop, A = Acknowledge, NA = Non-acknowledge,
WF = WF event, WFx bit is set (with interrupt if ITWEx=1, after Stop or Restart conditions),
cleared by reading the I2C3SSR register while no communication is ongoing.
RF = RF event, RFx is set (with interrupt if ITREx=1, after Stop or Restart conditions),
cleared by reading the I2C3SSR register while no communication is ongoing.
BusyW = BusyW flag in the I2C3CR2 register set, cleared by software writing 0.
The I2C3S supports a repeated start (S
Figure 76. Byte write
Figure 77. Page write
Figure 78. Current address read
Figure 79. Random read (dummy write + restart + current address read)
Start
Start
Start
7-bit Slave receiver:
7-bit Slave transmitter:
S Address A
S Address A
Start
SA
SA
SA
W
W
Ack
WF
RF
Ack
SA
W
BA
Data1
Doc ID 12321 Rev 5
Data1
BA
Ack
Ack Start
A
R
A
r
) in place of a stop condition (P).
Ack
Data2
Data2
BA
Ack
SA
Data
A
A
Ack
Data
.....
.....
R Ack
Ack
DataN NA P
DataN A P
Data
Nack
Data
Data
Stop
Nack
On-chip peripherals
Ack
BusyW
Ack
Stop
Stop
Stop
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