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ST72340 Datasheet(PDF) 5 Page - STMicroelectronics

Part No. ST72340
Description  8-BIT MCU WITH UP TO 16K FLASH MEMORY, 10-BIT ADC, TWO 16-BIT TIMERS, TWO I2C, SPI, SCI
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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ST72340, ST72344, ST72345
5/191
1 INTRODUCTION
The ST7234x devices are members of the ST7 mi-
crocontroller family. 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 power consump-
tion 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 micro-
controllers feature true bit manipulation, 8x8 un-
signed 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
(16K - 32K Bytes)
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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