ST72F344K4T6 STMicroelectronics, ST72F344K4T6 Datasheet - Page 29

• Manufacturer Part Number: ST72F344K4T6
• Description: MCU 8BIT 16KB FLASH MEM 32-LQFP
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST72F344K4T6

• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, LIN, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 24
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-LQFP
• Processor Series: ST72F3x
• Core: ST7
• Data Bus Width: 8 bit
• Data Ram Size: 1 KB
• Interface Type: I2C, SCI, SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 34
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: ST72F34X-SK/RAIS, ST7MDT40-EMU3, STX-RLINK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• For Use With: 497-5046 - KIT TOOL FOR ST7/UPSD/STR7 MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-5611

ST72344xx ST72345xx
Caution:
4.5
4.5.1
3
4
5
isolate the application reset circuit in this case. When using a classical RC network with
R>1K or a reset management IC with open drain output and pull-up resistor>1K, no
additional components are needed. In all cases the user must ensure that no external reset
is generated by the application during the ICC session.
The use of Pin 7 of the ICC connector depends on the Programming Tool architecture. This
pin must be connected when using most ST Programming Tools (it is used to monitor the
application power supply). Please refer to the Programming Tool manual.
Pin 9 has to be connected to the OSC1 pin of the ST7 when the clock is not available in the
application or if the selected clock option is not programmed in the option byte. ST7 devices
with multi-oscillator capability need to have OSC2 grounded in this case.
In “enabled option byte” mode (38-pulse ICC mode), the internal RC oscillator is forced as a
clock source, regardless of the selection in the option byte.
During normal operation the ICCCLK pin must be internally or externally pulled- up (external
pull-up of 10 kΩ mandatory in noisy environment) to avoid entering ICC mode unexpectedly
during a reset. In the application, even if the pin is configured as output, any reset will put it
back in input pull-up.
Figure 6.
Memory protection
There are two different types of memory protection: Read Out Protection and Write/Erase
Protection which can be applied individually.
Readout protection
Readout protection, when selected provides a protection against program memory content
extraction and against write access to Flash memory. Even if no protection can be
considered as totally unbreakable, the feature provides a very high level of protection for a
general purpose microcontroller. Both program and data E
POWER SUPPLY
APPLICATION
Typical ICC interface
(See Note 3)
C
L2
Doc ID 12321 Rev 5
OPTIONAL
(See Note 4)
C
ST7
L1
HE10 CONNECTOR TYPE
10kΩ
ICC CONNECTOR
10
9
PROGRAMMING TOOL
ICC CONNECTOR
7
8
5
6
4
3
ICC Cable
1
2
2
memory are protected.
See Note 1
APPLICATION BOARD
Flash program memory
APPLICATION
RESET SOURCE
See Note 2
APPLICATION
I/O
29/247