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参数资料
| 型号： | ST52T430K3T6 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, OTPROM, 20 MHz, MICROCONTROLLER, PQFP32 |
| 封装： | TQFP-32 |
| 文件页数： | 6/88页 |
| 文件大小： | 1162K |
| 代理商： | ST52T430K3T6 |
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ST52T430/E430
2 INTERNAL ARCHITECTURE
ST52x430 is made up of the following blocks and
peripherals:
s
Control Unit (CU) and Data Processing Unit
(DPU)
s
ALU / Fuzzy Core
s
EPROM
s
256 Byte RAM
s
Clock Oscillator
s
Analog Multiplexer and A/D Converter
s
3 PWM / Timers
s
SCI
s
Digital I/O port
2.1 ST52x430 Operating Modes
ST52x430 works in two modes, Programming and
Working Modes, depending on the control signals
level RESET, TEST and VPP
The Operating modes are selected by setting the
control signal level as specified in the Control
Signals Setting table.
2.2 Control Unit and Data Processing Unit
The Control Unit (CU) formally includes five main
blocks. Each block decodes a set of instructions,
generating the appropriate control signals. The
main parts of the CU are illustrated in Figure 2.1.
The five different parts of the CU manage Loading,
Logic/Arithmetic, Jump, Control and the Fuzzy
instruction set.
The block called “Collector” manages the signals
deriving from the different parts of the CU, defining
the signals for the Data Processing Unit (DPU) and
the different peripherals of the microcontroller.
The block called “Arbiter” manages the different-
parts of the CU so that only one part of the system
is activated during working mode.
The CU structure is very flexible. It was designed
with the purpose of easily adapting the core of the
microcontroller to market needs. New instruction
sets or new peripherals can be easily included
without
changing
the
structure
of
the
microcontroller, maintaining code compatibility.
The CU reads the instructions stored on EPROM
(Fetch) and decodes them. According to the
instruction types, the arbiter activates one of the
main blocks of the CU. Afterwards, all the control
signals for the DPU are generated.
A set of 46 different arithmetic, fuzzy and logic
instructions is available. Each instruction requires
6 (fuzzy instructions) to 26 (DIVISION) clock
pulses to be performed.
The DPU receives, stores and sends instructions
deriving from EPROM, RAM or peripherals in order
to execute them.
2.2.1 Program Counter.
The Program Counter (PC) is a 13-bit register that
contains the address of the next memory location
to be processed by the core. This memory location
may be an opcode, operand, or an address of an
operand.
The 13-bit length allows direct addressing of a
maximum of 8,192 bytes in the program space.
After having read the current instruction address,
the PC value is incremented. The result of this
operation is shifted back into the PC.
The PC can be changed in the following ways:
s
JP (Jump)PC = Jump Address
s
InterruptPC = Interrupt Vector
s
RETIPC = Pop (stack)
s
RETPC = Pop (stack)
s
CALLPC = Subroutines address
s
ResetPC = Reset Vector
s
Normal InstructionPC = PC + 1
2.2.2 Flags.
The ST52x430 core includes a different set of
flags that correspond to 2 different modes: normal
mode and interrupt mode. Each set of flags con-
sists of a CARRY flag (C), ZERO flag (Z) and
SIGN flag (S).
One set (CN, ZN, SN) is used during normal
operation and one is used during interrupt mode
(CI, ZI, SI). Formally, the user has to manage
only one set of flags: C, Z and S.
Table 2.1 Control Signals Setting
Control
Signal
Pro-
gramming
Reset
Working
RESET
VSS
VDD
TEST
VSS
VPP
12 V
VSS
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ST52T440 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-BIT INTELLIGENT CONTROLLER UNIT ICU Timer/PWM, Analog Comparator, Triac/PWM Timer, WDG |
| ST52T440F0B6 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-BIT INTELLIGENT CONTROLLER UNIT ICU Timer/PWM, Analog Comparator, Triac/PWM Timer, WDG |
| ST52T440F0M6 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-BIT INTELLIGENT CONTROLLER UNIT ICU Timer/PWM, Analog Comparator, Triac/PWM Timer, WDG |
| ST52T440F1B6 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-BIT INTELLIGENT CONTROLLER UNIT ICU Timer/PWM, Analog Comparator, Triac/PWM Timer, WDG |
| ST52T440F1M6 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-BIT INTELLIGENT CONTROLLER UNIT ICU Timer/PWM, Analog Comparator, Triac/PWM Timer, WDG |
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