參數(shù)資料
型號(hào)： M34570M4-227FP
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
中文描述： 單芯片4位微機(jī)的CMOS
文件頁(yè)數(shù)： 11/68頁(yè)
文件大?。?/td> 319K
代理商： M34570M4-227FP
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
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.
ROM size
(
10 bits)
4096 words
8192 words
8192 words
16384 words
16384 words
Pages
32 (0 to 31)
64 (0 to 63)
64 (0 to 63)
128 (0 to 127)
128 (0 to 127)
Fig. 10 ROM map of M34570Mx
Fig. 11
Interrupt address page (addresses 0080
16
to 00FF
16
) structure
A top part of page 1 (addresses 0080
16
to 00FF
16
) 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 0100
16
to 017F
16
) 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.
9
0
8
7
6
5
4
3
2
1
Interrupt address page
0000
16
007
F
16
0080
16
00
FF
16
0100
16
017
F
16
0180
16
Subroutine special page
1
FFF
16
Page 1
Page 2
Page 0
Page 3
Page 127
0
FFF
16
Page 31
9
0
8
7
6
5
4
3
2
1
External 0 interrupt address
0080
16
0084
16
Timer 1 interrupt address
Timer 2 interrupt address
0086
16
00FF
16
Timer 3 interrupt address
0088
16
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