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ST52T301P bảng dữ liệu(PDF) 6 Page - STMicroelectronics

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Giải thích chi tiết về linh kiện  8-Bit OTP/EPROM DuaLogic] MCUs WITH ADC, UART, TIMER, TRIAC & PWM DRIVER
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2 INTERNAL ARCHITECTURE
ST52x301 is made up by the following blocks and
peripherals:
Control Unit
Fuzzy Core
ALU
EPROM
Clock Oscillator
Analog Multiplexer and A/D Converter
Prescaler Timer
Bandgap
Triac / PWM Driver
Digital I/O port
Serial Communication Interface
ST52x301 Operating Modes
ST52x301 works in two modes, Programming and
Working Modes, depending on the control signals
level RESET, TEST and MODE.
The Operating modes are selected by setting the
control signal level as specified in the Control
Signals Setting table.
2.1 CONTROL UNIT
The Control Unit (CU) manages: Registers File,
Input Registers, Configuration Registers, ALU,
Accumulator and Multiplexer inputs. Moreover the
CU drives the Fuzzy Core and the peripherals
(Triac/PWM Driver and Timer).
The CU reads the stored instructions on the
EPROM (Fetch) and decodifies them. If the
instructions are arithmetic or logic, the CU runs
them directly, sending the control signals to the
related blocks. If there is a STOP instruction, the
CU transfers the control to the Fuzzy Core.
The Fuzzy Core (FC) will read the next instruction
(that must be a fuzzy instruction)from the EPROM.
The FC mantains the control of the program until
the next STOP instruction. Then the FC transfers
the control to the CU.
These characteristicsallow to mix fuzzy algorithms
with mathematical and logic instructions.
Figure 2.1 shows a flow-chart reasuming the logic
behaviour of the instructions management.
Control
Sign al
Programming
Reset
Working
RESET
00
1
TEST
00
0
MODE
10
0
Table 2.1. Control Signals setting
CU
Reads fromthe EPROM
and
Decodifies the instruction
CU
executes instruction
Fuzzy Core
Reads fromthe EPROM
and
Decodifies the instruction
STOP?
STOP?
No
No
Fuzzy Core
executes instruction
Yes
Yes
Figure 2.1. Computation Algorithm Flow Chart
6/99
ST52T301/E301


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