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| 型号： | EVAL-ADUC842QSZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 14/88页 |
| 文件大小： | 0K |
| 描述： | KIT DEV QUICK START ADUC842 |
| 标准包装： | 1 |
| 系列： | QuickStart™ 套件 |
| 类型： | MCU |
| 适用于相关产品： | ADuC824 |
| 所含物品： | 评估板、电源、缆线、软件和说明文档 |
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ADuC841/ADuC842/ADuC843
Rev. 0 | Page 21 of 88
ACCUMULATOR SFR (ACC)
ACC is the accumulator register and is used for math opera-
tions including addition, subtraction, integer multiplication and
division, and Boolean bit manipulations. The mnemonics for
accumulator-specific instructions refer to the accumulator as A.
B SFR (B)
The B register is used with the ACC for multiplication and
division operations. For other instructions, it can be treated as a
general-purpose scratchpad register.
Stack Pointer (SP and SPH)
The SP SFR is the stack pointer and is used to hold an internal
RAM address that is called the top of the stack. The SP register
is incremented before data is stored during PUSH and CALL
executions. While the stack may reside anywhere in on-chip
RAM, the SP register is initialized to 07H after a reset, which
causes the stack to begin at location 08H.
As mentioned earlier, the parts offer an extended 11-bit stack
pointer. The 3 extra bits used to make up the 11-bit stack
pointer are the 3 LSBs of the SPH byte located at B7H.
Data Pointer (DPTR)
The data pointer is made up of three 8-bit registers named DPP
(page byte), DPH (high byte), and DPL (low byte). These are
used to provide memory addresses for internal and external
code access and for external data access. They may be manipu-
lated as a 16-bit register (DPTR = DPH, DPL), although INC
DPTR instructions automatically carry over to DPP, or as three
independent 8-bit registers (DPP, DPH, DPL). The parts support
dual data pointers. Refer to the Dual Data Pointer section.
Program Status Word (PSW)
The PSW SFR contains several bits reflecting the current status
of the CPU, as detailed in Table 5.
SFR Address
D0H
Power-On Default
00H
Bit Addressable
Yes
Table 5. PSW SFR Bit Designations
Bit
Name
Description
7
CY
Carry Flag.
6
AC
Auxiliary Carry Flag.
5
F0
General-Purpose Flag.
4
RS1
Register Bank Select Bits.
3
RS0
RS1
0
1
RS0
0
1
0
1
Selected Bank
0
1
2
3
2
OV
Overflow Flag.
1
F1
General-Purpose Flag.
0
P
Parity Bit.
Power Control SFR (PCON)
The PCON SFR contains bits for power-saving options and
general-purpose status flags, as shown in Table 6.
SFR Address
87H
Power-On Default
00H
Bit Addressable
No
Table 6. PCON SFR Bit Designations
Bit No.
Name
Description
7
SMOD
Double UART Baud Rate.
6
SERIPD
I2C/SPI Power-Down Interrupt Enable.
5
INT0PD
INT0 Power-Down Interrupt Enable.
4
ALEOFF
Disable ALE Output.
3
GF1
General-Purpose Flag Bit.
2
GF0
General-Purpose Flag Bit.
1
PD
Power-Down Mode Enable.
0
IDL
Idle Mode Enable.
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相关代理商/技术参数 |
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| EVAL-ADUC845QS | 制造商:Analog Devices 功能描述:QUICK START DEVELOPMENT SYSTEM - Bulk |
| EVAL-ADUC845QSP | 制造商:Analog Devices 功能描述:MICROCONVERTER?, 1-CYCLE 8052 MCU + 10-CHANNEL, DUAL 24-BIT - Bulk |
| EVAL-ADUC845QSPZ | 功能描述:KIT DEV QUICK START ADUC845 RoHS:是 类别:编程器，开发系统 >> 通用嵌入式开发板和套件（MCU、DSP、FPGA、CPLD等） 系列:QuickStart™ PLUS 套件 产品培训模块:Blackfin® Processor Core Architecture Overview Blackfin® Device Drivers Blackfin® Optimizations for Performance and Power Consumption Blackfin® System Services 特色产品:Blackfin? BF50x Series Processors 标准包装:1 系列:Blackfin® 类型:DSP 适用于相关产品:ADSP-BF548 所含物品:板，软件，4x4 键盘，光学拨轮，QVGA 触摸屏 LCD 和 40G 硬盘 配用:ADZS-BFBLUET-EZEXT-ND - EZ-EXTENDER DAUGHTERBOARDADZS-BFLLCD-EZEXT-ND - BOARD EXT LANDSCAP LCD INTERFACE 相关产品:ADSP-BF542BBCZ-4A-ND - IC DSP 16BIT 400MHZ 400CSBGAADSP-BF544MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF542MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF542KBCZ-6A-ND - IC DSP 16BIT 600MHZ 400CSBGAADSP-BF547MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF548BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF547BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF544BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF542BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGA |
| EVAL-ADUC845QSZ | 功能描述:KIT DEV FOR ADUC845 QUICK START RoHS:是 类别:编程器，开发系统 >> 通用嵌入式开发板和套件（MCU、DSP、FPGA、CPLD等） 系列:QuickStart™ 套件 标准包装:1 系列:PICDEM™ 类型:MCU 适用于相关产品:PIC10F206，PIC16F690，PIC16F819 所含物品:板，线缆，元件，CD，PICkit 编程器 产品目录页面:659 (CN2011-ZH PDF) |
| EVAL-ADUC846QS | 制造商:AD 制造商全称:Analog Devices 功能描述:MicroConverter, Dual 16-Bit ADCs with Embedded 62kB FLASH MCU |
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