參數(shù)資料
型號： ADUC842BCP62-3
廠商： ANALOG DEVICES INC
元件分類： 微控制器/微處理器
英文描述： MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU
中文描述： 8-BIT, FLASH, 8.38 MHz, MICROCONTROLLER, QCC56
封裝： 8 X 8 MM, LEAD FRAME, MO-220VLLD2, CSP-56
文件頁數(shù)： 20/88頁
文件大?。?/td> 903K
代理商： ADUC842BCP62-3
ADuC841/ADuC842/ADuC843
Rev. 0 | Page 20 of 88
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
CFG841.7 = 0
CFG842.7 = 0
100H
0
CFG841.7 = 1
CFG842.7 = 1
Figure 24. Extended Stack Pointer Operation
External Data Memory (External XRAM)
Just like a standard 8051 compatible core, the ADuC841/
ADuC842/ADuC843 can access external data memory by using
a MOVX instruction. The MOVX instruction automatically
outputs the various control strobes required to access the data
memory.
The parts, however, can access up to 16 MBytes of external data
memory. This is an enhancement of the 64 kBytes of external
data memory space available on a standard 8051 compatible core.
The external data memory is discussed in more detail in the
Hardware Design Considerations section.
Internal XRAM
The parts contain 2 kBytes of on-chip data memory. This
memory, although on-chip, is also accessed via the MOVX
instruction. The 2 kBytes of internal XRAM are mapped into
the bottom 2 kBytes of the external address space if the
CFG841/CFG842 bit is set. Otherwise, access to the external
data memory occurs just like a standard 8051. When using the
internal XRAM, Ports 0 and 2 are free to be used as general-
purpose I/O.
EXTERNAL
DATA
MEMORY
SPACE
(24-BIT
ADDRESS
SPACE)
000000H
FFFFFFH
CFG841.0 = 0
CFG842.0 = 0
EXTERNAL
DATA
MEMORY
SPACE
(24-BIT
ADDRESS
SPACE)
000000H
FFFFFFH
CFG841.0 = 1
CFG842.0 = 0
0007FFH
000800H
2 kBYTES
ON-CHIP
XRAM
0
Figure 25. Internal and External XRAM
SPECIAL FUNCTION REGISTERS (SFRS)
The SFR space is mapped into the upper 128 bytes of internal
data memory space and is 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
parts via the SFR area is shown in Figure 26.
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, which
provide an interface between the CPU and all on-chip peripherals.
128-BYTE
SPECIAL
FUNCTION
REGISTER
AREA
62-kBYTE
ELECTRICALLY
REPROGRAMMABLE
NONVOLATILE
FLASH/EE PROGRAM
MEMORY
8051
COMPATIBLE
CORE
OTHER ON-CHIP
PERIPHERALS
TEMPERATURE
SENSOR
2
×
12-BIT DACs
SERIAL I/O
WDT
PSM
TIC
PWM
8-CHANNEL
12-BIT ADC
4-kBYTE
ELECTRICALLY
REPROGRAMMABLE
NONVOLATILE
FLASH/EE DATA
MEMORY
2304 BYTES
RAM
0
Figure 26. Programming Model
相關(guān)PDF資料
PDF描述
ADUC843BCP62-5 MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU
ADUC842BCP62-5 MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU
ADUC843BCP62-3 MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU
ADUC842BCP32-3 MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU
ADUC843BCP32-3 MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADUC842BCP62-3U 制造商:Analog Devices 功能描述:MICROCONVERTER 1-CYCLE VERSION ADUC833 - Trays
ADUC842BCP62-3-U2 制造商:Analog Devices 功能描述:MICROCONVERTER 1-CYCLE VERSION ADUC834 - Trays
ADUC842BCP62-5 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述:
ADUC842BCP8-3 制造商:Analog Devices 功能描述: 制造商:Rochester Electronics LLC 功能描述:
ADUC842BCP8-5 制造商:Analog Devices 功能描述:MCU 8-Bit ADuC8xx 8052 CISC 62KB Flash 5V 56-Pin LFCSP EP
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