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參數(shù)資料
| 型號： | ADUC834BCPZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 6/80頁 |
| 文件大小： | 0K |
| 描述： | IC MCU 62K FLASH ADC/DAC 56LFCSP |
| 標準包裝： | 1 |
| 系列： | MicroConverter® ADuC8xx |
| 核心處理器： | 8052 |
| 芯體尺寸： | 8-位 |
| 速度： | 12.58MHz |
| 連通性： | EBI/EMI，I²C，SPI，UART/USART |
| 外圍設備： | POR，PSM，PWM，溫度傳感器，WDT |
| 輸入/輸出數(shù)： | 34 |
| 程序存儲器容量： | 62KB（62K x 8） |
| 程序存儲器類型： | 閃存 |
| EEPROM 大?。?/td> | 4K x 8 |
| RAM 容量： | 2.25K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2.7 V ~ 5.25 V |
| 數(shù)據(jù)轉換器： | A/D 3x16b，4x24b; D/A 1x12b |
| 振蕩器型： | 內部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 56-VFQFN 裸露焊盤，CSP |
| 包裝： | 托盤 |
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REV. A
–14–
ADuC834
When accessing the internal XRAM, the P0 and P2 port pins,
as well as the
RD and WR strobes, will not be output as per a
standard 8051 MOVX instruction. This allows the user to use
these port pins as standard I/O.
The upper 1792 bytes of the internal XRAM can be configured
to be used as an extended 11-bit stack pointer. By default, the
stack will operate exactly like an 8052 in that it will roll over from
FFH to 00H in the general-purpose RAM. On the ADuC834
however, it is possible (by setting CFG834.7) to enable the 11-bit
extended stack pointer. In this case, the stack will roll over from
FFH in RAM to 0100H in XRAM. The 11-bit stack pointer is
visible in the SP and SPH SFRs. The SP SFR is located at 81H
as with a standard 8052. The SPH SFR is located at B7H. The
3 LSBs of this SFR contain the three extra bits necessary to extend
the 8-bit stack pointer into an 11-bit stack pointer.
UPPER 1792
BYTES OF
ON-CHIP XRAM
(DATA + STACK
FOR EXSP = 1,
DATA ONLY
FOR EXSP = 0)
256 BYTES OF
ON-CHIP DATA
RAM
(DATA +
STACK)
LOWER 256
BYTES OF
ON-CHIP XRAM
(DATA ONLY)
00H
FFH
00H
07FFH
CFG834.7 = 0
CFG834.7 = 1
100H
Figure 4. Extended Stack Pointer Operation
External Data Memory (External XRAM)
Just like a standard 8051 compatible core, the ADuC834 can
access external data memory using a MOVX instruction. The
MOVX instruction automatically outputs the various control
strobes required to access the data memory.
The ADuC834 however, can access up to 16 Mbytes of external
data memory. This is an enhancement of the 64 Kbytes external
data memory space available on a standard 8051 compatible core.
The external data memory is discussed in more detail in the
ADuC834 Hardware Design Considerations section.
SPECIAL FUNCTION REGISTERS (SFRS)
The SFR space is mapped into the upper 128 bytes of internal
data memory space and accessed by direct addressing only. It
provides an interface between the CPU and all on-chip periph-
erals. A block diagram showing the programming model of the
ADuC834 via the SFR area is shown in Figure 5.
128-BYTE
SPECIAL
FUNCTION
REGISTER
AREA
62 KBYTE ELECTRICALLY
REPROGRAMMABLE
NONVOLATILE FLASH/EE
PROGRAM MEMORY
8051
COMPATIBLE
CORE
OTHER ON-CHIP
PERIPHERALS
TEMP SENSOR
CURRENT SOURCES
12-BIT DAC
SERIAL I/O
WDT, PSM
TIC, PLL
DUAL
-
ADCs
4 KBYTE
ELECTRICALLY
REPROGRAMMABLE
NONVOLATILE
FLASH/EE DATA
MEMORY
256 BYTES RAM
2K XRAM
Figure 5. Programming Model
All registers, except the Program Counter (PC) and the four
general-purpose register banks, reside in the SFR area. The SFR
registers include control, configuration, and data registers that
provide an interface between the CPU and all on-chip peripherals.
Accumulator SFR (ACC)
ACC is the Accumulator Register and is used for math operations
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.
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 external data access. It may be manipulated as
a 16-bit register (DPTR = DPH, DPL), although INC DPTR
instructions will automatically carry over to DPP, or as three
independent 8-bit registers (DPP, DPH, DPL).
The ADuC834 supports dual data pointers. Refer to the Dual
Data Pointer section in this data sheet.
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| ADUC834BCPZ-REEL | 功能描述:IC MCU 62K FLASH ADC/DAC 56LFCSP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC8xx 標準包裝:38 系列:Encore!® XP® 核心處理器:eZ8 芯體尺寸:8-位 速度:5MHz 連通性:IrDA，UART/USART 外圍設備:欠壓檢測/復位，LED，POR，PWM，WDT 輸入/輸出數(shù):16 程序存儲器容量:4KB（4K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:1K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 3.6 V 數(shù)據(jù)轉換器:- 振蕩器型:內部 工作溫度:-40°C ~ 105°C 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 包裝:管件 其它名稱:269-4116Z8F0413SH005EG-ND |
| ADUC834BS | 制造商:Analog Devices 功能描述:MCU 8-bit ADuC8xx 8052 CISC 62KB Flash 3.3V/5V 52-Pin MQFP 制造商:Rochester Electronics LLC 功能描述:8BIT CISC 62KB FLASH 12.58MHZ 3.3/5V 52MQFP - Bulk 制造商:Analog Devices 功能描述:8BIT MCU +24/16BIT ADC SMD MQFP52 |
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| ADUC836 | 制造商:AD 制造商全稱:Analog Devices 功能描述:MicroConverter, Dual 16-Bit-ADCs with Embedded 62 kB Flash MCU |
| ADUC836_02 | 制造商:AD 制造商全稱:Analog Devices 功能描述:MicroConverter, Dual 16-Bit ADCs with Embedded 62 kB Flash MCU |
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