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M306V5ME-XXXSP Datasheet(PDF) 10 Page - Mitsubishi Electric Semiconductor

Part No. M306V5ME-XXXSP
Description  SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
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Maker  MITSUBISHI [Mitsubishi Electric Semiconductor]
Homepage  http://www.mitsubishichips.com
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M306V5ME-XXXSP Datasheet(HTML) 10 Page - Mitsubishi Electric Semiconductor

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M306V5ME-XXXSP
M306V5EESP
MITSUBISHI MICROCOMPUTERS
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
10
Rev. 1.0
2. OPERATION OF FUNCTIONAL BLOKS
This microcomputer accommodates certain units in a single chip. These units include ROM and RAM to
store instructions and data and the central processing unit (CPU) to execute arithmetic/logic operations.
Also included are peripheral units such as timers, serial I/O, D-A converter, DMAC, OSD circuit, data slicer,
A-D converter, and I/O ports.
The following explains each unit.
2.1 Memory
Figure 2.1.1 is a memory map. The address space extends the 1M bytes from address 0000016 to
FFFFF16. From FFFFF16 down is ROM. There is 192K bytes of internal ROM from D000016 to FFFFF16.
The vector table for fixed interrupts such as the reset mapped to FFFDC16 to FFFFF16. The starting ad-
dress of the interrupt routine is stored here. The address of the vector table for timer interrupts, etc., can be
set as desired using the internal register (INTB). See the section on interrupts for details.
5K bytes of internal RAM is mapped to the space from 02C0016 to 03FFF16. In addition to storing data, the
RAM also stores the stack used when calling subroutines and when interrupts are generated.
The SFR area is mapped to 0000016 to 003FF16. This area accommodates the control registers for periph-
eral devices such as I/O ports, A-D converter, serial I/O, and timers, etc. Figures 2.1.2 to 2.1.5 are location
of peripheral unit control registers. Any part of the SFR area that is not occupied is reserved and cannot be
used for other purposes.
The special page vector table is mapped to FFE0016 to FFFDB16. If the starting addresses of subroutines
or the destination addresses of jumps are stored here, subroutine call instructions and jump instructions
can be used as 2-byte instructions, reducing the number of program steps.


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