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參數(shù)資料
| 型號(hào)： | HD404828R |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | AS Microcomputer Incorporating a LCD controller/Driver Circuit(帶LCD控制/驅(qū)動(dòng)電路的微計(jì)算機(jī)) |
| 中文描述： | 由于微機(jī)安裝有LCD控制器/驅(qū)動(dòng)電路（帶液晶控制/驅(qū)動(dòng)電路的微計(jì)算機(jī)） |
| 文件頁(yè)數(shù)： | 106/147頁(yè) |
| 文件大?。?/td> | 519K |
| 代理商： | HD404828R |
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HD404829R Series
106
ZTAT
TM
Microcomputer with Built-in Programmable ROM
Programming of Built-in programmable ROM
The MCU can stop its function as an MCU in PROM mode for programming the built-in PROM.
PROM mode is set up by setting the
TEST
,
M
0
, and
M
1
terminals to “Low” level and the RESET terminal
to “High” level.
Writing and reading specifications of the PROM are the same as those for the commercial EPROM27256.
Using a socket adapter for specific use of each product, programming is possible with a general-purpose
PROM writer.
Since an instruction of the HMCS400 series is 10 bits long, a conversion circuit is incorporated to adapt the
general-purpose PROM writer. This circuit splits each instruction into five lower bits and five higher bits
to write from or read to two addresses. This enables use of a general-purpose PROM. For instance, to
write to a 16kword of built-in PROM with a general-purpose PROM writer, specify 32kbyte address
($0000-$7FFF). An example of PROM memory map is shown in figure 95.
Notes:
1. When programming with a PROM writer, set up each ROM size to the address given in table b. If it is
programmed erroneously to an address given in table 27 or later, check of writing of PROM may
become impossible. Particularly, caution should be exercised in the case of a plastic package since
reprogramming is impossible with it. Set the data in unused addresses to $FF.
2. If the indexes of the PROM writer socket, socket adapter and product are not aligned precisely, the
product may break down due to overcurrent. Be sure to check that they are properly set to the writer
before starting the writing process.
3. Two levels of program voltages (V
PP
) are available for the PROM: 12.5V and 21V. Our product
employs a V
PP
of 12.5V. If a voltage of 21V is applied, permanent breakdown of the product will
result. The V
PP
of 12.5V is obtained for the PROM writer by setting it according to the Intel 27258
specifications.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HD404829R | AS Microcomputer Incorporating a LCD controller/Driver Circuit(帶LCD控制/驅(qū)動(dòng)電路的微計(jì)算機(jī)) |
| HD4048412 | 4-Bit Single-Chip Microcomputer |
| HD4048412FS | 4-Bit Single-Chip Microcomputer |
| HD4048412H | RELAY BASE |
| HD4048412TF | 4-Bit Single-Chip Microcomputer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD404828RFS | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:AS Microcomputer Incorporating a LCD controller/Driver Circuit |
| HD404828RH | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:AS Microcomputer Incorporating a LCD controller/Driver Circuit |
| HD404828RTF | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:AS Microcomputer Incorporating a LCD controller/Driver Circuit |
| HD404828TF | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
| HD404829FS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
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