ST72344S4 STMicroelectronics, ST72344S4 Datasheet - Page 224

• 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

Electrical characteristics
13.11
13.11.1
Note:
224/247
Communication interface characteristics
I
Subject to general operating conditions for V
Refer to I/O port characteristics for more details on the input/output alternate function
characteristics (SDAI and SCLI). The ST7 I
and timing requirements of the Standard I
T
Table 110. I
1. The I
2. Not tested in production within the whole operating range. Guaranteed by design/validation test results.
The following table gives the values to be written in the I2CCCR register to obtain the
required I
Table 111. SCL frequency table (multimaster I
1. R
For speeds around 200 kHz, achieved speed can have
ranges, achieved speed can have
The above variations depend on the accuracy of the external components used.
2
f
A
400
300
200
100
f
Symbol
SCL
SCL3SNS
50
20
C and I²C3SNS interfaces
= -40°C to 85°C, unless otherwise specified.
f
SCL
P
= External pull-up resistance, f
R
2
C and I2C3SNS interfaces will not function below the minimum clock speed of 4 MHz.
P
=3.3kΩ R
2
84h
11h
25h
60h
NA
NA
C SCL line frequency.
I²C SCL frequency
I²C3SNS SCL frequency
V
DD
2
C and I²C3SNS interfaces characteristics
= 3.3 V
P
Parameter
=4.7kΩ R
84h
10h
24h
5Fh
NA
NA
f
CPU
= 4 MHz.
P
SCL
Doc ID 12321 Rev 5
=3.3kΩ R
84h
11h
25h
60h
NA
NA
V
= I
(2)
±
DD
2
2% tolerance.
C speed, NA = Not achievable.
= 5 V
f
V
CPU
DD
P
=4.7kΩ R
2
84h
11h
26h
62h
I2CCCR value
NA
NA
= 2.7 V to 5.5 V
=4 MHz to 8 MHz
C communication protocol.
2
C and I2C3SNS interfaces meet the electrical
DD
Conditions
, f
OSC
2
P
C interface)
=3.3kΩ R
8Ah
4Bh
FFh
84h
86h
25h
, and T
V
±
DD
5% tolerance, for other speed
= 3.3 V
(1)
A
unless otherwise specified.
,
P
=4.7kΩ R
8Ah
4Ch
FFh
84h
86h
24h
(1)
f
CPU
ST72344xx ST72345xx
= 8 MHz.
Min
P
=3.3kΩ R
8Bh
FFh
84h
85h
28h
53h
V
DD
Max
400
400
= 5 V
P
=4.7kΩ
8Ch
FFh
84h
87h
28h
54h
Unit
kHz
kHz