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參數資料
| 型號： | UPD17242UC-XXX-5A4 |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT, MROM, 4.5 MHz, MICROCONTROLLER, PDSO30 |
| 封裝： | 0.300 INCH, PLASTIC, SSOP-30 |
| 文件頁數： | 27/102頁 |
| 文件大?。?/td> | 953K |
| 代理商： | UPD17242UC-XXX-5A4 |
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30
Data Sheet U15002EJ1V1DS
PD17240, 17241, 17242, 17243, 17244, 17245, 17246
(3) Notes on using data buffer
When transferring data to/from the peripheral hardware via the data buffer, the unused peripheral addresses,
write-only peripheral registers (only when executing PUT), and read-only peripheral registers (only when
executing GET) must be handled as follows.
When device operates
Nothing changes even if data is written to a read-only register.
If an unused address is read, an undefined value is read. Nothing changes even if data is written to that
address.
Using assembler
An error occurs if an instruction is executed to read a write-only register.
Again, an error occurs if an instruction is executed to write data to a read-only register.
An error also occurs if an instruction is executed to read or write an unused address.
If an in-circuit emulator (IE-17K or IE-17K-ET) is used (when an instruction is executed for patch
processing)
An undefined value is read if an attempt is made to read the data of a write-only register, but an error does
not occur.
Nothing changes even if data is written to a read-only register, and an error does not occur.
An undefined value is read if an unused address is read; nothing changes even if data is written to this
address. An error does not occur.
相關PDF資料 |
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| UPD178F054 | 78K/0 Series for Instructions | User＇s Manual[10/2001] |
| UPD178F124 | 78K/0 Series for Instructions | User＇s Manual[10/2001] |
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| UPD17P136BGT | MICROCONTROLLER, PDSO28 |
| UPD1913C | Consumer IC |
相關代理商/技術參數 |
參數描述 |
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| UPD17243 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS |
| UPD17243MC-XXX-5A4 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS |
| UPD17244 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS |
| UPD17244MC-XXX-5A4 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS |
| UPD17245 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS |
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