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ST72344S2 Datasheet(PDF) 15 Page - STMicroelectronics

Part # ST72344S2
Description  SCI asynchronous serial interface
PDF  247 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72344S2 Datasheet(HTML) 15 Page - STMicroelectronics

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ST72344xx, ST2345xx
Description
Doc ID 12321 Rev 6
15/247
1
Description
The ST7234x devices are members of the ST7 microcontroller family. Table 2 gives the
available part numbers and details on the devices. All devices are based on a common
industry-standard 8-bit core, featuring an enhanced instruction set.
They feature single-voltage Flash memory with byte-by-byte in-circuit programming (ICP)
and in-application programming (IAP) capabilities.
Under software control, all devices can be placed in Wait, Slow, Auto-wakeup from Halt,
Active-halt or Halt mode, reducing the power consumption when the application is in idle or
stand-by state.
The enhanced instruction set and addressing modes of the ST7 offer both power and
flexibility to software developers, enabling the design of highly efficient and compact
application code. In addition to standard 8-bit data management, all ST7 microcontrollers
feature true bit manipulation, 8x8 unsigned multiplication and indirect addressing modes.
The devices feature an on-chip debug module (DM) to support in-circuit debugging (ICD).
For a description of the DM registers, refer to the ST7 ICC Protocol Reference Manual.
Figure 1.
General block diagram
8-BIT CORE
ALU
OSC1
CONTROL
PROGRAM
(16 K - 32 KBytes)
VDD
RESET
PORT F
PF
(6-bits)
TIMER A
BEEP
PORT A
RAM
(512- 1024 Bytes)
PORT C
10-BIT ADC
VAREF
VSSA
PORT B
PB
(5-bits)
PWM ART
TIMER B
PA
(5-bits)
PORT D
PD
(6-bits)
SPI
PC
(8-bits)
VSS
WATCHDOG
CLOCK CONTROL
LVD
OSC2
MEMORY
MCC/RTC/BEEP
AVD
I2CMMS
PORT E
PE
(2-bits)
SCI
I2C3SNS
INTERNAL RC



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