參數(shù)資料
型號: M37753FFCFP
廠商: Mitsubishi Electric Corporation
英文描述: SINGLE CHIP 16 BIT CMOS MICROCOMPUTER FLASH MEMORY VERSION
中文描述: 單片微機16位CMOS閃存版
文件頁數(shù): 26/67頁
文件大?。?/td> 525K
代理商: M37753FFCFP
26
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
MITSUBISHI MICROCOMPUTERS
M37753FFCFP
M37753FFCHP
SHINGLE-CHIP 16-BIT CMOS MICROCOMPUTER FLASH MEMORY VERSION
Functional outline (Serial I/O mode)
In the serial I/O mode, data is transferred synchronously with the
clock using serial input/output. The input data is read from the SDA
pin into the internal circuit synchronously with the rising edge of the
serial clock pulse; the output data is output from the SDA pin syn-
chronously with the falling edge of the serial clock pulse. Data is
transferred in units of eight bits.
In the first transfer, the user inputs the command code. This is fol-
lowed by address input and data input/output according to the con-
tents of the command. Table 4 shows the software commands used
in the serial I/O mode. The following explains each software com-
mand.
Table 4. Software command (Serial I/O mode)
Bank 0 select
Bank 1 select
Read
Program
Program verify
Auto erase
Error check
Number of transfers
Command
First command
code input
E0
16
E1
16
00
16
40
16
C0
16
30
16
80
16
—————
—————
Read address L (Input)
Program address L (Input)
Verify data (Output)
30
16
(Input)
Error code (Output)
Second
—————
—————
Read address H (Input)
Program address H (Input)
—————
—————
—————
Third
Fourth
—————
—————
Read data (Output)
Program data (Input)
—————
—————
—————
Bank select command
This is the command which specifies the bank of the flash memory,
which is to be read/programmed, before executing the read com-
mand or the program command (and the program verify command).
There are the bank 0 select command (command code “E0
16
”),
which selects bank 0 (addresses 00000
16
to 0FFFF
16
), and the bank
1 select command (command code “E1
16
”), which selects bank 1
(addresses 10000
16
to 1FFFF
16
).
When any bank select command is input once, specified bank is
valid until the next bank select command is input. Accordingly, when
the read command or the program command (and the program verify
command) is executed to plural bytes in the same bank, if any bank
select command is input first, it is unnecessary to input the bank se-
lect command again for the following bytes. When selecting the se-
rial I/O mode (before bank command input), bank 0 is selected.
Note:
Bank select command does not affect the auto erase com-
mand, that is to say, when executing the auto erase com-
mand, all flash memory is erased collectively regardless of
specified bank.
And in the same way, the bank select command does not af-
fect the error check command.
SCLK
SCLK
BUSY
OE
SDA
t
CH
t
CH
Command code input (E0
16
)
0 0 0 0 0 1 1 1
“L”
“H”
SDA
Command code input (E1
16
)
1 0 0 0 0 1 1 1
BUSY
OE
“L”
“H”
Bank 0 select command
Bank 1 select command
Fig. 15 Timings during bank select
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