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參數(shù)資料
| 型號： | EM78458 |
| 英文描述： | Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: 0°C to 70°C; Package: 16-QFN |
| 中文描述： | 8位微控制器的通用產(chǎn)品 |
| 文件頁數(shù)： | 56/57頁 |
| 文件大小： | 854K |
| 代理商： | EM78458 |
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EM78458/459
MASK ROM
This specification is subject to change without prior notice.
2002/03/01
8
4. R3 (Status Register)
7
6
5
4
3
2
1
0
CMPOUT
PS1
PS0
T
P
Z
DC
C
Bit 7 (CMPOUT) the result of the comparator output.
Bit 6 (PS1) ~ 5 (PS0) Page select bits. PS0~PS1 are used to select a program memory page. When
executing a "JMP", "CALL", or other instructions which cause the program counter to be changed
(e.g. MOV R2, A), PS0~PS1 are loaded into the 11th and 12th bits of the program counter where it
selects one of the available program memory pages. Note that RET (RETL, RETI) instruction does
not change the PS0~PS1 bits. That is, the return will always be to the page from the place where the
subroutine was called, regardless of the current setting of PS0~PS1 bits.
PS1
PS0
Program memory page [Address]
0
Page 0 [000-3FF]
0
1
Page 1 [400-7FF]
1
0
Page 2 [800-BFF]
1
Page 3 [C00-FFF]
Bit 4 (T) Time-out bit. Set to 1 by the "SLEP" and "WDTC" commands, or during Power on and reset
to 0 by WDT time-out.
Bit 3 (P) Power-down bit. Set to 1 during power-on or by a "WDTC" command and reset to 0 by a
"SLEP" command.
Bit 2 (Z) Zero flag. Set to "1" if the result of an arithmetic or logic operation is zero.
Bit 1 (DC) Auxiliary carry flag
Bit 0 (C) Carry flag
5. R4 (RAM Select Register)
Bits 0~5 are used to select registers (address: 00~3F) in the indirect address mode.
Bit 6 is used to select bank 0 or bank 1.
Bit 7 is a general-purpose read/write bit.
See the configuration of the data memory in Fig. 4.
6. R5 ~ R6 (Port 5 ~ Port 6)
R5 and R6 are I/O registers.
7. R7 ~ R8
All of these are 8-bit general-purpose registers.
相關(guān)PDF資料 |
PDF描述 |
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| EM78459 | Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: -40°C to 85°C; Package: 14-SOIC |
| EM78450 | Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: 0°C to 70°C; Package: 16-QFN |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EM78458AM | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:8-Bit Microcontroller with MASK ROM |
| EM78458AP | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:8-Bit Microcontroller with MASK ROM |
| EM78459 | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:8-Bit Microcontroller with MASK ROM |
| EM78459AK | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:8-Bit Microcontroller with MASK ROM |
| EM78459AM | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:8-Bit Microcontroller with MASK ROM |
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