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參數(shù)資料
| 型號： | M34556M4H-XXXFP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO42 |
| 封裝： | 0.450 INCH, 0.80 MM PITCH, PLASTIC, SSOP-42 |
| 文件頁數(shù)： | 49/147頁 |
| 文件大?。?/td> | 1087K |
| 代理商： | M34556M4H-XXXFP |
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Rev.3.02
Dec 22, 2006
page 140 of 142
REJ03B0025-0302
4556 Group
Table 19 Product of built-in PROM version
PROM size
( 10 bits)
8192 words
RAM size
( 4 bits)
288 words
M34556G8FP
M34556G8HFP
One Time PROM [shipped in blank]
42P2R-A
BUILT-IN PROM VERSION
In addition to the mask ROM versions, the 4556 Group has the
One Time PROM versions whose PROMs can only be written to
and not be erased.
The built-in PROM version has functions similar to those of the
mask ROM versions, but it has PROM mode that enables writing to
built-in PROM.
(1) PROM mode
The 4556 Group has a PROM mode in addition to a normal opera-
tion mode. It 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 muddog entry after powering on the VDD pin.
In the PROM mode, three types of software commands (read, pro-
gram, and program verify) can be used. Clock-synchronous serial
I/O is used, beginning from the LSB (LSB first).
(2) Notes on handling
For the One Time PROM version shipped in blank, Renesas
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 60 before using is recommended (Prod-
ucts shipped in blank: PROM contents is not written in factory
when shipped).
(3) Difference between Mask ROM version and
One Time PROM version
Mask ROM version and One Time PROM version have some dif-
ference of the following characteristics within the limits of an
electrical property by difference of a manufacture process, built-
in ROM, and a layout pattern.
a characteristic value
a margin of operation
the amount of noise-proof
noise radiation, etc.,
Accordingly, be careful of them when swithcing.
Fig. 68 Flow of writing and test of the product shipped in blank
ROM type
Package
Part number
Table 19 shows the product of built-in PROM version. Figure 61
shows the pin configurations of built-in PROM versions.
The One Time PROM version has pin-compatibility with the mask
ROM version.
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:
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PDF描述 |
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| M34559G6-XXXFP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP52 |
| M34570EDFP | 4-BIT, OTPROM, 2 MHz, MICROCONTROLLER, PDSO36 |
| M34570M4-XXXFP | 4-BIT, MROM, 2 MHz, MICROCONTROLLER, PDSO36 |
| M34570M8-XXXFP | 4-BIT, MROM, MICROCONTROLLER, PDSO36 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M34556M4-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34556M8H-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34556M8-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34556MXH-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34556MX-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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