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參數資料
| 型號： | HT48R30A |
| 廠商： | Holtek Semiconductor Inc. |
| 元件分類： | 數學處理器 |
| 英文描述： | 8-BIT MICROCONTROLLER |
| 中文描述： | 8位微控制器 |
| 文件頁數： | 9/43頁 |
| 文件大小： | 710K |
| 代理商： | HT48R30A |
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HT48R30A-1
Rev. 1.10
9
July 2, 2001
(INTC;0BH), Watchdog Timer option setting
register (WDTS;09H), I/O registers (PA;12H,
PB;14H, PC;16H, PG;1EH) and I/O control
registers (PAC;13H, PBC;15H, PCC;17H,
PGC;1FH). The remaining space before the
20H is reserved for future expanded usage and
reading these locations will get "00H". The
general purpose data memory, addressed from
20H to 7FH, is used for data and control infor-
mation under instruction commands.
All of the data memory areas can handle arith-
metic, logic, increment, decrement and rotate
operations directly. Except for some dedicated
bits, each bit in the data memory can be set and
reset by "SET [m].i" and "CLR [m].i". They are
also indirectly accessible through memory
pointer registers (MP).
Indirect addressing register
Location 00H is indirect addressing register
that is not physically implemented. Any
read/write operation of [00H] will access data
memory pointed to by MP. Reading location
00H itself indirectly will return the result 00H.
Writing indirectly results in no operation.
The memory pointer register (MP) is 8-bit reg-
isters.
Accumulator
The accumulator is closely related to ALU oper-
ations. It is also mapped to location 05H of the
data memory and can carry out immediate data
operations. The data movement between two
data memory locations must pass through the
accumulator.
Arithmetic and logic unit
ALU
This circuit performs 8-bit arithmetic and logic
operations. The ALU provides the following func-
tions:
Arithmetic operations (ADD, ADC, SUB,
SBC, DAA)
Logic operations (AND, OR, XOR, CPL)
Rotation (RL, RR, RLC, RRC)
Increment and Decrement (INC, DEC)
Branch decision (SZ, SNZ, SIZ, SDZ ....)
The ALU not only saves the results of a data op-
eration but also changes the status register.
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RAM mapping
相關PDF資料 |
PDF描述 |
|---|---|
| HT48R31-1 | 8-bit OTP Microcontrollers |
| HT48R31-2 | 8-bit OTP Microcontrollers |
| HT48R50-2(40DIP-A0) | 8-BIT MICROCONTROLLER |
| HT48R50-1(28SKDIP-H0) | 8-BIT MICROCONTROLLER |
| HT48R50-1(40DIP-A0) | 8-BIT MICROCONTROLLER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| HT48R30A-1 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:I/O Type 8-Bit MCU |
| HT48R30A-1_09 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:I/O Type 8-Bit MCU |
| HT48R31 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:8-Bit Microcontroller Series |
| HT48R31(18DIP-A0) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| HT48R31(20DIP-F0) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
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