参数资料
型号: ADUC834BSZ
厂商: Analog Devices Inc
文件页数: 43/80页
文件大小: 0K
描述: IC ADC DUAL16/24BIT W/MCU 52MQFP
产品培训模块: Process Control
标准包装: 1
系列: MicroConverter® ADuC8xx
核心处理器: 8052
芯体尺寸: 8-位
速度: 12.58MHz
连通性: EBI/EMI,I²C,SPI,UART/USART
外围设备: POR,PSM,PWM,温度传感器,WDT
输入/输出数: 34
程序存储器容量: 62KB(62K x 8)
程序存储器类型: 闪存
EEPROM 大小: 4K x 8
RAM 容量: 2.25K x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 5.25 V
数据转换器: A/D 3x16b,4x24b; D/A 1x12b
振荡器型: 内部
工作温度: -40°C ~ 125°C
封装/外壳: 52-QFP
包装: 托盘
产品目录页面: 738 (CN2011-ZH PDF)
REV. A
–48–
ADuC834
Table XXIII. DPCON SFR Bit Designations
Bit
Name
Description
7
–––
Reserved for Future Use
6
DPT
Data Pointer Automatic Toggle Enable.
Cleared by user to disable auto swapping of the DPTR.
Set in user software to enable automatic toggling of the DPTR after each MOVX or MOVC instruction.
5DP1m1
Shadow Data Pointer Mode
4DP1m0
These two bits enable extra modes of the shadow data pointer operation allowing for more compact
and more efficient code size and execution.
m1
m0
Behavior of the Shadow Data Pointer
00
8052 Behavior
01
DPTR is post-incremented after a MOVX or a MOVC instruction
10
DPTR is post-decremented after a MOVX or MOVC instruction
11
DPTR LSB is toggled after a MOVX or MOVC instruction
(This instruction can be useful for moving 8-bit blocks to/from 16-bit devices)
3DP0m1
Main Data Pointer Mode
2DP0m0
These two bits enable extra modes of the main data pointer operation allowing for more compact and
more efficient code size and execution.
m1
m0
Behavior of the Main Data Pointer
00
8052 Behavior
01
DPTR is post-incremented after a MOVX or a MOVC instruction
10
DPTR is post-decremented after a MOVX or MOVC instruction
11
DPTR LSB is toggled after a MOVX or MOVC instruction
(This instruction can be useful for moving 8-bit blocks to/from 16-bit devices)
1
–––
This bit is not implemented to allow the INC DPCON instruction toggle the data pointer without
incrementing the rest of the SFR.
0
DPSEL
Data Pointer Select.
Cleared by user to select the main data pointer. This means that the contents of the main 24-bit DPTR
appears in the 3 SFRs DPL, DPH, and DPP.
Set by the user to select the shadow data pointer. This means that the contents of the shadow 24-bit
DPTR appears in the 3 SFRs DPL, DPH, and DPP.
NOTES
1. This is the only place where the main and shadow data pointers are distinguished. Everywhere else in this data sheet, wherever the DPTR is mentioned, operation
on the active DPTR is implied.
2. Only MOVC/MOVX @DPTR instructions are relevant above. MOVC/MOVX PC/@Ri instructions will not cause the DPTR to automatically post increment/decrement,
and so on. To illustrate the operation of DPCON, the following code will copy 256 bytes of code memory at Address D000h into XRAM starting from Address 0000h.
the code uses 16 bytes and 2054 cycles. To perform this on a standard 8051 requires approximately 33 bytes and 7172 cycles (depending on how it is implemented).
DUAL DATA POINTER
The ADuC834 incorporates two data pointers. The second data
pointer is a shadow data pointer and is selected via the data
pointer control SFR (DPCON). DPCON also includes features
such as automatic hardware post-increment and post-decrement,
as well as automatic data pointer toggle. DPCON is described
in Table XXIII.
DPCON
Data Pointer Control SFR
SFR Address
A7H
Power-On Default Value
00H
Bit Addressable
No
MOV
DPTR,#0
; Main DPTR = 0
MOV
DPCON,#55h
; Select shadow DPTR
; DPTR1 increment mode,
; DPTR0 increment mode
; DPTR auto toggling ON
MOV
DPTR,#0D000h
; Shadow DPTR = D000h
MOVELOOP:
CLR
A
MOVC A,@A+DPTR
; Get data
; Post Inc DPTR
; Swap to Main DPTR (Data)
MOVX @DPTR,A
; Put ACC in XRAM
; Increment main DPTR
; Swap to Shad DPTR (Code)
MOV
A, DPL
JNZ
MOVELOOP
相关PDF资料
PDF描述
VI-JVP-IY-F2 CONVERTER MOD DC/DC 13.8V 50W
VE-B3D-IY-F2 CONVERTER MOD DC/DC 85V 50W
AT91SAM9XE256-QU MCU ARM9 256K FLASH 208-PQFP
VI-JVN-IY-F4 CONVERTER MOD DC/DC 18.5V 50W
VI-JVM-IY-F2 CONVERTER MOD DC/DC 10V 50W
相关代理商/技术参数
参数描述
ADUC836 制造商:AD 制造商全称:Analog Devices 功能描述:MicroConverter, Dual 16-Bit-ADCs with Embedded 62 kB Flash MCU
ADUC836_02 制造商:AD 制造商全称:Analog Devices 功能描述:MicroConverter, Dual 16-Bit ADCs with Embedded 62 kB Flash MCU
ADUC836BCP 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述:
ADUC836BCPZ 功能描述:IC MCU 62K FLASH ADC/DAC 56LFCSP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:MicroConverter® ADuC8xx 标准包装:38 系列:Encore!® XP® 核心处理器:eZ8 芯体尺寸:8-位 速度:5MHz 连通性:IrDA,UART/USART 外围设备:欠压检测/复位,LED,POR,PWM,WDT 输入/输出数:16 程序存储器容量:4KB(4K x 8) 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:1K x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 3.6 V 数据转换器:- 振荡器型:内部 工作温度:-40°C ~ 105°C 封装/外壳:20-SOIC(0.295",7.50mm 宽) 包装:管件 其它名称:269-4116Z8F0413SH005EG-ND
ADUC836BCPZ-REEL 功能描述:IC MCU 62K FLASH ADC/DAC 56LFCSP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:MicroConverter® ADuC8xx 标准包装:38 系列:Encore!® XP® 核心处理器:eZ8 芯体尺寸:8-位 速度:5MHz 连通性:IrDA,UART/USART 外围设备:欠压检测/复位,LED,POR,PWM,WDT 输入/输出数:16 程序存储器容量:4KB(4K x 8) 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:1K x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 3.6 V 数据转换器:- 振荡器型:内部 工作温度:-40°C ~ 105°C 封装/外壳:20-SOIC(0.295",7.50mm 宽) 包装:管件 其它名称:269-4116Z8F0413SH005EG-ND