参数资料
型号: M34570M4-XXXFP
元件分类: 微控制器/微处理器
英文描述: 4-BIT, MROM, 2 MHz, MICROCONTROLLER, PDSO36
封装: 0.450 INCH, 0.80 MM PITCH, PLASTIC, SSOP-36
文件页数: 6/69页
文件大小: 687K
代理商: M34570M4-XXXFP
11
MITSUBISHI MICROCOMPUTERS
4570 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
PROGRAM MEMORY (ROM)
1 word of ROM is composed of 10 bits. ROM is separated every
128 words by the unit of page (addresses 0 to 127). Table 1
shows the ROM size and pages. Figure 10 shows the ROM map
of M34570M8.
Table 1 ROM size and pages
Product
M34570M4
M34570M8
M34570E8
M34570MD
M34570ED
ROM size
(! 10 bits)
4096 words
8192 words
16384 words
Pages
32 (0 to 31)
64 (0 to 63)
128 (0 to 127)
Fig. 10 ROM map of M34570Mx
Fig. 11 Interrupt address page (addresses 008016 to 00FF16) structure
Note: When the TABP instruction is executed after executing
the SBK instruction, data in pages 64 to 127 can be
referred. When the TABP instruction is executed after
executing the RBK instruction, data in pages 0 to 63 can
be referred.
A top part of page 1 (addresses 008016 to 00FF16) is reserved
for interrupt addresses (Figure 11). When an interrupt occurs,
the address (interrupt address) corresponding to each interrupt
is set in the program counter, and the instruction at the interrupt
address is executed. When using an interrupt service routine,
write the instruction generating the branch to that routine at an
interrupt address.
Page 2 (addresses 010016 to 017F16) is the special page for
subroutine calls. Subroutines written in this page can be called
from any page with the 1-word instruction (BM). Subroutines
extending from page 2 to another page can also be called with
the BM instruction when it starts on page 2.
ROM pattern (bits 9 to 0) of all addresses can be used as data
areas with the TABP p instruction.
90
8765432
1
Interrupt address page
000016
008016
017F16
Subroutine special page
007F16
00FF16
010016
1FFF16
018016
Page 1
Page 2
Page 0
Page 3
Page 127
0FFF16
Page 31
90
87
6
54
3
21
External 0 interrupt address
008016
008416
Timer 1 interrupt address
Timer 2 interrupt address
008616
00FF16
Timer 3 interrupt address
008816
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