參數(shù)資料
型號: MB90T673
廠商: Fujitsu Limited
英文描述: Quadruple Bus Buffer Gates With 3- State Outputs 14-CDIP -55 to 125
中文描述: 16位微控制器專有
文件頁數(shù): 22/124頁
文件大?。?/td> 2584K
代理商: MB90T673
MB90670/675 Series
22
6. Turning-on Sequence of Power Supply to A/D Converter and Analog Inputs
Make sure to turn on the A/D converter power supply (AV
CC
, AVRH, AVRL) and analog inputs (AN0 to AN7)
after turning-on the digital power supply (V
CC
).
Turn-off the digital power after turning off the A/D converter supply and analog inputs. In this case, make sure
that the voltage not exceed AVRH or AV
CC
(turning on/off the analog and digital power supplies simultaneously
is acceptable).
7. Connection of Unused Pins of A/D Converter
Connect unused pins of A/D converter to AV
CC
= V
CC
, AV
SS
= AVRH = V
SS
.
8. “MOV @AL, AH”, “MOVW @AL, AH” Instructions
When the above instruction is performed to I/O space, an unnecessary writing operation (#FF, #FFFF) may be
performed in the internal bus.
Use the compiler function for inserting an NOP instruction before the above instructions to avoid the writing
operation.
Accessing RAM space with the above instruction does not cause any problem.
9. Initialization
In the device, there are internal registers which is initialized only by a power-on reset. To initialize these registers,
turning on the power again.
相關(guān)PDF資料
PDF描述
MB90T673PF 16-Bit Buffers/Drivers With 3-State Outputs 48-CFP -55 to 125
MB90678 16-bit Proprietary Microcontroller
MB90T673PFV 16-Bit Bus Transceivers With 3-State Outputs 48-CFP -55 to 125
MB90T678PF 16-BIT BUFFERS/DRIVERS WITH 3-STATE OUTPUTS 48-CFP -55 to 125
MB90T678PFV 16-bit Proprietary Microcontroller
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