參數(shù)資料
型號： M34518M4-XXXSP
元件分類： 微控制器/微處理器
英文描述： 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDIP32
封裝： 8.90 X 28 MM, 1.78 MM PITCH, PLASTIC, SDIP-32
文件頁數(shù)： 66/162頁
文件大?。?/td> 1149K
代理商： M34518M4-XXXSP
Rev.3.01
2005.06.15
page 156 of 157
REJ03B0008-0301
4518 Group
(1) PROM mode
The built-in PROM version has a PROM mode in addition to a nor-
mal operation mode. The PROM mode is used to write to and read
from the built-in PROM.
In the PROM mode, the programming adapter can be used with a
general-purpose PROM programmer to write to or read from the
built-in PROM as if it were M5M27C256K.
Programming adapter is listed in Table 24. Contact addresses at
the end of this data sheet for the appropriate PROM programmer.
Writing and reading of built-in PROM
Programming voltage is 12.5 V. Write the program in the PROM of
the built-in PROM version as shown in Figure 76.
(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, Renesas
Technology 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 77 before using is rec-
ommended (Products shipped in blank: PROM contents is not
written in factory when shipped).
(3) Electric Characteristic Differences
Between Mask ROM and One TIme PROM
Version MCU
There are differences in electric characteristics, operation margin,
noise immunity, and noise radiation between Mask ROM and One
Time PROM version MCUs due to the difference in the manufactur-
ing processes.
When manufacturing an application system with the One Time
PROM version and then switching to use of the Mask ROM ver-
sion, please perform sufficient evaluations for the commercial
samples of the Mask ROM version.
Fig. 76 PROM memory map
Fig. 77 Flow of writing and test of the product shipped in blank
Microcomputer
M34518E8FP
M34518E8SP
Name of Programming Adapter
PCA7442FP
PCA7442SP
Table 24 Programming adapter
Address
000016
3FFF16
7FFF16
1
11
D4
D3
D2
D1
D0
High-order 5 bits
1
11
D4
D3
D2
D1
D0
Low-order 5 bits
400016
1FFF16
5FFF16
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:
相關PDF資料
PDF描述
M34518M8-XXXFP 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP32
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相關代理商/技術參數(shù)
參數(shù)描述
M34518M6-XXXFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
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M34519M6-XXXFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:4-BIT CISC SINGLE-CHIP MICROCOMPUTER 720 FAMILY / 4500 SERIES
M34519M8-XXXFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:4-BIT CISC SINGLE-CHIP MICROCOMPUTER 720 FAMILY / 4500 SERIES
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