參數(shù)資料
型號: ADUC814BRUZ
廠商: Analog Devices Inc
文件頁數(shù): 10/72頁
文件大?。?/td> 0K
描述: IC ADC 12BIT W/FLASH MCU 28TSSOP
標(biāo)準(zhǔn)包裝: 50
系列: MicroConverter® ADuC8xx
核心處理器: 8052
芯體尺寸: 8-位
速度: 16.78MHz
連通性: I²C,SPI,UART/USART
外圍設(shè)備: POR,PSM,溫度傳感器,WDT
輸入/輸出數(shù): 17
程序存儲器容量: 8KB(8K x 8)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 640 x 8
RAM 容量: 256 x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 6x12b; D/A 2x12b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 125°C
封裝/外殼: 28-TSSOP(0.173",4.40mm 寬)
包裝: 管件
產(chǎn)品目錄頁面: 738 (CN2011-ZH PDF)
配用: EVAL-ADUC814QSZ-ND - KIT DEV FOR ADUC814 MICROCONVRTR
ADuC814
Rev. A | Page 18 of 72
The SFR space is mapped to 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
ADuC814 via the SFR area is shown in Figure 21. A complete
SFR map is shown in Figure 22.
OTHER ON-CHIP
PERIPHERALS
TEMPERATURE
MONITOR
DUAL 12-BIT DAC
SERIAL I/O
WDT
PSM
TIC
PLL
6-CHANNEL
12-BIT SAR ADC
02748-A
-028
640-BYTE
ELECTRICALLY
REPROGRAMMABLE
NONVOLATILE
FLASH/EE DATA
MEMORY
8-kBYTE
ELECTRICALLY
REPROGRAMMABLE
NONVOLATILE
FLASH/EE PROGRAM
MEMORY
8051
COMPATIBLE
CORE
256 BYTES
RAM
128-BYTE
SPECIAL
FUNCTION
REGISTER
AREA
Figure 21. Programming Model
OVERVIEW OF MCU-RELATED SFRS
Accumulator SFR
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
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 SFR
The SP register is the stack pointer and is used to hold an internal
RAM address 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. This
causes the stack to begin at location 08H.
Data Pointer
The data pointer is made up of two 8-bit registers, named DPH
(high byte) and DPL (low byte). These registers provide memory
addresses for internal code access. The pointer may be manipu-
lated as a 16-bit register (DPTR = DPH, DPL), or as two inde-
pendent 8-bit registers (DPH, DPL).
Program Status Word SFR
The program status word (PSW) register is the program status word that contains several bits reflecting the current status of the CPU as
detailed in Table 4.
SFR Address
D0H
Power-On Default
00H
Bit Addressable
Yes
CY
AC
F0
RS1
RS0
OV
F1
P
Table 4. PSW SFR Bit Designations
Bit No.
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
RS0
Selected Bank
0
1
0
2
1
3
2
OV
Overflow Flag.
1
F1
General-Purpose Flag.
0
P
Parity Bit.
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