參數(shù)資料
型號(hào)： M37905F8CSP
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PDIP64
封裝： 0.750 INCH, 1.78 MM PITCH, PLASTIC, SDIP-64
文件頁(yè)數(shù)： 15/35頁(yè)
文件大?。?/td> 491K
代理商： M37905F8CSP
16-BIT CMOS MICROCOMPUTER
M37905F8CFP, M37905F8CSP
MITSUBISHI MICROCOMPUTERS
PRELIMINAR
Y
Notice:
This
is not
a final
specification.
Som
e param
etric
lim
its are
subject
to change.
21
Fig. 9 Programming flowchart
Fig. 10 Block erase flowchart
Start
Write 4016
Write,
Address, Data
Flash memory control
register Read
Full status check
Programming
Completed
NO
YES
RY/BY Status
Bit = 1?
Write 2016
Write D016,
Flash memory control
register Read
Full status check
Block erase Completed
NO
YES
Block address
Start
RY/BY Status
Bit = 1?
Erase All Block Command (2016/2016)
Writing command code “2016” at the 1st bus cycle and writing com-
mand code “2016” at the subsequent 2nd bus cycle initiate the con-
tinuous block erase (chip erase) operations for all the blocks.
The completion of the chip erase operation, as well as of the block
erase operation, is confirmed by a read of the flash memory control
register. The result of the automatic erase operation is also reported
by a read of the status register.
During the automatic erase operation (when the RY/BY status bit =
“0”), writing of commands and access to the flash memory must not
be performed.
Status Register
The status register is used to indicate whether the programming/
erase operation has been completed normally or terminated by an
error. By writing the read status register command (7016), the con-
tents of the status register can be read out; by writing the clear sta-
tus register command (5016), the contents of the status register can
be cleared.
Table 3 lists the definition of each bit of the status register.
The status register outputs “8016” after reset is removed.
The status of each bit is described below.
相關(guān)PDF資料
PDF描述
M37905M4C-XXXFP 16-BIT, MROM, 20 MHz, MICROCONTROLLER, PQFP64
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