ADUC814BRU 查看數據表（PDF） - Analog Devices
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ADUC814BRU Datasheet PDF : 72 Pages
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Serial Peripheral Interface..........................................................44
MISO (Master In, Slave Out Data I/O Pin) .........................44
MOSI (Master Out, Slave In Pin)..........................................44
SCLOCK (Serial Clock I/O Pin) ...........................................44
SS (Slave Select Input Pin) .....................................................44
Using the SPI Interface...........................................................45
SPI Interface—Master Mode .................................................45
SPI Interface—Slave Mode ....................................................45
I2C Compatible Interface............................................................46
8051 Compatible On-Chip Peripherals....................................47
Parallel I/O Ports 1 and 3.......................................................47
Additional Digital Outputs Pins ...........................................47
Timers/Counters .........................................................................48
Timer/Counter 0 and 1 Data Registers ................................49
Timer/Counter 0 and 1 Operating Modes...............................50
Mode 0 (13-Bit Timer/Counter) ...........................................50
Mode 1 (16-Bit Timer/Counter) ...........................................50
Mode 2 (8-Bit Timer/Counter with Autoreload)................50
Mode 3 (Two 8-Bit Timer/Counters)...................................50
Timer/Counter 2 Data Registers...........................................51
Timer/Counter 2 Operating Modes .........................................52
16-Bit Autoreload Mode.........................................................52
16-Bit Capture Mode ..............................................................52
UART Serial Interface.................................................................53
REVISION HISTORY
12/03 – Data Sheet Changed from REV. 0 to REV. A
Added detailed description of product ........................... Universal
Changes to Specifications.................................................................4
Updated Outline Dimensions........................................................70
Changes to Ordering Guide...........................................................71
ADuC814
SBUF ......................................................................................... 53
Mode 0: 8-Bit Shift Register Mode .......................................54
Mode 1: 8-Bit UART, Variable Baud Rate ............................54
Mode 2: 9-Bit UART with Fixed Baud Rate ........................55
Mode 3: 9-Bit UART with Variable Baud Rate....................55
UART Serial Port Baud Rate Generation ............................55
Timer 2 Generated Baud Rates .............................................56
Interrupt System..........................................................................57
Interrupt Priority ....................................................................59
Interrupt Vectors.....................................................................59
ADuC814 Hardware Design Considerations ..............................60
Clock Oscillator...........................................................................60
Power Supplies.............................................................................60
Power Consumption...................................................................60
Power-Saving Modes ..............................................................61
Power-On Reset ......................................................................61
Grounding and Board Layout Recommendations .............61
Other Hardware Considerations...............................................62
In-Circuit Serial Download Access ......................................62
Embedded Serial Port Debugger ..........................................62
Single-Pin Emulation Mode ..................................................63
Timing Specifications .....................................................................64
Outline Dimensions........................................................................70
Ordering Guide ...........................................................................71
Rev. A | Page 3 of 72
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