參數(shù)資料
型號(hào)： M34250M2-XXXFP
元件分類： 微控制器/微處理器
英文描述： 4-BIT, MROM, 4.4 MHz, MICROCONTROLLER, PDSO20
封裝： PLASTIC, SOP-20
文件頁(yè)數(shù)： 55/61頁(yè)
文件大?。?/td> 654K
代理商： M34250M2-XXXFP
56
MITSUBISHI MICROCOMPUTERS
4250 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
Fig. 33 Flow of writing and test of the product shipped in
blank
Writing with PROM programmer
Screening (Leave at 150 °C for 40 hours) (Note)
Verify test with PROM programmer
Function test in target device
Since the screening temperature is higher
than storage temperature, never expose the
microcomputer to 150°C exceeding 100
hours.
Note:
(1) PROM mode
The 4250 Group has a function to serially input/output the
command codes, addresses, and data required for operation
(e.g. read and program) on the built-in PROM using only a
few pins. This mode can be selected by setting pins SDA (serial
data input/output), SCLK (serial clock input), and PGM to “H”
after connecting wires as shown in Figure 32 and powering
on the VDD pin, and then applying 12 V to the VPP pin.
In the PROM mode, three types of software commands (read,
program, and program verify) can be used.
Clock-synchronous serial I/O is used, beginning from the LSB
(LSB first). Use the special-purpose serial programmer when
performing serial read/program.
Refer to the Mitsubishi Data Book “DEVELOPMENT
SUPPORT TOOLS FOR MICROCOMPUTERS” about the
serial programmer (serial programmer and control software,
etc.) for the Mitsubishi single-chip microcomputers.
(2) Notes on handling
A high-voltage is used for writing. Take care that overvoltage
is not applied. Take care especially at turning on the power.
For the One Time PROM version shipped in blank,
Mitsubishi Electric corp. does not perform PROM writing
test and screening in the assembly process and following
processes. In order to improve reliability after writing,
performing writing and test according to the flow shown in
Figure 33 before using is recommended (Products shipped
in blank: PROM contents is not written in factory when
shipped)
相關(guān)PDF資料
PDF描述
M34250M2-XXXFP 4-BIT, MROM, 4.4 MHz, MICROCONTROLLER, PDSO20
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M34280M1-XXXGP 4-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO20
M34280E1GP 4-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PDSO20
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