參數(shù)資料
型號(hào)： MB90522BPFF
廠商： FUJITSU LTD
元件分類： 微控制器/微處理器
英文描述： 16-bit Proprietary Microcontroller
中文描述： 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP120
封裝： PLASTIC, LQFP-120
文件頁數(shù)： 69/99頁
文件大?。?/td> 978K
代理商： MB90522BPFF
MB90520A/520B Series
69
17. Communications Prescaler
Supplies the clock to the dedicated baud rate generator used by the UART (SCI) and extended I/O serial
interfaces.
By dividing the machine clock to produce the clock supply to the dedicated baud rate generator, the baud rate
can be specified independently of the machine clock speed.
The communications prescaler can divide the machine clock frequency
φ
by the following seven ratios to
generate the clock supply to the dedicated baud rate generator and extended I/O serial interface :
φ
/2,
φ
/3,
φ
/4,
φ
/5,
φ
/6,
φ
/7,
φ
/8
Communications prescaler functions
Note : As the same output from the communications prescaler is supplied to both the UART (SCI) and the extended
I/O serial interface, the transfer clock speed settings must be revised if the communications prescaler settings
are changed.
Block diagram
Function
Clock supply
Dedicated baud rate generator for the UART (SCI) and the extended I/O serial
interface. However, the same clock is supplied to both peripherals.
φ
/2,
φ
/3,
φ
/4,
φ
/5,
φ
/6,
φ
/7,
φ
/8 (
φ
: Machine clock frequency)
None
Not supported by the extended intelligent I/O service (EI
2
OS) .
Divided clock frequency
Interrupts
EI
2
OS support
MD
DIV3 DIV2 DIV1
DIV0
φ
/2
φ
/3
φ
/4
φ
/5
φ
/6
φ
/7
φ
/8
φ
SMCS:SMD2
～
SMD0
=
000
B
～
100
B
SMR:CS2
～
CS0
=
000
B
～
100
B
UART
CDCR
Extended serial I/O
Communications prescaler
φ
: Undefined
: Machine clock frequency
相關(guān)PDF資料
PDF描述
MB90522BPFV 16-bit Proprietary Microcontroller
MB90523A 16-bit Proprietary Microcontroller
MB90523APFF 16-bit Proprietary Microcontroller
MB90523APFV 16-bit Proprietary Microcontroller
MB90523B 16-bit Proprietary Microcontroller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MB90522BPFV 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller
MB90522BPMC1 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Microcontroller
MB90522PFF 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller
MB90522PFV 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller
MB90523 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller
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