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| 型號(hào)： | ADUC832BS |
| 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 62 kBytes Flash MCU |
| 中文描述： | 8-BIT, FLASH, 16.78 MHz, MICROCONTROLLER, PQFP52 |
| 封裝： | PLASTIC, MQFP-52 |
| 文件頁(yè)數(shù)： | 50/80頁(yè) |
| 文件大?。?/td> | 1311K |
| 代理商： | ADUC832BS |
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REV. 0
–50–
ADuC832
MCO
I2CM
SFR
BITS
50ns GLITCH
REJECTION FILTER
HARDWARE I
2
C
(SLAVE ONLY)
Q3
Q4
SCLOCK
PIN
Q2
Q1
(OFF)
DV
DD
SPE = 0 (I
2
C ENABLE)
Figure 42. SCLOCK Pin I/O Functional Equivalent
in I
2
C Mode
HARDWARE SPI
(MASTER/SLAVE)
Q3
Q1
Q2 (OFF)
DV
DD
SDATA/
MOSI
PIN
Q4 (OFF)
SPE = 1 (SPI ENABLE)
Figure 43. SDATA/MOSI Pin I/O Functional Equivalent
in SPI Mode
Q3
Q4
Q2
Q1
(OFF)
DV
DD
MDI
MDO
MDE
I2CM
HARDWARE I
2
C
(SLAVE ONLY)
50ns GLITCH
REJECTION FILTER
SDATA/
MOSI
PIN
SFR
BITS
SPE = 0 (I
2
C ENABLE)
Figure 44. SDATA/MOSI Pin I/O Functional Equivalent
in I
2
C Mode
MISO is shared with P3.3 and as such has the same configuration
as that shown in Figure 40.
Read-Modify-Write Instructions
Some 8051 instructions that read a port read the latch while
others read the pin. The instructions that read the latch rather
than the pins are the ones that read a value, possibly change it,
and then rewrite it to the latch. These are called
“
read-modify-
write
”
instructions. Listed below are the read-modify-write
instructions. When the destination operand is a port, or a port
bit, these instructions read the latch rather than the pin.
ANL
(Logical AND, e.g., ANL P1, A)
ORL
(Logical OR, e.g., ORL P2, A)
XRL
(Logical EX-OR, e.g., XRL P3, A)
JBC
(Jump if bit = 1 and clear bit, e.g., JBC P1.1,
LABEL)
CPL
(Complement bit, e.g., CPL P3.0)
INC
(increment, e.g., INC P2)
DEC
(Decrement, e.g., DEC P2)
DJNZ
(Decrement and jump if not zero, e.g., DJNZ
P3, LABEL)
MOV PX.Y, C
*
(Move carry to Bit Y of Port X)
CLR PX.Y
*
(Clear Bit Y of Port X)
SETB PX.Y
*
(Set Bit Y of Port X)
The reason that read-modify-write instructions are directed to
the latch rather than the pin is to avoid a possible misinterpreta-
tion of the voltage level of a pin. For example, a port pin might
be used to drive the base of a transistor. When a 1 is written to
the bit, the transistor is turned on. If the CPU then reads the
same port bit at the pin rather than the latch, it will read the
base voltage of the transistor and interpret it as a logic 0. Reading
the latch rather than the pin will return the correct value of 1.
*
These instructions read the port byte (all 8 bits), modify the addressed bit and
then write the new byte back to the latch.
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| ADUC832BS-REEL | 制造商:Analog Devices 功能描述:MCU 8-Bit ADuC8xx 8052 CISC 62KB Flash 3.3V/5V 52-Pin MQFP T/R |
| ADUC832BSZ | 功能描述:IC ADC/DAC 12BIT W/MCU 52MQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC8xx 標(biāo)準(zhǔn)包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN，SCI，SPI 外圍設(shè)備:POR，PWM，溫度傳感器，WDT 輸入/輸出數(shù):21 程序存儲(chǔ)器容量:40KB（20K x 16） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 6x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤(pán) 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323 |
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