參數(shù)資料
型號： MC9S12H128
廠商： Motorola, Inc.
英文描述： Device User Guide
中文描述： 設(shè)備用戶指南
文件頁數(shù)： 81/124頁
文件大?。?/td> 2125K
代理商： MC9S12H128
81
Section 22 Printed Circuit Board Layout Proposal
Table 22-1 Suggested External Component Values
Component
Purpose
The PCB must be carefully laid out to ensure proper operation of the voltage regulator as well as of the
MCU itself. The following rules must be observed:
Every supply pair must be decoupled by a ceramic capacitor connected as near as possible to the
corresponding pins (C1 –C6).
Central point of the ground star should be the VSSR pin.
Use low ohmic low inductance connections between VSS1, VSS2 and VSSR.
VSSPLL must be directly connected to VSSR.
Keep traces of VSSPLL, EXTAL and XTAL as short as possible and occupied board area for C7,
C8, C11 and Q1 as small as possible.
Do not place other signals or supplies underneath area occupied by C7, C8, C10 and Q1 and the
connection area to the MCU.
Central power input should be fed in at the VDDA/VSSA pins.
Type
Value
C1
VDD1 filter cap
ceramic X7R
100 … 220nF
C2
VDD2 filter cap
ceramic X7R
100 … 220nF
C3
VDDA filter cap
ceramic X7R
100nF
C4
VDDR filter cap
X7R/tantalum
>= 100nF
C5
VDDPLL filter cap
ceramic X7R
100nF
C6
VDDX filter cap
X7R/tantalum
>= 100nF
C7
OSC load cap
C8
OSC load cap
C9 / C
S
PLL loop filter cap
See PLL specification chapter
C10 / C
P
PLL loop filter cap
C11 / C
DC
DC cutoff cap
Colpitts mode only, if recommended by
quartz manufacturer
R1 / R
PLL loop filter res
See PLL Specification chapter
R2 / R
B
Pierce mode only
R3 / R
S
Q1
Quartz
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC9S12H128VFVE 功能描述:16位微控制器 - MCU 16B FLASH CANS 2XAT RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT
MC9S12H128VPV 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC9S12H128VPVE 功能描述:16位微控制器 - MCU 16B FLASH CANS 2XAT RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT
MC9S12H256VFV 功能描述:16位微控制器 - MCU 16 Bit 16MHz RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT
MC9S12H256VFVE 功能描述:16位微控制器 - MCU 16B FLASH CANS 2XAT RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT
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