参数资料
型号: M306K9F8LRP
元件分类: 微控制器/微处理器
英文描述: 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP144
封装: 16 X 16 MM, 0.40 MM PITCH, PLASTIC, TQFP-144
文件页数: 26/101页
文件大小: 2590K
代理商: M306K9F8LRP
Memory
Rev.1.00
Jun 06, 2003
page 13 of 290
M16C/6K9 Group
Operation of Functional Blocks
The M16C/6K9 (144-pin version) group 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 peripheral units such as timers, serial I/O, D-A converter, DMAC, A-D converter, host
bus interface, comparator, PWM output , I2C BUS interface, PS2 interface and I/O ports are included.
The following explains each unit.
Memory
Fig.CA-1 is the memory map. The address space extends up to 1M bytes from address 0000016 to FFFFF16.
From FFFFF16 to the address decreasing direction ROM is allocated. For example, in the M306K9FCLRP,
there is 128K bytes of internal ROM from E000016 to FFFFF16. The vector table for fixed interrupts such as
_______
the reset and NMI are mapped from FFFDC16 to FFFFF16. The starting address 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.
From 0040016 to the address increasing direction RAM is allocated. For example, in the M306K9FCLRP, 5K
bytes of internal RAM is mapped to the space from 0040016 to 017FF16. 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 from 0000016 to 003FF16. This area accommodates the control registers for pe-
ripheral devices such as I/O ports, A-D converter, serial I/O, and timers, etc. Fig.CA-2 to CA-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 from 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.
Fig.CA-1 Memory map
SFR area
For details, see
Fig.CA-2 to Fig.CA-4
Internal RAM area
Internal ROM area
Reset
Watchdog timer
Single step
Address match
BRK instruction
Overflow
Undefined instruction
Special page
vector table
0000016
0040016
XXXXX16
YYYYY16
FFFFF16
FFFDC16
FFE0016
DBC
NMI
Type No.
Address YYYYY16
Address XXXXX16
Inhibited
M306K9FCLRP
E000016
017FF16
M306K9F8LRP
F000016
00FFF16
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