參數(shù)資料
型號： M37549G3-XXXFP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO24
封裝： 5.30 X 10.10 MM, 0.80 MM PITCH, PLASTIC, SSOP-24
文件頁數(shù)： 58/84頁
文件大?。?/td> 1378K
代理商： M37549G3-XXXFP
Rev.2.02
Mar 31, 2009
Page 61 of 81
REJ03B0202-0202
7549 Group
NOTES ON QzROM
Product shipped in blank
As for the product shipped in blank, Renesas does not perform
the writing test to user ROM area after the assembly process
though the QzROM writing test is performed enough before the
assembly process. Therefore, a writing error of approx.0.1 %
may occur.
Moreover, please note the contact of cables and foreign bodies
on a socket, etc. because a writing environment may cause some
writing errors.
Overvoltage
Take care not to apply the voltage above the Vcc pin voltage to
other pins. Make sure that the voltage of the CNVSS pin (VPP
power input pin for QzROM) does not change as shown in the
bold-lined periods (Figure 81) when powering on and off. If the
voltage changes as shown, the QzROM contents may be
rewritten.
Fig 81. Timing Diagram (bold-lined periods are applicable)
Notes On QzROM Writing Orders
When ordering the QzROM product shipped after writing,
submit the mask file (extension: .mask) which is made by the
mask file converter MM.
Be sure to set the ROM option data* setup when making the
mask file by using the mask file converter MM.. The ROM
code protect is specified according to the ROM option data* in
the mask file which is submitted at ordering. Note that the
mask file which has nothing at the ROM option data* or has
the data other than “0016” and “FF16” can not be accepted.
Set “FF16” to the ROM code protect address in ROM data
regardless of the presence or absence of a protect. When data
other than “FF16” is set, we may ask that the ROM data be
submitted again.
* ROM option data: mask option noted in MM
<DATA REQUIRED FOR QzROM WRITING ORDERS
The following are necessary when ordering a QzROM product
shipped after writing:
1. QzROM Writing Confirmation Form*
2. Mark Specification Form*
3. ROM data .......... Mask file
* For the QzROM writing confirmation form and the mark
specification form, refer to the “Renesas Technology Corp.”
Homepage (http://www.renesas.com/homepage.jsp).
Note that we cannot deal with special font marking (customer's
trademark etc.) in QzROM microcomputer.
VCC pin voltage
CNVSS pin voltage
1.8 V
(1) The input voltage to other MCU pins rises before the VCC pin
voltage rises.
(2) The input voltage to other MCU pins falls before the VCC pin
voltage falls.
Note: If VCC falls below the minimum value 1.8 V (shaded areas),
the internal circuit becomes unstable. Take additional care
to prevent overvoltage.
~~
(1)
(2)
~~
相關(guān)PDF資料
PDF描述
M37560M8-XXXFP 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP100
M37560MF-XXXGP 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP100
M37641F8FP 8-BIT, FLASH, 12 MHz, MICROCONTROLLER, PQFP80
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